WiP movement prediction.

Content.Client/EntryPoint.cs

@@ -107,7 +107,6 @@ namespace Content.Client
                 "WeaponCapacitorCharger",
                 "PowerCellCharger",
                 "AiController",
-                "PlayerInputMover",
                 "Computer",
                 "AsteroidRock",
                 "ResearchServer",
@@ -125,8 +124,6 @@ namespace Content.Client
                 "Food",
                 "FoodContainer",
                 "Stomach",
-                "Hunger",
-                "Thirst",
                 "Rotatable",
                 "MagicMirror",
                 "MedkitFill",
@@ -142,7 +139,6 @@ namespace Content.Client
                 "Bloodstream",
                 "TransformableContainer",
                 "Mind",
-                "MovementSpeedModifier",
                 "StorageFill",
                 "Mop",
                 "Bucket",
@@ -154,7 +150,6 @@ namespace Content.Client
                 "DroppedBodyPart",
                 "DroppedMechanism",
                 "BodyManager",
-                "Stunnable",
                 "SolarPanel",
                 "BodyScanner",
                 "Stunbaton",

Content.Client/GameObjects/Components/Mobs/StunnableComponent.cs

@@ -0,0 +1,43 @@
+using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Movement;
+using Robust.Shared.GameObjects;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Mobs
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedStunnableComponent))]
+    public class StunnableComponent : SharedStunnableComponent
+    {
+        private bool _stunned;
+        private bool _knockedDown;
+        private bool _slowedDown;
+
+        public override bool Stunned => _stunned;
+        public override bool KnockedDown => _knockedDown;
+        public override bool SlowedDown => _slowedDown;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            base.HandleComponentState(curState, nextState);
+
+            if (!(curState is StunnableComponentState state))
+            {
+                return;
+            }
+
+            _stunned = state.Stunned;
+            _knockedDown = state.KnockedDown;
+            _slowedDown = state.SlowedDown;
+
+            WalkModifierOverride = state.WalkModifierOverride;
+            RunModifierOverride = state.RunModifierOverride;
+
+            if (Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
+            {
+                movement.RefreshMovementSpeedModifiers();
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Movement/PlayerInputMoverComponent.cs

@@ -0,0 +1,26 @@
+using Content.Shared.GameObjects.Components.Movement;
+using Robust.Client.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Movement
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(IMoverComponent))]
+    public class PlayerInputMoverComponent : SharedPlayerInputMoverComponent, IMoverComponent
+    {
+        public override GridCoordinates LastPosition { get; set; }
+        public override float StepSoundDistance { get; set; }
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (IoCManager.Resolve<IPlayerManager>().LocalPlayer!.ControlledEntity == Owner)
+            {
+                base.HandleComponentState(curState, nextState);
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Nutrition/HungerComponent.cs

@@ -0,0 +1,30 @@
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Nutrition;
+using Robust.Shared.GameObjects;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Nutrition
+{
+    [RegisterComponent]
+    public class HungerComponent : SharedHungerComponent
+    {
+        private HungerThreshold _currentHungerThreshold;
+        public override HungerThreshold CurrentHungerThreshold => _currentHungerThreshold;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (!(curState is HungerComponentState hunger))
+            {
+                return;
+            }
+
+            _currentHungerThreshold = hunger.CurrentThreshold;
+
+            if (Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
+            {
+                movement.RefreshMovementSpeedModifiers();
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Nutrition/ThirstComponent.cs

@@ -0,0 +1,30 @@
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Nutrition;
+using Robust.Shared.GameObjects;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Nutrition
+{
+    [RegisterComponent]
+    public class ThirstComponent : SharedThirstComponent
+    {
+        private ThirstThreshold _currentThirstThreshold;
+        public override ThirstThreshold CurrentThirstThreshold => _currentThirstThreshold;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (!(curState is ThirstComponentState thirst))
+            {
+                return;
+            }
+
+            _currentThirstThreshold = thirst.CurrentThreshold;
+
+            if (Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
+            {
+                movement.RefreshMovementSpeedModifiers();
+            }
+        }
+    }
+}

Content.Client/GameObjects/EntitySystems/MoverSystem.cs

@@ -0,0 +1,53 @@
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Physics;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Physics;
+using Robust.Client.Player;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.IoC;
+using Robust.Shared.Physics;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class MoverSystem : SharedMoverSystem
+    {
+        [Dependency] private readonly IPlayerManager _playerManager = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            UpdatesBefore.Add(typeof(PhysicsSystem));
+        }
+
+        public override void FrameUpdate(float frameTime)
+        {
+            var playerEnt = _playerManager.LocalPlayer?.ControlledEntity;
+
+            if (playerEnt == null || !playerEnt.TryGetComponent(out IMoverComponent mover))
+            {
+                return;
+            }
+
+            var physics = playerEnt.GetComponent<PhysicsComponent>();
+            playerEnt.TryGetComponent(out CollidableComponent? collidable);
+
+            UpdateKinematics(playerEnt.Transform, mover, physics, collidable);
+        }
+
+        public override void Update(float frameTime)
+        {
+            FrameUpdate(frameTime);
+        }
+
+        protected override void SetController(SharedPhysicsComponent physics)
+        {
+            ((PhysicsComponent)physics).SetController<MoverController>();
+        }
+    }
+}

Content.Client/GameObjects/EntitySystems/VerbSystem.cs

@@ -444,7 +444,7 @@ namespace Content.Client.GameObjects.EntitySystems
                     var func = args.Function;
                     var funcId = _master._inputManager.NetworkBindMap.KeyFunctionID(args.Function);
 
-                    var message = new FullInputCmdMessage(_master._gameTiming.CurTick, funcId, BoundKeyState.Down,
+                    var message = new FullInputCmdMessage(_master._gameTiming.CurTick, _master._gameTiming.TickFraction, funcId, BoundKeyState.Down,
                         _entity.Transform.GridPosition,
                         args.PointerLocation, _entity.Uid);
 

Content.Client/State/GameScreenBase.cs

@@ -183,7 +183,7 @@ namespace Content.Client.State
             if (!_mapManager.TryFindGridAt(mousePosWorld, out var grid))
                 grid = _mapManager.GetDefaultGrid(mousePosWorld.MapId);
 
-            var message = new FullInputCmdMessage(_timing.CurTick, funcId, args.State,
+            var message = new FullInputCmdMessage(_timing.CurTick, _timing.TickFraction, funcId, args.State,
                 grid.MapToGrid(mousePosWorld), args.PointerLocation,
                 entityToClick?.Uid ?? EntityUid.Invalid);
 

Content.Client/UserInterface/ItemSlotManager.cs

@@ -77,7 +77,7 @@ namespace Content.Client.UserInterface
                 if (!_mapManager.TryFindGridAt(mousePosWorld, out var grid))
                     grid = _mapManager.GetDefaultGrid(mousePosWorld.MapId);
 
-                var message = new FullInputCmdMessage(_gameTiming.CurTick, funcId, BoundKeyState.Down,
+                var message = new FullInputCmdMessage(_gameTiming.CurTick, _gameTiming.TickFraction, funcId, BoundKeyState.Down,
                     grid.MapToGrid(mousePosWorld), args.PointerLocation, item.Uid);
 
                 // client side command handlers will always be sent the local player session.

Content.Server/AI/Operators/Movement/BaseMover.cs

@@ -2,10 +2,10 @@ using System;
 using System.Collections.Generic;
 using System.Threading;
 using Content.Server.GameObjects.Components.Movement;
-using Content.Server.GameObjects.EntitySystems;
 using Content.Server.GameObjects.EntitySystems.AI.Pathfinding;
 using Content.Server.GameObjects.EntitySystems.AI.Pathfinding.Pathfinders;
 using Content.Server.GameObjects.EntitySystems.JobQueues;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Map;

Content.Server/AI/Utility/Considerations/ActionBlocker/CanMoveCon.cs

@@ -1,7 +1,7 @@
 using Content.Server.AI.Utility.Curves;
 using Content.Server.AI.WorldState;
 using Content.Server.AI.WorldState.States;
-using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.EntitySystems;
 
 namespace Content.Server.AI.Utility.Considerations.ActionBlocker
 {

Content.Server/AI/Utility/Considerations/Nutrition/Drink/ThirstCon.cs

@@ -2,6 +2,7 @@ using Content.Server.AI.Utility.Curves;
 using Content.Server.AI.WorldState;
 using Content.Server.AI.WorldState.States;
 using Content.Server.GameObjects.Components.Nutrition;
+using Content.Shared.GameObjects.Components.Nutrition;
 
 namespace Content.Server.AI.Utility.Considerations.Nutrition.Drink
 {

Content.Server/AI/Utility/Considerations/Nutrition/Food/HungerCon.cs

@@ -2,6 +2,7 @@ using Content.Server.AI.Utility.Curves;
 using Content.Server.AI.WorldState;
 using Content.Server.AI.WorldState.States;
 using Content.Server.GameObjects.Components.Nutrition;
+using Content.Shared.GameObjects.Components.Nutrition;
 
 namespace Content.Server.AI.Utility.Considerations.Nutrition
 {

Content.Server/AI/WorldState/States/Nutrition/HungryState.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Server.GameObjects.Components.Nutrition;
+using Content.Shared.GameObjects.Components.Nutrition;
 using JetBrains.Annotations;
 
 namespace Content.Server.AI.WorldState.States.Nutrition

Content.Server/AI/WorldState/States/Nutrition/ThirstyState.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Server.GameObjects.Components.Nutrition;
+using Content.Shared.GameObjects.Components.Nutrition;
 using JetBrains.Annotations;
 using ThirstComponent = Content.Server.GameObjects.Components.Nutrition.ThirstComponent;
 

