public void DeasilRotate()//顺时针旋转
{
for (int i = 0; i < runBlock.Length; i++)
{
int x = runBlock.XPos + runBlock[i].Y;
int y = runBlock.YPos + runBlock[i].X;
if (x < 0 || x > _width - 1)//如果超出左右边界，则旋转失败
{
return;
}
if (y < 0 || y > _heihgt - 1)//如果超出上下边界，则旋转失败
{
return;
}
}
runBlock.erase(gpPalette);
runBlock.DeasilRotate();
runBlock.Paint(gpPalette);
}