private static List <Move> GetPawnMoves(IGameBoardState gameBoard, IPieceState piece)
{
List <Move> moves = new List <Move>();
int moveDirection = GetPawnMoveDirection(piece);
int pawnStartRow = GetPawnStartRow(gameBoard, piece);
int possibleDistance;
//check one space ahead, two spaces ahead if on starting row
if (piece.GetSpaceState().GetRow() == pawnStartRow)
{
possibleDistance = 2;
}
else
{
possibleDistance = 1;
}
int[] vOffsets = { -1, 0, 1 };
foreach (int vOffset in vOffsets)
{
for (int i = 1; i <= possibleDistance; i++)
{
ISpaceState cSpace = gameBoard.GetSpaceState(piece.GetSpaceState().GetLevel() + vOffset, piece.GetSpaceState().GetRow() + moveDirection * i, piece.GetSpaceState().GetCol());
if (cSpace != null && cSpace.IsOccupied())
{
break;
}
else if (cSpace != null)
{
moves.Add(new Move(piece, cSpace, Move.MoveType.nocap));
}
}
}
//check diagonals for possible capture
int[] cOffsets = { -1, 1 };
foreach (int vOffset in vOffsets)
{
foreach (int cOffset in cOffsets)
{
ISpaceState cSpace = gameBoard.GetSpaceState(piece.GetSpaceState().GetLevel(), piece.GetSpaceState().GetRow() + moveDirection, piece.GetSpaceState().GetCol() + cOffset);
if (cSpace != null && cSpace.IsOccupied() && cSpace.Occupier().GetPlayer() != piece.GetPlayer())
{
moves.Add(new Move(piece, cSpace, Move.MoveType.cap));
}
}
}
//TODO: check for en passant
return(moves);
}
public GameBoardState Clone()
{
GameBoardState newGbs = new GameBoardState(this.levels, this.rows, this.cols);
IGameBoardState igbs = this;
for (int lvl = 0; lvl < (igbs.GetNumLevels()); lvl++)
{
for (int row = 0; row < (igbs.GetNumRows()); row++)
{
for (int col = 0; col < (igbs.GetNumCols()); col++)
{
ISpaceState iss = igbs.GetSpaceState(lvl, row, col);
newGbs.spaces[lvl][row][col].occupied = iss.IsOccupied();
IPieceState ips = iss.Occupier();
if (ips != null)
{
PieceState ps = ips.CreatePieceState();
newGbs.spaces[lvl][row][col].occupier = ps;
newGbs.AlivePieces.Add(ps);
ps.space = newGbs.spaces[lvl][row][col];
}
}
}
}
foreach (IPieceState piece in DeadPieces)
{
newGbs.DeadPieces.Add(piece.CreatePieceState());
}
return(newGbs);
}
public void RenderBoard(IGameBoardState gameBoard)
{
int levels = gameBoard.GetNumLevels();
int rows = gameBoard.GetNumRows();
int cols = gameBoard.GetNumCols();
for (int i = 0; i < levels; i++)
{
for (int j = 0; j < rows; j++)
{
for (int k = 0; k < cols; k++)
{
Image img = squareLookup[i][j][k];
if (img != null)
{
if (gameBoard.GetSpaceState(i, j, k).IsOccupied())
{
Piece.PieceType pieceType = gameBoard.GetSpaceState(i, j, k).Occupier().GetPieceType();
img.sprite = PieceSprites[pieceType];
img.color = gameBoard.GetSpaceState(i, j, k).Occupier().GetPieceTint();
img.Desaturate();
}
else
{
img.sprite = BlankSprite;
img.color = Color.white;
}
}
else
{
Debug.Log("Error: image not found at index " + i + " " + j + " " + k);
}
}
}
}
}
private static List <Move> GetMovesInDirection(IGameBoardState gameBoard, IPieceState piece, int levelDirection, int rowDirection, int colDirection, int max = 99)
{
List <Move> moves = new List <Move>();
int levelChange = levelDirection;
int rowChange = rowDirection;
int colChange = colDirection;
for (int i = 0; i < max; i++)
{
ISpaceState cSpace = gameBoard.GetSpaceState(piece.GetSpaceState().GetLevel() + levelChange, piece.GetSpaceState().GetRow() + rowChange, piece.GetSpaceState().GetCol() + colChange);
if (cSpace == null)
{
break;
}
if (cSpace.IsOccupied() && cSpace.Occupier().GetPlayer() != piece.GetPlayer())
{
//last move in the sequence is a cap move
moves.Add(new Move(piece, cSpace, Move.MoveType.cap));
break;
}
if (cSpace.IsOccupied() && cSpace.Occupier().GetPlayer() == piece.GetPlayer())
{
break;
}
if (!cSpace.IsOccupied())
{
moves.Add(new Move(piece, cSpace, Move.MoveType.nocap));
//amplify move for next iteration
levelChange += levelDirection;
rowChange += rowDirection;
colChange += colDirection;
}
}
return(moves);
}