Content.Server/Chat/ChatManager.cs

@@ -6,6 +6,7 @@ using Content.Server.Interfaces.Chat;
 using Content.Server.Observer;
 using Content.Server.Players;
 using Content.Shared.Chat;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Network;

Content.Server/GameObjects/Components/Chemistry/ReagentDispenserComponent.cs

@@ -8,6 +8,7 @@ using Content.Server.Interfaces.GameObjects;
 using Content.Server.Utility;
 using Content.Shared.Chemistry;
 using Content.Shared.GameObjects.Components.Chemistry;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;

Content.Server/GameObjects/Components/GUI/InventoryComponent.cs

@@ -5,6 +5,7 @@ using System.Threading.Tasks.Dataflow;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces;
 using Content.Shared.GameObjects;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;

Content.Server/GameObjects/Components/Instruments/InstrumentComponent.cs

@@ -3,11 +3,9 @@ using System.Linq;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces;
-using Content.Server.Interfaces.GameObjects;
 using Content.Server.Mobs;
-using Content.Server.Utility;
 using Content.Shared.GameObjects.Components.Instruments;
-using NFluidsynth;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
@@ -15,16 +13,12 @@ using Robust.Server.Interfaces.Player;
 using Robust.Server.Player;
 using Robust.Shared.Enums;
 using Robust.Shared.GameObjects;
-using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.Interfaces.Log;
 using Robust.Shared.Interfaces.Network;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Players;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
-using Logger = Robust.Shared.Log.Logger;
-using MidiEvent = Robust.Shared.Audio.Midi.MidiEvent;
 
 namespace Content.Server.GameObjects.Components.Instruments
 {

Content.Server/GameObjects/Components/Interactable/ToolComponent.cs

@@ -12,6 +12,7 @@ using Content.Shared.Chemistry;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components;
 using Content.Shared.GameObjects.Components.Interactable;
+using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Maps;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;

Content.Server/GameObjects/Components/Items/Storage/ItemComponent.cs

@@ -7,6 +7,7 @@ using Content.Server.Throw;
 using Content.Server.Utility;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Items;
+using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Physics;
 using Robust.Server.GameObjects;
 using Robust.Server.Interfaces.GameObjects;

Content.Server/GameObjects/Components/Mobs/DamageStates.cs

@@ -3,6 +3,7 @@ using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Mobs;
 using Content.Shared.Audio;
 using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.EntitySystems;
 using Microsoft.EntityFrameworkCore.Metadata.Builders;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;

Content.Server/GameObjects/Components/Mobs/SpeciesComponent.cs

@@ -3,16 +3,18 @@ using System.Collections.Generic;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
 using Content.Server.Observer;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Network;
+using Robust.Shared.Players;
 using Robust.Shared.Serialization;
 
 namespace Content.Server.GameObjects
@@ -218,11 +220,11 @@ namespace Content.Server.GameObjects
             Owner.GetComponent<DamageableComponent>().TakeDamage(DamageType.Heat, burnDamage, null);
         }
 
-        void IRelayMoveInput.MoveInputPressed(IPlayerSession session)
+        void IRelayMoveInput.MoveInputPressed(ICommonSession session)
         {
             if (CurrentDamageState is DeadState)
             {
-                new Ghost().Execute(null, session, null);
+                new Ghost().Execute(null, (IPlayerSession) session, null);
             }
         }
     }

Content.Server/GameObjects/Components/Mobs/StunnableComponent.cs

@@ -1,50 +1,40 @@
 using System;
 using System.Threading;
-using Content.Server.GameObjects.Components.Movement;
 using Content.Server.GameObjects.EntitySystems;
-using Content.Server.Interfaces.GameObjects;
 using Content.Server.Mobs;
 using Content.Shared.Audio;
 using Content.Shared.GameObjects.Components.Mobs;
-using Microsoft.Extensions.Logging;
-using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;
-using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Systems;
-using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.Interfaces.Timers;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
-using Robust.Shared.Log;
-using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 using Timer = Robust.Shared.Timers.Timer;
-using CannyFastMath;
+using Content.Shared.GameObjects.Components.Movement;
 using Math = CannyFastMath.Math;
 using MathF = CannyFastMath.MathF;
 
 namespace Content.Server.GameObjects.Components.Mobs
 {
     [RegisterComponent]
-    public class StunnableComponent : Component, IActionBlocker, IInteractHand, IMoveSpeedModifier
+    [ComponentReference(typeof(SharedStunnableComponent))]
+    public class StunnableComponent : SharedStunnableComponent, IInteractHand
     {
-        public override string Name => "Stunnable";
-
 #pragma warning disable 649
         [Dependency] private IGameTiming _gameTiming;
 #pragma warning restore 649
 
         private TimeSpan? _lastStun;
 
-        [ViewVariables]
+        [ViewVariables] public TimeSpan? StunStart => _lastStun;
-        public TimeSpan? StunStart => _lastStun;
 
         [ViewVariables]
         public TimeSpan? StunEnd => _lastStun == null
             ? (TimeSpan?) null
-            : _gameTiming.CurTime + (TimeSpan.FromSeconds(Math.Max(_stunnedTimer, Math.Max(_knockdownTimer, _slowdownTimer))));
+            : _gameTiming.CurTime +
+              (TimeSpan.FromSeconds(Math.Max(_stunnedTimer, Math.Max(_knockdownTimer, _slowdownTimer))));
 
         private const int StunLevels = 8;
 
@@ -59,14 +49,12 @@ namespace Content.Server.GameObjects.Components.Mobs
         private float _knockdownTimer = 0f;
         private float _slowdownTimer = 0f;
 
-        private float _walkModifierOverride = 0f;
-        private float _runModifierOverride = 0f;
         private string _stunTexture;
         private CancellationTokenSource _statusRemoveCancellation = new CancellationTokenSource();
 
-        [ViewVariables] public bool Stunned => _stunnedTimer > 0f;
+        [ViewVariables] public override bool Stunned => _stunnedTimer > 0f;
-        [ViewVariables] public bool KnockedDown => _knockdownTimer > 0f;
+        [ViewVariables] public override bool KnockedDown => _knockdownTimer > 0f;
-        [ViewVariables] public bool SlowedDown => _slowdownTimer > 0f;
+        [ViewVariables] public override bool SlowedDown => _slowdownTimer > 0f;
         [ViewVariables] public float StunCap => _stunCap;
         [ViewVariables] public float KnockdownCap => _knockdownCap;
         [ViewVariables] public float SlowdownCap => _slowdownCap;
@@ -79,7 +67,8 @@ namespace Content.Server.GameObjects.Components.Mobs
             serializer.DataField(ref _slowdownCap, "slowdownCap", 20f);
             serializer.DataField(ref _helpInterval, "helpInterval", 1f);
             serializer.DataField(ref _helpKnockdownRemove, "helpKnockdownRemove", 1f);
-            serializer.DataField(ref _stunTexture, "stunTexture", "/Textures/Objects/Melee/stunbaton.rsi/stunbaton_off.png");
+            serializer.DataField(ref _stunTexture, "stunTexture",
+                "/Textures/Objects/Melee/stunbaton.rsi/stunbaton_off.png");
         }
 
         /// <summary>
@@ -99,6 +88,7 @@ namespace Content.Server.GameObjects.Components.Mobs
             _lastStun = _gameTiming.CurTime;
 
             SetStatusEffect();
+            Dirty();
         }
 
         /// <summary>
@@ -118,6 +108,7 @@ namespace Content.Server.GameObjects.Components.Mobs
             _lastStun = _gameTiming.CurTime;
 
             SetStatusEffect();
+            Dirty();
         }
 
         /// <summary>
@@ -143,16 +134,17 @@ namespace Content.Server.GameObjects.Components.Mobs
             if (seconds <= 0f)
                 return;
 
-            _walkModifierOverride = walkModifierOverride;
+            WalkModifierOverride = walkModifierOverride;
-            _runModifierOverride = runModifierOverride;
+            RunModifierOverride = runModifierOverride;
 
             _slowdownTimer = seconds;
             _lastStun = _gameTiming.CurTime;
 
-            if(Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
+            if (Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
                 movement.RefreshMovementSpeedModifiers();
 
             SetStatusEffect();
+            Dirty();
         }
 
         /// <summary>
@@ -162,6 +154,7 @@ namespace Content.Server.GameObjects.Components.Mobs
         {
             _knockdownTimer = 0f;
             _stunnedTimer = 0f;
+            Dirty();
         }
 
         public bool InteractHand(InteractHandEventArgs eventArgs)
@@ -170,7 +163,7 @@ namespace Content.Server.GameObjects.Components.Mobs
                 return false;
 
             _canHelp = false;
-            Timer.Spawn(((int)_helpInterval*1000), () => _canHelp = true);
+            Timer.Spawn(((int) _helpInterval * 1000), () => _canHelp = true);
 
             EntitySystem.Get<AudioSystem>()
                 .PlayFromEntity("/Audio/effects/thudswoosh.ogg", Owner, AudioHelpers.WithVariation(0.25f));
@@ -179,6 +172,7 @@ namespace Content.Server.GameObjects.Components.Mobs
 
             SetStatusEffect();
 
+            Dirty();
             return true;
         }
 
@@ -187,7 +181,8 @@ namespace Content.Server.GameObjects.Components.Mobs
             if (!Owner.TryGetComponent(out ServerStatusEffectsComponent status))
                 return;
 
