Done

AirBomber/AirBomber/DrawingAirBomber.cs

@@ -54,10 +54,13 @@ namespace ProjectAirBomber
         /// <param name="y"></param>
         public void SetPosition(int x, int y)
         {
+            if (EntityAirBomber == null)
+                return;
             if (x < 0 || y < 0 || x + _planeWidth >= _pictureWidth || y + _planeHeight >= _pictureHeight)
                 x = y = 2;
             _startPosX = x;
             _startPosY = y;
+            
         }
         /// <summary>
         /// </summary>