public static void MapObjectPlaceInGoodPosition(Map map, Rectangle rect, Func <Point, bool> isGoodPosFn, DiceRoller roller, Func <Point, MapObject> createFn)
{
#if DEBUG
if (null == createFn)
{
throw new ArgumentNullException(nameof(createFn));
}
if (null == isGoodPosFn)
{
throw new ArgumentNullException(nameof(isGoodPosFn));
}
#endif
List <Point> pointList = rect.Where(pt => isGoodPosFn(pt) && map.GetTileModelAt(pt).IsWalkable&& !map.HasMapObjectAt(pt));
if (0 >= pointList.Count)
{
return;
}
Point pt2 = roller.Choose(pointList);
createFn(pt2)?.PlaceAt(map, in pt2);
}
// Formerly Las Vegas algorithm.
protected static bool ActorPlace(DiceRoller roller, Map map, Actor actor, Rectangle rect, Predicate <Point> goodPositionFn = null)
{
#if DEBUG
if (null == map)
{
throw new ArgumentNullException(nameof(map));
}
if (null == actor)
{
throw new ArgumentNullException(nameof(actor));
}
#endif
List <Point> valid_spawn = rect.Where(pt => map.IsWalkableFor(pt, actor) && (goodPositionFn == null || goodPositionFn(pt)));
if (0 >= valid_spawn.Count)
{
return(false);
}
map.PlaceAt(actor, roller.Choose(valid_spawn));
if (Session.Get.Police.IsEnemy(actor))
{
Session.Get.Police.Threats.RecordSpawn(actor, map, valid_spawn);
}
return(true);
}