private void Update()
{
// Do the current state of this enemy.
switch (this.state)
{
case EnemyControllerState._idle:
// Check if been idle long enough
if (Time.time >= this.exitIdleTime)
{
this.state = EnemyControllerState._waypoints; break;
}
// Shouldn't have a target object if not chasing.
this.targetObject = null;
// Shouldn't have a path if idle.
this.navMeshAgent.ResetPath();
break;
case EnemyControllerState._waypoints:
// Set a new random destination if not already heading to one.
if (this.navMeshAgent.hasPath == false)
{
// Clean out any empty waypoint elements.
this.waypoints.RemoveAll(item => item == null);
if (this.waypoints.Count > 0)
{
this.navMeshAgent.SetDestination(this.waypoints[Random.Range(0, this.waypoints.Count)].position);
}
else
{
this.state = EnemyControllerState._idle;
this.exitIdleTime = Time.time + this.idleWaitTime;
}
}
// Shouldn't have a target object if not chasing.
this.targetObject = null;
break;
case EnemyControllerState._chase:
// Check still got a target object or set back to idle.
if (this.targetObject == null)
{
this.state = EnemyControllerState._idle; break;
}
// Set navMeshAgent destination to target object position.
this.navMeshAgent.SetDestination(this.targetObject.transform.position);
break;
}
}
public override void SetTarget(GameObject targetGameObject)
{
// Set the target object.
this.targetObject = targetGameObject;
// Check if there is a target object.
if (this.targetObject == null)
{
if (this.state == EnemyControllerState._chase)
{
this.state = EnemyControllerState._idle;
} // Stop chasing if no target.
return;
}
// Start chasing.
this.state = EnemyControllerState._chase;
}
