public override BehaviourSM.StateResponse Update(AIController controller)
{
const float minPatrolDist = 2.0f;
if(Time.time - lastLooktime > thisLookInterval) {
lookDirection = Random.insideUnitCircle;
thisLookInterval = Random.Range(minWaitInterval, maxWaitInterval);
lastLooktime = Time.time;
}
// If the controller has a source spawn, then check if there any patrol points associated with it to follow
if(controller.SourceSpawn != null && controller.SourceSpawn.patrolPoints.Count > 0) {
float distToPoint = (controller.transform.position - controller.SourceSpawn.patrolPoints[patrolIdx].position).magnitude;
if(distToPoint < minPatrolDist) {
patrolIdx += 1;
if(patrolIdx >= controller.SourceSpawn.patrolPoints.Count) {
patrolIdx = 0;
}
}
controller.SetMovetoTarget(controller.SourceSpawn.patrolPoints[patrolIdx].position);
}
else {
controller.SetMovetoTarget(controller.transform.position);
}
// lerp towards teh current look direction
Vector3 currentFacing = controller.headTransform.up;
controller.headTransform.up = Vector3.RotateTowards(currentFacing, lookDirection, lookSpeed * Time.deltaTime, 0.0f);
// TRANSITIONS:
if(controller.HasLOSTarget()) {
controller.OnAquireTarget();
return new BehaviourSM.StateResponse(BehaviourSM.TransitionMode.PushCurrent, new Behaviour_Attack());
}
return new BehaviourSM.StateResponse(BehaviourSM.TransitionMode.NoChange);
}
private bool CanShootTarget(AIController controller)
{
// otherwise, check that there are no other mechs in the way
Vector3 fireOrigin = GetWeaponOrigin(controller);
// Some enemies do not shoot when they are not visible on screen
if(controller.doesntShootOffScreen &&
!WorldManager.instance.ObjectOnScreen(controller.gameObject)) {
return false;
}
Vector3 toTarget = controller.target.transform.position - fireOrigin;
float arcToTarget = Vector3.Dot(controller.headTransform.up, toTarget.normalized);
// constrain the shooting to within an arc
if(arcToTarget < maxFireArc || toTarget.magnitude > controller.GetAttackRange()) {
return false;
}
if(!controller.CheckLOSFrom(fireOrigin, controller.target.transform.position, 100.0f)) {
controller.OnLostSightOfTarget();
return false;
}
else if(!controller.isTrackingTarget) {
controller.OnAquireTarget();
}
// allow the weapon to decide if it can shoot yet, or if it is doing something
if(controller.MechComponent != null && controller.MechComponent.leftWeapon != null &&
!controller.MechComponent.leftWeapon.AI_AllowFire(controller)) {
return false;
}
return true;
}