enemies will not spawn for some reason

Unity Engine
1

Good evening guys,

I have used a spawn script that i know works but for some reason my enemies are not spawning. I have created the empty gameobject and renamed it spawnpoint and duplicated that to create another one, i have then dragged this code on top of it:

               using UnityEngine;
              using System.Collections;


              public class spawnenemy : MonoBehaviour
               {


    
    	//array of our spawn points
    	public GameObject[] SpawnPoints;
    	//variables for spawn delay
    	private float nextSpawn = 0;
    	public float spawnRate = 2;
    	 //amount of enemies
                  public int EnemiesAmount = 20;


 


    	//Enemy prefab
    	public GameObject ZombiePrefab;


    


    


    


    	// Use this for initialization


    	void Start () {


    


    	}


    


    	// Update is called once per frame


    	void Update () {


        SpawnPoints = GameObject.FindGameObjectsWithTag("spawnpoint");


        FirstWave();


    	}


    



    	void FirstWave(){


        for (int i=0; i<EnemiesAmount; i++)
		{


            if (Time.time > nextSpawn  EnemiesAmount > 0)
			{


            nextSpawn = Time.time + spawnRate;


            GameObject pos = SpawnPoints[Random.Range (0, SpawnPoints.Length)]; 


            Instantiate(ZombiePrefab, pos.transform.position, pos.transform.rotation);


            EnemiesAmount--;


            }


        }


   }


}

for some reason they are not generating, i have made sure i dropped the enemy prefab on it in the inspector but it does not want to move, i have added the lookat function to the enemy so when it does spawn it looks for the player, can someone suggest where i may be going wrong here. I have checked the inspector and the prefab is on there i cannot understand why they are not spawning the ememy wierd, am i missing something obvious.

kind regards

David :wink:

2

The tag of the spawn points needs to be “spawnpoint” not the name of the gameObject. Also, this shouldn’t work SpawnPoints = GameObject.FindGameObjectsWithTag("spawnpoint"); Create a loop which goes through checking for all the gameObject with the tag “spawnpoint” and add it to the array. You’re almost there with what you already have.

3

I’d scrap this and start over. In Start(), locate and store all your spawnpoints (not in Update as that runs constantly). Then, InvokeRepeating() a function for doing the spawning (similar content to what you’re attempting with that Firstwave function).

EDIT: Minus the Time stuff - you shouldn’t need any of that stuff and it’s not going to work the way you’re implementing it at the moment.

EDIT2: Oh! And…

GameObject[] SpawnPoints = GameObject.FindGameObjectsWithTag("spawnpoint") as GameObject[];

…is just fine.

4

Sorry that was very disjointed :slight_smile:

Maybe something like this?

using UnityEngine;

public class SpawnEnemy : MonoBehaviour
{
    public int enemiesMax = 20;
    public float spawnRate = 2;
    public GameObject zombiePrefab;
    private GameObject[] SpawnPoints;

    private void DoSpawnEnemy()
    {
        if (enemiesMax > 0)
        {
            GameObject pos = SpawnPoints[Random.Range(0, SpawnPoints.Length)];
            Instantiate(zombiePrefab, pos.transform.position, Quaternion.identity);
            enemiesMax--;
        }
        else
            CancelInvoke("DoSpawnEnemy");
    }

    private void Start()
    {
        SpawnPoints = GameObject.FindGameObjectsWithTag("spawnpoint") as GameObject[];
        InvokeRepeating("DoSpawnEnemy", spawnRate, spawnRate);
    }
}
5

Hi Steve,

is “DoSpawnEnemy”, another gameobject or just a string, can you elaborate on this construction of this please,

kind regards

6

DoSpawnEnemy is a method, and its invoked using InvokeRepeating.

7

HI eLITEmOSSY,

I applied the code to the spawnpoint and it has been tagged but I am only getting one enemy appearing and there are no other enemies being created any ideas what may be going wrong.