// ignoreNonPreferrential
// In a sphere with the radius of range, find all enemy units and pick one to target
List <ITargetable> ScanForTargets(bool ignoreNonPreferred)
{
Collider[] cols = Physics.OverlapSphere(transform.position, range, gameRules.targetLayerMask);
List <ITargetable> targs = new List <ITargetable>();
for (int i = 0; i < cols.Length; i++)
{
ITargetable targ = GetITargetableFromCol(cols[i]);
if (IsNull(targ)) // No targetable found
{
continue;
}
if (targs.Contains(targ)) // Ignore multiple colliders for one targetable
{
continue;
}
if (targ.GetTeam() == parentUnit.GetTeam()) // Can't target allies
{
continue;
}
if (!targ.GetVisibleTo(parentUnit.GetTeam())) // Must be visible to this team
{
continue;
}
// Can ignore non-preferred targets altogether (used when searching for a better target)
if (ignoreNonPreferred && targ.GetTargetType() != preferredTargetType)
{
continue;
}
// The list of colliders is created by intersection with a range-radius sphere, but the center of this unit can still actually be out of range, leading to a target which cannot be shot at
if (!IsValid(targ))
{
continue;
}
targs.Add(targ);
}
// Sort by distance and target type
targs.Sort(delegate(ITargetable a, ITargetable b)
{
return(ComparisonWeight(a)
.CompareTo(
ComparisonWeight(b)));
});
return(targs);
}
bool IsValid(ITargetable potentialTarget)
{
// Valid distance
float sqrDistance = !IsNull(potentialTarget) ? (potentialTarget.GetPosition() - parentUnit.transform.position).sqrMagnitude : 0; // Check distance between us and the target // TODO: Maybe check from the parent unit's position?
// Valid direction
Vector3 dir = !IsNull(potentialTarget) ? CalcAdjDirection(potentialTarget) : transform.forward; // direction used elsewhere to check if aimed at target or not
bool valid = false;
// Have target, its in range, the look rotation is within limits, it is visible to our team
if (!IsNull(potentialTarget) && sqrDistance <= range * range && ValidRotationHorizontal(CalcLookRotation(dir)) && potentialTarget.GetVisibleTo(parentUnit.GetTeam()))
{
valid = true;
}
else
{
valid = false;
}
return(valid);
}
