public static IEnumerable <Position> RepeatMove(this Position StartPosition, Func <Position, Position> ChangePosition)
{
//Struct -> pass by value, creates copy
Position copyPosition = StartPosition;
while (copyPosition.IsOnBoard())
{
Position nextMove = ChangePosition(copyPosition);
yield return(nextMove);
copyPosition = nextMove;
}
}
private Position[] AddCollisionPawn(ChessPiece CurrentPiece)
{
Position[] allTurns = CurrentPiece.PossibleTurns().SelectMany(x => x).ToArray();
List <Position> Builder = new List <Position>();
if (allTurns.Length == 0)
{
// Change to any piece except pawn and king
}
else
{
//Check forward, left forward, right forward
foreach (Position forwardDirection in allTurns)
{
if (this[forwardDirection] == null)
{
Builder.Add(forwardDirection);
}
else
{
break;
}
}
Position forward = allTurns[0];
//If there're pieces right or left corners, take them.
Position ForwardLeft = forward.ToLeft(CurrentPiece.Color);
if (ForwardLeft.IsOnBoard())
{
ChessPiece PieceForwardLeft = this[ForwardLeft];
if (PieceForwardLeft != null && PieceForwardLeft.Color != CurrentPiece.Color)
{
Builder.Add(ForwardLeft);
}
}
Position ForwardRight = forward.ToRight(CurrentPiece.Color);
if (ForwardRight.IsOnBoard())
{
ChessPiece PieceForwardRight = this[ForwardRight];
if (PieceForwardRight != null && PieceForwardRight.Color != CurrentPiece.Color)
{
Builder.Add(ForwardRight);
}
}
}
return(Builder.ToArray());
}
public static IEnumerable <Position> RepeatMove(this Position StartPosition, Func <Position, Position> ChangePosition, int HowManyTimes)
{
//Struct -> pass by value, creates copy
Position copyPosition = StartPosition;
for (int i = 0; i < HowManyTimes; i++)
{
if (copyPosition.IsOnBoard())
{
Position nextMove = ChangePosition(copyPosition);
yield return(nextMove);
copyPosition = nextMove;
}
}
}
