public AICreeperBoard(CreeperBoard board)
{
_tileRows = CreeperBoard.TileRows;
_pegRows = CreeperBoard.PegRows;
BlackTileCount = 0;
WhiteTileCount = 0;
BlackPegs = new HashSet<AIBoardNode>();
WhitePegs = new HashSet<AIBoardNode>();
TileHistory = new Stack<CreeperColor>();
MoveHistory = new Stack<Move>();
GameStateHistory = new Stack<CreeperGameState>();
TileBoard = new AIBoardNode[_tileRows, _tileRows];
PegBoard = new AIBoardNode[_pegRows, _pegRows];
RowHeadBlack = new AIBoardNode[_tileRows];
RowHeadWhite = new AIBoardNode[_tileRows];
ColumnHeadBlack = new AIBoardNode[_tileRows];
ColumnHeadWhite = new AIBoardNode[_tileRows];
foreach (Piece tile in board.Tiles)
{
TileBoard[tile.Position.Row, tile.Position.Column] = new AIBoardNode(tile.Position.Row, tile.Position.Column, tile.Color);
}
foreach (Piece peg in board.Pegs)
{
PegBoard[peg.Position.Row, peg.Position.Column] = new AIBoardNode(peg.Position.Row, peg.Position.Column, peg.Color);
if (peg.Color == CreeperColor.Ice)
{
BlackPegs.Add(PegBoard[peg.Position.Row, peg.Position.Column]);
}
else if (peg.Color == CreeperColor.Fire)
{
WhitePegs.Add(PegBoard[peg.Position.Row, peg.Position.Column]);
}
}
for (int row = 0; row < _tileRows; row++)
{
for (int column = 0; column < _tileRows; column++)
{
if (TileBoard[row, column].Color == CreeperColor.Ice || TileBoard[row, column].Color == CreeperColor.Fire)
{
UpdateListHeads(row, column, TileBoard[row, column].Color);
AddTileToTeam(TileBoard[row, column]);
}
}
}
//Hash = new AIHash(this);
}
public AIBoardNode(AIBoardNode node)
{
Color = node.Color;
Row = node.Row;
Column = node.Column;
}
private void RemoveTileFromTeam(AIBoardNode tile)
{
tile.TeamNorth.TeamSouth = tile.TeamSouth;
tile.TeamSouth.TeamNorth = tile.TeamNorth;
tile.TeamEast.TeamWest = tile.TeamWest;
tile.TeamWest.TeamEast = tile.TeamEast;
if (tile.Color == CreeperColor.Ice)
{
if (--BlackTileCount < 0) throw new InvalidOperationException(BlackTileCount.ToString());
}
else if (tile.Color == CreeperColor.Fire)
{
if (--WhiteTileCount < 0) throw new InvalidOperationException(WhiteTileCount.ToString());
}
}
private void AddTileToTeam(AIBoardNode tile)
{
tile.TeamNorth = GetNextNode(tile.Row, tile.Column, CardinalDirection.North);
tile.TeamSouth = GetNextNode(tile.Row, tile.Column, CardinalDirection.South);
tile.TeamEast = GetNextNode(tile.Row, tile.Column, CardinalDirection.East);
tile.TeamWest = GetNextNode(tile.Row, tile.Column, CardinalDirection.West);
if ((tile.Color == CreeperColor.Ice))
{
if (++BlackTileCount > 32) throw new InvalidOperationException(BlackTileCount.ToString() + " is too big!");
}
else if (tile.Color == CreeperColor.Fire)
{
if (++WhiteTileCount > 32) throw new InvalidOperationException(WhiteTileCount.ToString() + " is too big!");
}
if (WhiteTileCount + BlackTileCount > 32)
{
throw new InvalidOperationException(WhiteTileCount.ToString() + " is too big!");
}
}
public IEnumerable<AIBoardNode> GetNeighbors(AIBoardNode node, CreeperColor color)
{
foreach (Position neighborPosition in new[]{
new Position(node.Row - 1, node.Column),
new Position(node.Row + 1, node.Column),
new Position(node.Row, node.Column - 1),
new Position(node.Row, node.Column + 1),
})
{
if (IsValidPosition(neighborPosition.Row, neighborPosition.Column, PieceType.Tile)
&& TileBoard[neighborPosition.Row, neighborPosition.Column].Color == color)
{
yield return TileBoard[neighborPosition.Row, neighborPosition.Column];
}
}
}