public void Undo()
{
if (history.Count > 0)
{
ChessHistory newState = history.Pop();
state = newState.state;
movesWithoutKill = newState.movesWithoutKill;
gameOver = false;
ChangeTeam();
}
}
public void MakeMove(Vector2Int start, Vector2Int end)
{
Piece startPiece = GetPiece(start);
Piece[, ] oldState = CloneState(state);
ChessHistory newHistory = new ChessHistory();
newHistory.state = oldState;
newHistory.movesWithoutKill = 0;
history.Push(newHistory);
Piece destinationPiece = GetPiece(end);
if (destinationPiece != null)
{
Kill(destinationPiece);
}
else
{
movesWithoutKill++;
}
SetPiece(startPiece, end);
SetPiece(null, start);
// pawn promotion
if (startPiece is Pawn)
{
if (end.y == 0 || end.y == 7)
{
SetPiece(new Queen(startPiece.chess, startPiece.team), end);
}
}
if (movesWithoutKill >= 50)
{
GameOver();
return;
}
ChangeTeam();
}
