public override List <ChessMove> AvailableMoves(Board board)
{
List <ChessMove> moves = new List <ChessMove>();
//Front movement
Tile nextTile;
if (IsRelTileEmpty(1, 0, board, out nextTile))
{
ChessMove move = CreateMoveTo(nextTile);
if (nextTile.row == GetRowColorRelative(7))
{
move.isPromotionMove = true;
}
moves.Add(move);
if (currentTile.row == GetRowColorRelative(1))
{
Tile twoTilesAhead;
if (IsRelTileEmpty(2, 0, board, out twoTilesAhead))
{
moves.Add(CreateMoveTo(twoTilesAhead));
}
}
}
//Left Attack
Tile leftAttackTile;
if (IsRelTileEnemy(1, -1, board, out leftAttackTile))
{
ChessMove leftAttack = CreateMoveTo(leftAttackTile);
if (GetRowColorRelative(7) == leftAttackTile.row)
{
leftAttack.isPromotionMove = true;
}
moves.Add(leftAttack);
}
//Right Attack
Tile rightAttackTile;
if (IsRelTileEnemy(1, 1, board, out rightAttackTile))
{
ChessMove rightAttack = CreateMoveTo(rightAttackTile);
if (GetRowColorRelative(7) == rightAttackTile.row)
{
rightAttack.isPromotionMove = true;
}
moves.Add(rightAttack);
}
//En Passant
if (currentTile.row == GetRowColorRelative(4))
{
ChessMove lastMove = moveManager.GetLastMove();
if (lastMove.activePiece.GetPieceType() == PieceType.Pawn &&
lastMove.fromTile.row == GetRowColorRelative(6) &&
lastMove.toTile.row == GetRowColorRelative(4) &&
Mathf.Abs((int)lastMove.fromTile.col - (int)currentTile.col) == 1)
{
Tile enPassantTile = board.GetTile(GetRowColorRelative(5), lastMove.fromTile.col);
ChessMove enPassantMove = new ChessMove(currentTile, enPassantTile, lastMove.activePiece);
moves.Add(enPassantMove);
}
}
return(moves);
}