Object Spawner

Object Spawner

// This script will spawn an instance of a prefab from a random spawn position.
// Create an ObjectSpawner game object and add this script to it.
// Create one or more child game objects and set each transform to the position you'd like to spawn objects from.

using UnityEngine;

public class ObjectSpawner : MonoBehaviour
{
    [SerializeField] float spawnDelay = 0.3f;
    [SerializeField] GameObject objectPrefab;
    [SerializeField] Transform[] spawnPoints;
    float nextTimeToSpawn = 0f;

    void Update()
    {
        if (nextTimeToSpawn <= Time.time)
        {
            SpawnObject();
            nextTimeToSpawn = Time.time + spawnDelay;
        }
    }

    void SpawnObject()
    {
        int randomIndex = Random.Range(0, spawnPoints.Length);
        Transform spawnPoint = spawnPoints[randomIndex];
        Instantiate(objectPrefab, spawnPoint.position, spawnPoint.rotation);
    }
}

// Version that automatically gets spawn points from the ObjectSpawner's child objects, while not including itself
//public class Spawner : MonoBehaviour
//{
//    float spawnDelay = 1f;
//    [SerializeField] GameObject objectPrefab;
//    [SerializeField] List<Transform> spawnPoints;
//    float nextTimeToSpawn = 0f;

//    void Start()
//    {
//        spawnPoints.AddRange(GetComponentsInChildren<Transform>());
//        spawnPoints.Remove(transform);
//    }
//    void Update()
//    {
//        if (nextTimeToSpawn <= Time.time)
//        {
//            SpawnObject();
//            nextTimeToSpawn = Time.time + spawnDelay;
//        }
//    }

//    void SpawnObject()
//    {
//        int randomIndex = Random.Range(0, spawnPoints.Count);
//        Transform spawnPoint = spawnPoints[randomIndex];
//        Instantiate(objectPrefab, spawnPoint.position, spawnPoint.rotation);
//    }
//}