void UpdateArrival()
{
var leaderPos = (Vector2)leader.transform.position;
var leaderDir = SteeringBehaviour.GetDirection(leader);
var arrivalTarget = leaderPos - leaderDir * behindDistance;
arrival.enabled = true;
arrival.SetTarget(arrivalTarget);
}
void PickNewPerch()
{
int r;
if (perches.Length > 0)
{
r = Random.Range(0, perches.Length + 1);
if (r >= perches.Length)
{
// no perch! just flock
target = null;
}
else
{
target = perches[r];
steerPerch.SetTarget(target);
}
}
}
private void DetermineSubsumptionBehavior()
{
// Level 4 -> Flee from enemies when at low hp
if (!fleeEnemyBehavior.isInhibited)
{
if (isScared)
{
var closestEnemy = FindClosestEnemy();
currentEnemyFleeing = closestEnemy == null ? null : closestEnemy.transform;
fleeEnemyBehavior.SetTarget(currentEnemyFleeing);
// We are scared and activly fleeing
if (currentEnemyFleeing != null && WithinFleeRadius(currentEnemyFleeing.position))
{
fleeEnemyBehavior.InhibitLowerBehaviors();
heading = fleeEnemyBehavior.GetBehaviorHeading();
}
// We are scared but not activly fleeing
else
{
fleeEnemyBehavior.ResumeLowerBehaviors();
}
}
// We are no longer scared
else
{
fleeEnemyBehavior.ResumeLowerBehaviors();
}
}
// Level 3 -> Persue enemies, be aggresive, and attack.
if (!persueBehavior.isInhibited)
{
GameObject newTarget = null;
// Resources have depleted.
if (currentResourcePersued == null)
{
newTarget = FindClosestEnemy();
}
// Find the closes enemy to our resource.
else
{
newTarget = FindClosestEnemyToResource(currentResourcePersued);
}
// Only set new target if it is not the same as old target
if (currentEnemyPersued != newTarget)
{
currentEnemyPersued = newTarget;
persueBehavior.SetTarget(currentEnemyPersued);
attackBehavior.SetTarget(currentEnemyPersued);
}
if (currentEnemyPersued != null && WithinRadiusOfFood(transform.position) && WithinRadiusOfFood(currentEnemyPersued.transform.position))
{
persueBehavior.InhibitLowerBehaviors();
heading = persueBehavior.GetBehaviorHeading();
}
else
{
persueBehavior.ResumeLowerBehaviors();
}
}
// Level 1 -> Eat food if it is in radius.
if (!eatBehavior.isInhibited)
{
eatBehavior.SetTarget(currentResourcePersued);
}
// Level 1 -> Seek food and eat if within radius.
if (!arrivalBehavior.isInhibited)
{
currentResourcePersued = FindNearestFood();
arrivalBehavior.SetTarget(currentResourcePersued);
heading = arrivalBehavior.GetBehaviorHeading();
}
// Level 0 -> Avoid obstacles
if (!avoidObstacleBehavior.isInhibited)
{
var currentObstacle = FindClosestObstacle();
avoidObstacleBehavior.SetTarget(currentObstacle);
if (currentObstacle != null)
{
heading = avoidObstacleBehavior.GetBehaviorHeading();
}
}
}