-            status.ChangeStatusEffect(StatusEffect.Stun, _stunTexture, (StunStart == null || StunEnd == null) ? default : (StunStart.Value, StunEnd.Value));
+            status.ChangeStatusEffect(StatusEffect.Stun, _stunTexture,
+                (StunStart == null || StunEnd == null) ? default : (StunStart.Value, StunEnd.Value));
             _statusRemoveCancellation.Cancel();
             _statusRemoveCancellation = new CancellationTokenSource();
         }
@@ -201,6 +196,7 @@ namespace Content.Server.GameObjects.Components.Mobs
                 if (_stunnedTimer <= 0)
                 {
                     _stunnedTimer = 0f;
+                    Dirty();
                 }
             }
 
@@ -213,6 +209,7 @@ namespace Content.Server.GameObjects.Components.Mobs
                     StandingStateHelper.Standing(Owner);
 
                     _knockdownTimer = 0f;
+                    Dirty();
                 }
             }
 
@@ -224,12 +221,14 @@ namespace Content.Server.GameObjects.Components.Mobs
                 {
                     _slowdownTimer = 0f;
 
-                    if(Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
+                    if (Owner.TryGetComponent(out MovementSpeedModifierComponent movement))
                         movement.RefreshMovementSpeedModifiers();
+                    Dirty();
                 }
             }
 
-            if (!StunStart.HasValue || !StunEnd.HasValue || !Owner.TryGetComponent(out ServerStatusEffectsComponent status))
+            if (!StunStart.HasValue || !StunEnd.HasValue ||
+                !Owner.TryGetComponent(out ServerStatusEffectsComponent status))
                 return;
 
             var start = StunStart.Value;
@@ -245,31 +244,6 @@ namespace Content.Server.GameObjects.Components.Mobs
             }
         }
 
-        #region ActionBlockers
-        public bool CanMove() => (!Stunned);
-
-        public bool CanInteract() => (!Stunned);
-
-        public bool CanUse() => (!Stunned);
-
-        public bool CanThrow() => (!Stunned);
-
-        public bool CanSpeak() => true;
-
-        public bool CanDrop() => (!Stunned);
-
-        public bool CanPickup() => (!Stunned);
-
-        public bool CanEmote() => true;
-
-        public bool CanAttack() => (!Stunned);
-
-        public bool CanEquip() => (!Stunned);
-
-        public bool CanUnequip() => (!Stunned);
-        public bool CanChangeDirection() => true;
-        #endregion
-
         public float StunTimeModifier
         {
             get
@@ -318,8 +292,11 @@ namespace Content.Server.GameObjects.Components.Mobs
             }
         }
 
-        public float WalkSpeedModifier => (SlowedDown ? (_walkModifierOverride <= 0f ? 0.5f : _walkModifierOverride) : 1f);
+        public override ComponentState GetComponentState()
-        public float SprintSpeedModifier => (SlowedDown ? (_runModifierOverride <= 0f ? 0.5f : _runModifierOverride) : 1f);
+        {
+            return new StunnableComponentState(Stunned, KnockedDown, SlowedDown, WalkModifierOverride,
+                RunModifierOverride);
+        }
     }
 
     /// <summary>

Content.Server/GameObjects/Components/Movement/AiControllerComponent.cs

@@ -1,6 +1,4 @@
-using Content.Server.AI.Utility;
+using Content.Shared.GameObjects.Components.Movement;
-using Content.Server.AI.Utility.AiLogic;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
 using Robust.Server.AI;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
@@ -111,7 +109,7 @@ namespace Content.Server.GameObjects.Components.Movement
         ///     Is the entity Sprinting (running)?
         /// </summary>
         [ViewVariables]
-        public bool Sprinting { get; set; } = true;
+        public bool Sprinting { get; } = true;
 
         /// <summary>
         ///     Calculated linear velocity direction of the entity.
@@ -119,11 +117,14 @@ namespace Content.Server.GameObjects.Components.Movement
         [ViewVariables]
         public Vector2 VelocityDir { get; set; }
 
+        (Vector2 walking, Vector2 sprinting) IMoverComponent.VelocityDir =>
+            Sprinting ? (Vector2.Zero, VelocityDir) : (VelocityDir, Vector2.Zero);
+
         public GridCoordinates LastPosition { get; set; }
 
-        [ViewVariables(VVAccess.ReadWrite)]
+        [ViewVariables(VVAccess.ReadWrite)] public float StepSoundDistance { get; set; }
-        public float StepSoundDistance { get; set; }
 
-        public void SetVelocityDirection(Direction direction, bool enabled) { }
+        public void SetVelocityDirection(Direction direction, ushort subTick, bool enabled) { }
+        public void SetSprinting(ushort subTick, bool enabled) { }
     }
 }

Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs

@@ -1,17 +1,11 @@
-
+using Content.Shared.GameObjects.Components.Movement;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
-using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
-using Robust.Shared.Log;
 using Robust.Shared.Map;
-using Robust.Shared.Maths;
 using Robust.Shared.Physics;
-using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
-using Robust.Shared.IoC;
+
-using Robust.Shared.Interfaces.Configuration;
+#nullable enable
-using Robust.Shared.Configuration;
 
 namespace Content.Server.GameObjects.Components.Movement
 {
@@ -20,138 +14,11 @@ namespace Content.Server.GameObjects.Components.Movement
     /// </summary>
     [RegisterComponent]
     [ComponentReference(typeof(IMoverComponent))]
-    public class PlayerInputMoverComponent : Component, IMoverComponent, ICollideSpecial
+    public class PlayerInputMoverComponent : SharedPlayerInputMoverComponent, IMoverComponent, ICollideSpecial
     {
-#pragma warning disable 649
+        public override GridCoordinates LastPosition { get; set; }
-        [Dependency] private readonly IConfigurationManager _configurationManager;
-#pragma warning restore 649
 
-        private bool _movingUp;
+        public override float StepSoundDistance { get; set; }
-        private bool _movingDown;
-        private bool _movingLeft;
-        private bool _movingRight;
-
-        /// <inheritdoc />
-        public override string Name => "PlayerInputMover";
-
-        /// <summary>
-        ///     Movement speed (m/s) that the entity walks, after modifiers
-        /// </summary>
-        [ViewVariables]
-        public float CurrentWalkSpeed
-        {
-            get
-            {
-                if (Owner.TryGetComponent(out MovementSpeedModifierComponent component))
-                {
-                    return component.CurrentWalkSpeed;
-                }
-
-                return MovementSpeedModifierComponent.DefaultBaseWalkSpeed;
-            }
-        }
-        /// <summary>
-        ///     Movement speed (m/s) that the entity walks, after modifiers
-        /// </summary>
-        [ViewVariables]
-        public float CurrentSprintSpeed
-        {
-            get
-            {
-                if (Owner.TryGetComponent(out MovementSpeedModifierComponent component))
-                {
-                    return component.CurrentSprintSpeed;
-                }
-
-                return MovementSpeedModifierComponent.DefaultBaseSprintSpeed;
-            }
-        }
-
-        /// <inheritdoc />
-        [ViewVariables]
-        public float CurrentPushSpeed => 5.0f;
-
-        /// <inheritdoc />
-        [ViewVariables]
-        public float GrabRange => 0.2f;
-
-        /// <summary>
-        ///     Is the entity Sprinting (running)?
-        /// </summary>
-        [ViewVariables]
-        public bool Sprinting { get; set; } = true;
-
-        /// <summary>
-        ///     Calculated linear velocity direction of the entity.
-        /// </summary>
-        [ViewVariables]
-        public Vector2 VelocityDir { get; private set; }
-
-        public GridCoordinates LastPosition { get; set; }
-
-        public float StepSoundDistance { get; set; }
-
-        /// <summary>
-        ///     Whether or not the player can move diagonally.
-        /// </summary>
-        [ViewVariables] public bool DiagonalMovementEnabled => _configurationManager.GetCVar<bool>("game.diagonalmovement");
-
-        /// <inheritdoc />
-        public override void OnAdd()
-        {
-            // This component requires that the entity has a PhysicsComponent.
-            if (!Owner.HasComponent<PhysicsComponent>())
-                Logger.Error($"[ECS] {Owner.Prototype.Name} - {nameof(PlayerInputMoverComponent)} requires {nameof(PhysicsComponent)}. ");
-
-            base.OnAdd();
-        }
-
-        /// <summary>
-        ///     Toggles one of the four cardinal directions. Each of the four directions are
-        ///     composed into a single direction vector, <see cref="VelocityDir"/>. Enabling
-        ///     opposite directions will cancel each other out, resulting in no direction.
-        /// </summary>
-        /// <param name="direction">Direction to toggle.</param>
-        /// <param name="enabled">If the direction is active.</param>
-        public void SetVelocityDirection(Direction direction, bool enabled)
-        {
-            switch (direction)
-            {
-                case Direction.East:
-                    _movingRight = enabled;
-                    break;
-                case Direction.North:
-                    _movingUp = enabled;
-                    break;
-                case Direction.West:
-                    _movingLeft = enabled;
-                    break;
-                case Direction.South:
-                    _movingDown = enabled;
-                    break;
-            }
-
-            // key directions are in screen coordinates
-            // _moveDir is in world coordinates
-            // if the camera is moved, this needs to be changed
-
-            var x = 0;
-            x -= _movingLeft ? 1 : 0;
-            x += _movingRight ? 1 : 0;
-
-            var y = 0;
-            if (DiagonalMovementEnabled || x == 0)
-            {
-                y -= _movingDown ? 1 : 0;
-                y += _movingUp ? 1 : 0;
-            }
-
-            VelocityDir = new Vector2(x, y);
-
-            // can't normalize zero length vector
-            if (VelocityDir.LengthSquared > 1.0e-6)
-                VelocityDir = VelocityDir.Normalized;
-        }
 
         /// <summary>
         /// Special collision override, can be used to give custom behaviors deciding when to collide
@@ -167,6 +34,5 @@ namespace Content.Server.GameObjects.Components.Movement
             }
             return false;
         }
-
     }
 }

