private IEntity FindBestTarget()
{
// "best" target is the closest one with LOS
var ents = _entMan.GetEntitiesInRange(SelfEntity, VisionRadius);
var myTransform = SelfEntity.GetComponent <IServerTransformComponent>();
var maxRayLen = VisionRadius * 2.5f; // circle inscribed in square, square diagonal = 2*r*sqrt(2)
_workList.Clear();
foreach (var entity in ents)
{
// filter to "people" entities (entities with controllers)
if (!entity.HasComponent <IMoverComponent>())
{
continue;
}
// build the ray
var dir = entity.GetComponent <TransformComponent>().WorldPosition - myTransform.WorldPosition;
var ray = new Ray(myTransform.WorldPosition, dir.Normalized);
// cast the ray
var result = _physMan.IntersectRay(ray, maxRayLen);
// add to visible list
if (result.HitEntity == entity)
{
_workList.Add(entity);
}
}
// get closest entity in list
var closestEnt = GetClosest(myTransform.WorldPosition, _workList);
// return closest
return(closestEnt);
}