Generalize ReagentUnit into FixedPoint2 and use it for damage calculations (#5151)

* Damage units

* sum ext method

Content.Client/Administration/UI/AdminAddReagentUI.cs

@@ -2,6 +2,7 @@ using Content.Client.Eui;
 using Content.Shared.Administration;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Eui;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
@@ -40,7 +41,7 @@ namespace Content.Client.Administration.UI
             _window.HandleState((AdminAddReagentEuiState) state);
         }
 
-        private void DoAdd(bool close, string reagentId, ReagentUnit amount)
+        private void DoAdd(bool close, string reagentId, FixedPoint2 amount)
         {
             SendMessage(new AdminAddReagentEuiMsg.DoAdd
             {
@@ -121,7 +122,7 @@ namespace Content.Client.Administration.UI
                 _eui.DoAdd(
                     close,
                     _reagentIdEdit.Text,
-                    ReagentUnit.New(float.Parse(_amountEdit.Text)));
+                    FixedPoint2.New(float.Parse(_amountEdit.Text)));
             }
 
             private void CheckErrors()

Content.Client/Chemistry/Components/HyposprayComponent.cs

@@ -3,6 +3,7 @@ using Content.Client.Message;
 using Content.Client.Stylesheets;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Shared.GameObjects;
@@ -15,8 +16,8 @@ namespace Content.Client.Chemistry.Components
     [RegisterComponent]
     public sealed class HyposprayComponent : SharedHyposprayComponent, IItemStatus
     {
-        [ViewVariables] private ReagentUnit CurrentVolume { get; set; }
-        [ViewVariables] private ReagentUnit TotalVolume { get; set; }
+        [ViewVariables] private FixedPoint2 CurrentVolume { get; set; }
+        [ViewVariables] private FixedPoint2 TotalVolume { get; set; }
         [ViewVariables(VVAccess.ReadWrite)] private bool _uiUpdateNeeded;
 
         public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)

Content.Client/Chemistry/Components/InjectorComponent.cs

@@ -3,6 +3,7 @@ using Content.Client.Message;
 using Content.Client.Stylesheets;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Shared.GameObjects;
@@ -18,8 +19,8 @@ namespace Content.Client.Chemistry.Components
     [RegisterComponent]
     public class InjectorComponent : SharedInjectorComponent, IItemStatus
     {
-        [ViewVariables] private ReagentUnit CurrentVolume { get; set; }
-        [ViewVariables] private ReagentUnit TotalVolume { get; set; }
+        [ViewVariables] private FixedPoint2 CurrentVolume { get; set; }
+        [ViewVariables] private FixedPoint2 TotalVolume { get; set; }
         [ViewVariables] private InjectorToggleMode CurrentMode { get; set; }
         [ViewVariables(VVAccess.ReadWrite)] private bool _uiUpdateNeeded;
 

Content.Client/Chemistry/UI/ChemMasterWindow.xaml.cs

@@ -4,6 +4,7 @@ using Content.Client.Stylesheets;
 using Content.Client.UserInterface;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
@@ -47,7 +48,7 @@ namespace Content.Client.Chemistry.UI
             BottleAmount.InitDefaultButtons();
         }
 
-        private ChemButton MakeChemButton(string text, ReagentUnit amount, string id, bool isBuffer, string styleClass)
+        private ChemButton MakeChemButton(string text, FixedPoint2 amount, string id, bool isBuffer, string styleClass)
         {
             var button = new ChemButton(text, amount, id, isBuffer, styleClass);
             button.OnPressed += args
@@ -129,11 +130,11 @@ namespace Content.Client.Chemistry.UI
                             //Padding
                             new Control {HorizontalExpand = true},
 
-                            MakeChemButton("1", ReagentUnit.New(1), reagent.ReagentId, false, StyleBase.ButtonOpenRight),
-                            MakeChemButton("5", ReagentUnit.New(5), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
-                            MakeChemButton("10", ReagentUnit.New(10), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
-                            MakeChemButton("25", ReagentUnit.New(25), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
-                            MakeChemButton(Loc.GetString("chem-master-window-buffer-all-amount"), ReagentUnit.New(-1), reagent.ReagentId, false, StyleBase.ButtonOpenLeft),
+                            MakeChemButton("1", FixedPoint2.New(1), reagent.ReagentId, false, StyleBase.ButtonOpenRight),
+                            MakeChemButton("5", FixedPoint2.New(5), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
+                            MakeChemButton("10", FixedPoint2.New(10), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
+                            MakeChemButton("25", FixedPoint2.New(25), reagent.ReagentId, false, StyleBase.ButtonOpenBoth),
+                            MakeChemButton(Loc.GetString("chem-master-window-buffer-all-amount"), FixedPoint2.New(-1), reagent.ReagentId, false, StyleBase.ButtonOpenLeft),
                         }
                     });
                 }
@@ -189,11 +190,11 @@ namespace Content.Client.Chemistry.UI
                             //Padding
                             new Control {HorizontalExpand = true},
 
-                            MakeChemButton("1", ReagentUnit.New(1), reagent.ReagentId, true, StyleBase.ButtonOpenRight),
-                            MakeChemButton("5", ReagentUnit.New(5), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
-                            MakeChemButton("10", ReagentUnit.New(10), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
-                            MakeChemButton("25", ReagentUnit.New(25), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
-                            MakeChemButton(Loc.GetString("chem-master-window-buffer-all-amount"), ReagentUnit.New(-1), reagent.ReagentId, true, StyleBase.ButtonOpenLeft),
+                            MakeChemButton("1", FixedPoint2.New(1), reagent.ReagentId, true, StyleBase.ButtonOpenRight),
+                            MakeChemButton("5", FixedPoint2.New(5), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
+                            MakeChemButton("10", FixedPoint2.New(10), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
+                            MakeChemButton("25", FixedPoint2.New(25), reagent.ReagentId, true, StyleBase.ButtonOpenBoth),
+                            MakeChemButton(Loc.GetString("chem-master-window-buffer-all-amount"), FixedPoint2.New(-1), reagent.ReagentId, true, StyleBase.ButtonOpenLeft),
                         }
                     });
                 }
@@ -203,10 +204,10 @@ namespace Content.Client.Chemistry.UI
 
     public class ChemButton : Button
     {
-        public ReagentUnit Amount { get; set; }
+        public FixedPoint2 Amount { get; set; }
         public bool isBuffer = true;
         public string Id { get; set; }
-        public ChemButton(string _text, ReagentUnit _amount, string _id, bool _isBuffer, string _styleClass)
+        public ChemButton(string _text, FixedPoint2 _amount, string _id, bool _isBuffer, string _styleClass)
         {
             AddStyleClass(_styleClass);
             Text = _text;

Content.Client/Chemistry/UI/TransferAmountBoundUserInterface.cs

@@ -1,5 +1,6 @@
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Client.GameObjects;
 using Robust.Shared.GameObjects;
@@ -20,7 +21,7 @@ namespace Content.Client.Chemistry.UI
             {
                 if (int.TryParse(_window.AmountLineEdit.Text, out var i))
                 {
-                    SendMessage(new TransferAmountSetValueMessage(ReagentUnit.New(i)));
+                    SendMessage(new TransferAmountSetValueMessage(FixedPoint2.New(i)));
                     _window.Close();
                 }
             };

Content.Client/Damage/DamageVisualizer.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using Robust.Client.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -58,7 +59,7 @@ namespace Content.Client.Damage
         ///     isn't required for it.
         /// </remarks>
         [DataField("thresholds", required: true)]
-        private List<int> _thresholds = new();
+        private List<FixedPoint2> _thresholds = new();
 
         /// <summary>
         ///     Layers to target, by layerMapKey.
@@ -295,7 +296,7 @@ namespace Content.Client.Damage
                 || !entity.TryGetComponent<AppearanceComponent>(out var appearanceComponent))
                 return;
 
-            _thresholds.Add(0);
+            _thresholds.Add(FixedPoint2.Zero);
             _thresholds.Sort();
 
             if (_thresholds[0] != 0)
@@ -324,7 +325,7 @@ namespace Content.Client.Damage
                             return;
                         }
 
-                        damageData.LastThresholdPerGroup.Add(damageType, 0);
+                        damageData.LastThresholdPerGroup.Add(damageType, FixedPoint2.Zero);
                     }
                 }
                 // Are we tracking a single damage group without overlay instead?
@@ -338,7 +339,7 @@ namespace Content.Client.Damage
                         return;
                     }
 
-                    damageData.LastThresholdPerGroup.Add(_damageGroup, 0);
+                    damageData.LastThresholdPerGroup.Add(_damageGroup, FixedPoint2.Zero);
                 }
             }
             // Ditto above, but instead we go through every group.
@@ -356,7 +357,7 @@ namespace Content.Client.Damage
                             damageData.Valid = false;
                             return;
                         }
-                        damageData.LastThresholdPerGroup.Add(damageType, 0);
+                        damageData.LastThresholdPerGroup.Add(damageType, FixedPoint2.Zero);
                     }
                 else if (_damageGroup != null)
                 {
@@ -367,7 +368,7 @@ namespace Content.Client.Damage
                         return;
                     }
 
-                    damageData.LastThresholdPerGroup.Add(_damageGroup, 0);
+                    damageData.LastThresholdPerGroup.Add(_damageGroup, FixedPoint2.Zero);
                 }
             }
 
@@ -604,7 +605,7 @@ namespace Content.Client.Damage
                 {
                     foreach (var (damageGroup, sprite) in _damageOverlayGroups)
                     {
-                        int threshold = damageData.LastThresholdPerGroup[damageGroup];
+                        FixedPoint2 threshold = damageData.LastThresholdPerGroup[damageGroup];
                         ReorderOverlaySprite(spriteComponent,
                             damageData,
                             sprite,
@@ -625,12 +626,12 @@ namespace Content.Client.Damage
             }
         }
 
-        private void ReorderOverlaySprite(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, DamageVisualizerSprite sprite, string key, string statePrefix, int threshold)
+        private void ReorderOverlaySprite(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, DamageVisualizerSprite sprite, string key, string statePrefix, FixedPoint2 threshold)
         {
             spriteComponent.LayerMapTryGet(key, out int spriteLayer);
             bool visibility = spriteComponent[spriteLayer].Visible;
             spriteComponent.RemoveLayer(spriteLayer);
-            if (threshold == 0) // these should automatically be invisible
+            if (threshold == FixedPoint2.Zero) // these should automatically be invisible
                 threshold = _thresholds[1];
             spriteLayer = spriteComponent.AddLayer(
                 new SpriteSpecifier.Rsi(
@@ -650,7 +651,7 @@ namespace Content.Client.Damage
         /// </summary>
         private void UpdateDamageVisuals(DamageableComponent damageComponent, SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData)
         {
-            if (!CheckThresholdBoundary(damageComponent.TotalDamage, damageData.LastDamageThreshold, out int threshold))
+            if (!CheckThresholdBoundary(damageComponent.TotalDamage, damageData.LastDamageThreshold, out FixedPoint2 threshold))
                 return;
 
             damageData.LastDamageThreshold = threshold;
@@ -679,11 +680,11 @@ namespace Content.Client.Damage
                     continue;
 
                 if (!_prototypeManager.TryIndex<DamageGroupPrototype>(damageGroup, out var damageGroupPrototype)
-                    || !damageComponent.Damage.TryGetDamageInGroup(damageGroupPrototype, out int damageTotal))
+                    || !damageComponent.Damage.TryGetDamageInGroup(damageGroupPrototype, out FixedPoint2 damageTotal))
                     continue;
 
-                if (!damageData.LastThresholdPerGroup.TryGetValue(damageGroup, out int lastThreshold)
-                    || !CheckThresholdBoundary(damageTotal, lastThreshold, out int threshold))
+                if (!damageData.LastThresholdPerGroup.TryGetValue(damageGroup, out FixedPoint2 lastThreshold)
+                    || !CheckThresholdBoundary(damageTotal, lastThreshold, out FixedPoint2 threshold))
                     continue;
 
                 damageData.LastThresholdPerGroup[damageGroup] = threshold;
@@ -704,10 +705,10 @@ namespace Content.Client.Damage
         /// <summary>
         ///     Checks if a threshold boundary was passed.
         /// </summary>
-        private bool CheckThresholdBoundary(int damageTotal, int lastThreshold, out int threshold)
+        private bool CheckThresholdBoundary(FixedPoint2 damageTotal, FixedPoint2 lastThreshold, out FixedPoint2 threshold)
         {
-            threshold = 0;
-            damageTotal = (int) Math.Floor(damageTotal / _divisor);
+            threshold = FixedPoint2.Zero;
+            damageTotal = damageTotal / _divisor;
             int thresholdIndex = _thresholds.BinarySearch(damageTotal);
 
             if (thresholdIndex < 0)
@@ -753,7 +754,7 @@ namespace Content.Client.Damage
         ///     it assumes you're updating a layer that is tracking all
         ///     damage.
         /// </summary>
-        private void UpdateTargetLayer(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, object layerMapKey, int threshold)
+        private void UpdateTargetLayer(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, object layerMapKey, FixedPoint2 threshold)
         {
             if (_overlay && _damageOverlayGroups != null)
             {
@@ -783,7 +784,7 @@ namespace Content.Client.Damage
         /// <summary>
         ///     Updates a target layer by damage group.
         /// </summary>
-        private void UpdateTargetLayer(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, object layerMapKey, string damageGroup, int threshold)
+        private void UpdateTargetLayer(SpriteComponent spriteComponent, DamageVisualizerDataComponent damageData, object layerMapKey, string damageGroup, FixedPoint2 threshold)
         {
             if (_overlay && _damageOverlayGroups != null)
             {
@@ -813,7 +814,7 @@ namespace Content.Client.Damage
         /// <summary>
         ///     Updates an overlay that is tracking all damage.
         /// </summary>
-        private void UpdateOverlay(SpriteComponent spriteComponent, int threshold)
+        private void UpdateOverlay(SpriteComponent spriteComponent, FixedPoint2 threshold)
         {
             spriteComponent.LayerMapTryGet($"DamageOverlay", out int spriteLayer);
 
@@ -826,7 +827,7 @@ namespace Content.Client.Damage
         /// <summary>
         ///     Updates an overlay based on damage group.
         /// </summary>
-        private void UpdateOverlay(SpriteComponent spriteComponent, string damageGroup, int threshold)
+        private void UpdateOverlay(SpriteComponent spriteComponent, string damageGroup, FixedPoint2 threshold)
         {
             if (_damageOverlayGroups != null)
             {
@@ -848,7 +849,7 @@ namespace Content.Client.Damage
         ///     function calls it), and what threshold
         ///     was passed into it.
         /// </summary>
-        private void UpdateDamageLayerState(SpriteComponent spriteComponent, int spriteLayer, string statePrefix, int threshold)
+        private void UpdateDamageLayerState(SpriteComponent spriteComponent, int spriteLayer, string statePrefix, FixedPoint2 threshold)
         {
             if (threshold == 0)
             {

Content.Client/Damage/DamageVisualizerComponent.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 
 namespace Content.Client.Damage
@@ -17,10 +18,10 @@ namespace Content.Client.Damage
         public List<object> TargetLayerMapKeys = new();
         public bool Disabled = false;
         public bool Valid = true;
-        public int LastDamageThreshold = 0;
+        public FixedPoint2 LastDamageThreshold = FixedPoint2.Zero;
         public Dictionary<object, bool> DisabledLayers = new();
         public Dictionary<object, string> LayerMapKeyStates = new();
-        public Dictionary<string, int> LastThresholdPerGroup = new();
+        public Dictionary<string, FixedPoint2> LastThresholdPerGroup = new();
         public string TopMostLayerKey = default!;
     }
 }

Content.Client/HealthOverlay/UI/HealthOverlayGui.cs

@@ -1,6 +1,7 @@
 using Content.Client.IoC;
 using Content.Client.Resources;
 using Content.Shared.Damage;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState;
 using Robust.Client.Graphics;
 using Robust.Client.UserInterface;
@@ -84,7 +85,7 @@ namespace Content.Client.HealthOverlay.UI
                 return;
             }
 
-            int threshold;
+            FixedPoint2 threshold;
 
             if (mobState.IsAlive())
             {
@@ -97,7 +98,7 @@ namespace Content.Client.HealthOverlay.UI
 
                 CritBar.Ratio = 1;
                 CritBar.Visible = true;
-                HealthBar.Ratio = 1 - (float) damageable.TotalDamage / threshold;
+                HealthBar.Ratio = 1 - (damageable.TotalDamage / threshold).Float();
                 HealthBar.Visible = true;
             }
             else if (mobState.IsCritical())
@@ -113,9 +114,9 @@ namespace Content.Client.HealthOverlay.UI
                 }
 
                 CritBar.Visible = true;
-                CritBar.Ratio = 1 - (float)
-                    (damageable.TotalDamage - critThreshold) /
-                    (deadThreshold - critThreshold);
+                CritBar.Ratio = 1 -
+                    ((damageable.TotalDamage - critThreshold) /
+                    (deadThreshold - critThreshold)).Float();
             }
             else if (mobState.IsDead())
             {

Content.Client/MedicalScanner/UI/MedicalScannerWindow.xaml.cs

@@ -9,6 +9,7 @@ using Robust.Shared.Localization;
 using Robust.Shared.Prototypes;
 using static Content.Shared.MedicalScanner.SharedMedicalScannerComponent;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using Robust.Client.AutoGenerated;
 using Robust.Client.UserInterface.XAML;
 
@@ -39,6 +40,7 @@ namespace Content.Client.MedicalScanner.UI
                 text.Append($"{Loc.GetString("medical-scanner-window-entity-health-text", ("entityName", entity.Name))}\n");
 
                 var totalDamage = state.DamagePerType.Values.Sum();
+
                 text.Append($"{Loc.GetString("medical-scanner-window-entity-damage-total-text", ("amount", totalDamage))}\n");
 
                 HashSet<string> shownTypes = new();

Content.IntegrationTests/Tests/Chemistry/FixedPoint2SerializationTest.cs

@@ -1,5 +1,6 @@
 using System.Reflection;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 using Robust.Shared.Serialization.Manager;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -9,18 +10,18 @@ using Robust.UnitTesting.Shared.Serialization;
 
 namespace Content.IntegrationTests.Tests.Chemistry
 {
-    public class ReagentUnitSerializationTest : SerializationTest
+    public class FixedPoint2SerializationTest : SerializationTest
     {
         protected override Assembly[] Assemblies => new[]
         {
-            typeof(ReagentUnitSerializationTest).Assembly
+            typeof(FixedPoint2SerializationTest).Assembly
         };
 
         [Test]
         public void DeserializeNullTest()
         {
             var node = new ValueDataNode("null");
-            var unit = Serialization.ReadValue<ReagentUnit?>(node);
+            var unit = Serialization.ReadValue<FixedPoint2?>(node);
 
             Assert.That(unit, Is.Null);
         }
@@ -29,15 +30,15 @@ namespace Content.IntegrationTests.Tests.Chemistry
         public void DeserializeNullDefinitionTest()
         {
             var node = new MappingDataNode().Add("unit", "null");
-            var definition = Serialization.ReadValueOrThrow<ReagentUnitTestDefinition>(node);
+            var definition = Serialization.ReadValueOrThrow<FixedPoint2TestDefinition>(node);
 
             Assert.That(definition.Unit, Is.Null);
         }
     }
 
     [DataDefinition]
-    public class ReagentUnitTestDefinition
+    public class FixedPoint2TestDefinition
     {
-        [DataField("unit")] public ReagentUnit? Unit { get; set; } = ReagentUnit.New(5);
+        [DataField("unit")] public FixedPoint2? Unit { get; set; } = FixedPoint2.New(5);
     }
 }

Content.IntegrationTests/Tests/Commands/RejuvenateTest.cs

@@ -2,6 +2,7 @@ using System.Threading.Tasks;
 using Content.Server.Administration.Commands;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
@@ -56,7 +57,8 @@ namespace Content.IntegrationTests.Tests.Commands
                 Assert.That(mobState.IsIncapacitated, Is.False);
 
                 // Kill the entity
-                DamageSpecifier damage = new(prototypeManager.Index<DamageGroupPrototype>("Toxin"), 10000000);
+                DamageSpecifier damage = new(prototypeManager.Index<DamageGroupPrototype>("Toxin"),
+                    FixedPoint2.New(10000000));
                 EntitySystem.Get<DamageableSystem>().TryChangeDamage(human.Uid, damage, true);
 
                 // Check that it is dead
@@ -74,7 +76,7 @@ namespace Content.IntegrationTests.Tests.Commands
                 Assert.That(mobState.IsDead, Is.False);
                 Assert.That(mobState.IsIncapacitated, Is.False);
 
-                Assert.That(damageable.TotalDamage, Is.Zero);
+                Assert.That(damageable.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
             });
         }
     }

Content.IntegrationTests/Tests/Damageable/DamageableTest.cs

@@ -2,6 +2,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
@@ -108,7 +109,7 @@ namespace Content.IntegrationTests.Tests.Damageable
             DamageTypePrototype type3b = default!;
             DamageTypePrototype type3c = default!;
 
-            int typeDamage, groupDamage;
+            FixedPoint2 typeDamage, groupDamage;
 
             await server.WaitPost(() =>
             {
@@ -148,7 +149,7 @@ namespace Content.IntegrationTests.Tests.Damageable
 
                 // Check that damage is evenly distributed over a group if its a nice multiple
                 var types = group3.DamageTypes;
-                var damageToDeal = types.Count() * 5;
+                var damageToDeal = FixedPoint2.New(types.Count() * 5);
                 DamageSpecifier damage = new(group3, damageToDeal);
 
                 sDamageableSystem.TryChangeDamage(uid, damage, true);
@@ -166,73 +167,74 @@ namespace Content.IntegrationTests.Tests.Damageable
                 sDamageableSystem.TryChangeDamage(uid, -damage);
                 Assert.That(DamageChanged);
                 DamageChanged = false;
-                Assert.That(sDamageableComponent.TotalDamage, Is.Zero);
-                Assert.That(sDamageableComponent.DamagePerGroup[group3.ID], Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
+                Assert.That(sDamageableComponent.DamagePerGroup[group3.ID], Is.EqualTo(FixedPoint2.Zero));
                 foreach (var type in types)
                 {
                     Assert.That(sDamageableComponent.Damage.DamageDict.TryGetValue(type, out typeDamage));
-                    Assert.That(typeDamage, Is.Zero);
+                    Assert.That(typeDamage, Is.EqualTo(FixedPoint2.Zero));
                 }
 
                 // Check that damage works properly if it is NOT perfectly divisible among group members
                 types = group3.DamageTypes;
-                damageToDeal = types.Count() * 5 - 1;
+                damageToDeal = FixedPoint2.New(types.Count() * 5 - 1);
                 damage = new DamageSpecifier(group3, damageToDeal);
                 sDamageableSystem.TryChangeDamage(uid, damage, true);
                 Assert.That(DamageChanged);
                 DamageChanged = false;
                 Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(damageToDeal));
                 Assert.That(sDamageableComponent.DamagePerGroup[group3.ID], Is.EqualTo(damageToDeal));
-                // integer rounding. In this case, first member gets 1 less than others.
                 Assert.That(sDamageableComponent.Damage.DamageDict[type3a.ID], Is.EqualTo(damageToDeal / types.Count()));
-                Assert.That(sDamageableComponent.Damage.DamageDict[type3b.ID], Is.EqualTo(1 + damageToDeal / types.Count()));
-                Assert.That(sDamageableComponent.Damage.DamageDict[type3c.ID], Is.EqualTo(1 + damageToDeal / types.Count()));
+                Assert.That(sDamageableComponent.Damage.DamageDict[type3b.ID], Is.EqualTo(damageToDeal / types.Count()));
+
+                // last one will get 0.01 less, since its not perfectly divisble by 3
+                Assert.That(sDamageableComponent.Damage.DamageDict[type3c.ID], Is.EqualTo(damageToDeal / types.Count() - 0.01));
 