Content.Server/GameObjects/Components/Movement/ShuttleControllerComponent.cs

@@ -1,5 +1,5 @@
 using Content.Server.GameObjects.Components.Mobs;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Movement;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Shared.GameObjects;
@@ -44,11 +44,11 @@ namespace Content.Server.GameObjects.Components.Movement
         public float GrabRange => 0.0f;
 
         public bool Sprinting { get; set; }
-        public Vector2 VelocityDir { get; } = Vector2.Zero;
+        public (Vector2 walking, Vector2 sprinting) VelocityDir { get; } = (Vector2.Zero, Vector2.Zero);
         public GridCoordinates LastPosition { get; set; }
         public float StepSoundDistance { get; set; }
 
-        public void SetVelocityDirection(Direction direction, bool enabled)
+        public void SetVelocityDirection(Direction direction, ushort subTick, bool enabled)
         {
             var gridId = Owner.Transform.GridID;
 
@@ -74,6 +74,11 @@ namespace Content.Server.GameObjects.Components.Movement
             }
         }
 
+        public void SetSprinting(ushort subTick, bool enabled)
+        {
+            // Shuttles can't sprint.
+        }
+
         private Vector2 CalcNewVelocity(Direction direction, bool enabled)
         {
             switch (direction)

Content.Server/GameObjects/Components/Nutrition/HungerComponent.cs

@@ -4,6 +4,8 @@ using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Movement;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Nutrition;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.Random;
@@ -15,14 +17,12 @@ using Robust.Shared.ViewVariables;
 namespace Content.Server.GameObjects.Components.Nutrition
 {
     [RegisterComponent]
-    public sealed class HungerComponent : Component, IMoveSpeedModifier
+    public sealed class HungerComponent : SharedHungerComponent
     {
 #pragma warning disable 649
         [Dependency] private readonly IRobustRandom _random;
 #pragma warning restore 649
 
-        public override string Name => "Hunger";
-
         // Base stuff
         public float BaseDecayRate => _baseDecayRate;
         [ViewVariables] private float _baseDecayRate;
@@ -30,7 +30,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
         [ViewVariables] private float _actualDecayRate;
 
         // Hunger
-        public HungerThreshold CurrentHungerThreshold => _currentHungerThreshold;
+        public override HungerThreshold CurrentHungerThreshold => _currentHungerThreshold;
         private HungerThreshold _currentHungerThreshold;
         private HungerThreshold _lastHungerThreshold;
         public float CurrentHunger => _currentHunger;
@@ -127,6 +127,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
             _currentHungerThreshold = GetHungerThreshold(_currentHunger);
             _lastHungerThreshold = HungerThreshold.Okay; // TODO: Potentially change this -> Used Okay because no effects.
             HungerThresholdEffect(true);
+            Dirty();
         }
 
         public HungerThreshold GetHungerThreshold(float food)
@@ -161,6 +162,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
             {
                 _currentHungerThreshold = calculatedHungerThreshold;
                 HungerThresholdEffect();
+                Dirty();
             }
             if (_currentHungerThreshold == HungerThreshold.Dead)
             {
@@ -179,36 +181,11 @@ namespace Content.Server.GameObjects.Components.Nutrition
             _currentHunger = HungerThresholds[HungerThreshold.Okay];
         }
 
-        float IMoveSpeedModifier.WalkSpeedModifier
+        public override ComponentState GetComponentState()
         {
-            get
+            return new HungerComponentState(_currentHungerThreshold);
-            {
-                if (_currentHungerThreshold == HungerThreshold.Starving)
-                {
-                    return 0.5f;
-                }
-                return 1.0f;
-            }
-        }
-        float IMoveSpeedModifier.SprintSpeedModifier
-        {
-            get
-            {
-                if (_currentHungerThreshold == HungerThreshold.Starving)
-                {
-                    return 0.5f;
-                }
-                return 1.0f;
-            }
         }
     }
 
-    public enum HungerThreshold
+
-    {
-        Overfed,
-        Okay,
-        Peckish,
-        Starving,
-        Dead,
-    }
 }

Content.Server/GameObjects/Components/Nutrition/ThirstComponent.cs

@@ -4,6 +4,8 @@ using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Movement;
 using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Nutrition;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.Random;
@@ -15,14 +17,12 @@ using Robust.Shared.ViewVariables;
 namespace Content.Server.GameObjects.Components.Nutrition
 {
     [RegisterComponent]
-    public sealed class ThirstComponent : Component, IMoveSpeedModifier
+    public sealed class ThirstComponent : SharedThirstComponent, IMoveSpeedModifier
     {
 #pragma warning disable 649
         [Dependency] private readonly IRobustRandom _random;
 #pragma warning restore 649
 
-        public override string Name => "Thirst";
-
         // Base stuff
         public float BaseDecayRate => _baseDecayRate;
         [ViewVariables] private float _baseDecayRate;
@@ -30,7 +30,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
         [ViewVariables] private float _actualDecayRate;
 
         // Thirst
-        public ThirstThreshold CurrentThirstThreshold => _currentThirstThreshold;
+        public override ThirstThreshold CurrentThirstThreshold => _currentThirstThreshold;
         private ThirstThreshold _currentThirstThreshold;
         private ThirstThreshold _lastThirstThreshold;
         public float CurrentThirst => _currentThirst;
@@ -126,6 +126,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
             _lastThirstThreshold = ThirstThreshold.Okay; // TODO: Potentially change this -> Used Okay because no effects.
             // TODO: Check all thresholds make sense and throw if they don't.
             ThirstThresholdEffect(true);
+            Dirty();
         }
 
         public ThirstThreshold GetThirstThreshold(float drink)
@@ -160,6 +161,7 @@ namespace Content.Server.GameObjects.Components.Nutrition
             {
                 _currentThirstThreshold = calculatedThirstThreshold;
                 ThirstThresholdEffect();
+                Dirty();
             }
 
             if (_currentThirstThreshold == ThirstThreshold.Dead)
@@ -174,42 +176,16 @@ namespace Content.Server.GameObjects.Components.Nutrition
             }
         }
 
-        float IMoveSpeedModifier.SprintSpeedModifier
-        {
-            get
-            {
-                if (_currentThirstThreshold == ThirstThreshold.Parched)
-                {
-                    return 0.25f;
-                }
-                return 1.0f;
-            }
-        }
-        float IMoveSpeedModifier.WalkSpeedModifier
-        {
-            get
-            {
-                if (_currentThirstThreshold == ThirstThreshold.Parched)
-                {
-                    return 0.5f;
-                }
-                return 1.0f;
-            }
-        }
 
         public void ResetThirst()
         {
             _currentThirst = ThirstThresholds[ThirstThreshold.Okay];
         }
+
+        public override ComponentState GetComponentState()
+        {
+            return new ThirstComponentState(_currentThirstThreshold);
+        }
     }
 
-    public enum ThirstThreshold
-    {
-        // Hydrohomies
-        OverHydrated,
-        Okay,
-        Thirsty,
-        Parched,
-        Dead,
-    }
 }

Content.Server/GameObjects/Components/Observer/GhostComponent.cs

@@ -1,6 +1,7 @@
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Players;
 using Content.Shared.GameObjects.Components.Observer;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.Components;
 using Robust.Server.Interfaces.GameObjects;
@@ -15,7 +16,7 @@ using Timer = Robust.Shared.Timers.Timer;
 namespace Content.Server.GameObjects.Components.Observer
 {
     [RegisterComponent]
-    public class GhostComponent : SharedGhostComponent, IActionBlocker
+    public class GhostComponent : SharedGhostComponent
     {
         private bool _canReturnToBody = true;
 
@@ -75,13 +76,5 @@ namespace Content.Server.GameObjects.Components.Observer
                     break;
             }
         }
-
-        public bool CanInteract() => false;
-        public bool CanUse() => false;
-        public bool CanThrow() => false;
-        public bool CanDrop() => false;
-        public bool CanPickup() => false;
-        public bool CanEmote() => false;
-        public bool CanAttack() => false;
     }
 }

Content.Server/GameObjects/Components/Weapon/Ranged/RangedWeapon.cs

@@ -1,8 +1,8 @@
 using System;
 using Content.Server.GameObjects.Components.Mobs;
-using Content.Server.GameObjects.EntitySystems;
 using Content.Server.GameObjects.Components.Movement;
 using Content.Shared.GameObjects.Components.Weapons.Ranged;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Network;

Content.Server/GameObjects/EntitySystems/AI/AiSystem.cs

@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using Content.Server.AI.Utility.AiLogic;
 using Content.Server.GameObjects.Components.Movement;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.Components.Movement;
 using JetBrains.Annotations;
 using Robust.Server.AI;
 using Robust.Server.Interfaces.Console;

Content.Server/GameObjects/EntitySystems/MoverSystem.cs

@@ -2,56 +2,43 @@
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Movement;
 using Content.Server.GameObjects.Components.Sound;
-using Content.Server.Interfaces.GameObjects.Components.Movement;
 using Content.Shared.Audio;
 using Content.Shared.GameObjects.Components.Inventory;
 using Content.Shared.GameObjects.Components.Movement;
-using Content.Shared.Input;
+using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Maps;
 using Content.Shared.Physics;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;
-using Robust.Server.Interfaces.Player;
 using Robust.Server.Interfaces.Timing;
-using Robust.Shared.Configuration;
-using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.GameObjects.Components.Transform;
-using Robust.Shared.GameObjects.Systems;
-using Robust.Shared.Input;
-using Robust.Shared.Input.Binding;
-using Robust.Shared.Interfaces.Configuration;
-using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.Interfaces.GameObjects.Components;
 using Robust.Shared.Interfaces.Map;
-using Robust.Shared.Interfaces.Physics;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Map;
-using Robust.Shared.Maths;
+using Robust.Shared.Physics;
-using Robust.Shared.Players;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
 
