#acl All:
== ピースを動かす ==
{{{
	public void mousePressed(MouseEvent e)
	{
		int ix, iy, dx, dy;

		ix = e.getX() / pSize;
		iy = e.getY() / pSize;
		if(ix < 0 || ix >= nx || iy < 0 || iy >= ny) return;
		if(ix == spx && iy != spy)
		{
			dx = 0;
			dy = (iy < spy) ? -1 : 1;
		}
		else if(iy == spy && ix != spx)
		{
			dy = 0;
			dx = (ix < spx) ? -1 : 1;
		}
		else
			return;
		do
		{
			ban[spx][spy] = ban[spx+dx][spy+dy];
			spx = spx + dx;
			spy = spy + dy;
		} while (spx != ix || spy != iy);
		ban[spx][spy] = nx*ny-1;		// はずしたピース
		repaint();
	}
}}}