                 // Heal
                 sDamageableSystem.TryChangeDamage(uid, -damage);
                 Assert.That(DamageChanged);
                 DamageChanged = false;
-                Assert.That(sDamageableComponent.TotalDamage, Is.Zero);
-                Assert.That(sDamageableComponent.DamagePerGroup[group3.ID], Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
+                Assert.That(sDamageableComponent.DamagePerGroup[group3.ID], Is.EqualTo(FixedPoint2.Zero));
                 foreach (var type in types)
                 {
                     Assert.That(sDamageableComponent.Damage.DamageDict.TryGetValue(type, out typeDamage));
-                    Assert.That(typeDamage, Is.Zero);
+                    Assert.That(typeDamage, Is.EqualTo(FixedPoint2.Zero));
                 }
 
                 // Test that unsupported groups return false when setting/getting damage (and don't change damage)
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
-                damage = new DamageSpecifier(group1, 10) + new DamageSpecifier(type2b, 10);
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
+                damage = new DamageSpecifier(group1, FixedPoint2.New(10)) + new DamageSpecifier(type2b, FixedPoint2.New(10));
                 sDamageableSystem.TryChangeDamage(uid, damage, true);
                 Assert.That(DamageChanged, Is.False);
                 Assert.That(sDamageableComponent.DamagePerGroup.TryGetValue(group1.ID, out groupDamage), Is.False);
                 Assert.That(sDamageableComponent.Damage.DamageDict.TryGetValue(type1.ID, out typeDamage), Is.False);
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
 
                 // Test SetAll function
                 sDamageableSystem.SetAllDamage(sDamageableComponent, 10);
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(10 * sDamageableComponent.Damage.DamageDict.Count()));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.New(10 * sDamageableComponent.Damage.DamageDict.Count())));
                 sDamageableSystem.SetAllDamage(sDamageableComponent, 0);
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
 
                 // Test 'wasted' healing
                 sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(type3a, 5));
                 sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(type3b, 7));
                 sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(group3, -11));
-                Assert.That(sDamageableComponent.Damage.DamageDict[type3a.ID], Is.EqualTo(2));
-                Assert.That(sDamageableComponent.Damage.DamageDict[type3b.ID], Is.EqualTo(3));
-                Assert.That(sDamageableComponent.Damage.DamageDict[type3c.ID], Is.EqualTo(0));
+                Assert.That(sDamageableComponent.Damage.DamageDict[type3a.ID], Is.EqualTo(FixedPoint2.New(1.33)));
+                Assert.That(sDamageableComponent.Damage.DamageDict[type3b.ID], Is.EqualTo(FixedPoint2.New(3.33)));
+                Assert.That(sDamageableComponent.Damage.DamageDict[type3c.ID], Is.EqualTo(FixedPoint2.New(0)));
 
                 // Test Over-Healing
-                sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(group3, -100));
+                sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(group3, FixedPoint2.New(-100)));
                 Assert.That(DamageChanged);
                 DamageChanged = false;
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
 
                 // Test that if no health change occurred, returns false
                 sDamageableSystem.TryChangeDamage(uid, new DamageSpecifier(group3, -100));
                 Assert.That(DamageChanged, Is.False);
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
             });
         }
     }

Content.IntegrationTests/Tests/Destructible/DestructibleDamageGroupTest.cs

@@ -2,6 +2,7 @@ using System.Threading.Tasks;
 using Content.Server.Destructible.Thresholds.Triggers;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -60,8 +61,8 @@ namespace Content.IntegrationTests.Tests.Destructible
                 var bruteDamageGroup = sPrototypeManager.Index<DamageGroupPrototype>("TestBrute");
                 var burnDamageGroup = sPrototypeManager.Index<DamageGroupPrototype>("TestBurn");
 
-                DamageSpecifier bruteDamage = new(bruteDamageGroup,5);
-                DamageSpecifier burnDamage = new(burnDamageGroup,5);
+                DamageSpecifier bruteDamage = new(bruteDamageGroup, FixedPoint2.New(5));
+                DamageSpecifier burnDamage = new(burnDamageGroup, FixedPoint2.New(5));
 
                 // Raise brute damage to 5
                 sDamageableSystem.TryChangeDamage(sDestructibleEntity.Uid, bruteDamage, true);
@@ -112,7 +113,7 @@ namespace Content.IntegrationTests.Tests.Destructible
 
                 // Lower brute damage to 0
                 sDamageableSystem.TryChangeDamage(sDestructibleEntity.Uid, bruteDamage * -10);
-                Assert.That(sDamageableComponent.TotalDamage,Is.EqualTo(20));
+                Assert.That(sDamageableComponent.TotalDamage,Is.EqualTo(FixedPoint2.New(20)));
 
                 // No new thresholds reached, healing should not trigger it
                 Assert.IsEmpty(sTestThresholdListenerSystem.ThresholdsReached);

Content.IntegrationTests/Tests/Destructible/DestructibleThresholdActivationTest.cs

@@ -6,6 +6,7 @@ using Content.Server.Destructible.Thresholds.Behaviors;
 using Content.Server.Destructible.Thresholds.Triggers;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -186,7 +187,7 @@ namespace Content.IntegrationTests.Tests.Destructible
                 sDamageableSystem.TryChangeDamage(sDestructibleEntity.Uid, bluntDamage*5, true);
 
                 // Check that the total damage matches
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(50));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.New(50)));
 
                 // Both thresholds should have triggered
                 Assert.That(sTestThresholdListenerSystem.ThresholdsReached, Has.Exactly(2).Items);
@@ -234,7 +235,7 @@ namespace Content.IntegrationTests.Tests.Destructible
                 sDamageableSystem.SetAllDamage(sDamageableComponent, 0);
 
                 // Check that the entity has 0 damage
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(0));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.Zero));
 
                 // Set both thresholds to only trigger once
                 foreach (var destructibleThreshold in sDestructibleComponent.Thresholds)
@@ -247,7 +248,7 @@ namespace Content.IntegrationTests.Tests.Destructible
                 sDamageableSystem.TryChangeDamage(sDestructibleEntity.Uid, bluntDamage*5, true);
 
                 // Check that the total damage matches
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(50));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.New(50)));
 
                 // No thresholds should have triggered as they were already triggered before, and they are set to only trigger once
                 Assert.That(sTestThresholdListenerSystem.ThresholdsReached, Is.Empty);
@@ -260,7 +261,7 @@ namespace Content.IntegrationTests.Tests.Destructible
                 }
 
                 // Check that the total damage matches
-                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(50));
+                Assert.That(sDamageableComponent.TotalDamage, Is.EqualTo(FixedPoint2.New(50)));
 
                 // They shouldn't have been triggered by changing TriggersOnce
                 Assert.That(sTestThresholdListenerSystem.ThresholdsReached, Is.Empty);

Content.IntegrationTests/Tests/Fluids/PuddleTest.cs

@@ -4,6 +4,7 @@ using Content.Server.Fluids.Components;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Coordinates;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
@@ -56,7 +57,7 @@ namespace Content.IntegrationTests.Tests.Fluids
 
             server.Assert(() =>
             {
-                var solution = new Solution("water", ReagentUnit.New(20));
+                var solution = new Solution("water", FixedPoint2.New(20));
                 var puddle = solution.SpillAt(coordinates, "PuddleSmear");
                 Assert.NotNull(puddle);
             });
@@ -94,7 +95,7 @@ namespace Content.IntegrationTests.Tests.Fluids
             server.Assert(() =>
             {
                 var coordinates = grid.ToCoordinates();
-                var solution = new Solution("water", ReagentUnit.New(20));
+                var solution = new Solution("water", FixedPoint2.New(20));
                 var puddle = solution.SpillAt(coordinates, "PuddleSmear");
                 Assert.Null(puddle);
             });
@@ -154,7 +155,7 @@ namespace Content.IntegrationTests.Tests.Fluids
             // Spawn a puddle
             await server.WaitAssertion(() =>
             {
-                var solution = new Solution("water", ReagentUnit.New(amount));
+                var solution = new Solution("water", FixedPoint2.New(amount));
                 puddle = solution.SpillAt(sCoordinates, "PuddleSmear");
 
                 // Check that the puddle was created

Content.Server/AI/Utility/Considerations/Combat/Melee/MeleeWeaponDamageCon.cs

@@ -16,7 +16,7 @@ namespace Content.Server.AI.Utility.Considerations.Combat.Melee
             }
 
             // Just went with max health
-            return meleeWeaponComponent.Damage.Total / 300.0f;
+            return (meleeWeaponComponent.Damage.Total / 300.0f).Float();
         }
     }
 }

Content.Server/AI/Utility/Considerations/Combat/TargetHealthCon.cs

@@ -15,7 +15,7 @@ namespace Content.Server.AI.Utility.Considerations.Combat
                 return 0.0f;
             }
 
-            return damageableComponent.TotalDamage / 300.0f;
+            return (float) damageableComponent.TotalDamage / 300.0f;
         }
     }
 }

Content.Server/Administration/UI/AdminAddReagentEui.cs

@@ -6,6 +6,7 @@ using Content.Shared.Administration;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Eui;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 
@@ -42,8 +43,8 @@ namespace Content.Server.Administration.UI
 
             return new AdminAddReagentEuiState
             {
-                CurVolume = ReagentUnit.Zero,
-                MaxVolume = ReagentUnit.Zero
+                CurVolume = FixedPoint2.Zero,
+                MaxVolume = FixedPoint2.Zero
             };
         }
 

Content.Server/Atmos/EntitySystems/BarotraumaSystem.cs

@@ -5,6 +5,7 @@ using Content.Server.Atmos.Components;
 using Content.Shared.Alert;
 using Content.Shared.Atmos;
 using Content.Shared.Damage;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 
@@ -71,7 +72,7 @@ namespace Content.Server.Atmos.EntitySystems
 
             foreach (var (barotrauma, damageable, transform) in EntityManager.EntityQuery<BarotraumaComponent, DamageableComponent, ITransformComponent>())
             {
-                var totalDamage = 0;
+                var totalDamage = FixedPoint2.Zero;
                 foreach (var (barotraumaDamageType, _) in barotrauma.Damage.DamageDict)
                 {
                     if (!damageable.Damage.DamageDict.TryGetValue(barotraumaDamageType, out var damage))

Content.Server/Atmos/Reactions/WaterVaporReaction.cs

@@ -2,6 +2,7 @@ using Content.Server.Atmos.EntitySystems;
 using Content.Server.Fluids.Components;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Maps;
 using JetBrains.Annotations;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -35,7 +36,7 @@ namespace Content.Server.Atmos.Reactions
             mixture.AdjustMoles(GasId, -MolesPerUnit);
 
             var tileRef = tile.GridIndices.GetTileRef(tile.GridIndex);
-            tileRef.SpillAt(new Solution(Reagent, ReagentUnit.New(MolesPerUnit)), PuddlePrototype, sound: false);
+            tileRef.SpillAt(new Solution(Reagent, FixedPoint2.New(MolesPerUnit)), PuddlePrototype, sound: false);
 
             return ReactionResult.Reacting;
         }

Content.Server/Body/Behavior/StomachBehavior.cs

@@ -5,6 +5,7 @@ using Content.Server.Chemistry.EntitySystems;
 using Content.Shared.Body.Networks;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -65,7 +66,7 @@ namespace Content.Server.Body.Behavior
                     // This reagent has been in the stomach long enough, TRY to transfer it.
                     // But first, check if the reagent still exists, and how much is left.
                     // Some poor spessman may have washed down a potassium snack with some water.
-                    if (StomachSolution.ContainsReagent(delta.ReagentId, out ReagentUnit quantity))
+                    if (StomachSolution.ContainsReagent(delta.ReagentId, out FixedPoint2 quantity))
                     {
                         if (quantity > delta.Quantity)
                         {
@@ -97,10 +98,10 @@ namespace Content.Server.Body.Behavior
         /// <summary>
         ///     Max volume of internal solution storage
         /// </summary>
-        public ReagentUnit MaxVolume
+        public FixedPoint2 MaxVolume
         {
             get =>
-                StomachSolution?.MaxVolume ?? ReagentUnit.Zero;
+                StomachSolution?.MaxVolume ?? FixedPoint2.Zero;
 
             set
             {
@@ -116,7 +117,7 @@ namespace Content.Server.Body.Behavior
         /// </summary>
         [DataField("maxVolume")]
         [ViewVariables]
-        protected ReagentUnit InitialMaxVolume { get; private set; } = ReagentUnit.New(100);
+        protected FixedPoint2 InitialMaxVolume { get; private set; } = FixedPoint2.New(100);
 
         /// <summary>
         ///     Time in seconds between reagents being ingested and them being
@@ -181,10 +182,10 @@ namespace Content.Server.Body.Behavior
         protected class ReagentDelta
         {
             public readonly string ReagentId;
-            public readonly ReagentUnit Quantity;
+            public readonly FixedPoint2 Quantity;
             public float Lifetime { get; private set; }
 
-            public ReagentDelta(string reagentId, ReagentUnit quantity)
+            public ReagentDelta(string reagentId, FixedPoint2 quantity)
             {
                 ReagentId = reagentId;
                 Quantity = quantity;

Content.Server/Body/Circulatory/BloodstreamComponent.cs

@@ -7,6 +7,7 @@ using Content.Shared.Atmos;
 using Content.Shared.Body.Networks;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -23,7 +24,7 @@ namespace Content.Server.Body.Circulatory
         ///     Max volume of internal solution storage
         /// </summary>
         [DataField("maxVolume")] [ViewVariables]
-        private ReagentUnit _initialMaxVolume = ReagentUnit.New(250);
+        private FixedPoint2 _initialMaxVolume = FixedPoint2.New(250);
 
         /// <summary>
         ///     Internal solution for reagent storage
@@ -34,7 +35,7 @@ namespace Content.Server.Body.Circulatory
         ///     Empty volume of internal solution
         /// </summary>
         [ViewVariables]
-        public ReagentUnit EmptyVolume => _internalSolution?.AvailableVolume ?? ReagentUnit.Zero;
+        public FixedPoint2 EmptyVolume => _internalSolution?.AvailableVolume ?? FixedPoint2.Zero;
 
         [ViewVariables]
         public GasMixture Air { get; set; } = new(6)
@@ -60,8 +61,8 @@ namespace Content.Server.Body.Circulatory
         public override bool TryTransferSolution(Solution solution)
         {
             // For now doesn't support partial transfers
-            var current = _internalSolution?.CurrentVolume ?? ReagentUnit.Zero;
-            var max = _internalSolution?.MaxVolume ?? ReagentUnit.Zero;
+            var current = _internalSolution?.CurrentVolume ?? FixedPoint2.Zero;
+            var max = _internalSolution?.MaxVolume ?? FixedPoint2.Zero;
             if (solution.TotalVolume + current > max)
             {
                 return false;

Content.Server/Body/Metabolism/MetabolizerComponent.cs

@@ -2,6 +2,7 @@
 using System.ComponentModel.DataAnnotations;
 using Content.Shared.Body.Networks;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Dictionary;
@@ -47,7 +48,7 @@ namespace Content.Server.Body.Metabolism
         ///     Amount of reagent to metabolize, per metabolism cycle.
         /// </summary>
         [DataField("metabolismRate")]
-        public ReagentUnit MetabolismRate = ReagentUnit.New(1.0f);
+        public FixedPoint2 MetabolismRate = FixedPoint2.New(1.0f);
 
         /// <summary>
         ///     A list of effects to apply when these reagents are metabolized.

Content.Server/Body/Metabolism/MetabolizerSystem.cs

@@ -5,6 +5,7 @@ using Content.Shared.Body.Components;
 using Content.Shared.Body.Mechanism;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -64,7 +65,7 @@ namespace Content.Server.Body.Metabolism
                 {
                     if (body.Owner.HasComponent<BloodstreamComponent>()
                         && solutionsSys.TryGetSolution(body.Owner.Uid, comp.SolutionName, out solution)
-                        && solution.CurrentVolume >= ReagentUnit.Zero)
+                        && solution.CurrentVolume >= FixedPoint2.Zero)
                     {
                         reagentList = solution.Contents;
                     }

Content.Server/Botany/Components/PlantHolderComponent.cs

@@ -12,6 +12,7 @@ using Content.Shared.Audio;
 using Content.Shared.Botany;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
 using Content.Shared.Random.Helpers;
@@ -560,7 +561,7 @@ namespace Content.Server.Botany.Components
             }
             else
             {
-                var one = ReagentUnit.New(1);
+                var one = FixedPoint2.New(1);
                 foreach (var reagent in solutionSystem.RemoveEachReagent(solution, one))
                 {
                     var reagentProto = _prototypeManager.Index<ReagentPrototype>(reagent);
@@ -727,7 +728,7 @@ namespace Content.Server.Botany.Components
             if (solutionSystem.TryGetDrainableSolution(usingItem.Uid, out var solution)
                 && solutionSystem.TryGetSolution(Owner.Uid, SoilSolutionName, out var targetSolution))
             {
-                var amount = ReagentUnit.New(5);
+                var amount = FixedPoint2.New(5);
                 var sprayed = false;
                 var targetEntity = Owner.Uid;
                 var solutionEntity = usingItem.Uid;
@@ -735,7 +736,7 @@ namespace Content.Server.Botany.Components
                 if (usingItem.TryGetComponent(out SprayComponent? spray))
                 {
                     sprayed = true;
-                    amount = ReagentUnit.New(1);
+                    amount = FixedPoint2.New(1);
 
                     SoundSystem.Play(Filter.Pvs(usingItem), spray.SpraySound.GetSound(), usingItem,
                         AudioHelpers.WithVariation(0.125f));

Content.Server/Botany/Components/ProduceComponent.cs

@@ -1,5 +1,6 @@
 using Content.Server.Chemistry.EntitySystems;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -50,10 +51,10 @@ namespace Content.Server.Botany.Components
             solutionContainer.RemoveAllSolution();
             foreach (var (chem, quantity) in Seed.Chemicals)
             {
-                var amount = ReagentUnit.New(quantity.Min);
+                var amount = FixedPoint2.New(quantity.Min);
                 if (quantity.PotencyDivisor > 0 && Potency > 0)
-                    amount += ReagentUnit.New(Potency / quantity.PotencyDivisor);
-                amount = ReagentUnit.New((int) MathHelper.Clamp(amount.Float(), quantity.Min, quantity.Max));
+                    amount += FixedPoint2.New(Potency / quantity.PotencyDivisor);
+                amount = FixedPoint2.New((int) MathHelper.Clamp(amount.Float(), quantity.Min, quantity.Max));
                 solutionContainer.MaxVolume += amount;
                 solutionContainer.AddReagent(chem, amount);
             }

Content.Server/Chemistry/Components/ChemMasterComponent.cs

@@ -10,6 +10,7 @@ using Content.Server.UserInterface;
 using Content.Shared.ActionBlocker;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
 using Content.Shared.Random.Helpers;
@@ -184,7 +185,7 @@ namespace Content.Server.Chemistry.Components
             if (beaker is null || !beaker.TryGetComponent(out FitsInDispenserComponent? fits) ||
                 !EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(beaker.Uid, fits.Solution, out var beakerSolution))
             {
-                return new ChemMasterBoundUserInterfaceState(Powered, false, ReagentUnit.New(0), ReagentUnit.New(0),
+                return new ChemMasterBoundUserInterfaceState(Powered, false, FixedPoint2.New(0), FixedPoint2.New(0),
                     "", Owner.Name, new List<Solution.ReagentQuantity>(), BufferSolution.Contents, _bufferModeTransfer,
                     BufferSolution.TotalVolume);
             }
@@ -225,7 +226,7 @@ namespace Content.Server.Chemistry.Components
                 hands.PutInHand(item);
         }
 
-        private void TransferReagent(string id, ReagentUnit amount, bool isBuffer)
+        private void TransferReagent(string id, FixedPoint2 amount, bool isBuffer)
         {
             if (!HasBeaker && _bufferModeTransfer) return;
             var beaker = BeakerContainer.ContainedEntity;
@@ -240,16 +241,16 @@ namespace Content.Server.Chemistry.Components
                 {
                     if (reagent.ReagentId == id)
                     {
-                        ReagentUnit actualAmount;
+                        FixedPoint2 actualAmount;
                         if (
-                            amount == ReagentUnit
-                                .New(-1)) //amount is ReagentUnit.New(-1) when the client sends a message requesting to remove all solution from the container
+                            amount == FixedPoint2
+                                .New(-1)) //amount is FixedPoint2.New(-1) when the client sends a message requesting to remove all solution from the container
                         {
-                            actualAmount = ReagentUnit.Min(reagent.Quantity, beakerSolution.AvailableVolume);
+                            actualAmount = FixedPoint2.Min(reagent.Quantity, beakerSolution.AvailableVolume);
                         }
                         else
                         {
-                            actualAmount = ReagentUnit.Min(reagent.Quantity, amount, beakerSolution.AvailableVolume);
+                            actualAmount = FixedPoint2.Min(reagent.Quantity, amount, beakerSolution.AvailableVolume);
                         }
 
 
@@ -271,14 +272,14 @@ namespace Content.Server.Chemistry.Components
                 {
                     if (reagent.ReagentId == id)
                     {
-                        ReagentUnit actualAmount;
-                        if (amount == ReagentUnit.New(-1))
+                        FixedPoint2 actualAmount;
+                        if (amount == FixedPoint2.New(-1))
                         {
                             actualAmount = reagent.Quantity;
                         }
                         else
                         {
-                            actualAmount = ReagentUnit.Min(reagent.Quantity, amount);
+                            actualAmount = FixedPoint2.Min(reagent.Quantity, amount);
                         }
 
                         EntitySystem.Get<SolutionContainerSystem>().TryRemoveReagent(beaker.Uid, beakerSolution, id, actualAmount);
@@ -298,11 +299,11 @@ namespace Content.Server.Chemistry.Components
 
             if (action == UiAction.CreateBottles)
             {
-                var individualVolume = BufferSolution.TotalVolume / ReagentUnit.New(bottleAmount);
-                if (individualVolume < ReagentUnit.New(1))
+                var individualVolume = BufferSolution.TotalVolume / FixedPoint2.New(bottleAmount);
+                if (individualVolume < FixedPoint2.New(1))
                     return;
 
-                var actualVolume = ReagentUnit.Min(individualVolume, ReagentUnit.New(30));
+                var actualVolume = FixedPoint2.Min(individualVolume, FixedPoint2.New(30));
                 for (int i = 0; i < bottleAmount; i++)
                 {
                     var bottle = Owner.EntityManager.SpawnEntity("ChemistryEmptyBottle01", Owner.Transform.Coordinates);
@@ -331,11 +332,11 @@ namespace Content.Server.Chemistry.Components
             }
             else //Pills
             {
-                var individualVolume = BufferSolution.TotalVolume / ReagentUnit.New(pillAmount);
-                if (individualVolume < ReagentUnit.New(1))
+                var individualVolume = BufferSolution.TotalVolume / FixedPoint2.New(pillAmount);
+                if (individualVolume < FixedPoint2.New(1))
                     return;
 
-                var actualVolume = ReagentUnit.Min(individualVolume, ReagentUnit.New(50));
+                var actualVolume = FixedPoint2.Min(individualVolume, FixedPoint2.New(50));
                 for (int i = 0; i < pillAmount; i++)
                 {
                     var pill = Owner.EntityManager.SpawnEntity("pill", Owner.Transform.Coordinates);

Content.Server/Chemistry/Components/FoamSolutionAreaEffectComponent.cs

@@ -3,6 +3,7 @@ using Content.Server.Chemistry.EntitySystems;
 using Content.Server.Inventory.Components;
 using Content.Server.Items;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Foam;
 using Content.Shared.Inventory;
 using Robust.Server.GameObjects;
@@ -56,7 +57,7 @@ namespace Content.Server.Chemistry.Components
             }
 
             var cloneSolution = solution.Clone();
-            var transferAmount = ReagentUnit.Min(cloneSolution.TotalVolume * solutionFraction * (1 - protection),
+            var transferAmount = FixedPoint2.Min(cloneSolution.TotalVolume * solutionFraction * (1 - protection),
                 bloodstream.EmptyVolume);
             var transferSolution = cloneSolution.SplitSolution(transferAmount);
 

