private void OnMouseDown()
{
if (tile.moveable == true)
{
ChessBoard board = tile.GetBoard();
// simple lambda function to allow code reuse in the statements below
System.Action <ChessPiece, ChessTile> movePiece = (p, t) =>
{
board.GetBoardArray()[p.X, p.Y].Piece = null; // set the previous tile's piece information to null
t.Piece = p; // store the piece into the tile
p.Move(t.X, t.Y); // move the piece's game object into the tile's position
};
//hardcoded castling algorithm
if (board.pieceInfo is King && Mathf.Abs(tile.X - board.pieceInfo.X) > 1)
{
ChessTile t = (tile.X - board.pieceInfo.X > 0) ? board.GetBoardArray()[tile.X - 1, tile.Y] : board.GetBoardArray()[tile.X + 1, tile.Y];
Rook r = (tile.X - board.pieceInfo.X > 0) ? board.GetBoardArray()[tile.X + 1, tile.Y].Piece as Rook : board.GetBoardArray()[tile.X - 2, tile.Y].Piece as Rook;
movePiece(r, t);
movePiece(board.pieceInfo, tile); // move king
}
//hardcoded en passant algorithm
else if (board.pieceInfo is Pawn && tile.Piece == null && tile.X != board.pieceInfo.X && ((Pawn)board.pieceInfo).promoted == null)
{
ChessTile t = (board.pieceInfo.GetTeam() == Team.White) ? board.GetBoardArray()[tile.X, tile.Y - 1] : board.GetBoardArray()[tile.X, tile.Y + 1];
board.RemoveFromBoard(t.Piece); // remove the piece from board
t.Piece.Enabled = false; // disable the piece interaction
t.Piece = null; // set the previous tile's piece information to null
movePiece(board.pieceInfo, tile);
}
//hardcoded promotion algorithm
else if (board.pieceInfo is Pawn && (tile.Y == 0 || tile.Y == board.GetBoardArray().GetLength(1) - 1) && ((Pawn)board.pieceInfo).promoted == null)
{
movePiece(board.pieceInfo, tile);
Pawn p = board.pieceInfo as Pawn;
board.uiPromotion.Show(board, p);
}
// normal move
else if (board.pieceInfo != null)
{
movePiece(board.pieceInfo, tile); // move the piece
}
board.onMoveListener();
}
}
