public abstract Pawn GetMovedToPos(Dot pos);
protected abstract List <PawnMove> GetNoneCaptureList(Dot pawnPos, BoardState boardState);
protected abstract List <PawnMove> GetCaptureList(Dot pos, BoardState bState, Dot dir, PawnMove pMove);
public Pawn(Dot pawnPos, PawnColor pawnColor)
{
this.pawnPos = pawnPos;
this.pawnColor = pawnColor;
}
protected abstract bool CanCapture(Dot pawnPos, BoardState boardState, Dot dir);
public override Pawn GetMovedToPos(Dot pos)
{
return(new DamePawn(pos, pawnColor));
}
protected bool CanCapture(Dot pos, BoardState boardState)
{
Func <int, int, bool> capFunc = ((x, y) => CanCapture(pos, boardState, new Dot(x, y)));
return(capFunc(1, 1) || capFunc(-1, -1) || capFunc(1, -1) || capFunc(-1, 1));
}
protected override List <PawnMove> GetCaptureList(Dot pos, BoardState bState, Dot dir, PawnMove pMove)
{
var capPawn = GetCapturedPawn(pos, bState, dir);
if (capPawn == null)
{
return(new List <PawnMove>());
}
pos = capPawn.GetPosition();
if (pMove.GetCapturedList().Contains(capPawn))
{
return(GetCaptureList(pos, bState, dir, pMove));
}
pos = pos.GetMoved(dir);
var result = new List <PawnMove>();
while (bState.IsOnBoard(pos) && bState.GetColor(pos) == PawnColor.NONE)
{
var destMove = pMove.CreateIncrMove(pos, capPawn, false);
result.AddRange(GetCaptureList(pos, bState, destMove));
pos = pos.GetMoved(dir);
}
return(result);
}
public DamePawn(Dot pos, PawnColor pawnColor) : base(pos, pawnColor)
{
}
protected override bool CanCapture(Dot pos, BoardState boardState, Dot dir)
{
return(GetCapturedPawn(pos, boardState, dir) != null);
}
public override Pawn GetMovedToPos(Dot pos)
{
return(new PiecePawn(pos, pawnColor, moveDir));
}
public PiecePawn(Dot pos, PawnColor pawnColor, int moveDir) : base(pos, pawnColor)
{
this.moveDir = moveDir;
}
protected override List <PawnMove> GetCaptureList(Dot pos, BoardState bState, Dot dir, PawnMove pMove)
{
if (CanCapture(pos, bState, dir) == false)
{
return(new List <PawnMove>());
}
var capPawn = bState.GetPawn(pos.GetMoved(dir));
if (pMove.GetCapturedList().Contains(capPawn))
{
return(new List <PawnMove>());
}
var destPos = pos.GetMoved(dir.X * 2, dir.Y * 2);
bool isDamePos = IsDameLanePos(destPos, bState);
var destMove = pMove.CreateIncrMove(destPos, capPawn, isDamePos);
return(GetCaptureList(destPos, bState, destMove));
}
protected PawnMove GetNoneCaptureMove(Dot pos, BoardState boardState)
{
return(new PawnMove(pos, this, IsDameLanePos(pos, boardState)));
}