Content.Server/Chemistry/Components/HyposprayComponent.cs

@@ -4,6 +4,7 @@ using Content.Server.Interaction.Components;
 using Content.Server.Weapon.Melee;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState.Components;
 using Content.Shared.Popups;
 using Content.Shared.Sound;
@@ -27,7 +28,7 @@ namespace Content.Server.Chemistry.Components
 
         [DataField("TransferAmount")]
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit TransferAmount { get; set; } = ReagentUnit.New(5);
+        public FixedPoint2 TransferAmount { get; set; } = FixedPoint2.New(5);
 
         [DataField("InjectSound")]
         private SoundSpecifier _injectSound = new SoundPathSpecifier("/Audio/Items/hypospray.ogg");
@@ -85,7 +86,7 @@ namespace Content.Server.Chemistry.Components
             SoundSystem.Play(Filter.Pvs(user), _injectSound.GetSound(), user);
 
             // Get transfer amount. May be smaller than _transferAmount if not enough room
-            var realTransferAmount = ReagentUnit.Min(TransferAmount, targetSolution.AvailableVolume);
+            var realTransferAmount = FixedPoint2.Min(TransferAmount, targetSolution.AvailableVolume);
 
             if (realTransferAmount <= 0)
             {
@@ -126,7 +127,7 @@ namespace Content.Server.Chemistry.Components
             var solutionSys = Owner.EntityManager.EntitySysManager.GetEntitySystem<SolutionContainerSystem>();
             return solutionSys.TryGetSolution(Owner.Uid, SolutionName, out var solution)
                 ? new HyposprayComponentState(solution.CurrentVolume, solution.MaxVolume)
-                : new HyposprayComponentState(ReagentUnit.Zero, ReagentUnit.Zero);
+                : new HyposprayComponentState(FixedPoint2.Zero, FixedPoint2.Zero);
         }
     }
 }

Content.Server/Chemistry/Components/InjectorComponent.cs

@@ -6,6 +6,7 @@ using Content.Server.Chemistry.EntitySystems;
 using Content.Shared.Body.Networks;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Popups;
@@ -41,14 +42,14 @@ namespace Content.Server.Chemistry.Components
         /// </summary>
         [ViewVariables]
         [DataField("transferAmount")]
-        private ReagentUnit _transferAmount = ReagentUnit.New(5);
+        private FixedPoint2 _transferAmount = FixedPoint2.New(5);
 
         /// <summary>
         /// Initial storage volume of the injector
         /// </summary>
         [ViewVariables]
         [DataField("initialMaxVolume")]
-        private ReagentUnit _initialMaxVolume = ReagentUnit.New(15);
+        private FixedPoint2 _initialMaxVolume = FixedPoint2.New(15);
 
         private InjectorToggleMode _toggleState;
 
@@ -180,7 +181,7 @@ namespace Content.Server.Chemistry.Components
                 return;
 
             // Get transfer amount. May be smaller than _transferAmount if not enough room
-            var realTransferAmount = ReagentUnit.Min(_transferAmount, targetBloodstream.EmptyVolume);
+            var realTransferAmount = FixedPoint2.Min(_transferAmount, targetBloodstream.EmptyVolume);
 
             if (realTransferAmount <= 0)
             {
@@ -223,7 +224,7 @@ namespace Content.Server.Chemistry.Components
             }
 
             // Get transfer amount. May be smaller than _transferAmount if not enough room
-            var realTransferAmount = ReagentUnit.Min(_transferAmount, targetSolution.AvailableVolume);
+            var realTransferAmount = FixedPoint2.Min(_transferAmount, targetSolution.AvailableVolume);
 
             if (realTransferAmount <= 0)
             {
@@ -285,7 +286,7 @@ namespace Content.Server.Chemistry.Components
             }
 
             // Get transfer amount. May be smaller than _transferAmount if not enough room
-            var realTransferAmount = ReagentUnit.Min(_transferAmount, targetSolution.DrawAvailable);
+            var realTransferAmount = FixedPoint2.Min(_transferAmount, targetSolution.DrawAvailable);
 
             if (realTransferAmount <= 0)
             {
@@ -317,8 +318,8 @@ namespace Content.Server.Chemistry.Components
             Owner.EntityManager.EntitySysManager.GetEntitySystem<SolutionContainerSystem>()
                 .TryGetSolution(Owner.Uid, SolutionName, out var solution);
 
-            var currentVolume = solution?.CurrentVolume ?? ReagentUnit.Zero;
-            var maxVolume = solution?.MaxVolume ?? ReagentUnit.Zero;
+            var currentVolume = solution?.CurrentVolume ?? FixedPoint2.Zero;
+            var maxVolume = solution?.MaxVolume ?? FixedPoint2.Zero;
 
             return new InjectorComponentState(currentVolume, maxVolume, ToggleState);
         }

Content.Server/Chemistry/Components/MeleeChemicalInjectorComponent.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -13,7 +14,7 @@ namespace Content.Server.Chemistry.Components
 
         [ViewVariables(VVAccess.ReadWrite)]
         [DataField("transferAmount")]
-        public ReagentUnit TransferAmount { get; set; } = ReagentUnit.New(1);
+        public FixedPoint2 TransferAmount { get; set; } = FixedPoint2.New(1);
 
         [ViewVariables(VVAccess.ReadWrite)]
         public float TransferEfficiency { get => _transferEfficiency; set => _transferEfficiency = Math.Clamp(value, 0, 1); }

Content.Server/Chemistry/Components/ReagentDispenserComponent.cs

@@ -12,6 +12,7 @@ using Content.Shared.ActionBlocker;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Dispenser;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
 using Content.Shared.Sound;
@@ -53,7 +54,7 @@ namespace Content.Server.Chemistry.Components
         private SoundSpecifier _clickSound = new SoundPathSpecifier("/Audio/Machines/machine_switch.ogg");
 
         [ViewVariables] public bool HasBeaker => BeakerContainer.ContainedEntity != null;
-        [ViewVariables] private ReagentUnit _dispenseAmount = ReagentUnit.New(10);
+        [ViewVariables] private FixedPoint2 _dispenseAmount = FixedPoint2.New(10);
 
         [UsedImplicitly]
         [ViewVariables]
@@ -163,31 +164,31 @@ namespace Content.Server.Chemistry.Components
                     TryClear();
                     break;
                 case UiButton.SetDispenseAmount1:
-                    _dispenseAmount = ReagentUnit.New(1);
+                    _dispenseAmount = FixedPoint2.New(1);
                     break;
                 case UiButton.SetDispenseAmount5:
-                    _dispenseAmount = ReagentUnit.New(5);
+                    _dispenseAmount = FixedPoint2.New(5);
                     break;
                 case UiButton.SetDispenseAmount10:
-                    _dispenseAmount = ReagentUnit.New(10);
+                    _dispenseAmount = FixedPoint2.New(10);
                     break;
                 case UiButton.SetDispenseAmount15:
-                    _dispenseAmount = ReagentUnit.New(15);
+                    _dispenseAmount = FixedPoint2.New(15);
                     break;
                 case UiButton.SetDispenseAmount20:
-                    _dispenseAmount = ReagentUnit.New(20);
+                    _dispenseAmount = FixedPoint2.New(20);
                     break;
                 case UiButton.SetDispenseAmount25:
-                    _dispenseAmount = ReagentUnit.New(25);
+                    _dispenseAmount = FixedPoint2.New(25);
                     break;
                 case UiButton.SetDispenseAmount30:
-                    _dispenseAmount = ReagentUnit.New(30);
+                    _dispenseAmount = FixedPoint2.New(30);
                     break;
                 case UiButton.SetDispenseAmount50:
-                    _dispenseAmount = ReagentUnit.New(50);
+                    _dispenseAmount = FixedPoint2.New(50);
                     break;
                 case UiButton.SetDispenseAmount100:
-                    _dispenseAmount = ReagentUnit.New(100);
+                    _dispenseAmount = FixedPoint2.New(100);
                     break;
                 case UiButton.Dispense:
                     if (HasBeaker)
@@ -237,8 +238,8 @@ namespace Content.Server.Chemistry.Components
             if (beaker == null || !beaker.TryGetComponent(out FitsInDispenserComponent? fits) ||
                 !EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(beaker.Uid, fits.Solution, out var solution))
             {
-                return new ReagentDispenserBoundUserInterfaceState(Powered, false, ReagentUnit.New(0),
-                    ReagentUnit.New(0),
+                return new ReagentDispenserBoundUserInterfaceState(Powered, false, FixedPoint2.New(0),
+                    FixedPoint2.New(0),
                     string.Empty, Inventory, Owner.Name, null, _dispenseAmount);
             }
 

Content.Server/Chemistry/Components/ReagentTankComponent.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -13,7 +14,7 @@ namespace Content.Server.Chemistry.Components
 
         [DataField("transferAmount")]
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit TransferAmount { get; set; } = ReagentUnit.New(10);
+        public FixedPoint2 TransferAmount { get; set; } = FixedPoint2.New(10);
 
         [DataField("tankType")]
         [ViewVariables(VVAccess.ReadWrite)]

Content.Server/Chemistry/Components/SmokeSolutionAreaEffectComponent.cs

@@ -3,6 +3,7 @@ using Content.Server.Body.Respiratory;
 using Content.Server.Chemistry.EntitySystems;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Smoking;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
@@ -39,12 +40,12 @@ namespace Content.Server.Chemistry.Components
 
             var chemistry = EntitySystem.Get<ChemistrySystem>();
             var cloneSolution = solution.Clone();
-            var transferAmount = ReagentUnit.Min(cloneSolution.TotalVolume * solutionFraction, bloodstream.EmptyVolume);
+            var transferAmount = FixedPoint2.Min(cloneSolution.TotalVolume * solutionFraction, bloodstream.EmptyVolume);
             var transferSolution = cloneSolution.SplitSolution(transferAmount);
 
             foreach (var reagentQuantity in transferSolution.Contents.ToArray())
             {
-                if (reagentQuantity.Quantity == ReagentUnit.Zero) continue;
+                if (reagentQuantity.Quantity == FixedPoint2.Zero) continue;
                 chemistry.ReactionEntity(entity, ReactionMethod.Ingestion, reagentQuantity.ReagentId, reagentQuantity.Quantity, transferSolution);
             }
 

Content.Server/Chemistry/Components/SolutionAreaEffectComponent.cs

@@ -6,6 +6,7 @@ using Content.Server.Coordinates.Helpers;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
@@ -133,7 +134,7 @@ namespace Content.Server.Chemistry.Components
 
             foreach (var reagentQuantity in solution.Contents)
             {
-                if (reagentQuantity.Quantity == ReagentUnit.Zero) continue;
+                if (reagentQuantity.Quantity == FixedPoint2.Zero) continue;
                 var reagent = PrototypeManager.Index<ReagentPrototype>(reagentQuantity.ReagentId);
 
                 // React with the tile the effect is on
@@ -164,7 +165,7 @@ namespace Content.Server.Chemistry.Components
                 return;
 
             var addSolution =
-                solution.SplitSolution(ReagentUnit.Min(solution.TotalVolume, solutionArea.AvailableVolume));
+                solution.SplitSolution(FixedPoint2.Min(solution.TotalVolume, solutionArea.AvailableVolume));
 
             EntitySystem.Get<SolutionContainerSystem>().TryAddSolution(Owner.Uid, solutionArea, addSolution);
 

Content.Server/Chemistry/Components/SolutionInjectOnCollideComponent.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -16,7 +17,7 @@ namespace Content.Server.Chemistry.Components
 
         [ViewVariables(VVAccess.ReadWrite)]
         [DataField("transferAmount")]
-        public ReagentUnit TransferAmount { get; set; } = ReagentUnit.New(1);
+        public FixedPoint2 TransferAmount { get; set; } = FixedPoint2.New(1);
 
         [ViewVariables(VVAccess.ReadWrite)]
         public float TransferEfficiency { get => _transferEfficiency; set => _transferEfficiency = Math.Clamp(value, 0, 1); }

Content.Server/Chemistry/Components/SolutionTransferComponent.cs

@@ -6,6 +6,7 @@ using Content.Server.UserInterface;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Popups;
@@ -35,21 +36,21 @@ namespace Content.Server.Chemistry.Components
         /// </summary>
         [DataField("transferAmount")]
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit TransferAmount { get; set; } = ReagentUnit.New(5);
+        public FixedPoint2 TransferAmount { get; set; } = FixedPoint2.New(5);
 
         /// <summary>
         ///     The minimum amount of solution that can be transferred at once from this solution.
         /// </summary>
         [DataField("minTransferAmount")]
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit MinimumTransferAmount { get; set; } = ReagentUnit.New(5);
+        public FixedPoint2 MinimumTransferAmount { get; set; } = FixedPoint2.New(5);
 
         /// <summary>
         ///     The maximum amount of solution that can be transferred at once from this solution.
         /// </summary>
         [DataField("maxTransferAmount")]
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit MaximumTransferAmount { get; set; } = ReagentUnit.New(50);
+        public FixedPoint2 MaximumTransferAmount { get; set; } = FixedPoint2.New(50);
 
         /// <summary>
         ///     Can this entity take reagent from reagent tanks?
@@ -95,14 +96,14 @@ namespace Content.Server.Chemistry.Components
 
                     serverMsg.Session.AttachedEntity?.PopupMessage(Loc.GetString("comp-solution-transfer-set-amount",
                         ("amount", amount)));
-                    SetTransferAmount(ReagentUnit.New(amount));
+                    SetTransferAmount(FixedPoint2.New(amount));
                     break;
             }
         }
 
-        public void SetTransferAmount(ReagentUnit amount)
+        public void SetTransferAmount(FixedPoint2 amount)
         {
-            amount = ReagentUnit.New(Math.Clamp(amount.Int(), MinimumTransferAmount.Int(),
+            amount = FixedPoint2.New(Math.Clamp(amount.Int(), MinimumTransferAmount.Int(),
                 MaximumTransferAmount.Int()));
             TransferAmount = amount;
         }
@@ -162,30 +163,30 @@ namespace Content.Server.Chemistry.Components
         }
 
         /// <returns>The actual amount transferred.</returns>
-        private static ReagentUnit DoTransfer(IEntity user,
+        private static FixedPoint2 DoTransfer(IEntity user,
             IEntity sourceEntity,
             Solution source,
             IEntity targetEntity,
             Solution target,
-            ReagentUnit amount)
+            FixedPoint2 amount)
         {
 
             if (source.DrainAvailable == 0)
             {
                 sourceEntity.PopupMessage(user,
                     Loc.GetString("comp-solution-transfer-is-empty", ("target", sourceEntity)));
-                return ReagentUnit.Zero;
+                return FixedPoint2.Zero;
             }
 
             if (target.AvailableVolume == 0)
             {
                 targetEntity.PopupMessage(user,
                     Loc.GetString("comp-solution-transfer-is-full", ("target", targetEntity)));
-                return ReagentUnit.Zero;
+                return FixedPoint2.Zero;
             }
 
             var actualAmount =
-                ReagentUnit.Min(amount, ReagentUnit.Min(source.DrainAvailable, target.AvailableVolume));
+                FixedPoint2.Min(amount, FixedPoint2.Min(source.DrainAvailable, target.AvailableVolume));
 
             var solution = EntitySystem.Get<SolutionContainerSystem>().Drain(sourceEntity.Uid, source, actualAmount);
             EntitySystem.Get<SolutionContainerSystem>().Refill(targetEntity.Uid, target, solution);

Content.Server/Chemistry/Components/VaporComponent.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Vapor;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
@@ -12,7 +13,7 @@ namespace Content.Server.Chemistry.Components
     {
         [ViewVariables]
         [DataField("transferAmount")]
-        internal ReagentUnit TransferAmount = ReagentUnit.New(0.5);
+        internal FixedPoint2 TransferAmount = FixedPoint2.New(0.5);
 
         internal bool Reached;
         internal float ReactTimer;

Content.Server/Chemistry/EntitySystems/ChemicalReactionSystem.cs

@@ -1,6 +1,7 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Player;
@@ -9,7 +10,7 @@ namespace Content.Server.Chemistry.EntitySystems
 {
     public class ChemicalReactionSystem : SharedChemicalReactionSystem
     {
-        protected override void OnReaction(Solution solution, ReactionPrototype reaction, IEntity owner, ReagentUnit unitReactions)
+        protected override void OnReaction(Solution solution, ReactionPrototype reaction, IEntity owner, FixedPoint2 unitReactions)
         {
             base.OnReaction(solution, reaction, owner, unitReactions);
 

Content.Server/Chemistry/EntitySystems/RehydratableSystem.cs

@@ -1,6 +1,7 @@
 using Content.Server.Chemistry.Components;
 using Content.Server.Popups;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -21,7 +22,7 @@ namespace Content.Server.Chemistry.EntitySystems
 
         private void OnSolutionChange(EntityUid uid, RehydratableComponent component, SolutionChangedEvent args)
         {
-            if (_solutionsSystem.GetReagentQuantity(uid, component.CatalystPrototype) > ReagentUnit.Zero)
+            if (_solutionsSystem.GetReagentQuantity(uid, component.CatalystPrototype) > FixedPoint2.Zero)
             {
                 Expand(component, component.Owner);
             }

Content.Server/Chemistry/EntitySystems/SolutionContainerSystem.Capabilities.cs

@@ -2,6 +2,7 @@
 using Content.Server.Chemistry.Components.SolutionManager;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 
 namespace Content.Server.Chemistry.EntitySystems
@@ -26,7 +27,7 @@ namespace Content.Server.Chemistry.EntitySystems
             TryAddSolution(targetUid, targetSolution, addedSolution);
         }
 
-        public Solution Draw(EntityUid targetUid, Solution solution, ReagentUnit amount,
+        public Solution Draw(EntityUid targetUid, Solution solution, FixedPoint2 amount,
             DrawableSolutionComponent? drawableSolution = null)
         {
             if (!Resolve(targetUid, ref drawableSolution, false))
@@ -35,7 +36,7 @@ namespace Content.Server.Chemistry.EntitySystems
             return SplitSolution(targetUid, solution, amount);
         }
 
-        public Solution Drain(EntityUid targetUid, Solution targetSolution, ReagentUnit amount,
+        public Solution Drain(EntityUid targetUid, Solution targetSolution, FixedPoint2 amount,
             DrainableSolutionComponent? drainableSolution = null)
         {
             if (!Resolve(targetUid, ref drainableSolution, false))
@@ -106,10 +107,10 @@ namespace Content.Server.Chemistry.EntitySystems
             return true;
         }
 
-        public ReagentUnit DrainAvailable(EntityUid uid)
+        public FixedPoint2 DrainAvailable(EntityUid uid)
         {
             return !TryGetDrainableSolution(uid, out var solution)
-                ? ReagentUnit.Zero
+                ? FixedPoint2.Zero
                 : solution.CurrentVolume;
         }
 

Content.Server/Chemistry/EntitySystems/SolutionContainerSystem.cs

@@ -7,6 +7,7 @@ using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -51,7 +52,7 @@ namespace Content.Server.Chemistry.EntitySystems
             foreach (var keyValue in component.Solutions)
             {
                 var solutionHolder = keyValue.Value;
-                if (solutionHolder.MaxVolume == ReagentUnit.Zero)
+                if (solutionHolder.MaxVolume == FixedPoint2.Zero)
                 {
                     solutionHolder.MaxVolume = solutionHolder.TotalVolume > solutionHolder.InitialMaxVolume
                         ? solutionHolder.TotalVolume
@@ -115,7 +116,7 @@ namespace Content.Server.Chemistry.EntitySystems
         /// <param name="solutionHolder"></param>
         /// <param name="quantity">the volume of solution to remove.</param>
         /// <returns>The solution that was removed.</returns>
-        public Solution SplitSolution(EntityUid targetUid, Solution solutionHolder, ReagentUnit quantity)
+        public Solution SplitSolution(EntityUid targetUid, Solution solutionHolder, FixedPoint2 quantity)
         {
             var splitSol = solutionHolder.SplitSolution(quantity);
             UpdateChemicals(targetUid, solutionHolder);
@@ -164,8 +165,8 @@ namespace Content.Server.Chemistry.EntitySystems
         /// <param name="quantity">The amount of reagent to add.</param>
         /// <param name="acceptedQuantity">The amount of reagent successfully added.</param>
         /// <returns>If all the reagent could be added.</returns>
-        public bool TryAddReagent(EntityUid targetUid, Solution targetSolution, string reagentId, ReagentUnit quantity,
-            out ReagentUnit acceptedQuantity)
+        public bool TryAddReagent(EntityUid targetUid, Solution targetSolution, string reagentId, FixedPoint2 quantity,
+            out FixedPoint2 acceptedQuantity)
         {
             acceptedQuantity = targetSolution.AvailableVolume > quantity ? quantity : targetSolution.AvailableVolume;
             targetSolution.AddReagent(reagentId, acceptedQuantity);
@@ -184,7 +185,7 @@ namespace Content.Server.Chemistry.EntitySystems
         /// <param name="reagentId">The Id of the reagent to remove.</param>
         /// <param name="quantity">The amount of reagent to remove.</param>
         /// <returns>If the reagent to remove was found in the container.</returns>
-        public bool TryRemoveReagent(EntityUid targetUid, Solution? container, string reagentId, ReagentUnit quantity)
+        public bool TryRemoveReagent(EntityUid targetUid, Solution? container, string reagentId, FixedPoint2 quantity)
         {
             if (container == null || !container.ContainsReagent(reagentId))
                 return false;
@@ -248,7 +249,7 @@ namespace Content.Server.Chemistry.EntitySystems
             return solutionsMgr.Solutions[name];
         }
 
-        public string[] RemoveEachReagent(Solution solution, ReagentUnit quantity)
+        public string[] RemoveEachReagent(Solution solution, FixedPoint2 quantity)
         {
             var removedReagent = new string[solution.Contents.Count];
             if (quantity <= 0)
@@ -284,9 +285,9 @@ namespace Content.Server.Chemistry.EntitySystems
             }
         }
 
-        public ReagentUnit GetReagentQuantity(EntityUid ownerUid, string reagentId)
+        public FixedPoint2 GetReagentQuantity(EntityUid ownerUid, string reagentId)
         {
-            var reagentQuantity = ReagentUnit.New(0);
+            var reagentQuantity = FixedPoint2.New(0);
             if (EntityManager.TryGetEntity(ownerUid, out var owner)
                 && owner.TryGetComponent(out SolutionContainerManagerComponent? managerComponent))
             {

Content.Server/Chemistry/EntitySystems/SolutionTransferSystem.cs

@@ -6,6 +6,7 @@ using Robust.Shared.Localization;
 using Robust.Server.GameObjects;
 using System.Collections.Generic;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Popups;
 
 namespace Content.Server.Chemistry.EntitySystems
@@ -53,7 +54,7 @@ namespace Content.Server.Chemistry.EntitySystems
                 verb.Category = VerbCategory.SetTransferAmount;
                 verb.Act = () =>
                 {
-                    component.TransferAmount = ReagentUnit.New(amount);
+                    component.TransferAmount = FixedPoint2.New(amount);
                     args.User.PopupMessage(Loc.GetString("comp-solution-transfer-set-amount", ("amount", amount)));
                 };
 

Content.Server/Chemistry/EntitySystems/VaporSystem.cs

@@ -2,6 +2,7 @@
 using Content.Server.Chemistry.Components.SolutionManager;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Physics;
 using Content.Shared.Vapor;
 using JetBrains.Annotations;
@@ -104,7 +105,7 @@ namespace Content.Server.Chemistry.EntitySystems
                 var tile = mapGrid.GetTileRef(entity.Transform.Coordinates.ToVector2i(EntityManager, _mapManager));
                 foreach (var reagentQuantity in contents.Contents.ToArray())
                 {
-                    if (reagentQuantity.Quantity == ReagentUnit.Zero) continue;
+                    if (reagentQuantity.Quantity == FixedPoint2.Zero) continue;
                     var reagent = _protoManager.Index<ReagentPrototype>(reagentQuantity.ReagentId);
                     _solutionContainerSystem.TryRemoveReagent(vapor.Owner.Uid, contents, reagentQuantity.ReagentId,
                         reagent.ReactionTile(tile, (reagentQuantity.Quantity / vapor.TransferAmount) * 0.25f));

