private static void SetBlock(int horizontalPosition, int verticalPosition, BridgeTetris.Tetris.PieceType pieceType)
{
if (horizontalPosition >= 0 && horizontalPosition < BridgeTetris.Tetris.tetrisCourtWidth)
{
BridgeTetris.Tetris.tetrisCourt[horizontalPosition, verticalPosition] = pieceType;
}
BridgeTetris.Tetris.Invalidate();
}
private static BridgeTetris.Tetris.PieceType GetBlock(int horizontalPosition, int verticalPosition)
{
BridgeTetris.Tetris.PieceType retval = null;
if (horizontalPosition >= 0 && horizontalPosition < BridgeTetris.Tetris.tetrisCourtWidth &&
BridgeTetris.Tetris.tetrisCourt.Length > ((horizontalPosition + 1) * BridgeTetris.Tetris.tetrisCourtWidth) &&
verticalPosition > 0 && verticalPosition < BridgeTetris.Tetris.tetrisCourtHeight)
{
retval = BridgeTetris.Tetris.tetrisCourt[horizontalPosition, verticalPosition];
}
return(retval);
}
/// <summary>
/// do the bit manipulation and iterate through each
/// occupied block (x,y) for a given piece
/// </summary>
/// <param name="pieceType"></param>
/// <param name="horizontalPositon"></param>
/// <param name="verticalPosition"></param>
/// <param name="direction"></param>
/// <param name="fn"></param>
private static Tuple <int, int>[] Eachblock(BridgeTetris.Tetris.PieceType pieceType, int horizontalPositon, int verticalPosition, short direction)
{
int row = 0;
int column = 0;
int blocks = pieceType.Blocks[direction];
Tuple <int, int>[] result = new Tuple <int, int> [0];
for (int bit = 0x8000; bit > 0; bit = bit >> 1)
{
if ((blocks & bit) > 0)
{
result.Push(new Tuple <int, int>(horizontalPositon + column, verticalPosition + row));
}
if (++column == 4)
{
column = 0;
++row;
}
}
return(result);
}
private static void DrawPiece(CanvasRenderingContext2D specifiedCanvasContext, BridgeTetris.Tetris.PieceType pieceType,
int horizontalPosition, int verticalPosition, short direction)
{
var matchingCells = BridgeTetris.Tetris.Eachblock(pieceType, horizontalPosition, verticalPosition, direction);
foreach (var tuple in matchingCells)
{
BridgeTetris.Tetris.DrawBlock(specifiedCanvasContext, tuple.Item1, tuple.Item2, pieceType.Color);
}
}
