Building movable, Position save, Overlapse prevention

Assets/Game/Scripts/BuildingManager.cs

@@ -25,6 +25,7 @@ public class BuildingManager : MonoBehaviour
                 if(buildingState.id == building.buildingData.buildingName){
                     buildingExists  =true;
                     building.curLevel = buildingState.level;
+                    building.transform.position = (buildingState.position != Vector3.zero) ? buildingState.position : building.transform.position;
                     break;
                 }
             }