Properly destroy brush model child game objects when clearing an entity's model. Fixes explosive barrels not disappearing when blown up.

Assets/Scripts/Game/Entity.cs

@@ -65,8 +65,10 @@ public class Entity
         }
         meshRenderer.enabled = false;
         
-        // TODO: not sure if this is the right way to unlink world sub-models
-        gameObject.transform.DetachChildren();
+        for (int child = 0; child < gameObject.transform.childCount; ++child)
+        {
+            Object.Destroy(gameObject.transform.GetChild(child).gameObject);
+        }
     }
 
     public void SetAliasModel(AliasModel model)