protected override bool CanCapture(Dot pos, BoardState boardState, Dot dir)
{
var cap = pos.GetMoved(dir);
var dest = pos.GetMoved(dir.X * 2, dir.Y * 2);
int boardSize = boardState.GetBoardSize();
if (boardState.IsOnBoard(dest) == false)
{
return(false);
}
if (IsOponentColor(boardState.GetColor(cap)) == false)
{
return(false);
}
return(boardState.GetColor(dest) == PawnColor.NONE);
}
protected Pawn GetCapturedPawn(Dot pos, BoardState boardState, Dot dir)
{
pos = pos.GetMoved(dir);
while (boardState.IsOnBoard(pos) && boardState.GetColor(pos) == PawnColor.NONE)
{
pos = pos.GetMoved(dir);
}
if (boardState.IsOnBoard(pos) == false || IsOponentColor(boardState.GetColor(pos)) == false)
{
return(null);
}
var dest = pos.GetMoved(dir);
if (boardState.IsOnBoard(dest) == false || boardState.GetColor(dest) != PawnColor.NONE)
{
return(null);
}
return(boardState.GetPawn(pos));
}
protected List <PawnMove> GetNoneCaptureList(Dot pos, BoardState boardState, Dot dir)
{
var result = new List <PawnMove>();
pos = pos.GetMoved(dir);
while (boardState.IsOnBoard(pos) && boardState.GetColor(pos) == PawnColor.NONE)
{
result.Add(new PawnMove(pos, this, false));
pos = pos.GetMoved(dir);
}
return(result);
}
protected override List <PawnMove> GetNoneCaptureList(Dot pos, BoardState boardState)
{
Func <Dot, bool> emptyFunc = ((x) => boardState.GetColor(x) == PawnColor.NONE);
var result = new List <PawnMove>();
var move1 = pos.GetMoved(moveDir, 1);
var move2 = pos.GetMoved(moveDir, -1);
if (boardState.IsOnBoard(move1) && emptyFunc(move1))
{
result.Add(GetNoneCaptureMove(move1, boardState));
}
if (boardState.IsOnBoard(move2) && emptyFunc(move2))
{
result.Add(GetNoneCaptureMove(move2, boardState));
}
return(result);
}
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);
}
