/// <summary>
/// Spawns a new target on the surface of the icosphere.
/// </summary>
private void SpawnTarget()
{
// Randomly select a new spawn point not equal to the previous point.
_lastSpawnPointIndex = (Random.Range(1, _spawnPoints.Length / 2) + _lastSpawnPointIndex) % _spawnPoints.Length;
// Create a new target object at that point, parented to the controller.
GameObject target = Instantiate(_targetPrefab, transform);
target.transform.position = _spawnPoints[_lastSpawnPointIndex] * 0.5f;
// Subscribe to the new target's collection event.
TargetController targetController = target.GetComponent <TargetController>();
targetController.Collected += OnCollected;
// Pass on the reference rotation from calibration to the target controller.
targetController.ReferenceRotation = _referenceRotation;
}
/// <summary>
/// Invoked when a target is collected.
/// </summary>
/// <param name="target">The target that was collected</param>
private void OnCollected(TargetController target)
{
// Spawn a new target after a delay.
Invoke("SpawnTarget", _spawnDelay);
}