public Hex(Position position)
{
Position = position;
Piece = null;
Neighbours = new List<Hex>();
}
bool PieceCanReachHex(Piece piece, Hex hex)
{
if (piece.Type.PassThrough)
return piece.Type.Movement >= piece.Hex.Position.GetDistance(hex.Position);
else
{
HashSet<Position> map = new HashSet<Position>();
GetMovementMap(piece.Hex, piece.Type.Movement, map);
piece.Type.FilterMovementMap(piece.Hex.Position, piece.Owner.Colour, map);
return map.Contains(hex.Position);
}
}
void DeployPawn(Position position, Player player)
{
Hex hex = GetHex(position);
Piece piece = new Piece(GameConstants.Pieces[PieceTypeIdentifier.Pawn], player);
player.Pieces.Add(piece);
hex.Piece = piece;
}
int GetAttackSum(Piece attacker, Piece defender)
{
int attackSum = attacker.Type.Attack;
foreach (Hex neighbour in defender.Hex.Neighbours)
{
Piece piece = neighbour.Piece;
if (piece != null && piece != attacker && piece.Owner == attacker.Owner)
attackSum += piece.Type.Support;
}
return attackSum;
}
public void PromotePiece(Position position, PieceTypeIdentifier type)
{
position.CheckValidity();
if (CurrentTurnActions >= GameConstants.ActionsPerTurn)
throw new GameException("You may not perform any more actions this turn");
Hex hex = GetHex(position);
Piece piece = hex.Piece;
if (piece == null)
throw new GameException("There is no piece to promote, the specified hex is empty");
if (piece.Type.Identifier != PieceTypeIdentifier.Pawn)
throw new GameException("Only pawns may be promoted");
if (!piece.CanMove)
throw new GameException("This piece has already been moved this turn and can hence not be promoted");
if(type == PieceTypeIdentifier.Pawn)
throw new GameException("Invalid promotion identifier");
bool isClear = true;
foreach (Hex neighbour in hex.Neighbours)
{
Piece neighbourPiece = neighbour.Piece;
if (neighbourPiece != null && !object.ReferenceEquals(neighbourPiece.Owner, CurrentTurnPlayer))
{
isClear = false;
break;
}
}
if (!isClear)
throw new GameException("You cannot promote a piece that is in direct proximity of an opponent's piece");
Piece newPiece = new Piece(GameConstants.Pieces[type], CurrentTurnPlayer);
hex.Piece = newPiece;
newPiece.Hex = hex;
newPiece.CanMove = false;
piece.Hex = null;
CurrentTurnActions++;
}