private int attack(Draught d, List <Draught> list)
{
List <Position> pos = d.getAttackMoves();
foreach (Position p in pos)
{
if (Arbiter.canAttack(d, p, list))
{
Position to = new Position();
to.x = p.x - d.getPosition().x > 0 ? p.x + 1 : p.x - 1;
to.y = p.y - d.getPosition().y > 0 ? p.y + 1 : p.y - 1;
List <Draught> newList = copyList(list);
newList.Remove(Arbiter.findDraught(p, newList));
Arbiter.findDraught(d.getPosition(), newList).moveTo(to);
return(POINTS_FOR_EAT + (Arbiter.findDraught(to, newList).isKing() != d.isKing()?POINTS_FOR_KING:0) + attack(Arbiter.findDraught(to, newList), newList));
}
}
return(checkDraught(d.getPosition(), list));
}
public static bool isAttack(Draught attacker, Position to, List <Draught> list)
{
if (!attacker.canMoveWithAttack(to))
{
return(false);
}
Position attacked = new Position();
attacked.x = to.x - attacker.getPosition().x > 0 ? to.x - 1 : to.x + 1;
attacked.y = to.y - attacker.getPosition().y > 0 ? to.y - 1 : to.y + 1;
if (attacker.isMyPosition(attacked))
{
return(false);
}
foreach (Draught d in list)
{
if (d.isMyPosition(attacked))
{
return(canAttack(attacker, attacked, list));
}
}
return(false);
}
public static bool canAttack(Draught from, Position attacked, List <Draught> list)
{
Position to = new Position((from.getPosition().x - attacked.x > 0 ? attacked.x - 1 : attacked.x + 1), (from.getPosition().y - attacked.y > 0 ? attacked.y - 1 : attacked.y + 1));
if (to.x > 7 || to.x < 0 || to.y > 7 || to.y < 0)
{
return(false);
}
List <Position> pos = from.getRoutTo(to);
if (pos == null)
{
return(false);
}
bool isFind = false;
foreach (Draught d in list)
{
if (d.isMyPosition(attacked) && d.isBlack() != from.isBlack())
{
isFind = true;
}
}
if (!isFind)
{
return(false);
}
foreach (Draught d in list)
{
foreach (Position p in pos)
{
if (!d.isMyPosition(attacked) && d.isMyPosition(p))
{
return(false);
}
}
}
return(true);
}
public void moveTo(Position to)
{
Position from = select.getPosition();
bool isKing = select.isKing();
if (Arbiter.isAttack(select, to, draughts))
{
attack(to);
}
else
{
select.moveTo(to);
}
if (isKing != select.isKing())
{
mw.setKing(from.x, from.y);
}
mw.turnOn(from.x, from.y, to.x, to.y);
}