public void RotateCCW()
{
if (this.game_end)
{
return;
}
Tetromino f = this.minos.First();
int left = f.GetLeft();
f.RotateCW();
bool revert = false;
foreach (System.Drawing.Rectangle r in this.minos.First().GetRectangles(0, 0))
{
int x = r.X / this.scale;
int y = r.Y / this.scale;
if (x >= 0 && x < 10 && y >= 0 && y < 20)
{
revert |= this.grid[x, y].Color != System.Drawing.Color.FromArgb(128, 255, 255, 255);
}
}
if (revert)
{
f.RotateCCW();
int displacement = left - f.GetLeft();
f.SetStart(displacement, 0);
}
}