private void NextBlockPreview()
{
if (_nextBlockPanel == null)
{
return;
}
TetrisPanel.DrawLocker.WaitOne();
const int size = 30;
int nextBlockNum = _block.NextBlockNum();
int[,] block = _block.BlockCreate(nextBlockNum, 0);
using (Graphics g = _nextBlockPanel.CreateGraphics())
{
int blockLen = block.GetLength(0);
for (int y = 0; y < 2; y++)
{
for (int x = 0; x < 4; x++)
{
if (x >= blockLen || y >= blockLen || block[y, x] != 1)
{
g.FillRectangle(Brushes.Black, x * size, y * size, size, size);
g.DrawRectangle(new Pen(Brushes.Black), x * size, y * size, size, size);
}
else
{
g.FillRectangle(_block.BlockColor[nextBlockNum], x * size, y * size, size,
size);
g.DrawRectangle(new Pen(Brushes.Black), x * size, y * size, size, size);
}
}
}
}
TetrisPanel.DrawLocker.Release();
}