private bool MoveIsLegal(bool black, int x, int y, Direction direction)
{
var dir = DirectionHelper.DirectionToPoint(direction);
var targetX = x;
var targetY = y;
ApplyMovement(dir, ref targetX, ref targetY);
if (!OnBoard(targetX, targetY))
{
return(false);
}
if (_game.GetTileAt(targetX, targetY) == Tile.None || IsFriendColor(black, targetX, targetY))
{
return(false);
}
do
{
ApplyMovement(dir, ref targetX, ref targetY);
if (!OnBoard(targetX, targetY) || _game.GetTileAt(targetX, targetY) == Tile.None)
{
return(false);
}
if (IsEnemyColor(black, targetX, targetY))
{
continue;
}
if (IsFriendColor(black, targetX, targetY))
{
return(true);
}
} while (true);
}
private void FlipAt(bool black, Direction direction, int x, int y)
{
var dir = DirectionHelper.DirectionToPoint(direction);
var targetX = x;
var targetY = y;
var changes = new List <Point>();
do
{
ApplyMovement(dir, ref targetX, ref targetY);
if (!OnBoard(targetX, targetY) || _game.GetTileAt(targetX, targetY) == Tile.None)
{
return;
}
if (IsFriendColor(black, targetX, targetY))
{
if (changes.Count > 0)
{
break;
}
return;
}
if (IsEnemyColor(black, targetX, targetY))
{
changes.Add(new Point(targetX, targetY));
}
} while (true);
foreach (var point in changes)
{
_game.SetTileAt(point.X, point.Y, black ? Tile.Black : Tile.White);
}
}
private bool HasNeighbours(int x, int y) =>
Enum.GetValues(
typeof(Direction))
.Cast <Direction>()
.Any(direction => IsSet(x, y, DirectionHelper.DirectionToPoint(direction))
);