public GameState()
{
this.current = makeTet();
this.next = makeTet();
for (int row = 0; row < 21; row++)
{
clearLine(row);
}
}
private void toggleTet(Tetrimino tet)
{
// Toggles all checkboxes occupied by the given tetrimino.
Tetrimino.Cell[,] mask = tet.currentMask();
for (int row = 0; row < 4; row++)
{
for (int col = 0; col < 4; col++)
{
if(mask[row, col] == Tetrimino.Cell.Block)
{
this.board[row+tet.row, col+tet.col].Checked = !this.board[row+tet.row,col+tet.col].Checked;
}
}
}
}
public void swapPreview()
{
current = next;
next = makeTet();
}
public Boolean maskCollides(Tetrimino.Cell[,] mask, int rowOffset, int colOffset)
{
// Returns true if any cell of the given mask will collide with the background layer
// or if any cell is outside the boundaries of the board
for (int row = 0; row < 4; row++)
{
for (int col = 0; col < 4; col++)
{
// if the block is present, make sure it's in the game board and not colliding with the background
if (mask[row, col] == Tetrimino.Cell.Block &&
(rowOffset+row > 20 || rowOffset+row < 0 || colOffset+col > 9 || colOffset+col < 0
|| background[rowOffset+row, colOffset+col] == Tetrimino.Cell.Block))
return true;
}
}
return false;
}