Add CanAttack to IActionBlocker, prevent using guns when dead (#769)

Content.Server/GameObjects/EntitySystems/ActionBlockerSystem.cs

@@ -20,6 +20,8 @@ namespace Content.Server.GameObjects.EntitySystems
         bool CanPickup();
 
         bool CanEmote();
+
+        bool CanAttack();
     }
 
     public class ActionBlockerSystem : EntitySystem
@@ -105,5 +107,17 @@ namespace Content.Server.GameObjects.EntitySystems
 
             return canemote;
         }
+
+        public static bool CanAttack(IEntity entity)
+        {
+            bool canattack = true;
+
+            foreach (var actionblockercomponents in entity.GetAllComponents<IActionBlocker>())
+            {
+                canattack &= actionblockercomponents.CanAttack();
+            }
+
+            return canattack;
+        }
     }
 }

Content.Server/GameObjects/EntitySystems/Click/InteractionSystem.cs

@@ -853,7 +853,7 @@ namespace Content.Server.GameObjects.EntitySystems
             var item = hands.GetActiveHand?.Owner;
 
             // TODO: If item is null we need some kinda unarmed combat.
-            if (!ActionBlockerSystem.CanInteract(player) || item == null)
+            if (!ActionBlockerSystem.CanAttack(player) || item == null)
             {
                 return;
             }