+#nullable enable
+
 namespace Content.Server.GameObjects.EntitySystems
 {
     [UsedImplicitly]
-    internal class MoverSystem : EntitySystem
+    internal class MoverSystem : SharedMoverSystem
     {
 #pragma warning disable 649
-        [Dependency] private readonly IPauseManager _pauseManager;
+        [Dependency] private readonly IPauseManager _pauseManager = default!;
-        [Dependency] private readonly IPrototypeManager _prototypeManager;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
-        [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager;
+        [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager = default!;
-        [Dependency] private readonly IMapManager _mapManager;
+        [Dependency] private readonly IMapManager _mapManager = default!;
-        [Dependency] private readonly IRobustRandom _robustRandom;
+        [Dependency] private readonly IRobustRandom _robustRandom = default!;
-        [Dependency] private readonly IConfigurationManager _configurationManager;
-        [Dependency] private readonly IEntityManager _entityManager;
-        [Dependency] private readonly IPhysicsManager _physicsManager;
 #pragma warning restore 649
 
-        private AudioSystem _audioSystem;
+        private AudioSystem _audioSystem = default!;
 
         private const float StepSoundMoveDistanceRunning = 2;
         private const float StepSoundMoveDistanceWalking = 1.5f;
@@ -59,40 +46,41 @@ namespace Content.Server.GameObjects.EntitySystems
         /// <inheritdoc />
         public override void Initialize()
         {
-            EntityQuery = new TypeEntityQuery(typeof(IMoverComponent));
+            base.Initialize();
-
-            var moveUpCmdHandler = InputCmdHandler.FromDelegate(
-                session => HandleDirChange(session, Direction.North, true),
-                session => HandleDirChange(session, Direction.North, false));
-            var moveLeftCmdHandler = InputCmdHandler.FromDelegate(
-                session => HandleDirChange(session, Direction.West, true),
-                session => HandleDirChange(session, Direction.West, false));
-            var moveRightCmdHandler = InputCmdHandler.FromDelegate(
-                session => HandleDirChange(session, Direction.East, true),
-                session => HandleDirChange(session, Direction.East, false));
-            var moveDownCmdHandler = InputCmdHandler.FromDelegate(
-                session => HandleDirChange(session, Direction.South, true),
-                session => HandleDirChange(session, Direction.South, false));
-            var runCmdHandler = InputCmdHandler.FromDelegate(
-                session => HandleRunChange(session, false),
-                session => HandleRunChange(session, true));
-
-            var input = EntitySystemManager.GetEntitySystem<InputSystem>();
-
-            CommandBinds.Builder
-                .Bind(EngineKeyFunctions.MoveUp, moveUpCmdHandler)
-                .Bind(EngineKeyFunctions.MoveLeft, moveLeftCmdHandler)
-                .Bind(EngineKeyFunctions.MoveRight, moveRightCmdHandler)
-                .Bind(EngineKeyFunctions.MoveDown, moveDownCmdHandler)
-                .Bind(EngineKeyFunctions.Run, runCmdHandler)
-                .Register<MoverSystem>();
 
             SubscribeLocalEvent<PlayerAttachSystemMessage>(PlayerAttached);
             SubscribeLocalEvent<PlayerDetachedSystemMessage>(PlayerDetached);
 
             _audioSystem = EntitySystemManager.GetEntitySystem<AudioSystem>();
 
-            _configurationManager.RegisterCVar("game.diagonalmovement", true, CVar.ARCHIVE);
+            UpdatesBefore.Add(typeof(PhysicsSystem));
+        }
+
+        public override void Update(float frameTime)
+        {
+            foreach (var entity in RelevantEntities)
+            {
+                if (_pauseManager.IsEntityPaused(entity))
+                {
+                    continue;
+                }
+
+                var mover = entity.GetComponent<IMoverComponent>();
+                var physics = entity.GetComponent<SharedPhysicsComponent>();
+                if (entity.TryGetComponent<CollidableComponent>(out var collider))
+                {
+                    UpdateKinematics(entity.Transform, mover, physics, collider);
+                }
+                else
+                {
+                    UpdateKinematics(entity.Transform, mover, physics);
+                }
+            }
+        }
+
+        protected override void SetController(SharedPhysicsComponent physics)
+        {
+            ((PhysicsComponent) physics).SetController<MoverController>();
         }
 
         private static void PlayerAttached(PlayerAttachSystemMessage ev)
@@ -111,73 +99,9 @@ namespace Content.Server.GameObjects.EntitySystems
             }
         }
 
-        /// <inheritdoc />
+        protected override void HandleFootsteps(IMoverComponent mover)
-        public override void Shutdown()
         {
-            CommandBinds.Unregister<MoverSystem>();
+            var transform = mover.Owner.Transform;
-            base.Shutdown();
-        }
-
-        /// <inheritdoc />
-        public override void Update(float frameTime)
-        {
-            foreach (var entity in RelevantEntities)
-            {
-                if (_pauseManager.IsEntityPaused(entity))
-                {
-                    continue;
-                }
-                var mover = entity.GetComponent<IMoverComponent>();
-                var physics = entity.GetComponent<PhysicsComponent>();
-                if (entity.TryGetComponent<CollidableComponent>(out var collider))
-                {
-                    UpdateKinematics(entity.Transform, mover, physics, collider);
-                }
-                else
-                {
-                    UpdateKinematics(entity.Transform, mover, physics);
-                }
-            }
-        }
-
-        private void UpdateKinematics(ITransformComponent transform, IMoverComponent mover, PhysicsComponent physics, CollidableComponent collider = null)
-        {
-            if (physics.Controller == null)
-            {
-                // Set up controller
-                physics.SetController<MoverController>();
-            }
-
-            var weightless = !transform.Owner.HasComponent<MovementIgnoreGravityComponent>() &&
-                             _physicsManager.IsWeightless(transform.GridPosition);
-
-            if (weightless && collider != null)
-            {
-                // No gravity: is our entity touching anything?
-                var touching = IsAroundCollider(transform, mover, collider);
-
-                if (!touching)
-                {
-                    return;
-                }
-            }
-
-            if (mover.VelocityDir.LengthSquared < 0.001 || !ActionBlockerSystem.CanMove(mover.Owner) && !weightless)
-            {
-                (physics.Controller as MoverController)?.StopMoving();
-            }
-            else
-            {
-                if (weightless)
-                {
-                    (physics.Controller as MoverController)?.Push(mover.VelocityDir, mover.CurrentPushSpeed);
-                    transform.LocalRotation = mover.VelocityDir.GetDir().ToAngle();
-                    return;
-                }
-                (physics.Controller as MoverController)?.Move(mover.VelocityDir,
-                    mover.Sprinting ? mover.CurrentSprintSpeed : mover.CurrentWalkSpeed);
-                transform.LocalRotation = mover.VelocityDir.GetDir().ToAngle();
-
             // Handle footsteps.
             if (_mapManager.GridExists(mover.LastPosition.GridID))
             {
@@ -196,6 +120,7 @@ namespace Content.Server.GameObjects.EntitySystems
             {
                 distanceNeeded = StepSoundMoveDistanceWalking;
             }
+
             if (mover.StepSoundDistance > distanceNeeded)
             {
                 mover.StepSoundDistance = 0;
@@ -217,78 +142,6 @@ namespace Content.Server.GameObjects.EntitySystems
                 }
             }
         }
-        }
-
-        private bool IsAroundCollider(ITransformComponent transform, IMoverComponent mover, CollidableComponent collider)
-        {
-            foreach (var entity in _entityManager.GetEntitiesInRange(transform.Owner, mover.GrabRange, true))
-            {
-                if (entity == transform.Owner)
-                {
-                    continue; // Don't try to push off of yourself!
-                }
-
-                if (!entity.TryGetComponent<CollidableComponent>(out var otherCollider))
-                {
-                    continue;
-                }
-
-                var touching = ((collider.CollisionMask & otherCollider.CollisionLayer) != 0x0
-                                || (otherCollider.CollisionMask & collider.CollisionLayer) != 0x0) // Ensure collision
-                               && !entity.HasComponent<ItemComponent>(); // This can't be an item
-
-                if (touching)
-                {
-                    return true;
-                }
-            }
-
-            return false;
-        }
-
-        private static void HandleDirChange(ICommonSession session, Direction dir, bool state)
-        {
-            var playerSes = session as IPlayerSession;
-            if (!TryGetAttachedComponent(playerSes, out IMoverComponent moverComp))
-                return;
-
-            var owner = playerSes?.AttachedEntity;
-
-            if (owner != null)
-            {
-                foreach (var comp in owner.GetAllComponents<IRelayMoveInput>())
-                {
-                    comp.MoveInputPressed(playerSes);
-                }
-            }
-
-            moverComp.SetVelocityDirection(dir, state);
-        }
-
-        private static void HandleRunChange(ICommonSession session, bool running)
-        {
-            if (!TryGetAttachedComponent(session as IPlayerSession, out PlayerInputMoverComponent moverComp))
-                return;
-
-            moverComp.Sprinting = running;
-        }
-
-        private static bool TryGetAttachedComponent<T>(IPlayerSession session, out T component)
-            where T : IComponent
-        {
-            component = default;
-
-            var ent = session.AttachedEntity;
-
-            if (ent == null || !ent.IsValid())
-                return false;
-
-            if (!ent.TryGetComponent(out T comp))
-                return false;
-
-            component = comp;
-            return true;
-        }
 
         private void PlayFootstepSound(GridCoordinates coordinates)
         {
@@ -316,12 +169,13 @@ namespace Content.Server.GameObjects.EntitySystems
             else
             {
                 // Walking on a tile.
-                var def = (ContentTileDefinition)_tileDefinitionManager[tile.Tile.TypeId];
+                var def = (ContentTileDefinition) _tileDefinitionManager[tile.Tile.TypeId];
                 if (def.FootstepSounds == null)
                 {
                     // Nothing to play, oh well.
                     return;
                 }
+
                 soundCollectionName = def.FootstepSounds;
             }
 

