public void Tick(ActorMap am)
{
if (!Dirty)
{
return;
}
// PERF: Reuse collection to avoid allocations.
oldActors.Clear();
oldActors.UnionWith(currentActors);
var delta = new WVec(range, range, WDist.Zero);
currentActors.Clear();
currentActors.UnionWith(
am.ActorsInBox(position - delta, position + delta)
.Where(a => (a.CenterPosition - position).HorizontalLengthSquared < range.LengthSquared &&
(vRange.Length == 0 || (a.World.Map.DistanceAboveTerrain(a.CenterPosition).LengthSquared <= vRange.LengthSquared))));
if (onActorEntered != null)
{
foreach (var a in currentActors)
{
if (!oldActors.Contains(a))
{
onActorEntered(a);
}
}
}
if (onActorExited != null)
{
foreach (var a in oldActors)
{
if (!currentActors.Contains(a))
{
onActorExited(a);
}
}
}
Dirty = false;
}
public void Tick(ActorMap am)
{
if (!Dirty)
{
return;
}
var oldActors = currentActors;
var delta = new WVec(range, range, WDist.Zero);
currentActors = am.ActorsInBox(position - delta, position + delta)
.Where(a => (a.CenterPosition - position).HorizontalLengthSquared < range.LengthSquared &&
(vRange.Length == 0 || (a.World.Map.DistanceAboveTerrain(a.CenterPosition).LengthSquared <= vRange.LengthSquared)))
.ToList();
var entered = currentActors.Except(oldActors);
var exited = oldActors.Except(currentActors);
if (onActorEntered != null)
{
foreach (var a in entered)
{
onActorEntered(a);
}
}
if (onActorExited != null)
{
foreach (var a in exited)
{
onActorExited(a);
}
}
Dirty = false;
}
