private void GetComponents()
{
_agent = GetComponent <NavMeshAgent>();
_thirdPersonCharacter = GetComponent <ThirdPersonCharacter>();
_aiSensor = GetComponentInChildren <AiSensor>();
_collider = GetComponentInChildren <SphereCollider>();
}
/// <summary>
/// Initialize all properties with the given sensor trigger. Note that the collider should have the
/// "Is Trigger" enabled.
/// </summary>
/// <param name="sensorTrigger"></param>
public SensorProperties(SphereCollider sensorTrigger, AiStateMachine stateMachine)
{
/*
* Assertions should be sufficient to notify us if something has not been configured correctly because many of the
* required components are actually manually added by us rather than instantiated by code and we'll get a meaningful
* message right when we play the scene.
* Thus, this is used in favor of all the "null" checks that were found in the lesson videos and that gives a little
* more clarity to the code.
*/
Assert.IsNotNull(sensorTrigger, "Missing sensorTrigger; did you forget to drag it onto the AI Entity GameObject in the inspector!");
// this will only happen if it is false to begin with; nothing happens if changed after
Assert.IsTrue(sensorTrigger.isTrigger, "Invalid sensorTrigger; make sure to set 'Is Trigger' to true in the inspector!");
this.sensorTrigger = sensorTrigger;
this.stateMachine = stateMachine;
// pass the parent state machine to the AiSensor script so that it can delegate trigger callbacks to it
AiSensor script = this.sensorTrigger.GetComponent <AiSensor>();
Assert.IsNotNull(script, "Missing AiSensor script on the Sensor GameObject!");
script.ParentStateMachine = stateMachine;
// Since sensor is a child with a local position and rotation, we need to ensure its position and radius
// scales correctly when ancestor values change (i.e. compute global or world position and radius)
// alternate way is to use the new method that computes both values
this.worldPosition = CalculationUtil.ComputeWorldPosition(this.sensorTrigger);
this.worldRadius = CalculationUtil.ComputeWorldRadius(this.sensorTrigger);
}
private void Awake()
{
_currentDestination = transform.position;
_currentPath = new NavMeshPath();
_aiSensor = GetComponentInChildren <AiSensor>();
_rigidBody = GetComponent <Rigidbody>();
_collider = GetComponent <Collider>();
GetNavMeshPath(transform.position, GetRandomRadialPos(wanderRadius), NavMesh.AllAreas);
GetNextCorner();
}
