public void batchHandle(int x1, int y1, int x2, int y2){
		int startX = (x1 <= x2 ? x1 : x2) ;
		int endX = x1 + x2 - startX ;
		int startY = (y1 <= y2 ? y1 : y2 ); 
		int endY = y1 + y2 - startY ; 
		
		int startI = (startY - 50) / 10 ;
		int startJ = (startX - 50 ) / 10 ;
		
		for( int i = startI ; i <= startI + (endY - startY)/10; i ++){
			for( int j = startJ; j < startJ + ( endX - startX ) / 10; j ++){
				setBlockType(i, j);
			}
		}
	}