public IEnumerator WarmUpGun()
{
/* This function provides a delay before allowing the turret to shoot,
* to avoid having an overpowered turret that fires at the player
* instantly once they come around a corner.
*/
yield return(new WaitForSeconds(shootDelay));
if (state == TURRET_BEHAVIOUR_STATE.PreparingFire)
{
state = TURRET_BEHAVIOUR_STATE.Firing;
}
yield return(null);
}
private void StopShooting()
{
if (state == TURRET_BEHAVIOUR_STATE.PreparingFire || state == TURRET_BEHAVIOUR_STATE.Firing)
{
Debug.Log(transform.name + ": Stopping Turret (line of sight lost), now searching randomly");
state = TURRET_BEHAVIOUR_STATE.Searching;
}
switch (searchMode)
{
case TURRET_SEARCH_TYPE.PointToPoint:
SearchPtP();
break;
case TURRET_SEARCH_TYPE.Random:
SearchRandomly();
break;
default:
SearchRandomly();
break;
}
}
void Update()
{
// Does the turret have a target?
if (target)
{
// Is the target within viewing distance?
float distToTarget = Vector3.Distance(target.transform.position, rotationPiece.transform.position);
if (distToTarget <= trackingRange)
{
// Only allow line of sight if the player is in front of the turret
float angleDegreesToPlayer = Vector3.Angle(rotationPiece.forward, (target.transform.position - rotationPiece.transform.position).normalized);
if (angleDegreesToPlayer < visionAngle)
{
// Raycast to check if the turret has line of sight to the target
Vector3 angleToTarget = target.transform.position - rotationPiece.transform.position;
RaycastHit hit = new RaycastHit();
RaycastHit[] hits = Physics.RaycastAll(new Ray(rotationPiece.position, angleToTarget), Vector3.Distance(target.transform.position, rotationPiece.transform.position) + 0.01f);
Debug.DrawRay(rotationPiece.position, angleToTarget, Color.red);
// Find first collision that shouldn't be ignored (prevents losing LOS if a bullet, etc gets in the way)
foreach (RaycastHit h in hits)
{
bool hitVisible = true;
// Ignore the turret itself including all child objects
if (!(h.transform.IsChildOf(transform)))
{
// Check if raycast hit an object that should be ignored
foreach (string s in seeThroughTags)
{
if (h.collider.tag == s)
{
hitVisible = false;
break;
}
}
}
else
{
hitVisible = false;
}
if (hitVisible)
{
hit = h;
break;
}
}
if (hit.collider)
{
if (hit.collider.gameObject == target || hit.collider.transform.IsChildOf(target.transform))
{
// Turret has line of sight to player, rotate to look at the player
RotateToFacePoint(target.transform.position);
// Is the target close to directly in front of the turret?
if (angleDegreesToPlayer <= 5.0f)
{
if (!((state == TURRET_BEHAVIOUR_STATE.PreparingFire) || (state == TURRET_BEHAVIOUR_STATE.Firing)))
{
// Warm up the turret
state = TURRET_BEHAVIOUR_STATE.PreparingFire;
Debug.Log("Warming up turret");
StartCoroutine(WarmUpGun());
}
}
TryShoot();
}
else
{
StopShooting();
}
}
else
{
StopShooting();
}
}
else
{
StopShooting();
}
}
else
{
StopShooting();
}
}
}
