private IEnumerable <List <DraughtsAction> > GetAllHits(DraughtsPlayerType playerType, DraughtsState state, List <DraughtsAction> hits)
{
DraughtsState stateTmp = (DraughtsState)state.Clone();
foreach (DraughtsActionHit hit in hits)
{
hit.Execute(stateTmp);
}
IEnumerable <DraughtsActionHit> nextLevelHit = GetHit(playerType, (DraughtsActionHit)hits.Last(), stateTmp);
if (!nextLevelHit.Any())
{
yield return(hits);
}
else
{
foreach (DraughtsActionHit hit in nextLevelHit)
{
List <DraughtsAction> newHits = new List <DraughtsAction>(hits);
newHits.Add(hit);
foreach (List <DraughtsAction> newHit in GetAllHits(playerType, state, newHits))
{
yield return(newHit);
}
}
}
}
private static IEnumerable <DraughtsActionHit> GetHit(DraughtsPlayerType playerType, DraughtsActionHit hit, DraughtsState state)
{
foreach (KeyValuePair <Point, Vector[]> placeAndNeighbors in state.Board.PlacesAndNeighbors)
{
if (hit == null || hit.PointTarget == placeAndNeighbors.Key)
{
foreach (Vector neighbor in placeAndNeighbors.Value)
{
DraughtsActionHit hitNew = new DraughtsActionHit(playerType, placeAndNeighbors.Key, neighbor, state);
if (hitNew.IsAllowed)
{
yield return(hitNew);
}
}
}
}
}
public DraughtsActionMove(DraughtsPlayerType playerType, Point point, Vector vector, DraughtsState state) : base(playerType, point, vector)
{
IsEnd = true;
PointTarget = new Point(point.X + vector.X, point.Y + vector.Y);
Vector[] neighbors = state.Board.PlacesAndNeighbors[point];
if (!neighbors.Contains(vector) ||
playerType != state.Board[point] ||
state.Board[PointTarget] != default ||
PlayerType == DraughtsPlayerType.Black && vector.X == -1 ||
PlayerType == DraughtsPlayerType.White && vector.X == 1)
{
IsAllowed = false;
}
else
{
IsAllowed = true;
}
}
public DraughtsActionHit(DraughtsPlayerType playerType, Point point, Vector vector, DraughtsState state) : base(playerType, point, vector)
{
Vector[] neighbors = state.Board.PlacesAndNeighbors[point];
PointTargetToHit = new Point(point.X + vector.X, point.Y + vector.Y);
PointTarget = new Point(point.X + vector.X * 2, point.Y + vector.Y * 2);
DraughtsPlayerType enemy = PlayerType == DraughtsPlayerType.Black ? DraughtsPlayerType.White : DraughtsPlayerType.Black;
if (!neighbors.Contains(vector) ||
!state.Board.PlacesAndNeighbors[PointTargetToHit].Contains(vector) ||
playerType != state.Board[point] ||
state.Board[PointTargetToHit] != enemy ||
state.Board[PointTarget] != default)
{
IsAllowed = false;
}
else
{
IsAllowed = true;
}
}
protected DraughtsAction(DraughtsPlayerType playerType, Point point, Vector vector)
{
PlayerType = playerType;
Vector = vector;
Point = point;
}
