public Move GetMove(Board board, BoardState state)
{
Move[] moves = board.GetPossibleMoves(state);
Thread.Sleep(3500);
return(moves[random.Next(moves.Length)]);
}
private MCTSNode(MCTSNode parent, Board board, BoardState state)
{
this.board = board;
State = state;
Visits = 0;
Score = 0;
Parent = parent;
IsTerminal = board.GetPossibleMoves(state).Length == 0;
}
public void Expand(PieceType currentPieceType)
{
Children = board.GetPossibleMoves(State).Select(
x => new MCTSNode(this, board,
State.PlayMove(x)
)
).ToArray();
bool allTerminal = true;
double totalValue = 0;
foreach (MCTSNode child in Children)
{
child.Visits = 1;
double value;
if (child.IsTerminal)
{
value = child.Score = child.GetTerminalScore(currentPieceType);
}
else
{
allTerminal = false;
value = child.Score = child.Simulate(currentPieceType);
}
totalValue += value;
}
if (allTerminal)
{
IsTerminal = true;
UpdateTerminal();
}
else
{
UpdateValue(totalValue, Children.Length);
}
}
private void run()
{
while (gameState != GameState.End)
{
if (gameState == GameState.Start)
{
HandleStart();
}
else if (gameState == GameState.RedToMove)
{
// Ask the player for a move
Move move = redPlayer.GetMove(board, boardState);
boardState = boardState.PlayMove(move);
// Fire the event player moved
if (OnPlayerMove != null)
{
PlayerMoveEventArgs playerMoveEventArgs = new PlayerMoveEventArgs(board, boardState, redPlayer, move);
OnPlayerMove(this, playerMoveEventArgs);
}
gameState = GameState.RedMoved;
}
else if (gameState == GameState.RedMoved)
{
// Check if there are any possible moves
Move[] moves = board.GetPossibleMoves(boardState);
if (moves.Length == 0)
{
if (OnGameEnd != null)
{
GameBoardEventArgs gameBoardEventArgs = new GameBoardEventArgs(board, boardState);
OnGameEnd(this, gameBoardEventArgs);
}
gameState = GameState.End;
}
else
{
if (OnPlayerChanged != null)
{
PlayerEventArgs playerEventArgs = new PlayerEventArgs(board, boardState, blackPlayer);
OnPlayerChanged(this, playerEventArgs);
}
gameState = GameState.BlackToMove;
}
}
else if (gameState == GameState.BlackToMove)
{
// Ask the player for a move
Move move = blackPlayer.GetMove(board, boardState);
boardState = boardState.PlayMove(move);
// Fire the event player moved
if (OnPlayerMove != null)
{
PlayerMoveEventArgs playerMoveEventArgs = new PlayerMoveEventArgs(board, boardState, blackPlayer, move);
OnPlayerMove(this, playerMoveEventArgs);
}
gameState = GameState.BlackMoved;
}
else if (gameState == GameState.BlackMoved)
{
// Check if there are any possible moves
Move[] moves = board.GetPossibleMoves(boardState);
if (moves.Length == 0)
{
if (OnGameEnd != null)
{
GameBoardEventArgs gameBoardEventArgs = new GameBoardEventArgs(board, boardState);
OnGameEnd(this, gameBoardEventArgs);
}
gameState = GameState.End;
}
else
{
if (OnPlayerChanged != null)
{
PlayerEventArgs playerEventArgs = new PlayerEventArgs(board, boardState, redPlayer);
OnPlayerChanged(this, playerEventArgs);
}
gameState = GameState.RedToMove;
}
}
}
}