Content.Server/Chemistry/ReagentEffectConditions/ReagentThreshold.cs

@@ -1,5 +1,6 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 
@@ -12,10 +13,10 @@ namespace Content.Server.Chemistry.ReagentEffectConditions
     public class ReagentThreshold : ReagentEffectCondition
     {
         [DataField("min")]
-        public ReagentUnit Min = ReagentUnit.Zero;
+        public FixedPoint2 Min = FixedPoint2.Zero;
 
         [DataField("max")]
-        public ReagentUnit Max = ReagentUnit.MaxValue;
+        public FixedPoint2 Max = FixedPoint2.MaxValue;
 
         public override bool Condition(IEntity solutionEntity, Solution.ReagentQuantity reagent)
         {

Content.Server/Chemistry/ReagentEntityReactions/AddToSolutionReaction.cs

@@ -2,6 +2,7 @@ using System.Collections.Generic;
 using Content.Server.Chemistry.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -19,7 +20,7 @@ namespace Content.Server.Chemistry.ReagentEntityReactions
         // ReSharper disable once CollectionNeverUpdated.Local
         private readonly HashSet<string> _reagents = new();
 
-        protected override void React(IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Solution? source)
+        protected override void React(IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Solution? source)
         {
             // TODO see if this is correct
             if (!EntitySystem.Get<SolutionContainerSystem>()

Content.Server/Chemistry/ReagentEntityReactions/ExtinguishReaction.cs

@@ -3,6 +3,7 @@ using Content.Server.Atmos.Components;
 using Content.Server.Atmos.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -17,7 +18,7 @@ namespace Content.Server.Chemistry.ReagentEntityReactions
         // ReSharper disable once CollectionNeverUpdated.Local
         private readonly HashSet<string> _reagents = new ();
 
-        protected override void React(IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Solution? source)
+        protected override void React(IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Solution? source)
         {
             if (!entity.TryGetComponent(out FlammableComponent? flammable) || !_reagents.Contains(reagent.ID)) return;
 

Content.Server/Chemistry/ReagentEntityReactions/FlammableReaction.cs

@@ -3,6 +3,7 @@ using Content.Server.Atmos.Components;
 using Content.Server.Atmos.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -17,7 +18,7 @@ namespace Content.Server.Chemistry.ReagentEntityReactions
         // ReSharper disable once CollectionNeverUpdated.Local
         private readonly HashSet<string> _reagents = new ();
 
-        protected override void React(IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Solution? source)
+        protected override void React(IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Solution? source)
         {
             if (!entity.TryGetComponent(out FlammableComponent? flammable) || !_reagents.Contains(reagent.ID)) return;
 

Content.Server/Chemistry/ReagentEntityReactions/WashCreamPieReaction.cs

@@ -2,6 +2,7 @@ using System.Collections.Generic;
 using Content.Server.Nutrition.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Nutrition.Components;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
@@ -17,7 +18,7 @@ namespace Content.Server.Chemistry.ReagentEntityReactions
         // ReSharper disable once CollectionNeverUpdated.Local
         private readonly HashSet<string> _reagents = new ();
 
-        protected override void React(IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Solution? source)
+        protected override void React(IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Solution? source)
         {
             if (!entity.TryGetComponent(out CreamPiedComponent? creamPied) || !_reagents.Contains(reagent.ID)) return;
 

Content.Server/Chemistry/TileReactions/CleanTileReaction.cs

@@ -5,6 +5,7 @@ using Content.Server.GameObjects.Components;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Map;
 using Robust.Shared.Serialization.Manager.Attributes;
 
@@ -13,10 +14,10 @@ namespace Content.Server.Chemistry.TileReactions
     [DataDefinition]
     public class CleanTileReaction : ITileReaction
     {
-        ReagentUnit ITileReaction.TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume)
+        FixedPoint2 ITileReaction.TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume)
         {
             var entities = tile.GetEntitiesInTileFast().ToArray();
-            var amount = ReagentUnit.Zero;
+            var amount = FixedPoint2.Zero;
             foreach (var entity in entities)
             {
                 if (entity.TryGetComponent(out CleanableComponent? cleanable))

Content.Server/Chemistry/TileReactions/ExtinguishTileReaction.cs

@@ -5,6 +5,7 @@ using Content.Shared.Atmos;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Maps;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
@@ -19,17 +20,17 @@ namespace Content.Server.Chemistry.TileReactions
     {
         [DataField("coolingTemperature")] private float _coolingTemperature = 2f;
 
-        public ReagentUnit TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume)
+        public FixedPoint2 TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume)
         {
-            if (reactVolume <= ReagentUnit.Zero || tile.Tile.IsEmpty)
-                return ReagentUnit.Zero;
+            if (reactVolume <= FixedPoint2.Zero || tile.Tile.IsEmpty)
+                return FixedPoint2.Zero;
 
             var atmosphereSystem = EntitySystem.Get<AtmosphereSystem>();
 
             var environment = atmosphereSystem.GetTileMixture(tile.GridIndex, tile.GridIndices, true);
 
             if (environment == null || !atmosphereSystem.IsHotspotActive(tile.GridIndex, tile.GridIndices))
-                return ReagentUnit.Zero;
+                return FixedPoint2.Zero;
 
             environment.Temperature =
                 MathF.Max(MathF.Min(environment.Temperature - (_coolingTemperature * 1000f),
@@ -38,7 +39,7 @@ namespace Content.Server.Chemistry.TileReactions
             atmosphereSystem.React(tile.GridIndex, tile.GridIndices);
             atmosphereSystem.HotspotExtinguish(tile.GridIndex, tile.GridIndices);
 
-            return ReagentUnit.Zero;
+            return FixedPoint2.Zero;
         }
     }
 }

Content.Server/Chemistry/TileReactions/FlammableTileReaction.cs

@@ -4,6 +4,7 @@ using Content.Server.Atmos.EntitySystems;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Maps;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
@@ -18,16 +19,16 @@ namespace Content.Server.Chemistry.TileReactions
     {
         [DataField("temperatureMultiplier")] private float _temperatureMultiplier = 1.15f;
 
-        public ReagentUnit TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume)
+        public FixedPoint2 TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume)
         {
-            if (reactVolume <= ReagentUnit.Zero || tile.Tile.IsEmpty)
-                return ReagentUnit.Zero;
+            if (reactVolume <= FixedPoint2.Zero || tile.Tile.IsEmpty)
+                return FixedPoint2.Zero;
 
             var atmosphereSystem = EntitySystem.Get<AtmosphereSystem>();
 
             var environment = atmosphereSystem.GetTileMixture(tile.GridIndex, tile.GridIndices, true);
             if (environment == null || !atmosphereSystem.IsHotspotActive(tile.GridIndex, tile.GridIndices))
-                return ReagentUnit.Zero;
+                return FixedPoint2.Zero;
 
             environment.Temperature *= MathF.Max(_temperatureMultiplier * reactVolume.Float(), 1f);
             atmosphereSystem.React(tile.GridIndex, tile.GridIndices);

Content.Server/Chemistry/TileReactions/SpillIfPuddlePresentTileReaction.cs

@@ -2,6 +2,7 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.Map;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -12,11 +13,11 @@ namespace Content.Server.Chemistry.TileReactions
     [DataDefinition]
     public class SpillIfPuddlePresentTileReaction : ITileReaction
     {
-        public ReagentUnit TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume)
+        public FixedPoint2 TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume)
         {
-            if (reactVolume < 5 || !tile.TryGetPuddle(null, out _)) return ReagentUnit.Zero;
+            if (reactVolume < 5 || !tile.TryGetPuddle(null, out _)) return FixedPoint2.Zero;
 
-            return tile.SpillAt(new Solution(reagent.ID, reactVolume), "PuddleSmear", true, false) != null ? reactVolume : ReagentUnit.Zero;
+            return tile.SpillAt(new Solution(reagent.ID, reactVolume), "PuddleSmear", true, false) != null ? reactVolume : FixedPoint2.Zero;
         }
     }
 }

Content.Server/Chemistry/TileReactions/SpillTileReaction.cs

@@ -2,6 +2,7 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Slippery;
 using JetBrains.Annotations;
 using Robust.Shared.Map;
@@ -18,9 +19,9 @@ namespace Content.Server.Chemistry.TileReactions
         [DataField("paralyzeTime")] private float _paralyzeTime = 1;
         [DataField("overflow")] private bool _overflow;
 
-        public ReagentUnit TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume)
+        public FixedPoint2 TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume)
         {
-            if (reactVolume < 5) return ReagentUnit.Zero;
+            if (reactVolume < 5) return FixedPoint2.Zero;
 
             // TODO Make this not puddle smear.
             var puddle = tile.SpillAt(new Solution(reagent.ID, reactVolume), "PuddleSmear", _overflow, false);
@@ -35,7 +36,7 @@ namespace Content.Server.Chemistry.TileReactions
                 return reactVolume;
             }
 
-            return ReagentUnit.Zero;
+            return FixedPoint2.Zero;
         }
     }
 }

Content.Server/Cleanable/CleanableComponent.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -11,8 +12,8 @@ namespace Content.Server.Cleanable
         public override string Name => "Cleanable";
 
         [DataField("cleanAmount")]
-        private ReagentUnit _cleanAmount = ReagentUnit.Zero;
+        private FixedPoint2 _cleanAmount = FixedPoint2.Zero;
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit CleanAmount => _cleanAmount;
+        public FixedPoint2 CleanAmount => _cleanAmount;
     }
 }

Content.Server/Extinguisher/FireExtinguisherComponent.cs

@@ -9,6 +9,7 @@ using Content.Shared.Interaction;
 using Content.Shared.Popups;
 using Content.Shared.Sound;
 using Content.Shared.Extinguisher;
+using Content.Shared.FixedPoint;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
@@ -63,7 +64,7 @@ namespace Content.Server.Extinguisher
                 && solutionContainerSystem.TryGetDrainableSolution(targetEntity.Uid, out var targetSolution)
                 && solutionContainerSystem.TryGetDrainableSolution(Owner.Uid, out var container))
             {
-                var transfer = ReagentUnit.Min(container.AvailableVolume, targetSolution.DrainAvailable);
+                var transfer = FixedPoint2.Min(container.AvailableVolume, targetSolution.DrainAvailable);
                 if (transfer > 0)
                 {
                     var drained = solutionContainerSystem.Drain(targetEntity.Uid, targetSolution, transfer);

Content.Server/Fluids/Components/BucketComponent.cs

@@ -3,6 +3,7 @@ using System.Threading.Tasks;
 using Content.Server.Chemistry.EntitySystems;
 using Content.Server.DoAfter;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Popups;
@@ -26,12 +27,12 @@ namespace Content.Server.Fluids.Components
 
         private List<EntityUid> _currentlyUsing = new();
 
-        public ReagentUnit MaxVolume
+        public FixedPoint2 MaxVolume
         {
             get =>
                 EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(Owner.Uid, SolutionName, out var solution)
                     ? solution.MaxVolume
-                    : ReagentUnit.Zero;
+                    : FixedPoint2.Zero;
             set
             {
                 if (EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(Owner.Uid, SolutionName, out var solution))
@@ -41,9 +42,9 @@ namespace Content.Server.Fluids.Components
             }
         }
 
-        public ReagentUnit CurrentVolume => EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(Owner.Uid, SolutionName, out var solution)
+        public FixedPoint2 CurrentVolume => EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(Owner.Uid, SolutionName, out var solution)
             ? solution.CurrentVolume
-            : ReagentUnit.Zero;
+            : FixedPoint2.Zero;
 
         [DataField("sound")]
         private SoundSpecifier _sound = new SoundPathSpecifier("/Audio/Effects/Fluids/watersplash.ogg");
@@ -93,7 +94,7 @@ namespace Content.Server.Fluids.Components
 
             // Top up mops solution given it needs it to annihilate puddles I guess
 
-            var transferAmount = ReagentUnit.Min(mopComponent.MaxVolume - mopComponent.CurrentVolume, CurrentVolume);
+            var transferAmount = FixedPoint2.Min(mopComponent.MaxVolume - mopComponent.CurrentVolume, CurrentVolume);
             if (transferAmount == 0)
             {
                 return false;

Content.Server/Fluids/Components/EvaporationComponent.cs

@@ -1,5 +1,6 @@
 using Content.Server.Fluids.EntitySystems;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Analyzers;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -13,7 +14,7 @@ namespace Content.Server.Fluids.Components
         public override string Name => "Evaporation";
 
         /// <summary>
-        ///     The time that it will take this puddle to lose one reagent unit of solution, in seconds.
+        ///     The time that it will take this puddle to lose one fixed unit of solution, in seconds.
         /// </summary>
         [DataField("evaporateTime")]
         public float EvaporateTime { get; set; } = 5f;
@@ -29,14 +30,14 @@ namespace Content.Server.Fluids.Components
         ///     Defaults to evaporate completely.
         /// </summary>
         [DataField("lowerLimit")]
-        public ReagentUnit LowerLimit = ReagentUnit.Zero;
+        public FixedPoint2 LowerLimit = FixedPoint2.Zero;
 
         /// <summary>
         ///     Upper limit below which puddle won't evaporate. Useful when wanting to make sure large puddle will
         ///     remain forever. Defaults to <see cref="PuddleComponent.DefaultOverflowVolume"/>.
         /// </summary>
         [DataField("upperLimit")]
-        public ReagentUnit UpperLimit = PuddleComponent.DefaultOverflowVolume;
+        public FixedPoint2 UpperLimit = PuddleComponent.DefaultOverflowVolume;
 
         /// <summary>
         ///     The time accumulated since the start.

Content.Server/Fluids/Components/MopComponent.cs

@@ -4,6 +4,7 @@ using Content.Server.DoAfter;
 using Content.Server.Fluids.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Popups;
@@ -40,9 +41,9 @@ namespace Content.Server.Fluids.Components
             }
         }
 
-        public ReagentUnit MaxVolume
+        public FixedPoint2 MaxVolume
         {
-            get => MopSolution?.MaxVolume ?? ReagentUnit.Zero;
+            get => MopSolution?.MaxVolume ?? FixedPoint2.Zero;
             set
             {
                 var solution = MopSolution;
@@ -53,14 +54,14 @@ namespace Content.Server.Fluids.Components
             }
         }
 
-        public ReagentUnit CurrentVolume => MopSolution?.CurrentVolume ?? ReagentUnit.Zero;
+        public FixedPoint2 CurrentVolume => MopSolution?.CurrentVolume ?? FixedPoint2.Zero;
 
         // Currently there's a separate amount for pickup and dropoff so
         // Picking up a puddle requires multiple clicks
         // Dumping in a bucket requires 1 click
         // Long-term you'd probably use a cooldown and start the pickup once we have some form of global cooldown
         [DataField("pickup_amount")]
-        public ReagentUnit PickupAmount { get; } = ReagentUnit.New(5);
+        public FixedPoint2 PickupAmount { get; } = FixedPoint2.New(5);
 
         [DataField("pickup_sound")]
         private SoundSpecifier _pickupSound = new SoundPathSpecifier("/Audio/Effects/Fluids/slosh.ogg");
@@ -136,7 +137,7 @@ namespace Content.Server.Fluids.Components
                 return false;
 
             // Annihilate the puddle
-            var transferAmount = ReagentUnit.Min(ReagentUnit.New(5), puddleComponent.CurrentVolume, CurrentVolume);
+            var transferAmount = FixedPoint2.Min(FixedPoint2.New(5), puddleComponent.CurrentVolume, CurrentVolume);
             var puddleCleaned = puddleComponent.CurrentVolume - transferAmount <= 0;
 
             var puddleSystem = EntitySystem.Get<PuddleSystem>();
@@ -146,7 +147,7 @@ namespace Content.Server.Fluids.Components
                 if (puddleSystem.EmptyHolder(puddleComponent.Owner.Uid, puddleComponent)) //The puddle doesn't actually *have* reagents, for example vomit because there's no "vomit" reagent.
                 {
                     puddleComponent.Owner.Delete();
-                    transferAmount = ReagentUnit.Min(ReagentUnit.New(5), CurrentVolume);
+                    transferAmount = FixedPoint2.Min(FixedPoint2.New(5), CurrentVolume);
                     puddleCleaned = true;
                 }
                 else

Content.Server/Fluids/Components/PuddleComponent.cs

@@ -1,5 +1,6 @@
 using Content.Server.Fluids.EntitySystems;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Sound;
 using Robust.Shared.Analyzers;
 using Robust.Shared.GameObjects;
@@ -16,8 +17,8 @@ namespace Content.Server.Fluids.Components
     public sealed class PuddleComponent : Component
     {
         public const string DefaultSolutionName = "puddle";
-        private static readonly ReagentUnit DefaultSlipThreshold = ReagentUnit.New(3);
-        public static readonly ReagentUnit DefaultOverflowVolume = ReagentUnit.New(20);
+        private static readonly FixedPoint2 DefaultSlipThreshold = FixedPoint2.New(3);
+        public static readonly FixedPoint2 DefaultOverflowVolume = FixedPoint2.New(20);
 
         public override string Name => "Puddle";
 
@@ -35,7 +36,7 @@ namespace Content.Server.Fluids.Components
         // to check for low volumes for evaporation or whatever
 
 
-        [DataField("slipThreshold")] public ReagentUnit SlipThreshold = DefaultSlipThreshold;
+        [DataField("slipThreshold")] public FixedPoint2 SlipThreshold = DefaultSlipThreshold;
 
         [DataField("spillSound")]
         public SoundSpecifier SpillSound = new SoundPathSpecifier("/Audio/Effects/Fluids/splat.ogg");
@@ -46,12 +47,12 @@ namespace Content.Server.Fluids.Components
         public bool Overflown;
 
         [ViewVariables(VVAccess.ReadOnly)]
-        public ReagentUnit CurrentVolume => EntitySystem.Get<PuddleSystem>().CurrentVolume(Owner.Uid);
+        public FixedPoint2 CurrentVolume => EntitySystem.Get<PuddleSystem>().CurrentVolume(Owner.Uid);
 
         [ViewVariables] [DataField("overflowVolume")]
-        public ReagentUnit OverflowVolume = DefaultOverflowVolume;
+        public FixedPoint2 OverflowVolume = DefaultOverflowVolume;
 
-        public ReagentUnit OverflowLeft => CurrentVolume - OverflowVolume;
+        public FixedPoint2 OverflowLeft => CurrentVolume - OverflowVolume;
 
         [DataField("solution")] public string SolutionName { get; set; } = DefaultSolutionName;
     }

Content.Server/Fluids/Components/SpillExtensions.cs

@@ -5,6 +5,7 @@ using Content.Server.Coordinates.Helpers;
 using Content.Server.Fluids.EntitySystems;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -132,7 +133,7 @@ namespace Content.Server.Fluids.Components
                     .TryGetRefillableSolution(spillEntity.Uid, out var solutionContainerComponent))
                 {
                     EntitySystem.Get<SolutionContainerSystem>().Refill(spillEntity.Uid, solutionContainerComponent,
-                        solution.SplitSolution(ReagentUnit.Min(
+                        solution.SplitSolution(FixedPoint2.Min(
                             solutionContainerComponent.AvailableVolume,
                             solutionContainerComponent.MaxSpillRefill))
                     );

Content.Server/Fluids/Components/SprayComponent.cs

@@ -6,6 +6,7 @@ using Content.Shared.ActionBlocker;
 using Content.Shared.Audio;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Cooldown;
+using Content.Shared.FixedPoint;
 using Content.Shared.Fluids;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
@@ -34,7 +35,7 @@ namespace Content.Server.Fluids.Components
         [Dependency] private readonly IGameTiming _gameTiming = default!;
 
         [DataField("transferAmount")]
-        private ReagentUnit _transferAmount = ReagentUnit.New(10);
+        private FixedPoint2 _transferAmount = FixedPoint2.New(10);
         [DataField("sprayVelocity")]
         private float _sprayVelocity = 1.5f;
         [DataField("sprayAliveTime")]
@@ -56,7 +57,7 @@ namespace Content.Server.Fluids.Components
         ///     The amount of solution to be sprayer from this solution when using it
         /// </summary>
         [ViewVariables]
-        public ReagentUnit TransferAmount
+        public FixedPoint2 TransferAmount
         {
             get => _transferAmount;
             set => _transferAmount = value;
@@ -75,11 +76,11 @@ namespace Content.Server.Fluids.Components
         [DataField("spraySound", required: true)]
         public SoundSpecifier SpraySound { get; } = default!;
 
-        public ReagentUnit CurrentVolume {
+        public FixedPoint2 CurrentVolume {
             get
             {
                 EntitySystem.Get<SolutionContainerSystem>().TryGetSolution(Owner.Uid, SolutionName, out var solution);
-                return solution?.CurrentVolume ?? ReagentUnit.Zero;
+                return solution?.CurrentVolume ?? FixedPoint2.Zero;
             }
         }
 
@@ -131,7 +132,7 @@ namespace Content.Server.Fluids.Components
 
                 var solution = EntitySystem.Get<SolutionContainerSystem>().SplitSolution(Owner.Uid, contents, _transferAmount);
 
-                if (solution.TotalVolume <= ReagentUnit.Zero)
+                if (solution.TotalVolume <= FixedPoint2.Zero)
                     break;
 
                 var vapor = entManager.SpawnEntity(_vaporPrototype, playerPos.Offset(distance < 1 ? quarter : threeQuarters));

Content.Server/Fluids/EntitySystems/EvaporationSystem.cs

@@ -1,6 +1,7 @@
 using Content.Server.Chemistry.EntitySystems;
 using Content.Server.Fluids.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -36,7 +37,7 @@ namespace Content.Server.Fluids.EntitySystems
 
 
                 _solutionContainerSystem.SplitSolution(uid, solution,
-                    ReagentUnit.Min(ReagentUnit.New(1), solution.CurrentVolume));
+                    FixedPoint2.Min(FixedPoint2.New(1), solution.CurrentVolume));
 
                 if (solution.CurrentVolume == 0)
                 {

Content.Server/Fluids/EntitySystems/PuddleSystem.cs

@@ -9,6 +9,7 @@ using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Directions;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using Content.Shared.Fluids;
 using Content.Shared.Maps;
 using Content.Shared.Physics;
@@ -46,7 +47,7 @@ namespace Content.Server.Fluids.EntitySystems
         private void OnInit(EntityUid uid, PuddleComponent component, ComponentInit args)
         {
             var solution =  _solutionContainerSystem.EnsureSolution(uid, component.SolutionName);
-            solution.MaxVolume = ReagentUnit.New(1000);
+            solution.MaxVolume = FixedPoint2.New(1000);
         }
 
         private void OnUpdate(EntityUid uid, PuddleComponent component, SolutionChangedEvent args)
@@ -74,7 +75,7 @@ namespace Content.Server.Fluids.EntitySystems
 
         private void UpdateSlip(EntityUid entityUid, PuddleComponent puddleComponent)
         {
-            if ((puddleComponent.SlipThreshold == ReagentUnit.New(-1) ||
+            if ((puddleComponent.SlipThreshold == FixedPoint2.New(-1) ||
                  puddleComponent.CurrentVolume < puddleComponent.SlipThreshold) &&
                 EntityManager.TryGetComponent(entityUid, out SlipperyComponent? oldSlippery))
             {
@@ -95,7 +96,7 @@ namespace Content.Server.Fluids.EntitySystems
             if (!_solutionContainerSystem.TryGetDrainableSolution(args.Target.Uid, out var solution))
                 return;
 
