Using enemy count static variable?

Unity Courses Talk
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1

Wouldn’t keeping an enemy count static variable be more efficient than looping through all the Position objects and checking their children each frame ?
The static variable would just increase or decrease based on enemy being created or destroyed and then we can just spawn a fresh bunch when the count reaches 0.

1 Like
2

Probably, as it was the way they did in the previous game. I think the looping is just to teach this is possible. Who knows, maybe someone else’s future game needs to loop on all children of a game object for a non-trivial action, and then they’ll remember this lesson.

1 Like
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Yea, i think that’s the case

4

EnemyFormation

void SpawnEnemies(){
        foreach (Transform child in transform)
        {
            GameObject enemy = Instantiate(enemyPrefab, child.transform.position, Quaternion.identity) as GameObject;
            enemy.transform.parent = child;
            enemiesCount++;
        }
    }

public void enemyKilled(){
        Debug.Log("One down!");
        enemiesCount--;
        if(enemiesCount == 0){
            Debug.Log("Oh no, again!");
            SpawnEnemies();
        }
    }

ENEMY

 void OnTriggerEnter2D(Collider2D collider){
    Projectile laserShot = collider.gameObject.GetComponent<Projectile>();
    if (laserShot){
        health -= laserShot.GetDamage();
        laserShot.Hit();

        if (health <= 0.0f) {
            GetComponentInParent<EnemySpawner>().enemyKilled();
            Destroy(gameObject);
        }
    }
}

Maybe this is what are you talking about :slight_smile:

5

This definitely makes more sense to me!

6

Both ways are correct, in the other hand… his way is going to be used later on the course. So i think you should keep working like he is doing here, you wont find any trouble following him :slight_smile: