public void PopulateObjects(Zone zone, Point globalScreenCoord) { Point offset = zone.getLocalScreenOffsetInPixels( zone.getLocalScreenFromGlobalScreen(globalScreenCoord)); Vector2 ripperPos = new Vector2( offset.X + Zone.SCREEN_WIDTH_IN_PIXELS / 2, offset.Y + Zone.SCREEN_HEIGHT_IN_PIXELS / 2); zone.add( new RipperController(ripperPos)); }