-            if (solution.DrainAvailable == ReagentUnit.Zero)
+            if (solution.DrainAvailable == FixedPoint2.Zero)
                 return;
 
             Verb verb = new();
@@ -147,15 +148,15 @@ namespace Content.Server.Fluids.EntitySystems
                    || solution.Contents.Count == 0;
         }
 
-        public ReagentUnit CurrentVolume(EntityUid uid, PuddleComponent? puddleComponent = null)
+        public FixedPoint2 CurrentVolume(EntityUid uid, PuddleComponent? puddleComponent = null)
         {
             if (!Resolve(uid, ref puddleComponent))
-                return ReagentUnit.Zero;
+                return FixedPoint2.Zero;
 
             return _solutionContainerSystem.TryGetSolution(puddleComponent.Owner.Uid, puddleComponent.SolutionName,
                 out var solution)
                 ? solution.CurrentVolume
-                : ReagentUnit.Zero;
+                : FixedPoint2.Zero;
         }
 
         public bool TryAddSolution(EntityUid uid, Solution solution,
@@ -210,7 +211,7 @@ namespace Content.Server.Fluids.EntitySystems
             var nextPuddles = new List<PuddleComponent>() { puddleComponent };
             var overflownPuddles = new List<PuddleComponent>();
 
-            while (puddleComponent.OverflowLeft > ReagentUnit.Zero && nextPuddles.Count > 0)
+            while (puddleComponent.OverflowLeft > FixedPoint2.Zero && nextPuddles.Count > 0)
             {
                 foreach (var next in nextPuddles.ToArray())
                 {
@@ -220,7 +221,7 @@ namespace Content.Server.Fluids.EntitySystems
                     overflownPuddles.Add(next);
 
                     var adjacentPuddles = GetAllAdjacentOverflow(next).ToArray();
-                    if (puddleComponent.OverflowLeft <= ReagentUnit.Epsilon * adjacentPuddles.Length)
+                    if (puddleComponent.OverflowLeft <= FixedPoint2.Epsilon * adjacentPuddles.Length)
                     {
                         break;
                     }
@@ -230,12 +231,12 @@ namespace Content.Server.Fluids.EntitySystems
                         continue;
                     }
 
-                    var numberOfAdjacent = ReagentUnit.New(adjacentPuddles.Length);
+                    var numberOfAdjacent = FixedPoint2.New(adjacentPuddles.Length);
                     var overflowSplit = puddleComponent.OverflowLeft / numberOfAdjacent;
                     foreach (var adjacent in adjacentPuddles)
                     {
                         var adjacentPuddle = adjacent();
-                        var quantity = ReagentUnit.Min(overflowSplit, adjacentPuddle.OverflowVolume);
+                        var quantity = FixedPoint2.Min(overflowSplit, adjacentPuddle.OverflowVolume);
                         var puddleSolution = _solutionContainerSystem.EnsureSolution(puddleComponent.Owner.Uid,
                             puddleComponent.SolutionName);
                         var spillAmount = _solutionContainerSystem.SplitSolution(puddleComponent.Owner.Uid,

Content.Server/Kitchen/Components/MicrowaveComponent.cs

@@ -15,6 +15,7 @@ using Content.Shared.Body.Components;
 using Content.Shared.Body.Part;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Kitchen;
 using Content.Shared.Kitchen.Components;
@@ -263,7 +264,7 @@ namespace Content.Server.Kitchen.Components
                 }
 
                 //Get transfer amount. May be smaller than _transferAmount if not enough room
-                var realTransferAmount = ReagentUnit.Min(attackPourable.TransferAmount, solution.AvailableVolume);
+                var realTransferAmount = FixedPoint2.Min(attackPourable.TransferAmount, solution.AvailableVolume);
                 if (realTransferAmount <= 0) //Special message if container is full
                 {
                     Owner.PopupMessage(eventArgs.User,
@@ -440,7 +441,7 @@ namespace Content.Server.Kitchen.Components
             foreach (var recipeReagent in recipe.IngredientsReagents)
             {
                 EntitySystem.Get<SolutionContainerSystem>()
-                    .TryRemoveReagent(solutionUid, solution, recipeReagent.Key, ReagentUnit.New(recipeReagent.Value));
+                    .TryRemoveReagent(solutionUid, solution, recipeReagent.Key, FixedPoint2.New(recipeReagent.Value));
             }
 
             foreach (var recipeSolid in recipe.IngredientsSolids)

Content.Server/MobState/States/NormalMobState.cs

@@ -1,6 +1,7 @@
 using Content.Server.Alert;
 using Content.Shared.Alert;
 using Content.Shared.Damage;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState;
 using Content.Shared.MobState.State;
 using Robust.Shared.GameObjects;
@@ -9,7 +10,7 @@ namespace Content.Server.MobState.States
 {
     public class NormalMobState : SharedNormalMobState
     {
-        public override void UpdateState(IEntity entity, int threshold)
+        public override void UpdateState(IEntity entity, FixedPoint2 threshold)
         {
             base.UpdateState(entity, threshold);
 

Content.Server/Nutrition/Components/DrinkComponent.cs

@@ -5,6 +5,7 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
 using Content.Server.Nutrition.EntitySystems;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Analyzers;
 
 namespace Content.Server.Nutrition.Components
@@ -28,7 +29,7 @@ namespace Content.Server.Nutrition.Components
         internal bool DefaultToOpened;
 
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit TransferAmount { get; [UsedImplicitly] private set; } = ReagentUnit.New(5);
+        public FixedPoint2 TransferAmount { get; [UsedImplicitly] private set; } = FixedPoint2.New(5);
 
         [ViewVariables(VVAccess.ReadWrite)]
         public bool Opened;

Content.Server/Nutrition/Components/FoodComponent.cs

@@ -8,6 +8,7 @@ using Content.Server.Hands.Components;
 using Content.Server.Items;
 using Content.Shared.Body.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Popups;
@@ -42,7 +43,7 @@ namespace Content.Server.Nutrition.Components
 
         [ViewVariables]
         [DataField("transferAmount")]
-        private ReagentUnit? TransferAmount { get; set; } = ReagentUnit.New(5);
+        private FixedPoint2? TransferAmount { get; set; } = FixedPoint2.New(5);
 
         [DataField("utensilsNeeded")]
         private UtensilType _utensilsNeeded = UtensilType.None;
@@ -65,7 +66,7 @@ namespace Content.Server.Nutrition.Components
 
                 return solution.CurrentVolume == 0
                     ? 0
-                    : Math.Max(1, (int) Math.Ceiling((solution.CurrentVolume / (ReagentUnit)TransferAmount).Float()));
+                    : Math.Max(1, (int) Math.Ceiling((solution.CurrentVolume / (FixedPoint2)TransferAmount).Float()));
             }
         }
 
@@ -162,7 +163,7 @@ namespace Content.Server.Nutrition.Components
                 return false;
             }
 
-            var transferAmount = TransferAmount != null ?  ReagentUnit.Min((ReagentUnit)TransferAmount, solution.CurrentVolume) : solution.CurrentVolume;
+            var transferAmount = TransferAmount != null ?  FixedPoint2.Min((FixedPoint2)TransferAmount, solution.CurrentVolume) : solution.CurrentVolume;
             var split = solutionContainerSys.SplitSolution(Owner.Uid, solution, transferAmount);
             var firstStomach = stomachs.FirstOrDefault(stomach => stomach.CanTransferSolution(split));
 

Content.Server/Nutrition/Components/SliceableFoodComponent.cs

@@ -5,6 +5,7 @@ using Content.Server.Hands.Components;
 using Content.Server.Items;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Sound;
 using Robust.Shared.Audio;
@@ -75,7 +76,7 @@ namespace Content.Server.Nutrition.Components
             // Basically, we want to:
             // 1. Split off a representative chunk
             var lostSolution = scs.SplitSolution(Owner.Uid, solution,
-                solution.CurrentVolume / ReagentUnit.New(Count));
+                solution.CurrentVolume / FixedPoint2.New(Count));
             // 2. Delete the Nutriment (it's already in the target) so we just have additives
             // It might be an idea to remove the removal of Nutriment & clear the food
             lostSolution.RemoveReagent("Nutriment", lostSolution.GetReagentQuantity("Nutriment"));

Content.Server/Nutrition/Components/SmokableComponent.cs

@@ -1,5 +1,6 @@
 using Content.Server.Nutrition.EntitySystems;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Smoking;
 using Robust.Shared.Analyzers;
 using Robust.Shared.GameObjects;
@@ -19,7 +20,7 @@ namespace Content.Server.Nutrition.Components
         ///     Solution inhale amount per second.
         /// </summary>
         [DataField("inhaleAmount")]
-        public ReagentUnit InhaleAmount { get; } = ReagentUnit.New(0.05f);
+        public FixedPoint2 InhaleAmount { get; } = FixedPoint2.New(0.05f);
 
         [DataField("state")]
         public SmokableState State { get; set; } = SmokableState.Unlit;

Content.Server/Nutrition/EntitySystems/DrinkSystem.cs

@@ -7,6 +7,7 @@ using Content.Server.Nutrition.Components;
 using Content.Shared.Body.Components;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
 using Content.Shared.Nutrition.Components;
@@ -217,7 +218,7 @@ namespace Content.Server.Nutrition.EntitySystems
             if (user != target && !user.InRangeUnobstructed(target, popup: true))
                 return false;
 
-            var transferAmount = ReagentUnit.Min(component.TransferAmount, interactions.DrainAvailable);
+            var transferAmount = FixedPoint2.Min(component.TransferAmount, interactions.DrainAvailable);
             var drain = _solutionContainerSystem.Drain(owner.Uid, interactions, transferAmount);
             var firstStomach = stomachs.FirstOrDefault(stomach => stomach.CanTransferSolution(drain));
 

Content.Server/Nutrition/EntitySystems/SmokingSystem.cs

@@ -5,6 +5,7 @@ using Content.Server.Chemistry.EntitySystems;
 using Content.Server.Nutrition.Components;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Smoking;
 using Content.Shared.Temperature;
 using Robust.Server.GameObjects;
@@ -83,12 +84,12 @@ namespace Content.Server.Nutrition.EntitySystems
 
                 var inhaledSolution = _solutionContainerSystem.SplitSolution(uid, solution, smokable.InhaleAmount * _timer);
 
-                if (solution.TotalVolume == ReagentUnit.Zero)
+                if (solution.TotalVolume == FixedPoint2.Zero)
                 {
                     RaiseLocalEvent(uid, new SmokableSolutionEmptyEvent());
                 }
 
-                if (inhaledSolution.TotalVolume == ReagentUnit.Zero)
+                if (inhaledSolution.TotalVolume == FixedPoint2.Zero)
                     continue;
 
                 // This is awful. I hate this so much.

Content.Server/Tools/Components/WelderComponent.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Sound;
 using Content.Shared.Tools.Components;
 using Robust.Shared.GameObjects;
@@ -26,13 +27,13 @@ namespace Content.Server.Tools.Components
         ///     Fuel consumption per second, while the welder is active.
         /// </summary>
         [DataField("fuelConsumption")]
-        public ReagentUnit FuelConsumption { get; } = ReagentUnit.New(0.05f);
+        public FixedPoint2 FuelConsumption { get; } = FixedPoint2.New(0.05f);
 
         /// <summary>
         ///     A fuel amount to be consumed when the welder goes from being unlit to being lit.
         /// </summary>
         [DataField("welderOnConsume")]
-        public ReagentUnit FuelLitCost { get; } = ReagentUnit.New(0.5f);
+        public FixedPoint2 FuelLitCost { get; } = FixedPoint2.New(0.5f);
 
         /// <summary>
         ///     Sound played when the welder is turned off.

Content.Server/Tools/ToolSystem.Welder.cs

@@ -8,6 +8,7 @@ using Content.Server.Tools.Components;
 using Content.Shared.Audio;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Examine;
+using Content.Shared.FixedPoint;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
 using Content.Shared.Temperature;
@@ -43,11 +44,11 @@ namespace Content.Server.Tools
             SubscribeLocalEvent<WelderComponent, ComponentGetState>(OnWelderGetState);
         }
 
-        public (ReagentUnit fuel, ReagentUnit capacity) GetWelderFuelAndCapacity(EntityUid uid, WelderComponent? welder = null, SolutionContainerManagerComponent? solutionContainer = null)
+        public (FixedPoint2 fuel, FixedPoint2 capacity) GetWelderFuelAndCapacity(EntityUid uid, WelderComponent? welder = null, SolutionContainerManagerComponent? solutionContainer = null)
         {
             if (!Resolve(uid, ref welder, ref solutionContainer)
                 || !_solutionContainerSystem.TryGetSolution(uid, welder.FuelSolution, out var fuelSolution, solutionContainer))
-                return (ReagentUnit.Zero, ReagentUnit.Zero);
+                return (FixedPoint2.Zero, FixedPoint2.Zero);
 
             return (_solutionContainerSystem.GetReagentQuantity(uid, welder.FuelReagent), fuelSolution.MaxVolume);
         }
@@ -88,7 +89,7 @@ namespace Content.Server.Tools
             var fuel = solution.GetReagentQuantity(welder.FuelReagent);
 
             // Not enough fuel to lit welder.
-            if (fuel == ReagentUnit.Zero || fuel < welder.FuelLitCost)
+            if (fuel == FixedPoint2.Zero || fuel < welder.FuelLitCost)
             {
                 if(user != null)
                     _popupSystem.PopupEntity(Loc.GetString("welder-component-no-fuel-message"), uid, Filter.Entities(user.Value));
@@ -182,7 +183,7 @@ namespace Content.Server.Tools
                 var (fuel, capacity) = GetWelderFuelAndCapacity(uid, welder);
 
                 args.PushMarkup(Loc.GetString("welder-component-on-examine-detailed-message",
-                    ("colorName", fuel < capacity / ReagentUnit.New(4f) ? "darkorange" : "orange"),
+                    ("colorName", fuel < capacity / FixedPoint2.New(4f) ? "darkorange" : "orange"),
                     ("fuelLeft", fuel),
                     ("fuelCapacity", capacity)));
             }
@@ -213,7 +214,7 @@ namespace Content.Server.Tools
                 && _solutionContainerSystem.TryGetDrainableSolution(args.Target.Uid, out var targetSolution)
                 && _solutionContainerSystem.TryGetSolution(uid, welder.FuelSolution, out var welderSolution))
             {
-                var trans = ReagentUnit.Min(welderSolution.AvailableVolume, targetSolution.DrainAvailable);
+                var trans = FixedPoint2.Min(welderSolution.AvailableVolume, targetSolution.DrainAvailable);
                 if (trans > 0)
                 {
                     var drained = _solutionContainerSystem.Drain(args.Target.Uid, targetSolution,  trans);
@@ -249,7 +250,7 @@ namespace Content.Server.Tools
 
             var (fuel, _) = GetWelderFuelAndCapacity(uid, welder);
 
-            if (ReagentUnit.New(args.Fuel) > fuel)
+            if (FixedPoint2.New(args.Fuel) > fuel)
             {
                 _popupSystem.PopupEntity(Loc.GetString("welder-component-cannot-weld-message"), uid, Filter.Entities(args.User));
                 args.Cancel();
@@ -271,7 +272,7 @@ namespace Content.Server.Tools
 
             var (fuel, _) = GetWelderFuelAndCapacity(uid, welder);
 
-            var neededFuel = ReagentUnit.New(args.Fuel);
+            var neededFuel = FixedPoint2.New(args.Fuel);
 
             if (neededFuel > fuel)
             {
@@ -320,7 +321,7 @@ namespace Content.Server.Tools
 
                 solution.RemoveReagent(welder.FuelReagent, welder.FuelConsumption * _welderTimer);
 
-                if (solution.GetReagentQuantity(welder.FuelReagent) <= ReagentUnit.Zero)
+                if (solution.GetReagentQuantity(welder.FuelReagent) <= FixedPoint2.Zero)
                     TryTurnWelderOff(tool, null, welder);
 
                 welder.Dirty();

Content.Shared/Administration/AdminAddReagentEuiState.cs

@@ -2,6 +2,7 @@ using System;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Eui;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Serialization;
 
 namespace Content.Shared.Administration
@@ -9,8 +10,8 @@ namespace Content.Shared.Administration
     [Serializable, NetSerializable]
     public sealed class AdminAddReagentEuiState : EuiStateBase
     {
-        public ReagentUnit MaxVolume;
-        public ReagentUnit CurVolume;
+        public FixedPoint2 MaxVolume;
+        public FixedPoint2 CurVolume;
     }
 
     public static class AdminAddReagentEuiMsg
@@ -25,7 +26,7 @@ namespace Content.Shared.Administration
         public sealed class DoAdd : EuiMessageBase
         {
             public bool CloseAfter;
-            public ReagentUnit Amount;
+            public FixedPoint2 Amount;
             public string ReagentId = string.Empty;
         }
     }

Content.Shared/Chemistry/ChemistrySystem.cs

@@ -1,6 +1,7 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reaction;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -21,14 +22,14 @@ namespace Content.Shared.Chemistry
             }
         }
 
-        public void ReactionEntity(IEntity entity, ReactionMethod method, string reagentId, ReagentUnit reactVolume, Solution? source)
+        public void ReactionEntity(IEntity entity, ReactionMethod method, string reagentId, FixedPoint2 reactVolume, Solution? source)
         {
             // We throw if the reagent specified doesn't exist.
             ReactionEntity(entity, method, _prototypeManager.Index<ReagentPrototype>(reagentId), reactVolume, source);
         }
 
         public void ReactionEntity(IEntity entity, ReactionMethod method, ReagentPrototype reagent,
-            ReagentUnit reactVolume, Solution? source)
+            FixedPoint2 reactVolume, Solution? source)
         {
             if (entity == null || entity.Deleted || !entity.TryGetComponent(out ReactiveComponent? reactive))
                 return;

Content.Shared/Chemistry/Components/SharedChemMasterComponent.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using Content.Shared.Chemistry.Reagent;
 using Content.Shared.Cloning;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
@@ -22,8 +23,8 @@ namespace Content.Shared.Chemistry.Components
         {
             public readonly bool HasPower;
             public readonly bool HasBeaker;
-            public readonly ReagentUnit BeakerCurrentVolume;
-            public readonly ReagentUnit BeakerMaxVolume;
+            public readonly FixedPoint2 BeakerCurrentVolume;
+            public readonly FixedPoint2 BeakerMaxVolume;
             public readonly string ContainerName;
 
             /// <summary>
@@ -38,10 +39,10 @@ namespace Content.Shared.Chemistry.Components
 
             public readonly bool BufferModeTransfer;
 
-            public readonly ReagentUnit BufferCurrentVolume;
+            public readonly FixedPoint2 BufferCurrentVolume;
 
-            public ChemMasterBoundUserInterfaceState(bool hasPower, bool hasBeaker, ReagentUnit beakerCurrentVolume, ReagentUnit beakerMaxVolume, string containerName,
-                string dispenserName, IReadOnlyList<Solution.ReagentQuantity> containerReagents, IReadOnlyList<Solution.ReagentQuantity> bufferReagents, bool bufferModeTransfer, ReagentUnit bufferCurrentVolume)
+            public ChemMasterBoundUserInterfaceState(bool hasPower, bool hasBeaker, FixedPoint2 beakerCurrentVolume, FixedPoint2 beakerMaxVolume, string containerName,
+                string dispenserName, IReadOnlyList<Solution.ReagentQuantity> containerReagents, IReadOnlyList<Solution.ReagentQuantity> bufferReagents, bool bufferModeTransfer, FixedPoint2 bufferCurrentVolume)
             {
                 HasPower = hasPower;
                 HasBeaker = hasBeaker;
@@ -63,13 +64,13 @@ namespace Content.Shared.Chemistry.Components
         public class UiActionMessage : BoundUserInterfaceMessage
         {
             public readonly UiAction action;
-            public readonly ReagentUnit amount;
+            public readonly FixedPoint2 amount;
             public readonly string id = "";
             public readonly bool isBuffer;
             public readonly int pillAmount;
             public readonly int bottleAmount;
 
-            public UiActionMessage(UiAction _action, ReagentUnit? _amount, string? _id, bool? _isBuffer, int? _pillAmount, int? _bottleAmount)
+            public UiActionMessage(UiAction _action, FixedPoint2? _amount, string? _id, bool? _isBuffer, int? _pillAmount, int? _bottleAmount)
             {
                 action = _action;
                 if (action == UiAction.ChemButton)

Content.Shared/Chemistry/Components/SharedHyposprayComponent.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
 using Robust.Shared.Serialization;
@@ -15,10 +16,10 @@ namespace Content.Shared.Chemistry.Components
         [Serializable, NetSerializable]
         protected sealed class HyposprayComponentState : ComponentState
         {
-            public ReagentUnit CurVolume { get; }
-            public ReagentUnit MaxVolume { get; }
+            public FixedPoint2 CurVolume { get; }
+            public FixedPoint2 MaxVolume { get; }
 
-            public HyposprayComponentState(ReagentUnit curVolume, ReagentUnit maxVolume)
+            public HyposprayComponentState(FixedPoint2 curVolume, FixedPoint2 maxVolume)
             {
                 CurVolume = curVolume;
                 MaxVolume = maxVolume;

Content.Shared/Chemistry/Components/SharedInjectorComponent.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
 using Robust.Shared.Serialization;
@@ -20,11 +21,11 @@ namespace Content.Shared.Chemistry.Components
         [Serializable, NetSerializable]
         protected sealed class InjectorComponentState : ComponentState
         {
-            public ReagentUnit CurrentVolume { get; }
-            public ReagentUnit TotalVolume { get; }
+            public FixedPoint2 CurrentVolume { get; }
+            public FixedPoint2 TotalVolume { get; }
             public InjectorToggleMode CurrentMode { get; }
 
-            public InjectorComponentState(ReagentUnit currentVolume, ReagentUnit totalVolume, InjectorToggleMode currentMode)
+            public InjectorComponentState(FixedPoint2 currentVolume, FixedPoint2 totalVolume, InjectorToggleMode currentMode)
             {
                 CurrentVolume = currentVolume;
                 TotalVolume = totalVolume;

Content.Shared/Chemistry/Components/Solution.Managerial.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
 
@@ -18,10 +19,10 @@ namespace Content.Shared.Chemistry.Components
         ///     Volume needed to fill this container.
         /// </summary>
         [ViewVariables]
-        public ReagentUnit AvailableVolume => MaxVolume - CurrentVolume;
+        public FixedPoint2 AvailableVolume => MaxVolume - CurrentVolume;
 
-        public ReagentUnit DrawAvailable => CurrentVolume;
-        public ReagentUnit DrainAvailable => CurrentVolume;
+        public FixedPoint2 DrawAvailable => CurrentVolume;
+        public FixedPoint2 DrainAvailable => CurrentVolume;
 
         /// <summary>
         ///     Checks if a solution can fit into the container.
@@ -34,18 +35,18 @@ namespace Content.Shared.Chemistry.Components
         }
 
         [DataField("maxSpillRefill")]
-        public ReagentUnit MaxSpillRefill { get; set; }
+        public FixedPoint2 MaxSpillRefill { get; set; }
 
         /// <summary>
         /// Initially set <see cref="MaxVolume"/>. If empty will be calculated based
-        /// on sum of <see cref="Contents"/> reagent units.
+        /// on sum of <see cref="Contents"/> fixed units.
         /// </summary>
-        [DataField("maxVol")] public ReagentUnit InitialMaxVolume; 
+        [DataField("maxVol")] public FixedPoint2 InitialMaxVolume;
 
         [ViewVariables(VVAccess.ReadWrite)]
-        public ReagentUnit MaxVolume { get; set; } = ReagentUnit.Zero;
+        public FixedPoint2 MaxVolume { get; set; } = FixedPoint2.Zero;
 
         [ViewVariables]
-        public ReagentUnit CurrentVolume => TotalVolume;
+        public FixedPoint2 CurrentVolume => TotalVolume;
     }
 }

