private void eraseBlockSub(Block block, Graphics g, float unit)
{
this.drawField(g, block.B1.X, block.B1.Y, unit);
if (!block.isStanding())
{
this.drawField(g, block.B2.X, block.B2.Y, unit);
}
}
private bool check(Block block)
{
return block.isStanding() && block.B1.check(this.goal);
}