Feature/1754 kill player on body parts missing (#2014)

* Moved the uplink creation code to the PresetSuspicion.Start method to ensure uplink created when we give the traitor role
Moved the starting TC balance to cvars

* Added isVital flag for body parts
Automatically killing creature if last vital body part removed
Marked head as vital part

Content.Server/Body/BodyPart.cs

@@ -152,6 +152,13 @@ namespace Content.Server.Body
         [ViewVariables]
         public IReadOnlyCollection<IMechanism> Mechanisms => _mechanisms;
 
+        /// <summary>
+        /// Represents if body part is vital for creature.
+        /// If the last vital body part is removed creature dies
+        /// </summary>
+        [ViewVariables]
+        public bool IsVital { get; private set; }
+
         /// <summary>
         ///     This method is called by
         ///     <see cref="IBodyManagerComponent.PreMetabolism"/> before
@@ -451,6 +458,7 @@ namespace Content.Server.Body
             RSIPath = data.RSIPath;
             RSIState = data.RSIState;
             MaxDurability = data.Durability;
+            IsVital = data.IsVital;
 
             if (!prototypeManager.TryIndex(data.DamageContainerPresetId,
                 out DamageContainerPrototype damageContainerData))

Content.Server/Body/IBodyPart.cs

@@ -82,6 +82,11 @@ namespace Content.Server.Body
         // TODO: SpriteComponent rework
         public Color? RSIColor { get; set; }
 
+        /// <summary>
+        /// If body part is vital
+        /// </summary>
+        public bool IsVital { get; }
+
         bool HasProperty<T>() where T : BodyPartProperty;
 
         bool HasProperty(Type type);

Content.Server/GameObjects/Components/Body/BodyManagerComponent.cs

@@ -279,16 +279,11 @@ namespace Content.Server.GameObjects.Components.Body
 
             if (speedSum <= 0.001f || _activeLegs.Count <= 0)
             {
-                // Case: no way of moving. Fall down.
-                EntitySystem.Get<StandingStateSystem>().Down(Owner);
                 playerMover.BaseWalkSpeed = 0.8f;
                 playerMover.BaseSprintSpeed = 2.0f;
             }
             else
             {
-                // Case: have at least one leg. Set move speed.
-                EntitySystem.Get<StandingStateSystem>().Standing(Owner);
-
                 // Extra legs stack diminishingly.
                 // Final speed = speed sum/(leg count-log4(leg count))
                 playerMover.BaseWalkSpeed =
@@ -568,28 +563,10 @@ namespace Content.Server.GameObjects.Components.Body
         {
             DebugTools.AssertNotNull(part);
 
-            if (!_parts.ContainsValue(part))
-            {
-                return;
-            }
+            var slotName = _parts.FirstOrDefault(x => x.Value == part).Key;
+            if (string.IsNullOrEmpty(slotName)) return;
+            DisconnectBodyPart(slotName, dropEntity);
 
-            var slotName = Parts.FirstOrDefault(x => x.Value == part).Key;
-            RemoveBodyPart(slotName, dropEntity);
-
-            // Call disconnect on all limbs that were hanging off this limb
-            if (TryGetBodyPartConnections(slotName, out List<string> connections))
-            {
-                // TODO: Optimize
-                foreach (var connectionName in connections)
-                {
-                    if (TryGetBodyPart(connectionName, out var result) && !ConnectedToCenterPart(result))
-                    {
-                        DisconnectBodyPart(connectionName, dropEntity);
-                    }
-                }
-            }
-
-            OnBodyChanged();
         }
 
         /// <summary>
@@ -757,6 +734,21 @@ namespace Content.Server.GameObjects.Components.Body
                 SendNetworkMessage(mechanismMessage);
             }
 
+            if (CurrentDamageState == DamageState.Dead) return true;
+
+            // creadth: fall down if no legs
+            if (part.PartType == BodyPartType.Leg && Parts.Count(x => x.Value.PartType == BodyPartType.Leg) == 0)
+            {
+                EntitySystem.Get<StandingStateSystem>().Down(Owner);
+            }
+
+            // creadth: immediately kill entity if last vital part removed
+            if (part.IsVital && Parts.Count(x => x.Value.PartType == part.PartType) == 0)
+            {
+                CurrentDamageState = DamageState.Dead;
+                ForceHealthChangedEvent();
+            }
+
             return true;
         }
 

Content.Shared/Body/Part/BodyPartPrototype.cs

@@ -33,6 +33,8 @@ namespace Content.Shared.Body.Part
         private string _rsiState;
         private int _size;
         private string _surgeryDataName;
+        private bool _isVital;
+
 
         [ViewVariables] public string Name => _name;
 
@@ -66,6 +68,8 @@ namespace Content.Shared.Body.Part
 
         [ViewVariables] public string ID => _id;
 
+        [ViewVariables] public bool IsVital => _isVital;
+
         public virtual void LoadFrom(YamlMappingNode mapping)
         {
             var serializer = YamlObjectSerializer.NewReader(mapping);
@@ -86,6 +90,7 @@ namespace Content.Shared.Body.Part
             serializer.DataField(ref _resistanceSetId, "resistances", string.Empty);
             serializer.DataField(ref _properties, "properties", new List<IExposeData>());
             serializer.DataField(ref _mechanisms, "mechanisms", new List<string>());
+            serializer.DataField(ref _isVital, "isVital", false);
 
             foreach (var property in _properties)
             {

Content.Shared/GameObjects/Components/Damage/DamageableComponent.cs

@@ -366,6 +366,8 @@ namespace Content.Shared.GameObjects.Components.Damage
         protected virtual void EnterState(DamageState state) { }
 
         protected virtual void OnHealthChanged(HealthChangedEventArgs e)
+        {
+            if (CurrentDamageState != DamageState.Dead)
             {
                 if (DeadThreshold != -1 && TotalDamage > DeadThreshold)
                 {
@@ -379,6 +381,7 @@ namespace Content.Shared.GameObjects.Components.Damage
                 {
                     CurrentDamageState = DamageState.Alive;
                 }
+            }
 
             Owner.EntityManager.EventBus.RaiseEvent(EventSource.Local, e);
             HealthChangedEvent?.Invoke(e);

Resources/Prototypes/Body/Parts/humanoid_parts.yml

@@ -33,6 +33,7 @@
   damageContainer: biologicalDamageContainer
   resistances: defaultResistances
   surgeryDataType: Content.Server.Body.Surgery.BiologicalSurgeryData
+  isVital: true
   mechanisms:
   - mechanism.Brain.BasicHuman
   - mechanism.Eyes.BasicHuman

Resources/Prototypes/Entities/Mobs/Species/human.yml

@@ -112,8 +112,6 @@
       sprite: Mobs/Customization/human_hair.rsi
     - map: ["enum.Slots.MASK"]
     - map: ["enum.Slots.HEAD"]
-    - map: ["hand-left"]
-    - map: ["hand-right"]
   - type: Icon
     sprite: Mobs/Species/Human/parts.rsi
     state: full