Content.Shared/Chemistry/Components/Solution.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Maths;
@@ -32,7 +33,7 @@ namespace Content.Shared.Chemistry.Components
         ///     The calculated total volume of all reagents in the solution (ex. Total volume of liquid in beaker).
         /// </summary>
         [ViewVariables]
-        public ReagentUnit TotalVolume { get; set; }
+        public FixedPoint2 TotalVolume { get; set; }
 
         public Color Color => GetColor();
 
@@ -46,14 +47,14 @@ namespace Content.Shared.Chemistry.Components
         /// </summary>
         /// <param name="reagentId">The prototype ID of the reagent to add.</param>
         /// <param name="quantity">The quantity in milli-units.</param>
-        public Solution(string reagentId, ReagentUnit quantity)
+        public Solution(string reagentId, FixedPoint2 quantity)
         {
             AddReagent(reagentId, quantity);
         }
 
         void ISerializationHooks.AfterDeserialization()
         {
-            TotalVolume = ReagentUnit.Zero;
+            TotalVolume = FixedPoint2.Zero;
             Contents.ForEach(reagent => TotalVolume += reagent.Quantity);
         }
 
@@ -62,7 +63,7 @@ namespace Content.Shared.Chemistry.Components
             return ContainsReagent(reagentId, out _);
         }
 
-        public bool ContainsReagent(string reagentId, out ReagentUnit quantity)
+        public bool ContainsReagent(string reagentId, out FixedPoint2 quantity)
         {
             foreach (var reagent in Contents)
             {
@@ -73,7 +74,7 @@ namespace Content.Shared.Chemistry.Components
                 }
             }
 
-            quantity = ReagentUnit.New(0);
+            quantity = FixedPoint2.New(0);
             return false;
         }
 
@@ -93,7 +94,7 @@ namespace Content.Shared.Chemistry.Components
         /// </summary>
         /// <param name="reagentId">The prototype ID of the reagent to add.</param>
         /// <param name="quantity">The quantity in milli-units.</param>
-        public void AddReagent(string reagentId, ReagentUnit quantity)
+        public void AddReagent(string reagentId, FixedPoint2 quantity)
         {
             if (quantity <= 0)
                 return;
@@ -139,7 +140,7 @@ namespace Content.Shared.Chemistry.Components
         /// </summary>
         /// <param name="reagentId">The prototype ID of the reagent to add.</param>
         /// <returns>The quantity in milli-units.</returns>
-        public ReagentUnit GetReagentQuantity(string reagentId)
+        public FixedPoint2 GetReagentQuantity(string reagentId)
         {
             for (var i = 0; i < Contents.Count; i++)
             {
@@ -147,10 +148,10 @@ namespace Content.Shared.Chemistry.Components
                     return Contents[i].Quantity;
             }
 
-            return ReagentUnit.New(0);
+            return FixedPoint2.New(0);
         }
 
-        public void RemoveReagent(string reagentId, ReagentUnit quantity)
+        public void RemoveReagent(string reagentId, FixedPoint2 quantity)
         {
             if(quantity <= 0)
                 return;
@@ -183,7 +184,7 @@ namespace Content.Shared.Chemistry.Components
         /// Remove the specified quantity from this solution.
         /// </summary>
         /// <param name="quantity">The quantity of this solution to remove</param>
-        public void RemoveSolution(ReagentUnit quantity)
+        public void RemoveSolution(FixedPoint2 quantity)
         {
             if(quantity <= 0)
                 return;
@@ -214,10 +215,10 @@ namespace Content.Shared.Chemistry.Components
         public void RemoveAllSolution()
         {
             Contents.Clear();
-            TotalVolume = ReagentUnit.New(0);
+            TotalVolume = FixedPoint2.New(0);
         }
 
-        public Solution SplitSolution(ReagentUnit quantity)
+        public Solution SplitSolution(FixedPoint2 quantity)
         {
             if (quantity <= 0)
                 return new Solution();
@@ -232,7 +233,7 @@ namespace Content.Shared.Chemistry.Components
             }
 
             newSolution = new Solution();
-            var newTotalVolume = ReagentUnit.New(0);
+            var newTotalVolume = FixedPoint2.New(0);
             var remainingVolume = TotalVolume;
 
             for (var i = 0; i < Contents.Count; i++)
@@ -291,7 +292,7 @@ namespace Content.Shared.Chemistry.Components
             }
 
             Color mixColor = default;
-            var runningTotalQuantity = ReagentUnit.New(0);
+            var runningTotalQuantity = FixedPoint2.New(0);
             var protoManager = IoCManager.Resolve<IPrototypeManager>();
 
             foreach (var reagent in Contents)
@@ -317,7 +318,7 @@ namespace Content.Shared.Chemistry.Components
 
         public Solution Clone()
         {
-            var volume = ReagentUnit.New(0);
+            var volume = FixedPoint2.New(0);
             var newSolution = new Solution();
 
             for (var i = 0; i < Contents.Count; i++)
@@ -348,9 +349,9 @@ namespace Content.Shared.Chemistry.Components
             [DataField("ReagentId", customTypeSerializer:typeof(PrototypeIdSerializer<ReagentPrototype>))]
             public readonly string ReagentId;
             [DataField("Quantity")]
-            public readonly ReagentUnit Quantity;
+            public readonly FixedPoint2 Quantity;
 
-            public ReagentQuantity(string reagentId, ReagentUnit quantity)
+            public ReagentQuantity(string reagentId, FixedPoint2 quantity)
             {
                 ReagentId = reagentId;
                 Quantity = quantity;
@@ -364,7 +365,7 @@ namespace Content.Shared.Chemistry.Components
 
             public int CompareTo(ReagentQuantity other) { return Quantity.Float().CompareTo(other.Quantity.Float()); }
 
-            public void Deconstruct(out string reagentId, out ReagentUnit quantity)
+            public void Deconstruct(out string reagentId, out FixedPoint2 quantity)
             {
                 reagentId = ReagentId;
                 quantity = Quantity;

Content.Shared/Chemistry/Dispenser/SharedReagentDispenserComponent.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
@@ -26,8 +27,8 @@ namespace Content.Shared.Chemistry.Dispenser
         {
             public readonly bool HasPower;
             public readonly bool HasBeaker;
-            public readonly ReagentUnit BeakerCurrentVolume;
-            public readonly ReagentUnit BeakerMaxVolume;
+            public readonly FixedPoint2 BeakerCurrentVolume;
+            public readonly FixedPoint2 BeakerMaxVolume;
             public readonly string ContainerName;
             /// <summary>
             /// A list of the reagents which this dispenser can dispense.
@@ -38,10 +39,10 @@ namespace Content.Shared.Chemistry.Dispenser
             /// </summary>
             public readonly List<Components.Solution.ReagentQuantity>? ContainerReagents;
             public readonly string DispenserName;
-            public readonly ReagentUnit SelectedDispenseAmount;
+            public readonly FixedPoint2 SelectedDispenseAmount;
 
-            public ReagentDispenserBoundUserInterfaceState(bool hasPower, bool hasBeaker, ReagentUnit beakerCurrentVolume, ReagentUnit beakerMaxVolume, string containerName,
-                List<ReagentDispenserInventoryEntry> inventory, string dispenserName, List<Components.Solution.ReagentQuantity>? containerReagents, ReagentUnit selectedDispenseAmount)
+            public ReagentDispenserBoundUserInterfaceState(bool hasPower, bool hasBeaker, FixedPoint2 beakerCurrentVolume, FixedPoint2 beakerMaxVolume, string containerName,
+                List<ReagentDispenserInventoryEntry> inventory, string dispenserName, List<Components.Solution.ReagentQuantity>? containerReagents, FixedPoint2 selectedDispenseAmount)
             {
                 HasPower = hasPower;
                 HasBeaker = hasBeaker;

Content.Shared/Chemistry/Reaction/ITileReaction.cs

@@ -1,10 +1,11 @@
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.Map;
 
 namespace Content.Shared.Chemistry.Reaction
 {
     public interface ITileReaction
     {
-        ReagentUnit TileReact(TileRef tile, ReagentPrototype reagent, ReagentUnit reactVolume);
+        FixedPoint2 TileReact(TileRef tile, ReagentPrototype reagent, FixedPoint2 reactVolume);
     }
 }

Content.Shared/Chemistry/Reaction/ReactionPrototype.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Content.Shared.Sound;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.Manager.Attributes;
@@ -14,7 +15,7 @@ namespace Content.Shared.Chemistry.Reaction
     public class ReactionPrototype : IPrototype
     {
         [DataField("reactants")] private Dictionary<string, ReactantPrototype> _reactants = new();
-        [DataField("products")] private Dictionary<string, ReagentUnit> _products = new();
+        [DataField("products")] private Dictionary<string, FixedPoint2> _products = new();
         [DataField("effects", serverOnly: true)] private List<IReactionEffect> _effects = new();
 
         [ViewVariables]
@@ -31,7 +32,7 @@ namespace Content.Shared.Chemistry.Reaction
         /// <summary>
         /// Reagents created when the reaction occurs.
         /// </summary>
-        public IReadOnlyDictionary<string, ReagentUnit> Products => _products;
+        public IReadOnlyDictionary<string, FixedPoint2> Products => _products;
         /// <summary>
         /// Effects to be triggered when the reaction occurs.
         /// </summary>
@@ -48,14 +49,14 @@ namespace Content.Shared.Chemistry.Reaction
     public class ReactantPrototype
     {
         [DataField("amount")]
-        private ReagentUnit _amount = ReagentUnit.New(1);
+        private FixedPoint2 _amount = FixedPoint2.New(1);
         [DataField("catalyst")]
         private bool _catalyst;
 
         /// <summary>
         /// Minimum amount of the reactant needed for the reaction to occur.
         /// </summary>
-        public ReagentUnit Amount => _amount;
+        public FixedPoint2 Amount => _amount;
         /// <summary>
         /// Whether or not the reactant is a catalyst. Catalysts aren't removed when a reaction occurs.
         /// </summary>

Content.Shared/Chemistry/Reaction/SharedChemicalReactionSystem.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
@@ -29,9 +30,9 @@ namespace Content.Shared.Chemistry.Reaction
         /// <param name="reaction">The reaction to check.</param>
         /// <param name="lowestUnitReactions">How many times this reaction can occur.</param>
         /// <returns></returns>
-        private static bool CanReact(Solution solution, ReactionPrototype reaction, out ReagentUnit lowestUnitReactions)
+        private static bool CanReact(Solution solution, ReactionPrototype reaction, out FixedPoint2 lowestUnitReactions)
         {
-            lowestUnitReactions = ReagentUnit.MaxValue;
+            lowestUnitReactions = FixedPoint2.MaxValue;
 
             foreach (var reactantData in reaction.Reactants)
             {
@@ -55,7 +56,7 @@ namespace Content.Shared.Chemistry.Reaction
         ///     Perform a reaction on a solution. This assumes all reaction criteria are met.
         ///     Removes the reactants from the solution, then returns a solution with all products.
         /// </summary>
-        private Solution PerformReaction(Solution solution, IEntity owner, ReactionPrototype reaction, ReagentUnit unitReactions)
+        private Solution PerformReaction(Solution solution, IEntity owner, ReactionPrototype reaction, FixedPoint2 unitReactions)
         {
             //Remove reactants
             foreach (var reactant in reaction.Reactants)
@@ -80,7 +81,7 @@ namespace Content.Shared.Chemistry.Reaction
             return products;
         }
 
-        protected virtual void OnReaction(Solution solution, ReactionPrototype reaction, IEntity owner, ReagentUnit unitReactions)
+        protected virtual void OnReaction(Solution solution, ReactionPrototype reaction, IEntity owner, FixedPoint2 unitReactions)
         {
             foreach (var effect in reaction.Effects)
             {
@@ -130,7 +131,7 @@ namespace Content.Shared.Chemistry.Reaction
         ///     Continually react a solution until no more reactions occur, with a volume constraint.
         ///     If a reaction's products would exceed the max volume, some product is deleted.
         /// </summary>
-        public void FullyReactSolution(Solution solution, IEntity owner, ReagentUnit maxVolume)
+        public void FullyReactSolution(Solution solution, IEntity owner, FixedPoint2 maxVolume)
         {
             for (var i = 0; i < MaxReactionIterations; i++)
             {

Content.Shared/Chemistry/Reagent/ReagentEntityReaction.cs

@@ -1,4 +1,5 @@
 using System;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -27,7 +28,7 @@ namespace Content.Shared.Chemistry.Reagent
         [DataField("ingestion")]
         public bool Ingestion { get; } = false;
 
-        public void React(ReactionMethod method, IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Components.Solution? source)
+        public void React(ReactionMethod method, IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Components.Solution? source)
         {
             switch (method)
             {
@@ -50,6 +51,6 @@ namespace Content.Shared.Chemistry.Reagent
             React(entity, reagent, volume, source);
         }
 
-        protected abstract void React(IEntity entity, ReagentPrototype reagent, ReagentUnit volume, Components.Solution? source);
+        protected abstract void React(IEntity entity, ReagentPrototype reagent, FixedPoint2 volume, Components.Solution? source);
     }
 }

Content.Shared/Chemistry/Reagent/ReagentPrototype.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using Content.Shared.Botany;
 using Content.Shared.Chemistry.Reaction;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Maths;
@@ -77,9 +78,9 @@ namespace Content.Shared.Chemistry.Reagent
             return SubstanceColor;
         }
 
-        public ReagentUnit ReactionTile(TileRef tile, ReagentUnit reactVolume)
+        public FixedPoint2 ReactionTile(TileRef tile, FixedPoint2 reactVolume)
         {
-            var removed = ReagentUnit.Zero;
+            var removed = FixedPoint2.Zero;
 
             if (tile.Tile.IsEmpty)
                 return removed;

Content.Shared/Chemistry/SharedTransferAmount.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
@@ -8,10 +9,10 @@ namespace Content.Shared.Chemistry
     [Serializable, NetSerializable]
     public class TransferAmountBoundInterfaceState : BoundUserInterfaceState
     {
-        public ReagentUnit Max;
-        public ReagentUnit Min;
+        public FixedPoint2 Max;
+        public FixedPoint2 Min;
 
-        public TransferAmountBoundInterfaceState(ReagentUnit max, ReagentUnit min)
+        public TransferAmountBoundInterfaceState(FixedPoint2 max, FixedPoint2 min)
         {
             Max = max;
             Min = min;
@@ -21,9 +22,9 @@ namespace Content.Shared.Chemistry
     [Serializable, NetSerializable]
     public class TransferAmountSetValueMessage : BoundUserInterfaceMessage
     {
-        public ReagentUnit Value;
+        public FixedPoint2 Value;
 
-        public TransferAmountSetValueMessage(ReagentUnit value)
+        public TransferAmountSetValueMessage(FixedPoint2 value)
         {
             Value = value;
         }

Content.Shared/Damage/DamageSpecifier.cs

@@ -9,12 +9,10 @@ using Robust.Shared.ViewVariables;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Content.Shared.FixedPoint;
 
 namespace Content.Shared.Damage
 {
-    // TODO DAMAGE UNITS Move this whole class away from, using integers. Also get rid of a lot of the rounding. Just
-    // use DamageUnit math operators.
-
     /// <summary>
     ///     This class represents a collection of damage types and damage values.
     /// </summary>
@@ -25,17 +23,17 @@ namespace Content.Shared.Damage
     [DataDefinition]
     public class DamageSpecifier
     {
-        [DataField("types", customTypeSerializer: typeof(PrototypeIdDictionarySerializer<int, DamageTypePrototype>))]
-        private readonly Dictionary<string,int>? _damageTypeDictionary;
+        [DataField("types", customTypeSerializer: typeof(PrototypeIdDictionarySerializer<FixedPoint2, DamageTypePrototype>))]
+        private readonly Dictionary<string,FixedPoint2>? _damageTypeDictionary;
 
-        [DataField("groups", customTypeSerializer: typeof(PrototypeIdDictionarySerializer<int, DamageGroupPrototype>))]
-        private readonly Dictionary<string, int>? _damageGroupDictionary;
+        [DataField("groups", customTypeSerializer: typeof(PrototypeIdDictionarySerializer<FixedPoint2, DamageGroupPrototype>))]
+        private readonly Dictionary<string, FixedPoint2>? _damageGroupDictionary;
 
         /// <summary>
         ///     Main DamageSpecifier dictionary. Most DamageSpecifier functions exist to somehow modifying this.
         /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
-        public Dictionary<string, int> DamageDict
+        public Dictionary<string, FixedPoint2> DamageDict
         {
             get
             {
@@ -45,7 +43,7 @@ namespace Content.Shared.Damage
             }
             set => _damageDict = value;
         }
-        private Dictionary<string, int>? _damageDict;
+        private Dictionary<string, FixedPoint2>? _damageDict;
 
         /// <summary>
         ///     Sum of the damage values.
@@ -55,7 +53,7 @@ namespace Content.Shared.Damage
         ///     in another. For this purpose, you should instead use <see cref="TrimZeros()"/> and then check the <see
         ///     cref="Empty"/> property.
         /// </remarks>
-        public int Total => DamageDict.Values.Sum();
+        public FixedPoint2 Total => DamageDict.Values.Sum();
 
         /// <summary>
         ///     Whether this damage specifier has any entries.
@@ -79,7 +77,7 @@ namespace Content.Shared.Damage
         /// <summary>
         ///     Constructor that takes a single damage type prototype and a damage value.
         /// </summary>
-        public DamageSpecifier(DamageTypePrototype type, int value)
+        public DamageSpecifier(DamageTypePrototype type, FixedPoint2 value)
         {
             DamageDict = new() { { type.ID, value } };
         }
@@ -87,14 +85,14 @@ namespace Content.Shared.Damage
         /// <summary>
         ///     Constructor that takes a single damage group prototype and a damage value. The value is divided between members of the damage group.
         /// </summary>
-        public DamageSpecifier(DamageGroupPrototype group, int value)
+        public DamageSpecifier(DamageGroupPrototype group, FixedPoint2 value)
         {
             _damageGroupDictionary = new() { { group.ID, value } };
         }
         #endregion constructors
 
         /// <summary>
-        ///     Combines the damage group and type datafield dictionaries into a single damage dictionary.
+        ///     Combines the damage group and type datafield dictionaries FixedPoint2o a single damage dictionary.
         /// </summary>
         public void DeserializeDamage()
         {
@@ -128,7 +126,7 @@ namespace Content.Shared.Damage
                 var remainingDamage = entry.Value;
                 foreach (var damageType in group.DamageTypes)
                 {
-                    var damage = remainingDamage / remainingTypes;
+                    var damage = remainingDamage / FixedPoint2.New(remainingTypes);
                     if (!_damageDict.TryAdd(damageType, damage))
                     {
                         // Key already exists, add values
@@ -149,7 +147,7 @@ namespace Content.Shared.Damage
         public static DamageSpecifier ApplyModifierSet(DamageSpecifier damageSpec, DamageModifierSet modifierSet)
         {
             // Make a copy of the given data. Don't modify the one passed to this function. I did this before, and weapons became
-            // duller as you hit walls. Neat, but not intended. And confusing, when you realize your fists don't work no
+            // duller as you hit walls. Neat, but not FixedPoint2ended. And confusing, when you realize your fists don't work no
             // more cause they're just bloody stumps.
             DamageSpecifier newDamage = new(damageSpec);
 
@@ -157,7 +155,7 @@ namespace Content.Shared.Damage
             {
                 if (entry.Value <= 0) continue;
 
-                float newValue = entry.Value;
+                float newValue = entry.Value.Float();
 
                 if (modifierSet.FlatReduction.TryGetValue(entry.Key, out var reduction))
                 {
@@ -165,7 +163,7 @@ namespace Content.Shared.Damage
                     if (newValue <= 0)
                     {
                         // flat reductions cannot heal you
-                        newDamage.DamageDict[entry.Key] = 0;
+                        newDamage.DamageDict[entry.Key] = FixedPoint2.Zero;
                         continue;
                     }
                 }
@@ -173,10 +171,10 @@ namespace Content.Shared.Damage
                 if (modifierSet.Coefficients.TryGetValue(entry.Key, out var coefficient))
                 {
                     // negative coefficients **can** heal you.
-                    newValue = MathF.Round(newValue*coefficient, MidpointRounding.AwayFromZero);
+                    newValue = newValue * coefficient;
                 }
 
-                newDamage.DamageDict[entry.Key] = (int) newValue;
+                newDamage.DamageDict[entry.Key] = FixedPoint2.New(newValue);
             }
 
             newDamage.TrimZeros();
@@ -218,7 +216,7 @@ namespace Content.Shared.Damage
         /// <summary>
         ///     Clamps each damage value to be within the given range.
         /// </summary>
-        public void Clamp(int minValue = 0, int maxValue = 0)
+        public void Clamp(FixedPoint2 minValue, FixedPoint2 maxValue)
         {
             DebugTools.Assert(minValue < maxValue);
             ClampMax(maxValue);
@@ -231,7 +229,7 @@ namespace Content.Shared.Damage
         /// <remarks>
         ///     Note that this only acts on damage types present in the dictionary. It will not add new damage types.
         /// </remarks>
-        public void ClampMin(int minValue = 0)
+        public void ClampMin(FixedPoint2 minValue)
         {
             foreach (var (key, value) in DamageDict)
             {
@@ -246,7 +244,7 @@ namespace Content.Shared.Damage
         ///     Sets all damage values to be at most some number. Note that if a damage type is not present in the
         ///     dictionary, these will not be added.
         /// </summary>
-        public void ClampMax(int maxValue = 0)
+        public void ClampMax(FixedPoint2 maxValue)
         {
             foreach (var (key, value) in DamageDict)
             {
@@ -282,10 +280,10 @@ namespace Content.Shared.Damage
         /// <remarks>
         ///     If no members of the group are included in this specifier, returns false.
         /// </remarks>
-        public bool TryGetDamageInGroup(DamageGroupPrototype group, out int total)
+        public bool TryGetDamageInGroup(DamageGroupPrototype group, out FixedPoint2 total)
         {
             bool containsMemeber = false;
-            total = 0;
+            total = FixedPoint2.Zero;
 
             foreach (var type in group.DamageTypes)
             {
@@ -307,9 +305,9 @@ namespace Content.Shared.Damage
         ///     total of each group. If no members of a group are present in this <see cref="DamageSpecifier"/>, the
         ///     group is not included in the resulting dictionary.
         /// </remarks>
-        public Dictionary<string, int> GetDamagePerGroup()
+        public Dictionary<string, FixedPoint2> GetDamagePerGroup()
         {
-            var damageGroupDict = new Dictionary<string, int>();
+            var damageGroupDict = new Dictionary<string, FixedPoint2>();
             foreach (var group in IoCManager.Resolve<IPrototypeManager>().EnumeratePrototypes<DamageGroupPrototype>())
             {
                 if (TryGetDamageInGroup(group, out var value))
@@ -321,7 +319,7 @@ namespace Content.Shared.Damage
         }
 
         #region Operators
-        public static DamageSpecifier operator *(DamageSpecifier damageSpec, int factor)
+        public static DamageSpecifier operator *(DamageSpecifier damageSpec, FixedPoint2 factor)
         {
             DamageSpecifier newDamage = new();
             foreach (var entry in damageSpec.DamageDict)
@@ -336,17 +334,17 @@ namespace Content.Shared.Damage
             DamageSpecifier newDamage = new();
             foreach (var entry in damageSpec.DamageDict)
             {
-                newDamage.DamageDict.Add(entry.Key, (int) MathF.Round(entry.Value * factor, MidpointRounding.AwayFromZero));
+                newDamage.DamageDict.Add(entry.Key, entry.Value * factor);
             }
             return newDamage;
         }
 
