public Image prefabToPieceImage(BoardState.ChessPiece piece, Color color)
{
Image pieceSpritePrefab = null;
switch (piece.Type)
{
case BoardState.ChessPieceType.Rook:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhiteRookPrefab : BlackRookPrefab;
break;
case BoardState.ChessPieceType.Knight:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhiteKnightPrefab : BlackKnightPrefab;
break;
case BoardState.ChessPieceType.Bishop:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhiteBishopPrefab : BlackBishopPrefab;
break;
case BoardState.ChessPieceType.Queen:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhiteQueenPrefab : BlackQueenPrefab;
break;
case BoardState.ChessPieceType.King:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhiteKingPrefab : BlackKingPrefab;
break;
case BoardState.ChessPieceType.Pawn:
pieceSpritePrefab = piece.Color == BoardState.ChessPieceColor.White ? WhitePawnPrefab : BlackPawnPrefab;
break;
}
var pieceImage = Instantiate(pieceSpritePrefab) as Image;
float pieceWScale = 50 / pieceImage.rectTransform.rect.width;
float pieceHScale = 50 / pieceImage.rectTransform.rect.height;
pieceImage.rectTransform.localScale = new Vector3(pieceWScale, pieceHScale);
pieceImage.rectTransform.localPosition = new Vector3();
pieceImage.color = color;
return(pieceImage);
}
void RefreshBoard(GameState.MatchState matchState, BoardState.Coordinate?selected)
{
CurrentMatchState = matchState;
StatusText.text = string.Format("{0} ({1})",
matchState.IsSelfTurn() ? "Your Turn" : "Their Turn",
matchState.BoardState.TurnColor == BoardState.ChessPieceColor.White ? "white" : "black");
for (int r = 0; r < 8; r++)
{
for (int c = 0; c < 8; c++)
{
foreach (Transform child in TransformGrid[r, c])
{
Destroy(child.gameObject);
}
}
}
if (matchState.BoardState.PreviousMove.IsCheckMate)
{
TitleText.text = "Game Finished";
StatusText.text = string.Format("{0} won!", matchState.IsSelfTurn() ? "They" : "You");
return;
}
HashSet <BoardState.ChessMove> moves;
var moveDestinations = new HashSet <BoardState.Coordinate>();
if (selected.HasValue)
{
moves = matchState.BoardState.GetPossibleMoves(selected.Value);
}
else
{
moves = new HashSet <BoardState.ChessMove>();
}
foreach (var move in moves)
{
moveDestinations.Add(move.To);
}
// Fill in pieces, except those that are move destinations
for (int c = 0; c < 8; c++)
{
for (int r = 0; r < 8; r++)
{
var coordinate = new BoardState.Coordinate(r, c);
bool isSelectedCoordinate = selected.HasValue && selected.Value.Equals(coordinate);
bool isMoveDestination = moveDestinations.Contains(coordinate);
BoardState.ChessPiece piece = matchState.BoardState.GetPieceAtCoordinate(coordinate);
// pieces that are move destinations are handled later because clicking on them has movement behavior.
if (piece.Type != BoardState.ChessPieceType.None && !isMoveDestination)
{
Color pieceHighlight = isSelectedCoordinate ? Color.green : Color.white;
Image pieceImage = prefabToPieceImage(piece, pieceHighlight);
pieceImage.transform.SetParent(TransformGrid[r, c], false);
// Only allow player to make moves if it is their turn. Games against local
// player allow both players to make a move on the same device.
if (matchState.IsSelfTurn() || matchState.Opponent.IsLocalOpponent())
{
pieceImage.GetComponent <Button>().onClick.AddListener(delegate
{
if (selected == null)
{
RefreshBoard(matchState, coordinate);
}
else if (selected.Value.Equals(coordinate))
{
RefreshBoard(matchState, null);
}
else
{
RefreshBoard(matchState, coordinate);
}
});
}
}
}
}
// Fill in pieces that are move destinations
foreach (var move in moves)
{
bool putsUserInCheck;
var newMatchState = new GameState.MatchState(
matchState.Opponent,
matchState.BoardState.TryApplyMove(move, out putsUserInCheck),
matchState.SelfIsWhite,
matchState.Identifier);
if (!putsUserInCheck)
{
bool isOpponentPiece = matchState.BoardState.GetPieceAtCoordinate(move.To).Type != BoardState.ChessPieceType.None;
Color pieceHighlight = isOpponentPiece ? Color.red : Color.blue;
BoardState.ChessPiece fromPiece = matchState.BoardState.GetPieceAtCoordinate(move.From);
Image pieceImage = prefabToPieceImage(fromPiece, pieceHighlight);
pieceImage.transform.SetParent(TransformGrid[move.To.Row, move.To.Column], false);
// Only allow player to make moves if it is their turn. Games against local
// player allow both players to make a move on the same device.
if (matchState.IsSelfTurn() || matchState.Opponent.IsLocalOpponent())
{
pieceImage.GetComponent <Button>().onClick.AddListener(delegate
{
// GameManager will handler whether or not we are saving a local or multiplayer
// game, and will notify us of the updated state via our
// CurrentMatchStateAvailableHandler
StatusText.text = "Saving Match...";
GameManager.Instance.UpdateMatchState(newMatchState);
});
}
}
}
}
