How to build a wave spawner that spawns 3 enemies with independent timers?-CodePudding

I am currently building a wave base game in Unity, but I am currently stuck. My goal is to have 3 enemies spawning at different rates independently. I have one big class that manages the Waves and in which I store data like Enemy1Count (How many Enemy1 spawn), Enemy1Rate (At which rate they spawn). I want the first enemy to spawn every 2 seconds, the second enemy to spawn every 3 seconds and the third enemy to spawn every 5 seconds, but I can't make that happen without the timers affecting each other. Do you have any idea how I could solve that? (I would like to manage all the data for the 3 enemies within one class)

CodePudding user response：

This seems like a problem where you can definitely use Unity Coroutines, you should be able to run a coroutine per enemy so it will spawn a wave after X amount of time.

Something like this should work for your logic

Coroutine c1, c2,c3;
bool keepSpawningEnemies = true;
Start(){
        c1= StartCoroutine(SpawnWave(enemy1, 3.0f));
        c2= StartCoroutine(SpawnWave(enemy2, 10.0f));
        c3= StartCoroutine(SpawnWave(enmey3, 5.0f));

}

IEnumerator SpawnWave(Enemy enemy, float timeBetweenWaves)
{
   while(keepSpawningEnemies ) {
      SpawnWaveLogic(enemy);
      yield return new WaitForSeconds(timeBetweenWaves);
  }
}


Update() {

  // logic to check if we need to keep spawning
  // At some point you would run
  keepSpawningEnemies = false;

}

CodePudding user response：

I think the simplest way is to create a component that is responsible for handling just one wave, then add three instances of that component to the scene.

public class Spawner : MonoBehaviour
{
    [SerializeField] private Object prefab;
    [SerializeField] private float spawnInterval;

    private WaitForSeconds waitForNextSpawn;

    private void Awake() => waitForNextSpawn = new WaitForSeconds(spawnInterval);
    private void OnEnable() => StartCoroutine(SpawnLoop());
    private void OnDisable() => StopCoroutine(SpawnLoop());

    private IEnumerator SpawnLoop()
    {
        while(enabled)
        {
            yield return waitForNextSpawn;
            Instantiate(prefab);
        }
    }
}