public override List <Percept> Sense(RogueGame game, Actor actor)
{
// compute FOV
HashSet <Point> visibleSet = LOS.ComputeFOVFor(game.Rules, actor);
// compute percepts of other actors.
List <Percept> list = new List <Percept>();
// roughly estimate time for two sensing methods.
int searchFovMethodTime = actor.ViewRange * actor.ViewRange;
int searchActorsListMethodTime = actor.Location.Map.CountActors;
// choose method which seems less costly in time.
if (searchFovMethodTime < searchActorsListMethodTime)
{
// FOV check : bad when few actors, good when many actors.
foreach (Point p in visibleSet)
{
Actor other = actor.Location.Map.GetActorAt(p.X, p.Y);
if (other != null && other != actor)
{
list.Add(new Percept(other, game.Session.WorldTime.TurnCounter, other.Location.Position));
}
}
}
else
{
// Actors list check : good when few actors, bad when many actors.
int maxRange = actor.ViewRange;
foreach (Actor other in actor.Location.Map.Actors)
{
if (other == actor)
{
continue;
}
if (game.Rules.LOSDistance(actor.Location.Position, other.Location.Position) > maxRange)
{
continue;
}
if (visibleSet.Contains(other.Location.Position))
{
list.Add(new Percept(other, game.Session.WorldTime.TurnCounter, other.Location.Position));
}
}
}
// done.
return(list);
}
public override List <Percept> Sense(RogueGame game, Actor actor)
{
// compute FOV
m_FOV = LOS.ComputeFOVFor(game.Rules, actor, actor.Location.Map.LocalTime, game.Session.World.Weather);
int maxRange = game.Rules.ActorFOV(actor, actor.Location.Map.LocalTime, game.Session.World.Weather);
// compute percepts.
List <Percept> list = new List <Percept>();
#region Actors
if ((m_Filters & SensingFilter.ACTORS) != 0)
{
// roughly estimate time for two sensing methods.
int searchFovMethodTime = maxRange * maxRange;
int searchActorsListMethodTime = actor.Location.Map.CountActors;
// choose method which seems less costly in time.
if (searchFovMethodTime < searchActorsListMethodTime)
{
// FOV check : bad when few actors, good when many actors.
foreach (Point p in m_FOV)
{
Actor other = actor.Location.Map.GetActorAt(p.X, p.Y);
if (other != null && other != actor)
{
list.Add(new Percept(other, actor.Location.Map.LocalTime.TurnCounter, other.Location));
}
}
}
else
{
// Actors list check : good when few actors, bad when many actors.
foreach (Actor other in actor.Location.Map.Actors)
{
if (other == actor)
{
continue;
}
if (game.Rules.LOSDistance(actor.Location.Position, other.Location.Position) > maxRange)
{
continue;
}
if (m_FOV.Contains(other.Location.Position))
{
list.Add(new Percept(other, actor.Location.Map.LocalTime.TurnCounter, other.Location));
}
}
}
}
#endregion
#region Items
if ((m_Filters & SensingFilter.ITEMS) != 0)
{
foreach (Point p in m_FOV)
{
Inventory inv = actor.Location.Map.GetItemsAt(p);
if (inv == null || inv.IsEmpty)
{
continue;
}
list.Add(new Percept(inv, actor.Location.Map.LocalTime.TurnCounter, new Location(actor.Location.Map, p)));
}
}
#endregion
#region Corpses
if ((m_Filters & SensingFilter.CORPSES) != 0)
{
foreach (Point p in m_FOV)
{
List <Corpse> corpses = actor.Location.Map.GetCorpsesAt(p.X, p.Y);
if (corpses != null)
{
list.Add(new Percept(corpses, actor.Location.Map.LocalTime.TurnCounter, new Location(actor.Location.Map, p)));
}
}
}
#endregion
// done.
return(list);
}