-        public static DamageSpecifier operator /(DamageSpecifier damageSpec, int factor)
+        public static DamageSpecifier operator /(DamageSpecifier damageSpec, FixedPoint2 factor)
         {
             DamageSpecifier newDamage = new();
             foreach (var entry in damageSpec.DamageDict)
             {
-                newDamage.DamageDict.Add(entry.Key, (int) MathF.Round(entry.Value /  (float) factor, MidpointRounding.AwayFromZero));
+                newDamage.DamageDict.Add(entry.Key, entry.Value / factor);
             }
             return newDamage;
         }
@@ -357,7 +355,7 @@ namespace Content.Shared.Damage
 
             foreach (var entry in damageSpec.DamageDict)
             {
-                newDamage.DamageDict.Add(entry.Key, (int) MathF.Round(entry.Value / factor, MidpointRounding.AwayFromZero));
+                newDamage.DamageDict.Add(entry.Key, entry.Value / factor);
             }
             return newDamage;
         }
@@ -387,7 +385,7 @@ namespace Content.Shared.Damage
 
         public static DamageSpecifier operator *(float factor, DamageSpecifier damageSpec) => damageSpec * factor;
 
-        public static DamageSpecifier operator *(int factor, DamageSpecifier damageSpec) => damageSpec * factor;
+        public static DamageSpecifier operator *(FixedPoint2 factor, DamageSpecifier damageSpec) => damageSpec * factor;
     }
     #endregion
 }

Content.Shared/Damage/DamageableComponent.cs

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using Content.Shared.Acts;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using Content.Shared.Radiation;
 using Robust.Shared.Analyzers;
 using Robust.Shared.GameObjects;
@@ -64,12 +65,12 @@ namespace Content.Shared.Damage
         ///     Groups which have no members that are supported by this component will not be present in this
         ///     dictionary.
         /// </remarks>
-        [ViewVariables] public Dictionary<string, int> DamagePerGroup = new();
+        [ViewVariables] public Dictionary<string, FixedPoint2> DamagePerGroup = new();
 
         /// <summary>
         ///     The sum of all damages in the DamageableComponent.
         /// </summary>
-        [ViewVariables] public int TotalDamage;
+        [ViewVariables] public FixedPoint2 TotalDamage;
 
         // Really these shouldn't be here. OnExplosion() and RadiationAct() should be handled elsewhere.
         [ViewVariables]
@@ -82,7 +83,7 @@ namespace Content.Shared.Damage
         // TODO RADIATION Remove this.
         void IRadiationAct.RadiationAct(float frameTime, SharedRadiationPulseComponent radiation)
         {
-            var damageValue = Math.Max((int) (frameTime * radiation.RadsPerSecond), 1);
+            var damageValue = FixedPoint2.New(MathF.Max((frameTime * radiation.RadsPerSecond), 1));
 
             // Radiation should really just be a damage group instead of a list of types.
             DamageSpecifier damage = new();
@@ -99,9 +100,9 @@ namespace Content.Shared.Damage
         {
             var damageValue = eventArgs.Severity switch
             {
-                ExplosionSeverity.Light => 20,
-                ExplosionSeverity.Heavy => 60,
-                ExplosionSeverity.Destruction => 250,
+                ExplosionSeverity.Light => FixedPoint2.New(20),
+                ExplosionSeverity.Heavy => FixedPoint2.New(60),
+                ExplosionSeverity.Destruction => FixedPoint2.New(250),
                 _ => throw new ArgumentOutOfRangeException()
             };
 
@@ -119,11 +120,11 @@ namespace Content.Shared.Damage
     [Serializable, NetSerializable]
     public class DamageableComponentState : ComponentState
     {
-        public readonly Dictionary<string, int> DamageDict;
+        public readonly Dictionary<string, FixedPoint2> DamageDict;
         public readonly string? ModifierSetId;
 
         public DamageableComponentState(
-            Dictionary<string, int> damageDict,
+            Dictionary<string, FixedPoint2> damageDict,
             string? modifierSetId)
         {
             DamageDict = damageDict;

Content.Shared/Damage/DamageableSystem.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Content.Shared.Damage.Prototypes;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
 using Robust.Shared.IoC;
@@ -33,7 +34,7 @@ namespace Content.Shared.Damage
                 // container prototype
                 foreach (var type in damageContainerPrototype.SupportedTypes)
                 {
-                    component.Damage.DamageDict.TryAdd(type, 0);
+                    component.Damage.DamageDict.TryAdd(type, FixedPoint2.Zero);
                 }
 
                 foreach (var groupID in damageContainerPrototype.SupportedGroups)
@@ -41,7 +42,7 @@ namespace Content.Shared.Damage
                     var group = _prototypeManager.Index<DamageGroupPrototype>(groupID);
                     foreach (var type in group.DamageTypes)
                     {
-                        component.Damage.DamageDict.TryAdd(type, 0);
+                        component.Damage.DamageDict.TryAdd(type, FixedPoint2.Zero);
                     }
                 }
             }
@@ -50,7 +51,7 @@ namespace Content.Shared.Damage
                 // No DamageContainerPrototype was given. So we will allow the container to support all damage types
                 foreach (var type in _prototypeManager.EnumeratePrototypes<DamageTypePrototype>())
                 {
-                    component.Damage.DamageDict.TryAdd(type.ID, 0);
+                    component.Damage.DamageDict.TryAdd(type.ID, FixedPoint2.Zero);
                 }
             }
 
@@ -143,7 +144,7 @@ namespace Content.Shared.Damage
             DamageSpecifier oldDamage = new(damageable.Damage);
 
             damageable.Damage.ExclusiveAdd(damage);
-            damageable.Damage.ClampMin(0);
+            damageable.Damage.ClampMin(FixedPoint2.Zero);
 
             var delta = damageable.Damage - oldDamage;
             delta.TrimZeros();
@@ -162,7 +163,7 @@ namespace Content.Shared.Damage
         /// <remakrs>
         ///     Does nothing If the given damage value is negative.
         /// </remakrs>
-        public void SetAllDamage(DamageableComponent component, int newValue)
+        public void SetAllDamage(DamageableComponent component, FixedPoint2 newValue)
         {
             if (newValue < 0)
             {

Content.Shared/FixedPoint/FixedPoint2.cs

@@ -1,40 +1,42 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using Robust.Shared.Serialization;
 
-namespace Content.Shared.Chemistry.Reagent
+namespace Content.Shared.FixedPoint
 {
     /// <summary>
-    ///     Represents a quantity of reagent, to a precision of 0.01.
+    ///     Represents a quantity of something, to a precision of 0.01.
     ///     To enforce this level of precision, floats are shifted by 2 decimal points, rounded, and converted to an int.
     /// </summary>
     [Serializable]
-    public struct ReagentUnit : ISelfSerialize, IComparable<ReagentUnit>, IEquatable<ReagentUnit>
+    public struct FixedPoint2 : ISelfSerialize, IComparable<FixedPoint2>, IEquatable<FixedPoint2>
     {
         private int _value;
         private static readonly int Shift = 2;
 
-        public static ReagentUnit MaxValue { get; } = new(int.MaxValue);
-        public static ReagentUnit Epsilon { get; } = new(1);
-        public static ReagentUnit Zero { get; } = new(0);
+        public static FixedPoint2 MaxValue { get; } = new(int.MaxValue);
+        public static FixedPoint2 Epsilon { get; } = new(1);
+        public static FixedPoint2 Zero { get; } = new(0);
 
         private readonly double ShiftDown()
         {
             return _value / Math.Pow(10, Shift);
         }
 
-        private ReagentUnit(int value)
+        private FixedPoint2(int value)
         {
             _value = value;
         }
 
-        public static ReagentUnit New(int value)
+        public static FixedPoint2 New(int value)
         {
             return new(value * (int) Math.Pow(10, Shift));
         }
 
-        public static ReagentUnit New(float value)
+        public static FixedPoint2 New(float value)
         {
             return new(FromFloat(value));
         }
@@ -44,12 +46,12 @@ namespace Content.Shared.Chemistry.Reagent
             return (int) MathF.Round(value * MathF.Pow(10, Shift), MidpointRounding.AwayFromZero);
         }
 
-        public static ReagentUnit New(double value)
+        public static FixedPoint2 New(double value)
         {
             return new((int) Math.Round(value * Math.Pow(10, Shift), MidpointRounding.AwayFromZero));
         }
 
-        public static ReagentUnit New(string value)
+        public static FixedPoint2 New(string value)
         {
             return New(FloatFromString(value));
         }
@@ -59,41 +61,41 @@ namespace Content.Shared.Chemistry.Reagent
             return float.Parse(value, CultureInfo.InvariantCulture);
         }
 
-        public static ReagentUnit operator +(ReagentUnit a) => a;
+        public static FixedPoint2 operator +(FixedPoint2 a) => a;
 
-        public static ReagentUnit operator -(ReagentUnit a) => new(-a._value);
+        public static FixedPoint2 operator -(FixedPoint2 a) => new(-a._value);
 
-        public static ReagentUnit operator +(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 operator +(FixedPoint2 a, FixedPoint2 b)
             => new(a._value + b._value);
 
-        public static ReagentUnit operator -(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 operator -(FixedPoint2 a, FixedPoint2 b)
             => a + -b;
 
-        public static ReagentUnit operator *(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 operator *(FixedPoint2 a, FixedPoint2 b)
         {
             var aD = a.ShiftDown();
             var bD = b.ShiftDown();
             return New(aD * bD);
         }
 
-        public static ReagentUnit operator *(ReagentUnit a, float b)
+        public static FixedPoint2 operator *(FixedPoint2 a, float b)
         {
             var aD = (float) a.ShiftDown();
             return New(aD * b);
         }
 
-        public static ReagentUnit operator *(ReagentUnit a, double b)
+        public static FixedPoint2 operator *(FixedPoint2 a, double b)
         {
             var aD = a.ShiftDown();
             return New(aD * b);
         }
 
-        public static ReagentUnit operator *(ReagentUnit a, int b)
+        public static FixedPoint2 operator *(FixedPoint2 a, int b)
         {
             return new(a._value * b);
         }
 
-        public static ReagentUnit operator /(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 operator /(FixedPoint2 a, FixedPoint2 b)
         {
             if (b._value == 0)
             {
@@ -104,62 +106,67 @@ namespace Content.Shared.Chemistry.Reagent
             return New(aD / bD);
         }
 
-        public static bool operator <=(ReagentUnit a, int b)
+        public static FixedPoint2 operator /(FixedPoint2 a, float b)
+        {
+            return a / FixedPoint2.New(b);
+        }
+
+        public static bool operator <=(FixedPoint2 a, int b)
         {
             return a <= New(b);
         }
 
-        public static bool operator >=(ReagentUnit a, int b)
+        public static bool operator >=(FixedPoint2 a, int b)
         {
             return a >= New(b);
         }
 
-        public static bool operator <(ReagentUnit a, int b)
+        public static bool operator <(FixedPoint2 a, int b)
         {
             return a < New(b);
         }
 
-        public static bool operator >(ReagentUnit a, int b)
+        public static bool operator >(FixedPoint2 a, int b)
         {
             return a > New(b);
         }
 
-        public static bool operator ==(ReagentUnit a, int b)
+        public static bool operator ==(FixedPoint2 a, int b)
         {
             return a == New(b);
         }
 
-        public static bool operator !=(ReagentUnit a, int b)
+        public static bool operator !=(FixedPoint2 a, int b)
         {
             return a != New(b);
         }
 
-        public static bool operator ==(ReagentUnit a, ReagentUnit b)
+        public static bool operator ==(FixedPoint2 a, FixedPoint2 b)
         {
             return a.Equals(b);
         }
 
-        public static bool operator !=(ReagentUnit a, ReagentUnit b)
+        public static bool operator !=(FixedPoint2 a, FixedPoint2 b)
         {
             return !a.Equals(b);
         }
 
-        public static bool operator <=(ReagentUnit a, ReagentUnit b)
+        public static bool operator <=(FixedPoint2 a, FixedPoint2 b)
         {
             return a._value <= b._value;
         }
 
-        public static bool operator >=(ReagentUnit a, ReagentUnit b)
+        public static bool operator >=(FixedPoint2 a, FixedPoint2 b)
         {
             return a._value >= b._value;
         }
 
-        public static bool operator <(ReagentUnit a, ReagentUnit b)
+        public static bool operator <(FixedPoint2 a, FixedPoint2 b)
         {
             return a._value < b._value;
         }
 
-        public static bool operator >(ReagentUnit a, ReagentUnit b)
+        public static bool operator >(FixedPoint2 a, FixedPoint2 b)
         {
             return a._value > b._value;
         }
@@ -179,22 +186,31 @@ namespace Content.Shared.Chemistry.Reagent
             return (int) ShiftDown();
         }
 
-        public static ReagentUnit Min(params ReagentUnit[] reagentUnits)
+        // Implicit operators ftw
+        public static implicit operator FixedPoint2(float n) => FixedPoint2.New(n);
+        public static implicit operator FixedPoint2(double n) => FixedPoint2.New(n);
+        public static implicit operator FixedPoint2(int n) => FixedPoint2.New(n);
+
+        public static explicit operator float(FixedPoint2 n) => n.Float();
+        public static explicit operator double(FixedPoint2 n) => n.Double();
+        public static explicit operator int(FixedPoint2 n) => n.Int();
+
+        public static FixedPoint2 Min(params FixedPoint2[] fixedPoints)
         {
-            return reagentUnits.Min();
+            return fixedPoints.Min();
         }
 
-        public static ReagentUnit Min(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 Min(FixedPoint2 a, FixedPoint2 b)
         {
             return a < b ? a : b;
         }
 
-        public static ReagentUnit Max(ReagentUnit a, ReagentUnit b)
+        public static FixedPoint2 Max(FixedPoint2 a, FixedPoint2 b)
         {
             return a > b ? a : b;
         }
 
-        public static ReagentUnit Clamp(ReagentUnit reagent, ReagentUnit min, ReagentUnit max)
+        public static FixedPoint2 Clamp(FixedPoint2 reagent, FixedPoint2 min, FixedPoint2 max)
         {
             if (min > max)
             {
@@ -206,7 +222,7 @@ namespace Content.Shared.Chemistry.Reagent
 
         public override readonly bool Equals(object? obj)
         {
-            return obj is ReagentUnit unit &&
+            return obj is FixedPoint2 unit &&
                    _value == unit._value;
         }
 
@@ -228,12 +244,12 @@ namespace Content.Shared.Chemistry.Reagent
             return ToString();
         }
 
-        public readonly bool Equals(ReagentUnit other)
+        public readonly bool Equals(FixedPoint2 other)
         {
             return _value == other._value;
         }
 
-        public readonly int CompareTo(ReagentUnit other)
+        public readonly int CompareTo(FixedPoint2 other)
         {
             if(other._value > _value)
             {
@@ -245,5 +261,21 @@ namespace Content.Shared.Chemistry.Reagent
             }
             return 0;
         }
+
+    }
+
+    public static class FixedPointEnumerableExt
+    {
+        public static FixedPoint2 Sum(this System.Collections.Generic.IEnumerable<FixedPoint2> source)
+        {
+            var acc = FixedPoint2.Zero;
+
+            foreach (var n in source)
+            {
+                acc += n;
+            }
+
+            return acc;
+        }
     }
 }

Content.Shared/MedicalScanner/SharedMedicalScannerComponent.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using Content.Shared.Body.Components;
 using Content.Shared.Damage;
 using Content.Shared.DragDrop;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
@@ -16,8 +17,8 @@ namespace Content.Shared.MedicalScanner
         public class MedicalScannerBoundUserInterfaceState : BoundUserInterfaceState
         {
             public readonly EntityUid? Entity;
-            public readonly IReadOnlyDictionary<string, int> DamagePerGroup;
-            public readonly IReadOnlyDictionary<string, int> DamagePerType;
+            public readonly IReadOnlyDictionary<string, FixedPoint2> DamagePerGroup;
+            public readonly IReadOnlyDictionary<string, FixedPoint2> DamagePerType;
             public readonly bool IsScanned;
 
             public MedicalScannerBoundUserInterfaceState(

Content.Shared/MobState/Components/MobStateComponent.cs

@@ -4,6 +4,7 @@ using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Content.Shared.Alert;
 using Content.Shared.Damage;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState.State;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
@@ -43,7 +44,7 @@ namespace Content.Shared.MobState.Components
         public IMobState? CurrentState { get; private set; }
 
         [ViewVariables]
-        public int? CurrentThreshold { get; private set; }
+        public FixedPoint2? CurrentThreshold { get; private set; }
 
         public IEnumerable<KeyValuePair<int, IMobState>> _highestToLowestStates => _lowestToHighestStates.Reverse();
 
@@ -59,7 +60,7 @@ namespace Content.Shared.MobState.Components
             else
             {
                 // Initialize with some amount of damage, defaulting to 0.
-                UpdateState(Owner.GetComponentOrNull<DamageableComponent>()?.TotalDamage ?? 0);
+                UpdateState(Owner.GetComponentOrNull<DamageableComponent>()?.TotalDamage ?? FixedPoint2.Zero);
             }
         }
 
@@ -122,7 +123,7 @@ namespace Content.Shared.MobState.Components
             return CurrentState?.IsIncapacitated() ?? false;
         }
 
-        public (IMobState state, int threshold)? GetState(int damage)
+        public (IMobState state, FixedPoint2 threshold)? GetState(FixedPoint2 damage)
         {
             foreach (var (threshold, state) in _highestToLowestStates)
             {
@@ -136,9 +137,9 @@ namespace Content.Shared.MobState.Components
         }
 
         public bool TryGetState(
-            int damage,
+            FixedPoint2 damage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             var highestState = GetState(damage);
 
@@ -153,7 +154,7 @@ namespace Content.Shared.MobState.Components
             return true;
         }
 
-        private (IMobState state, int threshold)? GetEarliestState(int minimumDamage, Predicate<IMobState> predicate)
+        private (IMobState state, FixedPoint2 threshold)? GetEarliestState(FixedPoint2 minimumDamage, Predicate<IMobState> predicate)
         {
             foreach (var (threshold, state) in _lowestToHighestStates)
             {
@@ -169,7 +170,7 @@ namespace Content.Shared.MobState.Components
             return null;
         }
 
-        private (IMobState state, int threshold)? GetPreviousState(int maximumDamage, Predicate<IMobState> predicate)
+        private (IMobState state, FixedPoint2 threshold)? GetPreviousState(FixedPoint2 maximumDamage, Predicate<IMobState> predicate)
         {
             foreach (var (threshold, state) in _highestToLowestStates)
             {
@@ -185,30 +186,30 @@ namespace Content.Shared.MobState.Components
             return null;
         }
 
-        public (IMobState state, int threshold)? GetEarliestCriticalState(int minimumDamage)
+        public (IMobState state, FixedPoint2 threshold)? GetEarliestCriticalState(FixedPoint2 minimumDamage)
         {
             return GetEarliestState(minimumDamage, s => s.IsCritical());
         }
 
-        public (IMobState state, int threshold)? GetEarliestIncapacitatedState(int minimumDamage)
+        public (IMobState state, FixedPoint2 threshold)? GetEarliestIncapacitatedState(FixedPoint2 minimumDamage)
         {
             return GetEarliestState(minimumDamage, s => s.IsIncapacitated());
         }
 
-        public (IMobState state, int threshold)? GetEarliestDeadState(int minimumDamage)
+        public (IMobState state, FixedPoint2 threshold)? GetEarliestDeadState(FixedPoint2 minimumDamage)
         {
             return GetEarliestState(minimumDamage, s => s.IsDead());
         }
 
-        public (IMobState state, int threshold)? GetPreviousCriticalState(int minimumDamage)
+        public (IMobState state, FixedPoint2 threshold)? GetPreviousCriticalState(FixedPoint2 minimumDamage)
         {
             return GetPreviousState(minimumDamage, s => s.IsCritical());
         }
 
         private bool TryGetState(
-            (IMobState state, int threshold)? tuple,
+            (IMobState state, FixedPoint2 threshold)? tuple,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             if (tuple == null)
             {
@@ -222,9 +223,9 @@ namespace Content.Shared.MobState.Components
         }
 
         public bool TryGetEarliestCriticalState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             var earliestState = GetEarliestCriticalState(minimumDamage);
 
@@ -232,9 +233,9 @@ namespace Content.Shared.MobState.Components
         }
 
         public bool TryGetEarliestIncapacitatedState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             var earliestState = GetEarliestIncapacitatedState(minimumDamage);
 
@@ -242,9 +243,9 @@ namespace Content.Shared.MobState.Components
         }
 
         public bool TryGetEarliestDeadState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             var earliestState = GetEarliestDeadState(minimumDamage);
 
@@ -252,9 +253,9 @@ namespace Content.Shared.MobState.Components
         }
 
         public bool TryGetPreviousCriticalState(
-            int maximumDamage,
+            FixedPoint2 maximumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold)
+            out FixedPoint2 threshold)
         {
             var earliestState = GetPreviousCriticalState(maximumDamage);
 
@@ -273,7 +274,7 @@ namespace Content.Shared.MobState.Components
         /// <summary>
         ///     Updates the mob state..
         /// </summary>
-        public void UpdateState(int damage)
+        public void UpdateState(FixedPoint2 damage)
         {
             if (!TryGetState(damage, out var newState, out var threshold))
             {
@@ -286,7 +287,7 @@ namespace Content.Shared.MobState.Components
         /// <summary>
         ///     Sets the mob state and marks the component as dirty.
         /// </summary>
-        private void SetMobState(IMobState? old, (IMobState state, int threshold)? current)
+        private void SetMobState(IMobState? old, (IMobState state, FixedPoint2 threshold)? current)
         {
             if (!current.HasValue)
             {
@@ -324,9 +325,9 @@ namespace Content.Shared.MobState.Components
     [Serializable, NetSerializable]
     public class MobStateComponentState : ComponentState
     {
-        public readonly int? CurrentThreshold;
+        public readonly FixedPoint2? CurrentThreshold;
 
-        public MobStateComponentState(int? currentThreshold)
+        public MobStateComponentState(FixedPoint2? currentThreshold)
         {
             CurrentThreshold = currentThreshold;
         }

Content.Shared/MobState/IMobStateComponent.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
+using Content.Shared.FixedPoint;
 using Content.Shared.MobState.State;
 using Robust.Shared.GameObjects;
 
@@ -16,34 +17,34 @@ namespace Content.Shared.MobState
 
         bool IsIncapacitated();
 
-        (IMobState state, int threshold)? GetEarliestIncapacitatedState(int minimumDamage);
+        (IMobState state, FixedPoint2 threshold)? GetEarliestIncapacitatedState(FixedPoint2 minimumDamage);
 
-        (IMobState state, int threshold)? GetEarliestCriticalState(int minimumDamage);
+        (IMobState state, FixedPoint2 threshold)? GetEarliestCriticalState(FixedPoint2 minimumDamage);
 
-        (IMobState state, int threshold)? GetEarliestDeadState(int minimumDamage);
+        (IMobState state, FixedPoint2 threshold)? GetEarliestDeadState(FixedPoint2 minimumDamage);
 
-        (IMobState state, int threshold)? GetPreviousCriticalState(int maximumDamage);
+        (IMobState state, FixedPoint2 threshold)? GetPreviousCriticalState(FixedPoint2 maximumDamage);
 
         bool TryGetEarliestIncapacitatedState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold);
+            out FixedPoint2 threshold);
 
         bool TryGetEarliestCriticalState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold);
+            out FixedPoint2 threshold);
 
         bool TryGetEarliestDeadState(
-            int minimumDamage,
+            FixedPoint2 minimumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold);
+            out FixedPoint2 threshold);
 
         bool TryGetPreviousCriticalState(
-            int maximumDamage,
+            FixedPoint2 maximumDamage,
             [NotNullWhen(true)] out IMobState? state,
-            out int threshold);
+            out FixedPoint2 threshold);
 
-        void UpdateState(int damage);
+        void UpdateState(FixedPoint2 damage);
     }
 }

Content.Shared/MobState/State/BaseMobState.cs

@@ -1,4 +1,5 @@
-using Robust.Shared.GameObjects;
+using Content.Shared.FixedPoint;
+using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 
 namespace Content.Shared.MobState.State
@@ -32,6 +33,6 @@ namespace Content.Shared.MobState.State
 
         public virtual void ExitState(IEntity entity) { }
 
-        public virtual void UpdateState(IEntity entity, int threshold) { }
+        public virtual void UpdateState(IEntity entity, FixedPoint2 threshold) { }
     }
 }