Content.Server/Interfaces/GameObjects/Components/Movement/IRelayMoveInput.cs

@@ -1,9 +0,0 @@
-using Robust.Server.Interfaces.Player;
-
-namespace Content.Server.Interfaces.GameObjects.Components.Movement
-{
-    public interface IRelayMoveInput
-    {
-        void MoveInputPressed(IPlayerSession session);
-    }
-}

Content.Server/Throw/ThrowHelper.cs

@@ -83,7 +83,7 @@ namespace Content.Server.Throw
                 physComp = thrownEnt.AddComponent<PhysicsComponent>();
 
             var timing = IoCManager.Resolve<IGameTiming>();
-            var spd = throwForce / (1f / timing.TickRate); // acceleration is applied in 1 tick instead of 1 second, scale appropriately
+            var spd = throwForce * 60; // acceleration is applied in 1 tick instead of 1 second, scale appropriately
 
             physComp.SetController<ThrowController>();
             (physComp.Controller as ThrowController)?.StartThrow(angle.ToVec() * spd);

Content.Shared/GameObjects/Components/Mobs/SharedStunnableComponent.cs

@@ -0,0 +1,71 @@
+using System;
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.EntitySystems;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.GameObjects.Components.Mobs
+{
+    public abstract class SharedStunnableComponent : Component, IMoveSpeedModifier, IActionBlocker
+    {
+        public sealed override string Name => "Stunnable";
+        public override uint? NetID => ContentNetIDs.STUNNABLE;
+
+        [ViewVariables] protected float WalkModifierOverride = 0f;
+        [ViewVariables] protected float RunModifierOverride = 0f;
+
+        [ViewVariables] public abstract bool Stunned { get; }
+        [ViewVariables] public abstract bool KnockedDown { get; }
+        [ViewVariables] public abstract bool SlowedDown { get; }
+
+        #region ActionBlockers
+        public bool CanMove() => (!Stunned);
+
+        public bool CanInteract() => (!Stunned);
+
+        public bool CanUse() => (!Stunned);
+
+        public bool CanThrow() => (!Stunned);
+
+        public bool CanSpeak() => true;
+
+        public bool CanDrop() => (!Stunned);
+
+        public bool CanPickup() => (!Stunned);
+
+        public bool CanEmote() => true;
+
+        public bool CanAttack() => (!Stunned);
+
+        public bool CanEquip() => (!Stunned);
+
+        public bool CanUnequip() => (!Stunned);
+        public bool CanChangeDirection() => true;
+        #endregion
+
+        [ViewVariables]
+        public float WalkSpeedModifier => (SlowedDown ? (WalkModifierOverride <= 0f ? 0.5f : WalkModifierOverride) : 1f);
+        [ViewVariables]
+        public float SprintSpeedModifier => (SlowedDown ? (RunModifierOverride <= 0f ? 0.5f : RunModifierOverride) : 1f);
+
+        [Serializable, NetSerializable]
+        protected sealed class StunnableComponentState : ComponentState
+        {
+            public bool Stunned { get; }
+            public bool KnockedDown { get; }
+            public bool SlowedDown { get; }
+            public float WalkModifierOverride { get; }
+            public float RunModifierOverride { get; }
+
+            public StunnableComponentState(bool stunned, bool knockedDown, bool slowedDown, float walkModifierOverride, float runModifierOverride) : base(ContentNetIDs.STUNNABLE)
+            {
+                Stunned = stunned;
+                KnockedDown = knockedDown;
+                SlowedDown = slowedDown;
+                WalkModifierOverride = walkModifierOverride;
+                RunModifierOverride = runModifierOverride;
+            }
+        }
+    }
+}

Content.Shared/GameObjects/Components/Movement/IMoverComponent.cs

@@ -1,9 +1,8 @@
-using Content.Server.GameObjects.Components.Movement;
+using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Maths;
 
-namespace Content.Server.Interfaces.GameObjects.Components.Movement
+namespace Content.Shared.GameObjects.Components.Movement
 {
     // Does nothing except ensure uniqueness between mover components.
     // There can only be one.
@@ -33,12 +32,12 @@ namespace Content.Server.Interfaces.GameObjects.Components.Movement
         /// <summary>
         ///     Is the entity Sprinting (running)?
         /// </summary>
-        bool Sprinting { get; set; }
+        bool Sprinting { get; }
 
         /// <summary>
         ///     Calculated linear velocity direction of the entity.
         /// </summary>
-        Vector2 VelocityDir { get; }
+        (Vector2 walking, Vector2 sprinting) VelocityDir { get; }
 
         GridCoordinates LastPosition { get; set; }
 
@@ -50,7 +49,11 @@ namespace Content.Server.Interfaces.GameObjects.Components.Movement
         ///     opposite directions will cancel each other out, resulting in no direction.
         /// </summary>
         /// <param name="direction">Direction to toggle.</param>
+        /// <param name="subTick"></param>
         /// <param name="enabled">If the direction is active.</param>
-        void SetVelocityDirection(Direction direction, bool enabled);
+        void SetVelocityDirection(Direction direction, ushort subTick, bool enabled);
+
+        void SetSprinting(ushort subTick, bool enabled);
+
     }
 }

Content.Shared/GameObjects/Components/Movement/IRelayMoveInput.cs

@@ -0,0 +1,9 @@
+using Robust.Shared.Players;
+
+namespace Content.Shared.GameObjects.Components.Movement
+{
+    public interface IRelayMoveInput
+    {
+        void MoveInputPressed(ICommonSession session);
+    }
+}

Content.Shared/GameObjects/Components/Movement/MovementSpeedModifierComponent.cs

@@ -1,9 +1,8 @@
-
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
-namespace Content.Server.GameObjects.Components.Movement
+namespace Content.Shared.GameObjects.Components.Movement
 {
     [RegisterComponent]
     public class MovementSpeedModifierComponent : Component
@@ -85,7 +84,7 @@ namespace Content.Server.GameObjects.Components.Movement
         }
     }
 
-    interface IMoveSpeedModifier
+    public interface IMoveSpeedModifier
     {
         float WalkSpeedModifier { get; }
         float SprintSpeedModifier { get; }

Content.Shared/GameObjects/Components/Movement/SharedPlayerInputMoverComponent.cs

