A Simple Spawning System Code.

Questions & Answers
1

This is what i have so far but im planing on change the code. this code help’s spawn the car but it spawns at a specific time so like every 5 secs or so. Im trying to make it so the car only spawn one at a time until it despawns the next one will spawn after it.

using UnityEngine;
using System.Collections;

public class CarController : MonoBehaviour {

	public GameObject enemy;
	public Vector3 spawnValues;
	public int enemyCount;
	public float spawnWait;
	public float startWait;
	public float waveWait;
	
	void Start ()
	{
		StartCoroutine (SpawnWaves ());
	}
	
	IEnumerator SpawnWaves ()
	{
		yield return new WaitForSeconds (startWait);
		while (true)
		{
			for (int i = 0; i < enemyCount; i++)
			{
				Vector3 spawnPosition = new Vector3 (Random.Range (-spawnValues.x, spawnValues.x), spawnValues.y, spawnValues.z);
				Quaternion spawnRotation = Quaternion.identity;
				Instantiate (enemy, spawnPosition, spawnRotation);
				yield return new WaitForSeconds (spawnWait);
			}
			yield return new WaitForSeconds (waveWait);
		}
	}
}
2

Two ways you could do this:

  1. Have a static variable in the Car script which increments when a Car is Start()ed, and decrements it when the Car is Destroy()ed. Then the spawner can just look at the Car counter to decide if it wants to spawn or wait.
  2. Have only one Car & recycle it. Instead of destroying it, just call gameObject.SetEnabled(false) to make it vanish. The spawn script can just check if the Car is obj.IsActive and recycle it if it is not.

The second is better, but will only work if you want one car. If you want more than one, go to the unity life training achieve and look up Object Pooling.