void StatusUpdate()
{
int hitsInPerson = 0;
targetTransformInSight = null;
foreach (RaycastHit hit in eyes.hits)
{
if (hit.transform && hit.transform.tag == "Player")
{
hitsInPerson++;
targetTransformInSight = hit.transform;
shootTarget = targetTransformInSight.FindChild("ShootTarget");
if (!shootTarget)
{
shootTarget = targetTransformInSight;
}
}
}
animator.SetLookAtWeight(lookWeight);
float lookWeightFinal = 0;
// If it is idle time after shooting some intruder
if (idleAfterShootingTimeCounter > 0)
{
sawOrHeardTargetPerson = false;
status = Status.Idle;
}
// If see or hear a person
else if (hitsInPerson > 0 || ears.hearSteps)
{
if (hitsInPerson > 0)
{
targetPosition = targetTransformInSight.position;
lookWeightFinal = 1f;
}
else if (ears.hearSteps)
{
targetPosition = ears.soundSourcePosition;
}
sawOrHeardTargetPerson = true;
status = Status.Following;
agent.speed = runSpeed;
alertSign.AttachTo(new Vector3(targetPosition.x, 0, targetPosition.z));
visionCone.status = FOV2DVisionCone.Status.Alert;
}
lookWeight = Mathf.Lerp(lookWeight, lookWeightFinal, Time.deltaTime * 3f);
if (shootTarget)
{
animator.SetLookAtPosition(shootTarget.position);
}
// Use a state machine for a behaviour actions of our "AI".
// Idle
if (status == Status.Idle)
{
if (waypointManager.TargetPoint)
{
float distanceToTargetWaypoint = Vector3.Distance(waypointManager.TargetPoint.transform.position, transform.position);
// Go to the base point if not yet there
if (distanceToTargetWaypoint > 1.5f)
{
targetPosition = waypointManager.TargetPoint.transform.position;
status = Status.Following;
}
else
{
waypointManager.SetNextPoint();
}
}
agent.speed = walkSpeed;
alertSign.Detach();
visionCone.status = FOV2DVisionCone.Status.Idle;
}
// Following the target position
else if (status == Status.Following)
{
float distanceToTarget = Vector3.Distance(targetPosition, transform.position);
// If close enought to shoot a laser beam in the target person
if (distanceToTarget <= shootDistance && targetTransformInSight && lookWeight >= 0.9f)
{
targetTransformInSight.gameObject.SendMessage("Shot");
idleAfterShootingTimeCounter = idleTimeAfterShooting;
}
// If the target position has reached
else if (distanceToTarget < 1.5f)
{
// Follow the target
agent.destination = transform.position;
// If previously saw the target person
if (sawOrHeardTargetPerson)
{
status = Status.Searching;
sawOrHeardTargetPerson = false;
}
// If still searching for the target person
else if (searchTimeCurrent > 0)
{
status = Status.Searching;
}
else
{
status = Status.Idle;
}
}
// Go for the target position
else
{
// If found the target or the searching time has expired
if (sawOrHeardTargetPerson && searchTimeCurrent > 0)
{
searchTimeCurrent = 0;
visionCone.status = FOV2DVisionCone.Status.Idle;
}
else if (searchTimeCurrent >= searchTime)
{
searchTimeCurrent = 0;
status = Status.Idle;
}
// If the searching timer on — add new delta-time to it
else if (searchTimeCurrent > 0)
{
searchTimeCurrent += Time.deltaTime;
}
// Follow the target position
agent.destination = targetPosition;
}
}
// Searching for the target person
else if (status == Status.Searching)
{
// If the searching time has expired
if (searchTimeCurrent >= searchTime)
{
status = Status.Idle;
searchTimeCurrent = 0;
}
else
{
if (searchTimeCurrent == 0)
{
centerOfSearchArea = targetPosition + (transform.forward * searchRadius);
}
searchTimeCurrent += Time.deltaTime;
NavMeshPath newPath = new NavMeshPath();;
int maxAttempts = 100;
int attempts = 0;
// Find a new random target position in the radius.
do
{
targetPosition = new Vector3(
centerOfSearchArea.x + Random.Range(-searchRadius, searchRadius),
centerOfSearchArea.y,
centerOfSearchArea.z + Random.Range(-searchRadius, searchRadius));
attempts++;
if (attempts >= maxAttempts)
{
targetPosition = transform.position;
break;
}
}
// The target position should be accessible on the NavMesh
while(agent.CalculatePath(targetPosition, newPath) == false);
agent.destination = targetPosition;
status = Status.Following;
alertSign.AttachTo(new Vector3(targetPosition.x, 0, targetPosition.z));
}
}
}