@@ -0,0 +1,287 @@
+using System;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.Configuration;
+using Robust.Shared.Interfaces.Timing;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+using Robust.Shared.Serialization;
+using Robust.Shared.Timing;
+using Robust.Shared.ViewVariables;
+
+#nullable enable
+
+namespace Content.Shared.GameObjects.Components.Movement
+{
+    public abstract class SharedPlayerInputMoverComponent : Component, IMoverComponent
+    {
+        // This class has to be able to handle server TPS being lower than client FPS.
+        // While still having perfectly responsive movement client side.
+        // We do this by keeping track of the exact sub-tick values that inputs are pressed on the client,
+        // and then building a total movement vector based on those sub-tick steps.
+        //
+        // We keep track of the last sub-tick a movement input came in,
+        // Then when a new input comes in, we calculate the fraction of the tick the LAST input was active for
+        //   (new sub-tick - last sub-tick)
+        // and then add to the total-this-tick movement vector
+        // by multiplying that fraction by the movement direction for the last input.
+        // This allows us to incrementally build the movement vector for the current tick,
+        // without having to keep track of some kind of list of inputs and calculating it later.
+        //
+        // We have to keep track of a separate movement vector for walking and sprinting,
+        // since we don't actually know our current movement speed while processing inputs.
+        // We change which vector we write into based on whether we were sprinting after the previous input.
+        //   (well maybe we do but the code is designed such that MoverSystem applies movement speed)
+        //   (and I'm not changing that)
+
+        [Dependency] private readonly IConfigurationManager _configurationManager = default!;
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        public sealed override string Name => "PlayerInputMover";
+        public sealed override uint? NetID => ContentNetIDs.PLAYER_INPUT_MOVER;
+
+        private GameTick _lastInputTick;
+        private ushort _lastInputSubTick;
+        private Vector2 _curTickWalkMovement;
+        private Vector2 _curTickSprintMovement;
+
+        private MoveButtons _heldMoveButtons = MoveButtons.None;
+
+        public float CurrentWalkSpeed
+        {
+            get
+            {
+                if (Owner.TryGetComponent(out MovementSpeedModifierComponent component))
+                {
+                    return component.CurrentWalkSpeed;
+                }
+
+                return MovementSpeedModifierComponent.DefaultBaseWalkSpeed;
+            }
+        }
+
+        public float CurrentSprintSpeed
+        {
+            get
+            {
+                if (Owner.TryGetComponent(out MovementSpeedModifierComponent component))
+                {
+                    return component.CurrentSprintSpeed;
+                }
+
+                return MovementSpeedModifierComponent.DefaultBaseSprintSpeed;
+            }
+        }
+
+        public float CurrentPushSpeed => 5;
+        public float GrabRange => 0.2f;
+        public bool Sprinting => !_heldMoveButtons.HasFlag(MoveButtons.Sprint);
+
+        /// <summary>
+        ///     Calculated linear velocity direction of the entity.
+        /// </summary>
+        [ViewVariables]
+        public (Vector2 walking, Vector2 sprinting) VelocityDir
+        {
+            get
+            {
+                if (!_gameTiming.InSimulation)
+                {
+                    // Outside of simulation we'll be running client predicted movement per-frame.
+                    // So return a full-length vector as if it's a full tick.
+                    // Physics system will have the correct time step anyways.
+                    var immediateDir = DirVecForButtons(_heldMoveButtons);
+                    return Sprinting ? (Vector2.Zero, immediateDir) : (immediateDir, Vector2.Zero);
+                }
+
+                Vector2 walk;
+                Vector2 sprint;
+                float remainingFraction;
+
+                if (_gameTiming.CurTick > _lastInputTick)
+                {
+                    walk = Vector2.Zero;
+                    sprint = Vector2.Zero;
+                    remainingFraction = 1;
+                }
+                else
+                {
+                    walk = _curTickWalkMovement;
+                    sprint = _curTickSprintMovement;
+                    remainingFraction = (ushort.MaxValue - _lastInputSubTick) / (float) ushort.MaxValue;
+                }
+
+                var curDir = DirVecForButtons(_heldMoveButtons) * remainingFraction;
+
+                if (Sprinting)
+                {
+                    sprint += curDir;
+                }
+                else
+                {
+                    walk += curDir;
+                }
+
+                // Logger.Info($"{curDir}{walk}{sprint}");
+                return (walk, sprint);
+            }
+        }
+
+        public abstract GridCoordinates LastPosition { get; set; }
+        public abstract float StepSoundDistance { get; set; }
+
+        /// <summary>
+        ///     Whether or not the player can move diagonally.
+        /// </summary>
+        [ViewVariables]
+        public bool DiagonalMovementEnabled => _configurationManager.GetCVar<bool>("game.diagonalmovement");
+
+        /// <inheritdoc />
+        public override void OnAdd()
+        {
+            // This component requires that the entity has a PhysicsComponent.
+            if (!Owner.HasComponent<SharedPhysicsComponent>())
+                Logger.Error(
+                    $"[ECS] {Owner.Prototype?.Name} - {nameof(SharedPlayerInputMoverComponent)} requires" +
+                    $" {nameof(SharedPhysicsComponent)}. ");
+
+            base.OnAdd();
+        }
+
+
+        /// <summary>
+        ///     Toggles one of the four cardinal directions. Each of the four directions are
+        ///     composed into a single direction vector, <see cref="VelocityDir"/>. Enabling
+        ///     opposite directions will cancel each other out, resulting in no direction.
+        /// </summary>
+        /// <param name="direction">Direction to toggle.</param>
+        /// <param name="subTick"></param>
+        /// <param name="enabled">If the direction is active.</param>
+        public void SetVelocityDirection(Direction direction, ushort subTick, bool enabled)
+        {
+            // Logger.Info($"[{_gameTiming.CurTick}/{subTick}] {direction}: {enabled}");
+
+            var bit = direction switch
+            {
+                Direction.East => MoveButtons.Right,
+                Direction.North => MoveButtons.Up,
+                Direction.West => MoveButtons.Left,
+                Direction.South => MoveButtons.Down,
+                _ => throw new ArgumentException(nameof(direction))
+            };
+
+            SetMoveInput(subTick, enabled, bit);
+        }
+
+        private void SetMoveInput(ushort subTick, bool enabled, MoveButtons bit)
+        {
+            // Modifies held state of a movement button at a certain sub tick and updates current tick movement vectors.
+
+            if (_gameTiming.CurTick > _lastInputTick)
+            {
+                _curTickWalkMovement = Vector2.Zero;
+                _curTickSprintMovement = Vector2.Zero;
+                _lastInputTick = _gameTiming.CurTick;
+                _lastInputSubTick = 0;
+            }
+
+            var fraction = (subTick - _lastInputSubTick) / (float) ushort.MaxValue;
+
+            ref var lastMoveAmount = ref Sprinting ? ref _curTickSprintMovement : ref _curTickWalkMovement;
+
+            lastMoveAmount += DirVecForButtons(_heldMoveButtons) * fraction;
+
+            if (enabled)
+            {
+                _heldMoveButtons |= bit;
+            }
+            else
+            {
+                _heldMoveButtons &= ~bit;
+            }
+
+            _lastInputSubTick = subTick;
+
+            Dirty();
+        }
+
+        public void SetSprinting(ushort subTick, bool enabled)
+        {
+            // Logger.Info($"[{_gameTiming.CurTick}/{subTick}] Sprint: {enabled}");
+
+            SetMoveInput(subTick, enabled, MoveButtons.Sprint);
+        }
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (curState is MoverComponentState state)
+            {
+                _heldMoveButtons = state.Buttons;
+                _lastInputTick = GameTick.Zero;
+                _lastInputSubTick = 0;
+            }
+        }
+
+        public override ComponentState GetComponentState()
+        {
+            return new MoverComponentState(_heldMoveButtons);
+        }
+
+        /// <summary>
+        ///     Retrieves the normalized direction vector for a specified combination of movement keys.
+        /// </summary>
+        private Vector2 DirVecForButtons(MoveButtons buttons)
+        {
+            // key directions are in screen coordinates
+            // _moveDir is in world coordinates
+            // if the camera is moved, this needs to be changed
+
+            var x = 0;
+            x -= buttons.HasFlag(MoveButtons.Left) ? 1 : 0;
+            x += buttons.HasFlag(MoveButtons.Right) ? 1 : 0;
+
+            var y = 0;
+            if (DiagonalMovementEnabled || x == 0)
+            {
+                y -= buttons.HasFlag(MoveButtons.Down) ? 1 : 0;
+                y += buttons.HasFlag(MoveButtons.Up) ? 1 : 0;
+            }
+
+            var vec = new Vector2(x, y);
+
+            // can't normalize zero length vector
+            if (vec.LengthSquared > 1.0e-6)
+            {
+                // Normalize so that diagonals aren't faster or something.
+                vec = vec.Normalized;
+            }
+
+            return vec;
+        }
+
+        [Serializable, NetSerializable]
+        private sealed class MoverComponentState : ComponentState
+        {
+            public MoveButtons Buttons { get; }
+
+            public MoverComponentState(MoveButtons buttons) : base(ContentNetIDs
+                .PLAYER_INPUT_MOVER)
+            {
+                Buttons = buttons;
+            }
+        }
+
+        [Flags]
+        private enum MoveButtons : byte
+        {
+            None = 0,
+            Up = 1,
+            Down = 2,
+            Left = 4,
+            Right = 8,
+            Sprint = 16,
+        }
+    }
+}

Content.Shared/GameObjects/Components/Nutrition/SharedHungerComponent.cs

@@ -0,0 +1,60 @@
+using System;
+using Content.Shared.GameObjects.Components.Movement;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Nutrition
+{
+    public abstract class SharedHungerComponent : Component, IMoveSpeedModifier
+    {
+        public sealed override string Name => "Hunger";
+
+        public sealed override uint? NetID => ContentNetIDs.HUNGER;
+
+        public abstract HungerThreshold CurrentHungerThreshold { get; }
+
+
+        float IMoveSpeedModifier.WalkSpeedModifier
+        {
+            get
+            {
+                if (CurrentHungerThreshold == HungerThreshold.Starving)
+                {
+                    return 0.5f;
+                }
+                return 1.0f;
+            }
+        }
+        float IMoveSpeedModifier.SprintSpeedModifier
+        {
+            get
+            {
+                if (CurrentHungerThreshold == HungerThreshold.Starving)
+                {
+                    return 0.5f;
+                }
+                return 1.0f;
+            }
+        }
+
+        [Serializable, NetSerializable]
+        protected sealed class HungerComponentState : ComponentState
+        {
+            public HungerThreshold CurrentThreshold { get; }
+
+            public HungerComponentState(HungerThreshold currentThreshold) : base(ContentNetIDs.HUNGER)
+            {
+                CurrentThreshold = currentThreshold;
+            }
+        }
+    }
+
+    public enum HungerThreshold : byte
+    {
+        Overfed,
+        Okay,
+        Peckish,
+        Starving,
+        Dead,
+    }
+}

Content.Shared/GameObjects/Components/Nutrition/SharedThirstComponent.cs

@@ -0,0 +1,61 @@
+using System;
+using Content.Shared.GameObjects.Components.Movement;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Nutrition
+{
+    public abstract class SharedThirstComponent : Component, IMoveSpeedModifier
+    {
+        public sealed override string Name => "Thirst";
+
+        public sealed override uint? NetID => ContentNetIDs.THIRST;
+
+        public abstract ThirstThreshold CurrentThirstThreshold { get; }
+
+        float IMoveSpeedModifier.SprintSpeedModifier
+        {
+            get
+            {
+                if (CurrentThirstThreshold == ThirstThreshold.Parched)
+                {
+                    return 0.25f;
+                }
+                return 1.0f;
+            }
+        }
+        float IMoveSpeedModifier.WalkSpeedModifier
+        {
+            get
+            {
+                if (CurrentThirstThreshold == ThirstThreshold.Parched)
+                {
+                    return 0.5f;
+                }
+                return 1.0f;
+            }
+        }
+
+        [Serializable, NetSerializable]
+        protected sealed class ThirstComponentState : ComponentState
+        {
+            public ThirstThreshold CurrentThreshold { get; }
+
+            public ThirstComponentState(ThirstThreshold currentThreshold) : base(ContentNetIDs.THIRST)
+            {
+                CurrentThreshold = currentThreshold;
+            }
+        }
+
+    }
+
+    public enum ThirstThreshold : byte
+    {
+        // Hydrohomies
+        OverHydrated,
+        Okay,
+        Thirsty,
+        Parched,
+        Dead,
+    }
+}

