Random Spawnpoint's

Hey i have a question

im new in the C# coding and im following a tutorial for a shooter game here on unity

and for the spawning of me enemies i have en pre writen script

Code (CSharp):

1. using UnityEngine;
2.  
3. public class EnemyManager : MonoBehaviour
4. {
5.     public PlayerHealth playerHealth;
6.     public GameObject enemy;
7.     public float spawnTime = 3f;
8.     public Transform[] spawnPoints;
9.  
10.  
11.     void Start ()
12.     {
13.         InvokeRepeating ("Spawn", spawnTime, spawnTime);
14.     }
15.  
16.  
17.     void Spawn ()
18.     {
19.         if(playerHealth.currentHealth <= 0f)
20.         {
21.             return;
22.         }
23.  
24.         int spawnPointIndex = Random.Range (0, spawnPoints.Length);
25.  
26.         Instantiate (enemy, spawnPoints[spawnPointIndex].position, spawnPoints[spawnPointIndex].rotation);
27.     }
28. }
29.  

this one but how can i change this script for random spawn point now i need to make a point in me scene en assign the enemy but a want it to chose a random location in the map

 

Code (csharp):

1.  
2.  
3. void Start() {
4.  
5. // set all spawnpoints to random positions
6. foreach (Transform sp in spawnPoints)
7. {
8.     sp.position = new Vector3( Random.Range( 0f, worldLenght), 0f, Random.Range( 0f, worldWidth));
9. }
10.  
11. InvokeRepeating ("Spawn", spawnTime, spawnTime);
12. }
13.  
14.  

Add the foreach-loop into your Start() function.
worldLenght and worldWidth should be float values of the dimensions of your terrain.

if you use the Unity Terrain as your world, you can get the world size by this script:

Code (csharp):

1.  
2.  
3. void Start() {
4.  
5.    // get the size of the terrain
6. Terrain t = GameObject.FindObjectOfType(typeof(Terrain)) as Terrain;
7. float worldLenght = t.terrainData.size.x;
8. float worldWidth = t.terrainData.size.z;
9.  
10.   // set all spawnpoints to random positions
11. foreach (Transform sp in spawnPoints)
12. {
13.     sp.position = new Vector3( Random.Range( 0f, worldLenght), 0f, Random.Range( 0f, worldWidth));
14. }
15.  
16. InvokeRepeating ("Spawn", spawnTime, spawnTime);
17. }
18.  
19.  

 

can i just copy paste that i me script en edit the x and y ?

Because when i try it gives a error Mathf does not contain RandomRange

 

Yes. Copy this into your Start() function.
Leave the rest of your code like it is. It is ok.

If you use the Unity Terrain, copy/paste the second script.

If you use a "self made" terrain (for example a big plane) you should use the first code and insert the x and y dimensions for worldLenght and worldWidth.

 

Oh. My mistake.

It is called Random.Range() and not Mathf.RandomRange.
I edited the code above to the correct spelling.
Now you can copy/paste it.

 

i dont know if it is a unilty terain i guess because it's a tutorial form unity

and i will try c:

 

when i try the code it only chose random ones but i want to do is to chose a ramdom loctation every spawn