/// <summary>
/// Called when an enemy should fire. If there are already MAX_ENEMY_MISSILES, then no firing will
/// take place. Checks the ACTIVE CHILD count, since pooling is used to spawn/despawn (activeate/deactive)
/// enemy missiles.
/// </summary>
/// <param name="enemy"></param>
private bool enemyFireMissile(EnemyController enemy)
{
int activeCount = 0;
bool fired = false;
for (int cnt = 0; cnt < EnemyMissileContainer.childCount; cnt++)
{
if (EnemyMissileContainer.GetChild(cnt).gameObject.activeInHierarchy == true)
{
activeCount++;
}
}
// Fire a missile from the invader if the maximum number of active missiles don't already exist.
if (activeCount < GameGlobals.MAX_ENEMY_MISSILES)
{
GameObject missile = RFObjectPool.Spawn(EnemyMissilePrefab, Vector3.zero, Quaternion.identity);
if (missile != null)
{
MissileController mc = missile.GetComponent <MissileController>();
mc.EnemyFired(enemy.gameObject);
fired = true;
}
}
return(fired);
}
// Update is called once per frame
void Update()
{
Vector3 pos = transform.position;
pos.y += (yvel * Time.deltaTime);
transform.position = pos;
// Spawn a trace. Traces have a limited lifetime; they don't actully move--just shrink down and despawn
// However, there can be quite a few on screen at once, so they are spawned/despawed with an object pool
if (dropTime <= 0.0f)
{
GameObject trace = RFObjectPool.Spawn("MissileTrail", pos, Quaternion.identity);
dropTime = TracerSpawnDelay;
}
dropTime -= Time.deltaTime;
if (pos.y > GameGlobals.MISSILE_CONSTRAINT_Y || pos.y < -GameGlobals.MISSILE_CONSTRAINT_Y)
{
killMissile();
}
}