Content.Shared/GameObjects/Components/Observer/SharedGhostComponent.cs

@@ -1,13 +1,22 @@
 using System;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
 namespace Content.Shared.GameObjects.Components.Observer
 {
-    public class SharedGhostComponent : Component
+    public class SharedGhostComponent : Component, IActionBlocker
     {
         public override string Name => "Ghost";
         public override uint? NetID => ContentNetIDs.GHOST;
+
+        public bool CanInteract() => false;
+        public bool CanUse() => false;
+        public bool CanThrow() => false;
+        public bool CanDrop() => false;
+        public bool CanPickup() => false;
+        public bool CanEmote() => false;
+        public bool CanAttack() => false;
     }
 
     [Serializable, NetSerializable]

Content.Shared/GameObjects/ContentNetIDs.cs

@@ -50,6 +50,10 @@
         public const uint PDA = 1044;
         public const uint PATHFINDER_DEBUG = 1045;
         public const uint AI_DEBUG = 1046;
+        public const uint PLAYER_INPUT_MOVER = 1047;
+        public const uint STUNNABLE = 1048;
+        public const uint HUNGER = 1049;
+        public const uint THIRST = 1050;
 
         // Net IDs for integration tests.
         public const uint PREDICTION_TEST = 10001;

Content.Shared/GameObjects/EntitySystems/ActionBlockerSystem.cs

@@ -1,7 +1,7 @@
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 
-namespace Content.Server.GameObjects.EntitySystems
+namespace Content.Shared.GameObjects.EntitySystems
 {
     public interface IActionBlocker
     {

Content.Shared/GameObjects/EntitySystems/SharedMoverSystem.cs

@@ -0,0 +1,235 @@
+using System.Diagnostics.CodeAnalysis;
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.Physics;
+using Robust.Shared.Configuration;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Input;
+using Robust.Shared.Input.Binding;
+using Robust.Shared.Interfaces.Configuration;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.Physics;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+using Robust.Shared.Players;
+using Robust.Shared.Prototypes;
+
+#nullable enable
+
+namespace Content.Shared.GameObjects.EntitySystems
+{
+    public abstract class SharedMoverSystem : EntitySystem
+    {
+        // [Dependency] private readonly IPauseManager _pauseManager;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+        [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager = default!;
+        [Dependency] private readonly IMapManager _mapManager = default!;
+        [Dependency] private readonly IRobustRandom _robustRandom = default!;
+        [Dependency] private readonly IEntityManager _entityManager = default!;
+        [Dependency] private readonly IPhysicsManager _physicsManager = default!;
+        [Dependency] private readonly IConfigurationManager _configurationManager = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            EntityQuery = new TypeEntityQuery(typeof(IMoverComponent));
+
+            var moveUpCmdHandler = new MoverDirInputCmdHandler(Direction.North);
+            var moveLeftCmdHandler = new MoverDirInputCmdHandler(Direction.West);
+            var moveRightCmdHandler = new MoverDirInputCmdHandler(Direction.East);
+            var moveDownCmdHandler = new MoverDirInputCmdHandler(Direction.South);
+
+            CommandBinds.Builder
+                .Bind(EngineKeyFunctions.MoveUp, moveUpCmdHandler)
+                .Bind(EngineKeyFunctions.MoveLeft, moveLeftCmdHandler)
+                .Bind(EngineKeyFunctions.MoveRight, moveRightCmdHandler)
+                .Bind(EngineKeyFunctions.MoveDown, moveDownCmdHandler)
+                .Bind(EngineKeyFunctions.Run, new SprintInputCmdHandler())
+                .Register<SharedMoverSystem>();
+
+            _configurationManager.RegisterCVar("game.diagonalmovement", true, CVar.ARCHIVE);
+        }
+
+        /// <inheritdoc />
+        public override void Shutdown()
+        {
+            CommandBinds.Unregister<SharedMoverSystem>();
+            base.Shutdown();
+        }
+
+
+        protected void UpdateKinematics(ITransformComponent transform, IMoverComponent mover, SharedPhysicsComponent physics,
+            CollidableComponent? collider = null)
+        {
+            if (physics.Controller == null)
+            {
+                // Set up controller
+                SetController(physics);
+            }
+
+            var weightless = !transform.Owner.HasComponent<MovementIgnoreGravityComponent>() &&
+                             _physicsManager.IsWeightless(transform.GridPosition);
+
+            if (weightless && collider != null)
+            {
+                // No gravity: is our entity touching anything?
+                var touching = IsAroundCollider(transform, mover, collider);
+
+                if (!touching)
+                {
+                    return;
+                }
+            }
+
+            // TODO: movement check.
+            var (walkDir, sprintDir) = mover.VelocityDir;
+            var combined = walkDir + sprintDir;
+            if (combined.LengthSquared < 0.001 || !ActionBlockerSystem.CanMove(mover.Owner) && !weightless)
+            {
+                (physics.Controller as MoverController)?.StopMoving();
+            }
+            else
+            {
+                //Console.WriteLine($"{IoCManager.Resolve<IGameTiming>().TickStamp}: {combined}");
+
+                if (weightless)
+                {
+                    (physics.Controller as MoverController)?.Push(combined, mover.CurrentPushSpeed);
+                    transform.LocalRotation = walkDir.GetDir().ToAngle();
+                    return;
+                }
+
+                var total = walkDir * mover.CurrentWalkSpeed + sprintDir * mover.CurrentSprintSpeed;
+                //Console.WriteLine($"{walkDir} ({mover.CurrentWalkSpeed}) + {sprintDir} ({mover.CurrentSprintSpeed}): {total}");
+
+                (physics.Controller as MoverController)?.Move(total, 1);
+                transform.LocalRotation = total.GetDir().ToAngle();
+
+                HandleFootsteps(mover);
+            }
+        }
+
+        protected virtual void HandleFootsteps(IMoverComponent mover)
+        {
+
+        }
+
+        protected abstract void SetController(SharedPhysicsComponent physics);
+
+        private bool IsAroundCollider(ITransformComponent transform, IMoverComponent mover,
+            CollidableComponent collider)
+        {
+            foreach (var entity in _entityManager.GetEntitiesInRange(transform.Owner, mover.GrabRange, true))
+            {
+                if (entity == transform.Owner)
+                {
+                    continue; // Don't try to push off of yourself!
+                }
+
+                if (!entity.TryGetComponent<CollidableComponent>(out var otherCollider))
+                {
+                    continue;
+                }
+
+                // TODO: Item check.
+                var touching = ((collider.CollisionMask & otherCollider.CollisionLayer) != 0x0
+                                || (otherCollider.CollisionMask & collider.CollisionLayer) != 0x0) // Ensure collision
+                               && true; // !entity.HasComponent<ItemComponent>(); // This can't be an item
+
+                if (touching)
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+
+        private static void HandleDirChange(ICommonSession? session, Direction dir, ushort subTick, bool state)
+        {
+            if (!TryGetAttachedComponent<IMoverComponent>(session, out var moverComp))
+                return;
+
+            var owner = session?.AttachedEntity;
+
+            if (owner != null)
+            {
+                foreach (var comp in owner.GetAllComponents<IRelayMoveInput>())
+                {
+                    comp.MoveInputPressed(session);
+                }
+            }
+
+            moverComp.SetVelocityDirection(dir, subTick, state);
+        }
+
+        private static void HandleRunChange(ICommonSession? session, ushort subTick, bool running)
+        {
+            if (!TryGetAttachedComponent<IMoverComponent>(session, out var moverComp))
+            {
+                return;
+            }
+
+            moverComp.SetSprinting(subTick, running);
+        }
+
+        private static bool TryGetAttachedComponent<T>(ICommonSession? session, [MaybeNullWhen(false)] out T component)
+            where T : IComponent
+        {
+            component = default;
+
+            var ent = session?.AttachedEntity;
+
+            if (ent == null || !ent.IsValid())
+                return false;
+
+            if (!ent.TryGetComponent(out T comp))
+                return false;
+
+            component = comp;
+            return true;
+        }
+
+        private sealed class MoverDirInputCmdHandler : InputCmdHandler
+        {
+            private readonly Direction _dir;
+
+            public MoverDirInputCmdHandler(Direction dir)
+            {
+                _dir = dir;
+            }
+
+            public override bool HandleCmdMessage(ICommonSession? session, InputCmdMessage message)
+            {
+                if (!(message is FullInputCmdMessage full))
+                {
+                    return false;
+                }
+
+                HandleDirChange(session, _dir, message.SubTick, full.State == BoundKeyState.Down);
+                return false;
+            }
+        }
+
+        private sealed class SprintInputCmdHandler : InputCmdHandler
+        {
+            public override bool HandleCmdMessage(ICommonSession? session, InputCmdMessage message)
+            {
+                if (!(message is FullInputCmdMessage full))
+                {
+                    return false;
+                }
+
+                HandleRunChange(session, full.SubTick, full.State == BoundKeyState.Down);
+                return false;
+            }
+        }
+    }
+}

Content.Shared/Physics/MoverController.cs

@@ -30,7 +30,7 @@ namespace Content.Shared.Physics
         public void Move(Vector2 velocityDirection, float speed)
         {
             if (!_component.Owner.HasComponent<MovementIgnoreGravityComponent>() && IoCManager
-                .Resolve<IPhysicsManager>().IsWeightless(_component.Owner.Transform.GridPosition)) return;
+                .Resolve<IPhysicsManager>().IsWeightless(_component.Owner.Transform.GridPosition) && false) return;
             Push(velocityDirection, speed);
         }
 

Resources/Prototypes/Tiles/floors.yml

@@ -143,7 +143,7 @@
   is_subfloor: false
   can_crowbar: true
   footstep_sounds: footstep_floor
-  friction: 0.35
+  #friction: 0.35
   item_drop: FloorTileItemSteel
 
 - type: tile