Healing component and Medkit (#143)

Medkit to heal yourself and your buddy
known issues:
- [ ] it doesn't restore screen effects that happens when health status go into crit and dead

Content.Server/Content.Server.csproj

@@ -141,6 +141,7 @@
     <Compile Include="GameObjects\Components\Power\PowerDebugTool.cs" />
     <Compile Include="ServerNotifyManager.cs" />
     <Compile Include="StatusShell.cs" />
+    <Compile Include="GameObjects\Components\Healing\HealingComponent.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Content.Shared\Content.Shared.csproj">
@@ -183,4 +184,7 @@
     <Compile Include="GameObjects\Components\Construction\ConstructorComponent.cs" />
     <Compile Include="GameObjects\Components\Construction\ConstructionComponent.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="GameObjects\Components\Healing\" />
+  </ItemGroup>
 </Project>

Content.Server/EntryPoint.cs

@@ -102,6 +102,8 @@ namespace Content.Server
             factory.Register<ThrownItemComponent>();
             factory.Register<MeleeWeaponComponent>();
 
+            factory.Register<HealingComponent>();
+
             factory.Register<HandheldLightComponent>();
 
             factory.Register<ServerStorageComponent>();

Content.Server/GameObjects/Components/Healing/HealingComponent.cs

@@ -0,0 +1,64 @@
+using System;
+using SS14.Shared.GameObjects;
+using Content.Server.GameObjects.EntitySystems;
+using SS14.Shared.Interfaces.GameObjects;
+using SS14.Shared.Map;
+using SS14.Shared.IoC;
+using SS14.Server.GameObjects;
+using SS14.Shared.Maths;
+using SS14.Server.Interfaces.GameObjects;
+using SS14.Shared.Interfaces.Timing;
+using SS14.Shared.GameObjects.EntitySystemMessages;
+using SS14.Shared.Serialization;
+using SS14.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components.Weapon.Melee
+{
+    public class HealingComponent : Component, IAfterAttack, IUse
+    {
+        public override string Name => "Healing";
+
+        public int Heal = 100;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref Heal, "heal", 100);
+        }
+
+        void IAfterAttack.Afterattack(IEntity user, GridCoordinates clicklocation, IEntity attacked)
+        {
+            if (attacked == null)
+            {
+                return;
+            }
+            if (attacked.TryGetComponent(out DamageableComponent damagecomponent))
+            {
+                damagecomponent.TakeHealing(DamageType.Brute, Heal);
+                DropAndDelete(user);
+            }
+        }
+
+        bool IUse.UseEntity(IEntity user)
+        {
+            if (user.TryGetComponent(out DamageableComponent damagecomponent))
+            {
+                damagecomponent.TakeHealing(DamageType.Brute, Heal);
+                DropAndDelete(user);
+                return false;
+            }
+            return false;
+        }
+
+        void DropAndDelete(IEntity user)
+        {
+            if(user.TryGetComponent(out HandsComponent handscomponent))
+            {
+                handscomponent.Drop(Owner);
+                Owner.Delete();
+            }
+        }
+    }
+}

Content.Server/GameObjects/Components/Mobs/DamageThresholdTemplates/HumanTemplate.cs

@@ -11,6 +11,7 @@ namespace Content.Server.GameObjects
 
         public override List<(DamageType, int, ThresholdType)> AllowedStates => new List<(DamageType, int, ThresholdType)>()
         {
+            (DamageType.Total, critvalue-1, ThresholdType.None),
             (DamageType.Total, critvalue, ThresholdType.Critical),
             (DamageType.Total, 300, ThresholdType.Death),
         };

Resources/Maps/stationstation.yml

@@ -298,13 +298,13 @@ entities:
     pos: -1.984375,-4.484375
     rot: -1.570796 rad
     type: Transform
-- type: medkit_r
+- type: Medkit
   components:
   - grid: 0
     pos: -0.859375,-3.921875
     rot: -1.570796 rad
     type: Transform
-- type: medkit_r
+- type: Medkit
   components:
   - grid: 0
     pos: -0.921875,-4.640625

Resources/Prototypes/Entities/Medkit.yml

@@ -1,11 +1,13 @@
 - type: entity
-  id: medkit_r
   name: Medkit
+  parent: BaseItem
+  id: Medkit
   components:
-  - type: Clickable
   - type: Sprite
     texture: Objects/medkit_r.png
-
   - type: Icon
     texture: Objects/medkit_r.png
-
+  - type: Healing
+    heal: 100
+  - type: Item
+    Size: 24