/// <summary>
/// Creates a game state of the completed move.
/// </summary>
/// <returns></returns>
public GameState PerformMove()
{
var previousPieces = GameState.GamePieceList;
var newPieces = previousPieces.Where(p => p != StartGamePiece && !TakenGamePieces.Contains(p)).ToList();
newPieces.Add(EndGamePiece);
var newGameState = new GameState(GameState, newPieces, GameState.XLength, GameState.YLength);
return(newGameState);
}
/// <summary>
/// Calculates metrics for a move with respect to a player.
/// </summary>
/// <param name="pieceColour">The player colour to calculate metrics for.</param>
/// <returns></returns>
public GameMoveMetrics CalculateGameMoveMetrics(PieceColour pieceColour)
{
int createdFriendlyKings = 0;
if (StartGamePiece.PieceColour == pieceColour && StartGamePiece.PieceRank == PieceRank.Minion && EndGamePiece.PieceRank == PieceRank.King)
{
createdFriendlyKings = 1;
}
var futureMoves = PerformMove().CalculateAvailableMoves();
var friendlyMoves = futureMoves.Where(m => m.StartGamePiece.PieceColour == pieceColour).ToList();
var opponentMoves = futureMoves.Where(m => m.StartGamePiece.PieceColour != pieceColour).ToList();
int friendlyMovesAvailable = friendlyMoves.Count;
int opponentMovesAvailable = opponentMoves.Count;
int nextMoveFriendlyPiecesAtRisk = opponentMoves.Sum(m => m.TakenGamePieces.Count);
int nextMoveOpponentPiecesAtRisk = friendlyMoves.Sum(m => m.TakenGamePieces.Count);
int nextMoveFriendlyKingsCreated = friendlyMoves.Count(
m => m.StartGamePiece.PieceRank == PieceRank.Minion &&
m.EndGamePiece.PieceRank == PieceRank.King);
int nextMoveOpponentKingsCreated = opponentMoves.Count(
m => m.StartGamePiece.PieceRank == PieceRank.Minion &&
m.EndGamePiece.PieceRank == PieceRank.King);
int opponentPiecesTaken = TakenGamePieces.Count(p => p.PieceColour != pieceColour);
int totalPieces = GameState.GamePieceList.Count;
int totalFriendlyPieces = GameState.GamePieceList.Count(p => p.PieceColour == pieceColour);
int totalOpponentPieces = GameState.GamePieceList.Count(p => p.PieceColour != pieceColour);
int totalMinionPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.Minion);
int totalFriendlyMinionPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.Minion && p.PieceColour == pieceColour);
int totalOpponentMinionPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.Minion && p.PieceColour != pieceColour);
int totalKingPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.King);
int totalFriendlyKingPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.King && p.PieceColour == pieceColour);
int totalOpponentKingPieces = GameState.GamePieceList.Count(p => p.PieceRank == PieceRank.King && p.PieceColour != pieceColour);
var whitePiecesInBottom = GameState.GamePieceList.Where(p => p.PieceColour == PieceColour.White && p.Ycoord < GameState.YLength / 2);
var whitePiecesInTop = GameState.GamePieceList.Where(p => p.PieceColour == PieceColour.White && p.Ycoord > GameState.YLength / 2);
var blackPiecesInBottom = GameState.GamePieceList.Where(p => p.PieceColour == PieceColour.Black && p.Ycoord < GameState.YLength / 2);
var blackPiecesInTop = GameState.GamePieceList.Where(p => p.PieceColour == PieceColour.Black && p.Ycoord > GameState.YLength / 2);
int friendlyMinionsHome = 0;
int friendlyMinionsAway = 0;
int opponentMinionsHome = 0;
int opponentMinionsAway = 0;
if (pieceColour == PieceColour.White)
{
friendlyMinionsHome = whitePiecesInBottom.Count();
friendlyMinionsAway = whitePiecesInTop.Count();
opponentMinionsHome = blackPiecesInBottom.Count();
opponentMinionsAway = blackPiecesInTop.Count();
}
else if (pieceColour == PieceColour.Black)
{
friendlyMinionsHome = blackPiecesInTop.Count();
friendlyMinionsAway = blackPiecesInBottom.Count();
opponentMinionsHome = whitePiecesInTop.Count();
opponentMinionsAway = whitePiecesInBottom.Count();
}
else
{
throw new InvalidOperationException("Unknown piece colour.");
}
GameMoveMetrics gameMoveMetrics = new GameMoveMetrics(
createdFriendlyKings,
friendlyMovesAvailable,
opponentMovesAvailable,
nextMoveFriendlyPiecesAtRisk,
nextMoveOpponentPiecesAtRisk,
nextMoveFriendlyKingsCreated,
nextMoveOpponentKingsCreated,
opponentPiecesTaken,
totalPieces,
totalFriendlyPieces,
totalOpponentPieces,
totalMinionPieces,
totalFriendlyMinionPieces,
totalOpponentMinionPieces,
totalKingPieces,
totalFriendlyKingPieces,
totalOpponentKingPieces,
friendlyMinionsHome,
opponentMinionsHome,
friendlyMinionsAway,
opponentMinionsAway
);
return(gameMoveMetrics);
}
