IEnumerable <Actor> SelectActorsInBox(World world, PPos a, PPos b, Func <Actor, bool> cond)
{
return(world.FindActorsInBox(a.ToWPos(0), b.ToWPos(0))
.Where(x => x.HasTrait <Selectable>() && x.Trait <Selectable>().Info.Selectable&& !world.FogObscures(x) && cond(x))
.GroupBy(x => x.GetSelectionPriority())
.OrderByDescending(g => g.Key)
.Select(g => g.AsEnumerable())
.DefaultIfEmpty(NoActors)
.FirstOrDefault());
}
IEnumerable<Actor> SelectActorsInBox(World world, PPos a, PPos b, Func<Actor, bool> cond)
{
return world.FindActorsInBox(a.ToWPos(0), b.ToWPos(0))
.Where(x => x.HasTrait<Selectable>() && x.Trait<Selectable>().Info.Selectable && !world.FogObscures(x) && cond(x))
.GroupBy(x => x.GetSelectionPriority())
.OrderByDescending(g => g.Key)
.Select(g => g.AsEnumerable())
.DefaultIfEmpty(NoActors)
.FirstOrDefault();
}