private void Scan()
{
bool suspiciousActorSeen = false;
// Check each player:
foreach (PlayerController actor in AlarmSingleton.SuspiciousActors)
{
Vector3 actorDirection = AlarmSingleton.GetActorTorso(actor) - transform.position;
// Check to see if the actor is in the field of view and range of the camera.
if (Vector3.Angle(actorDirection, transform.forward) < fieldOfView / 2f &&
Vector3.Project(actorDirection, transform.forward).magnitude < maxViewDistance)
{
// Trigger event if this is the first actor seen
// and the alarm is not already in a triggered state.
if (audioSource.isPlaying == false)
{
audioSource.PlayOneShot(cameraAlarm);
}
suspiciousActorSeen = true;
if (!isCurrentlyAlarmed)
{
isCurrentlyAlarmed = true;
OnTriggered?.Invoke(actor);
}
break;
}
}
isCurrentlyAlarmed = suspiciousActorSeen;
}
private void Update()
{
// Reorient the text to face the main camera.
// TODO this behavior should be abstracted into
// another script.
stateText.transform.parent.LookAt(Camera.main.transform.position);
stateText.transform.parent.forward *= -1f;
// Do the update behavior specific to the current state.
switch (Behavior)
{
case AIBehaviorState.Stationary:
StationaryUpdate(); break;
case AIBehaviorState.Patrolling:
PatrollingUpdate(); break;
case AIBehaviorState.Investigating:
InvestigatingUpdate(); break;
case AIBehaviorState.Chasing:
ChasingUpdate(); break;
}
// If not chasing, check to see if any
// players are inside the field of view.
if (Behavior != AIBehaviorState.Chasing)
{
foreach (PlayerController actor in AlarmSingleton.SuspiciousActors)
{
// Get the direction vector from the AI to the actor.
Vector3 actorDirection = AlarmSingleton.GetActorTorso(actor)
- transform.position;
audioSource.volume = 4f;
if (audioSource.isPlaying == false)
{
audioSource.PlayOneShot(guardFootsteps[Random.Range(0, guardFootsteps.Length)]);
}
// Ignore elevation.
actorDirection.y = 0f;
// Check to see if the actor is within the personal space,
// or if they are within the field of view.
if (actorDirection.magnitude < personalSpaceRadius
||
(actorDirection.magnitude < viewDistance &&
Vector3.Angle(actorDirection, transform.forward) < fieldOfView / 2))
{
// Run a linecast to make sure there isn't a
// wall between the guard and actor.
if (IsSightLineClear(AlarmSingleton.GetActorTorso(actor)))
{
// If the player is seen switch to chasing.
transformCurrentlyChasing = actor.transform;
Behavior = AIBehaviorState.Chasing;
// Play the whistle sound effect.
whistleSource.Play();
break;
}
}
}
}
}