Enemies on play

Hey

I need some advice on how I would go about spawning Eminem’s on play. For example when I press play and the game loads, I want thee to be 100 Eminem’s in play? What is the best way to do this?

 

First you should listen to the song "Spawn" by Eminem :

Spoiler

Little joke - i hope you can forgive me;-)!

I think the best way would be to create prefabs for the enemies you want to spwan and then create the enemies over enemy = GameObject.Instantiate(prefab).
Then you can set for example the rotation and position of the enemy via.
enemy.transform.position =
For random positions you can use the Random class.

 

You just made me laugh ! Haha I can forgive you.

So realistically I could just place them in the scene if I wanted to? But each time I play I would want them to appear in a different place. Hmm ok, where would I add the script to each prefab ? I am pretty new to unity so learning. Thank you for your response.

 

You could create a GameObject called for example EnemyManager or EnemySpawner in your scene. Create a script (same name or different) for example EnemySpawner.cs and attach it to the object,
In that you can spawn the enemies on start.

Code (CSharp):

1. public class EnemyManager : MonoBehaviour
2. {
3.     public Transform enemyPrefab;
4.     public int enemyCount = 100;
5.  
6.     // Use this for initialization
7.     void Start()
8.     {
9.         for (int i = 0; i < enemyCount; i++)
10.         {
11.             SpawnEnemy();
12.         }
13.     }
14.  
15.     private void SpawnEnemy()
16.     {
17.         var enemy = GameObject.Instantiate(enemyPrefab);
18.         enemy.transform.position = GetRandomEnemyPosition();
19.     }
20.  
21.     private Vector3 GetRandomEnemyPosition()
22.     {
23.         //Only example
24.         var position = Random.insideUnitCircle * 10;
25.         position.y = 0f;
26.         return position;
27.     }

It is up to you how you determine the positions.
In the example the enemies spawn in a circle with radius 10.
Hower they can still overlap each other.

There are many ways to determine a position. You have to find one which suits your game best.

 

When you want to spawn the enemies on play you could create a public method SpwanEnemies and call this one when the button is pressed instead of doing it in OnStart. Also clearing the remaining enemies before creating new ones.

Code (CSharp):

1.   public Enemy enemyPrefab;
2.         public int enemyCount = 100;
3.  
4.         public void SpawnEnemies()
5.         {
6.             ClearEnemies();
7.  
8.             for (int i = 0; i < enemyCount; i++)
9.             {
10.                 //Spwan enemies
11.             }
12.  
13.         }
14.  
15.         public void ClearEnemies()
16.         {
17.             var enemies = FindObjectsOfType<Enemy>();
18.             foreach (var enemy in enemies)
19.             {
20.                 Destroy(enemy.gameObject);
21.             }
22.         }

When you get performance issues you should inform you about pooling the enemies(dont destroy the old ones but reuse them)

 

Cool thank you so much I will try this! Thanks for the help.