Optimized editor. Correctly checks for same existing prefab at position and...

Optimized editor. Correctly checks for same existing prefab at position and dosn't create new instance if the same thing already exists there.

Assets/Scripts/MapEditor/MapEditor.cs

@@ -92,18 +92,24 @@ public class MapEditor : MonoBehaviour
 
             if(Tile != null)
             {
-                GameObject go = (GameObject)GameObject.Instantiate(Tile, new Vector3(pos.x, pos.y, Layer), Quaternion.identity);
-                go = PrefabUtility.ConnectGameObjectToPrefab(go, Tile);
-
-                go.transform.position = new Vector3(pos.x, pos.y, Layer);
-
-                SpriteRenderer sr = go.GetComponent<SpriteRenderer>();
-                if(sr != null)
+                if(!World.posIsThis(pos, Tile))
                 {
-                    sr.sortingOrder = layer * -World.SORTING_ORDER_MULT;
+                    Debug.Log("new");
+                    GameObject go = (GameObject)GameObject.Instantiate(Tile, new Vector3(pos.x, pos.y, Layer), Quaternion.identity);
+                    go = PrefabUtility.ConnectGameObjectToPrefab(go, Tile);
+
+                    go.transform.position = new Vector3(pos.x, pos.y, Layer);
+
+                    SpriteRenderer sr = go.GetComponent<SpriteRenderer>();
+                    if(sr != null)
+                    {
+                        sr.sortingOrder = layer * -World.SORTING_ORDER_MULT;
+                    }
+                    go.transform.parent = Tiles;
+                    World.set(pos, layer, go);
                 }
-                go.transform.parent = Tiles;
-                World.set(pos, layer, go);
+                else
+                    Debug.Log("new");
             }
             else
             {

Assets/Scripts/MapEditor/World.cs

@@ -61,7 +61,8 @@ public static class World
     {
         if(!posInBounds(x, y, z))
             return false;
-        destroyPos(x,y,z);
+        
+        destroyPos(x, y, z);
 
         map[x][y][z] = go;
         return true;
@@ -99,7 +100,8 @@ public static class World
     {
         if(!posInBounds(x, y, z))
             return false;
-        return PrefabUtility.GetPrefabObject(map[x][y][z]) == PrefabUtility.GetPrefabObject(go);
+        
+        return PrefabUtility.GetPrefabParent(map[x][y][z]) == go;
     }
 
 

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 5.5.0xf3Linux
+m_EditorVersion: 5.3.5f1
+m_StandardAssetsVersion: 0