Content.Shared/MobState/State/IMobState.cs

@@ -1,4 +1,5 @@
 using Content.Shared.ActionBlocker;
+using Content.Shared.FixedPoint;
 using Robust.Shared.GameObjects;
 
 namespace Content.Shared.MobState.State
@@ -36,6 +37,6 @@ namespace Content.Shared.MobState.State
         /// <summary>
         ///     Called when this state is updated.
         /// </summary>
-        void UpdateState(IEntity entity, int threshold);
+        void UpdateState(IEntity entity, FixedPoint2 threshold);
     }
 }

Content.Tests/Shared/Chemistry/FixedPoint2_Tests.cs

@@ -1,47 +1,48 @@
 using System;
 using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 
 namespace Content.Tests.Shared.Chemistry
 {
-    [TestFixture, TestOf(typeof(ReagentUnit))]
-    public class ReagentUnit_Tests
+    [TestFixture, TestOf(typeof(FixedPoint2))]
+    public class FixedPoint2_Tests
     {
         [Test]
         [TestCase(1, "1")]
         [TestCase(0, "0")]
         [TestCase(-1, "-1")]
-        public void ReagentUnitIntegerTests(int value, string expected)
+        public void FixedPoint2IntegerTests(int value, string expected)
         {
-            var result = ReagentUnit.New(value);
+            var result = FixedPoint2.New(value);
             Assert.That($"{result}", Is.EqualTo(expected));
         }
 
         [Test]
         [TestCase(1.001f, "1")]
         [TestCase(0.999f, "1")]
-        public void ReagentUnitFloatTests(float value, string expected)
+        public void FixedPoint2FloatTests(float value, string expected)
         {
-            var result = ReagentUnit.New(value);
+            var result = FixedPoint2.New(value);
             Assert.That($"{result}", Is.EqualTo(expected));
         }
 
         [Test]
         [TestCase(1.001d, "1")]
         [TestCase(0.999d, "1")]
-        public void ReagentUnitDoubleTests(double value, string expected)
+        public void FixedPoint2DoubleTests(double value, string expected)
         {
-            var result = ReagentUnit.New(value);
+            var result = FixedPoint2.New(value);
             Assert.That($"{result}", Is.EqualTo(expected));
         }
 
         [Test]
         [TestCase("1.005", "1.01")]
         [TestCase("0.999", "1")]
-        public void ReagentUnitStringTests(string value, string expected)
+        public void FixedPoint2StringTests(string value, string expected)
         {
-            var result = ReagentUnit.New(value);
+            var result = FixedPoint2.New(value);
             Assert.That($"{result}", Is.EqualTo(expected));
         }
 
@@ -52,8 +53,8 @@ namespace Content.Tests.Shared.Chemistry
         [TestCase(1f, 2.005f, "3.01")]
         public void CalculusPlus(float aFloat, float bFloat, string expected)
         {
-            var a = ReagentUnit.New(aFloat);
-            var b = ReagentUnit.New(bFloat);
+            var a = FixedPoint2.New(aFloat);
+            var b = FixedPoint2.New(bFloat);
 
             var result = a + b;
 
@@ -66,8 +67,8 @@ namespace Content.Tests.Shared.Chemistry
         [TestCase(1f, 2.005f, "-1.01")]
         public void CalculusMinus(float aFloat, float bFloat, string expected)
         {
-            var a = ReagentUnit.New(aFloat);
-            var b = ReagentUnit.New(bFloat);
+            var a = FixedPoint2.New(aFloat);
+            var b = FixedPoint2.New(bFloat);
 
             var result = a - b;
 
@@ -80,8 +81,8 @@ namespace Content.Tests.Shared.Chemistry
         [TestCase(2.1f, 3f, "0.7")]
         public void CalculusDivision(float aFloat, float bFloat, string expected)
         {
-            var a = ReagentUnit.New(aFloat);
-            var b = ReagentUnit.New(bFloat);
+            var a = FixedPoint2.New(aFloat);
+            var b = FixedPoint2.New(bFloat);
 
             var result = a / b;
 
@@ -93,8 +94,8 @@ namespace Content.Tests.Shared.Chemistry
         [TestCase(0.999f, 3f, "3")]
         public void CalculusMultiplication(float aFloat, float bFloat, string expected)
         {
-            var a = ReagentUnit.New(aFloat);
-            var b = ReagentUnit.New(bFloat);
+            var a = FixedPoint2.New(aFloat);
+            var b = FixedPoint2.New(bFloat);
 
             var result = a * b;
 
@@ -112,18 +113,18 @@ namespace Content.Tests.Shared.Chemistry
         }
 
         [Test]
-        public void ReagentUnitMin()
+        public void FixedPoint2Min()
         {
             var unorderedList = new[]
             {
-                ReagentUnit.New(5),
-                ReagentUnit.New(3),
-                ReagentUnit.New(1),
-                ReagentUnit.New(2),
-                ReagentUnit.New(4),
+                FixedPoint2.New(5),
+                FixedPoint2.New(3),
+                FixedPoint2.New(1),
+                FixedPoint2.New(2),
+                FixedPoint2.New(4),
             };
-            var min = ReagentUnit.Min(unorderedList);
-            Assert.That(min, Is.EqualTo(ReagentUnit.New(1)));
+            var min = FixedPoint2.Min(unorderedList);
+            Assert.That(min, Is.EqualTo(FixedPoint2.New(1)));
         }
 
         [Test]
@@ -133,10 +134,10 @@ namespace Content.Tests.Shared.Chemistry
         [TestCase(1, 1, true)]
         [TestCase(0, 1, false)]
         [TestCase(-1, 1, false)]
-        public void ReagentUnitEquals(int a, int b, bool expected)
+        public void FixedPoint2Equals(int a, int b, bool expected)
         {
-            var parameter = ReagentUnit.New(a);
-            var comparison = ReagentUnit.New(b);
+            var parameter = FixedPoint2.New(a);
+            var comparison = FixedPoint2.New(b);
             Assert.That(parameter.Equals(comparison), Is.EqualTo(comparison.Equals(parameter)));
             Assert.That(comparison.Equals(parameter), Is.EqualTo(expected));
         }

Content.Tests/Shared/Chemistry/Solution_Tests.cs

@@ -1,5 +1,6 @@
 using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
+using Content.Shared.FixedPoint;
 using NUnit.Framework;
 
 namespace Content.Tests.Shared.Chemistry
@@ -11,7 +12,7 @@ namespace Content.Tests.Shared.Chemistry
         public void AddReagentAndGetSolution()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
             var quantity = solution.GetReagentQuantity("water");
 
             Assert.That(quantity.Int(), Is.EqualTo(1000));
@@ -20,7 +21,7 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void ConstructorAddReagent()
         {
-            var solution = new Solution("water", ReagentUnit.New(1000));
+            var solution = new Solution("water", FixedPoint2.New(1000));
             var quantity = solution.GetReagentQuantity("water");
 
             Assert.That(quantity.Int(), Is.EqualTo(1000));
@@ -38,7 +39,7 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void AddLessThanZeroReagentReturnsZero()
         {
-            var solution = new Solution("water", ReagentUnit.New(-1000));
+            var solution = new Solution("water", FixedPoint2.New(-1000));
             var quantity = solution.GetReagentQuantity("water");
 
             Assert.That(quantity.Int(), Is.EqualTo(0));
@@ -48,8 +49,8 @@ namespace Content.Tests.Shared.Chemistry
         public void AddingReagentsSumsProperly()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("water", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("water", FixedPoint2.New(2000));
             var quantity = solution.GetReagentQuantity("water");
 
             Assert.That(quantity.Int(), Is.EqualTo(3000));
@@ -59,8 +60,8 @@ namespace Content.Tests.Shared.Chemistry
         public void ReagentQuantitiesStayUnique()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(1000));
             Assert.That(solution.GetReagentQuantity("fire").Int(), Is.EqualTo(2000));
@@ -70,8 +71,8 @@ namespace Content.Tests.Shared.Chemistry
         public void TotalVolumeIsCorrect()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(3000));
         }
@@ -80,8 +81,8 @@ namespace Content.Tests.Shared.Chemistry
         public void CloningSolutionIsCorrect()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
             var newSolution = solution.Clone();
 
@@ -94,10 +95,10 @@ namespace Content.Tests.Shared.Chemistry
         public void RemoveSolutionRecalculatesProperly()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
-            solution.RemoveReagent("water", ReagentUnit.New(500));
+            solution.RemoveReagent("water", FixedPoint2.New(500));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(500));
             Assert.That(solution.GetReagentQuantity("fire").Int(), Is.EqualTo(2000));
@@ -107,9 +108,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveLessThanOneQuantityDoesNothing()
         {
-            var solution = new Solution("water", ReagentUnit.New(100));
+            var solution = new Solution("water", FixedPoint2.New(100));
 
-            solution.RemoveReagent("water", ReagentUnit.New(-100));
+            solution.RemoveReagent("water", FixedPoint2.New(-100));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(100));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(100));
@@ -118,9 +119,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveMoreThanTotalRemovesAllReagent()
         {
-            var solution = new Solution("water", ReagentUnit.New(100));
+            var solution = new Solution("water", FixedPoint2.New(100));
 
-            solution.RemoveReagent("water", ReagentUnit.New(1000));
+            solution.RemoveReagent("water", FixedPoint2.New(1000));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(0));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(0));
@@ -129,9 +130,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveNonExistReagentDoesNothing()
         {
-            var solution = new Solution("water", ReagentUnit.New(100));
+            var solution = new Solution("water", FixedPoint2.New(100));
 
-            solution.RemoveReagent("fire", ReagentUnit.New(1000));
+            solution.RemoveReagent("fire", FixedPoint2.New(1000));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(100));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(100));
@@ -140,9 +141,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveSolution()
         {
-            var solution = new Solution("water", ReagentUnit.New(700));
+            var solution = new Solution("water", FixedPoint2.New(700));
 
-            solution.RemoveSolution(ReagentUnit.New(500));
+            solution.RemoveSolution(FixedPoint2.New(500));
 
             //Check that edited solution is correct
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(200));
@@ -152,9 +153,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveSolutionMoreThanTotalRemovesAll()
         {
-            var solution = new Solution("water", ReagentUnit.New(800));
+            var solution = new Solution("water", FixedPoint2.New(800));
 
-            solution.RemoveSolution(ReagentUnit.New(1000));
+            solution.RemoveSolution(FixedPoint2.New(1000));
 
             //Check that edited solution is correct
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(0));
@@ -165,10 +166,10 @@ namespace Content.Tests.Shared.Chemistry
         public void RemoveSolutionRatioPreserved()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
-            solution.RemoveSolution(ReagentUnit.New(1500));
+            solution.RemoveSolution(FixedPoint2.New(1500));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(500));
             Assert.That(solution.GetReagentQuantity("fire").Int(), Is.EqualTo(1000));
@@ -178,9 +179,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void RemoveSolutionLessThanOneDoesNothing()
         {
-            var solution = new Solution("water", ReagentUnit.New(800));
+            var solution = new Solution("water", FixedPoint2.New(800));
 
-            solution.RemoveSolution(ReagentUnit.New(-200));
+            solution.RemoveSolution(FixedPoint2.New(-200));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(800));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(800));
@@ -190,10 +191,10 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitSolution()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1000));
-            solution.AddReagent("fire", ReagentUnit.New(2000));
+            solution.AddReagent("water", FixedPoint2.New(1000));
+            solution.AddReagent("fire", FixedPoint2.New(2000));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(750));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(750));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(750));
             Assert.That(solution.GetReagentQuantity("fire").Int(), Is.EqualTo(1500));
@@ -208,10 +209,10 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitSolutionFractional()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1));
-            solution.AddReagent("fire", ReagentUnit.New(2));
+            solution.AddReagent("water", FixedPoint2.New(1));
+            solution.AddReagent("fire", FixedPoint2.New(2));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(1));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(1));
 
             Assert.That(solution.GetReagentQuantity("water").Float(), Is.EqualTo(0.67f));
             Assert.That(solution.GetReagentQuantity("fire").Float(), Is.EqualTo(1.33f));
@@ -226,10 +227,10 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitSolutionFractionalOpposite()
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(1));
-            solution.AddReagent("fire", ReagentUnit.New(2));
+            solution.AddReagent("water", FixedPoint2.New(1));
+            solution.AddReagent("fire", FixedPoint2.New(2));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(2));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(2));
 
             Assert.That(solution.GetReagentQuantity("water").Float(), Is.EqualTo(0.33f));
             Assert.That(solution.GetReagentQuantity("fire").Float(), Is.EqualTo(0.67f));
@@ -246,9 +247,9 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitSolutionTinyFractionalBigSmall(float initial, float reduce, float remainder)
         {
             var solution = new Solution();
-            solution.AddReagent("water", ReagentUnit.New(initial));
+            solution.AddReagent("water", FixedPoint2.New(initial));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(reduce));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(reduce));
 
             Assert.That(solution.GetReagentQuantity("water").Float(), Is.EqualTo(remainder));
             Assert.That(solution.TotalVolume.Float(), Is.EqualTo(remainder));
@@ -265,11 +266,11 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitRounding(int amount)
         {
             var solutionOne = new Solution();
-            solutionOne.AddReagent("foo", ReagentUnit.New(amount));
-            solutionOne.AddReagent("bar", ReagentUnit.New(amount));
-            solutionOne.AddReagent("baz", ReagentUnit.New(amount));
+            solutionOne.AddReagent("foo", FixedPoint2.New(amount));
+            solutionOne.AddReagent("bar", FixedPoint2.New(amount));
+            solutionOne.AddReagent("baz", FixedPoint2.New(amount));
 
-            var splitAmount = ReagentUnit.New(5);
+            var splitAmount = FixedPoint2.New(5);
             var split = solutionOne.SplitSolution(splitAmount);
 
             Assert.That(split.TotalVolume, Is.EqualTo(splitAmount));
@@ -278,9 +279,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void SplitSolutionMoreThanTotalRemovesAll()
         {
-            var solution = new Solution("water", ReagentUnit.New(800));
+            var solution = new Solution("water", FixedPoint2.New(800));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(1000));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(1000));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(0));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(0));
@@ -292,9 +293,9 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         public void SplitSolutionLessThanOneDoesNothing()
         {
-            var solution = new Solution("water", ReagentUnit.New(800));
+            var solution = new Solution("water", FixedPoint2.New(800));
 
-            var splitSolution = solution.SplitSolution(ReagentUnit.New(-200));
+            var splitSolution = solution.SplitSolution(FixedPoint2.New(-200));
 
             Assert.That(solution.GetReagentQuantity("water").Int(), Is.EqualTo(800));
             Assert.That(solution.TotalVolume.Int(), Is.EqualTo(800));
@@ -307,33 +308,33 @@ namespace Content.Tests.Shared.Chemistry
         public void SplitSolutionZero()
         {
             var solution = new Solution();
-            solution.AddReagent("Impedrezene", ReagentUnit.New(0.01 + 0.19));
-            solution.AddReagent("Thermite", ReagentUnit.New(0.01 + 0.39));
-            solution.AddReagent("Li", ReagentUnit.New(0.01 + 0.17));
-            solution.AddReagent("F", ReagentUnit.New(0.01 + 0.17));
-            solution.AddReagent("Na", ReagentUnit.New(0 + 0.13));
-            solution.AddReagent("Hg", ReagentUnit.New(0.15 + 4.15));
-            solution.AddReagent("Cu", ReagentUnit.New(0 + 0.13));
-            solution.AddReagent("U", ReagentUnit.New(0.76 + 20.77));
-            solution.AddReagent("Fe", ReagentUnit.New(0.01 + 0.36));
-            solution.AddReagent("SpaceDrugs", ReagentUnit.New(0.02 + 0.41));
-            solution.AddReagent("Al", ReagentUnit.New(0));
-            solution.AddReagent("Glucose", ReagentUnit.New(0));
-            solution.AddReagent("O", ReagentUnit.New(0));
+            solution.AddReagent("Impedrezene", FixedPoint2.New(0.01 + 0.19));
+            solution.AddReagent("Thermite", FixedPoint2.New(0.01 + 0.39));
+            solution.AddReagent("Li", FixedPoint2.New(0.01 + 0.17));
+            solution.AddReagent("F", FixedPoint2.New(0.01 + 0.17));
+            solution.AddReagent("Na", FixedPoint2.New(0 + 0.13));
+            solution.AddReagent("Hg", FixedPoint2.New(0.15 + 4.15));
+            solution.AddReagent("Cu", FixedPoint2.New(0 + 0.13));
+            solution.AddReagent("U", FixedPoint2.New(0.76 + 20.77));
+            solution.AddReagent("Fe", FixedPoint2.New(0.01 + 0.36));
+            solution.AddReagent("SpaceDrugs", FixedPoint2.New(0.02 + 0.41));
+            solution.AddReagent("Al", FixedPoint2.New(0));
+            solution.AddReagent("Glucose", FixedPoint2.New(0));
+            solution.AddReagent("O", FixedPoint2.New(0));
 
-            solution.SplitSolution(ReagentUnit.New(0.98));
+            solution.SplitSolution(FixedPoint2.New(0.98));
         }
 
         [Test]
         public void AddSolution()
         {
             var solutionOne = new Solution();
-            solutionOne.AddReagent("water", ReagentUnit.New(1000));
-            solutionOne.AddReagent("fire", ReagentUnit.New(2000));
+            solutionOne.AddReagent("water", FixedPoint2.New(1000));
+            solutionOne.AddReagent("fire", FixedPoint2.New(2000));
 
             var solutionTwo = new Solution();
-            solutionTwo.AddReagent("water", ReagentUnit.New(500));
-            solutionTwo.AddReagent("earth", ReagentUnit.New(1000));
+            solutionTwo.AddReagent("water", FixedPoint2.New(500));
+            solutionTwo.AddReagent("earth", FixedPoint2.New(1000));
 
             solutionOne.AddSolution(solutionTwo);
 

Content.Tests/Shared/DamageTest.cs

@@ -5,6 +5,7 @@ using Robust.Shared.IoC;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.Manager;
 using System.Collections.Generic;
+using Content.Shared.FixedPoint;
 
 namespace Content.Tests.Shared
 {
@@ -21,7 +22,7 @@ namespace Content.Tests.Shared
             // "missing" blunt entry
             { "Piercing", -2 },// Turn Piercing into Healing
             { "Slash", 3 },
-            { "Radiation", 1.06f }, // Small change, paired with fractional reduction
+            { "Radiation", 1.5f },
         };
 
         static private Dictionary<string, float> _resistanceReductionDict = new()
@@ -59,75 +60,75 @@ namespace Content.Tests.Shared
             DamageSpecifier damageSpec = new(_damageSpec);
 
             // Check that it properly split up the groups into types
-            int damage;
-            Assert.That(damageSpec.Total, Is.EqualTo(8));
+            FixedPoint2 damage;
+            Assert.That(damageSpec.Total, Is.EqualTo(FixedPoint2.New(8)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(1));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(1)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Radiation", out damage));
-            Assert.That(damage, Is.EqualTo(3));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(3)));
 
             // check that integer multiplication works
             damageSpec = damageSpec * 2;
-            Assert.That(damageSpec.Total, Is.EqualTo(16));
+            Assert.That(damageSpec.Total, Is.EqualTo(FixedPoint2.New(16)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(4));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(4));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Radiation", out damage));
-            Assert.That(damage, Is.EqualTo(6));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(6)));
 
             // check that float multiplication works
             damageSpec = damageSpec * 2.2f;
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(9));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(8.8)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(9));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(8.8)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(4));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4.4)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Radiation", out damage));
-            Assert.That(damage, Is.EqualTo(13));
-            Assert.That(damageSpec.Total, Is.EqualTo(9 + 9 + 4 + 13));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(13.2)));
+            Assert.That(damageSpec.Total, Is.EqualTo(FixedPoint2.New(8.8 + 8.8 + 4.4 + 13.2)));
 
             // check that integer division works
             damageSpec = damageSpec / 2;
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(5));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4.4)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(5));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4.4)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2.2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Radiation", out damage));
-            Assert.That(damage, Is.EqualTo(7));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(6.6)));
 
             // check that float division works
-            damageSpec = damageSpec / 2.4f;
+            damageSpec = damageSpec / 2.2f;
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(2));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(2)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(1));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(1)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Radiation", out damage));
-            Assert.That(damage, Is.EqualTo(3));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(3)));
 
             // Lets also test the constructor with damage types and damage groups works properly.
             damageSpec = new(_prototypeManager.Index<DamageGroupPrototype>("Brute"), 4);
             Assert.That(damageSpec.DamageDict.TryGetValue("Blunt", out damage));
-            Assert.That(damage, Is.EqualTo(1));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(1.33)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(2)); // integer rounding. Piercing is defined as last group member in yaml.
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(1.33)));
             Assert.That(damageSpec.DamageDict.TryGetValue("Slash", out damage));
-            Assert.That(damage, Is.EqualTo(1));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(1.34))); // doesn't divide evenly, so the 0.01 goes to the last one
 
             damageSpec = new(_prototypeManager.Index<DamageTypePrototype>("Piercing"), 4);
             Assert.That(damageSpec.DamageDict.TryGetValue("Piercing", out damage));
-            Assert.That(damage, Is.EqualTo(4));
+            Assert.That(damage, Is.EqualTo(FixedPoint2.New(4)));
         }
 
         //Check that DamageSpecifier will be properly adjusted by a resistance set
@@ -146,21 +147,21 @@ namespace Content.Tests.Shared
 
             //damage is initially   20 / 20 / 10 / 30
             //Each time we subtract -5 /  0 /  8 /  0.5
-            //then multiply by       1 / -2 /  3 /  1.06
+            //then multiply by       1 / -2 /  3 /  1.5
 
             // Apply once
             damageSpec = DamageSpecifier.ApplyModifierSet(damageSpec, modifierSet);
-            Assert.That(damageSpec.DamageDict["Blunt"], Is.EqualTo(25));
-            Assert.That(damageSpec.DamageDict["Piercing"], Is.EqualTo(-40)); // became healing
-            Assert.That(damageSpec.DamageDict["Slash"], Is.EqualTo(6));
-            Assert.That(damageSpec.DamageDict["Radiation"], Is.EqualTo(31)); // would be 32 w/o fraction adjustment
+            Assert.That(damageSpec.DamageDict["Blunt"], Is.EqualTo(FixedPoint2.New(25)));
+            Assert.That(damageSpec.DamageDict["Piercing"], Is.EqualTo(FixedPoint2.New(-40))); // became healing
+            Assert.That(damageSpec.DamageDict["Slash"], Is.EqualTo(FixedPoint2.New(6)));
+            Assert.That(damageSpec.DamageDict["Radiation"], Is.EqualTo(FixedPoint2.New(44.25)));
 
             // And again, checking for some other behavior
             damageSpec = DamageSpecifier.ApplyModifierSet(damageSpec, modifierSet);
-            Assert.That(damageSpec.DamageDict["Blunt"], Is.EqualTo(30));
-            Assert.That(damageSpec.DamageDict["Piercing"], Is.EqualTo(-40)); // resistances don't apply to healing
+            Assert.That(damageSpec.DamageDict["Blunt"], Is.EqualTo(FixedPoint2.New(30)));
+            Assert.That(damageSpec.DamageDict["Piercing"], Is.EqualTo(FixedPoint2.New(-40))); // resistances don't apply to healing
             Assert.That(!damageSpec.DamageDict.ContainsKey("Slash"));  // Reduction reduced to 0, and removed from specifier
-            Assert.That(damageSpec.DamageDict["Radiation"], Is.EqualTo(32));
+            Assert.That(damageSpec.DamageDict["Radiation"], Is.EqualTo(FixedPoint2.New(65.63)));
         }
 
         // Default damage Yaml