Question about this script,

Hello everyone
I have a script to spawn the enemy, how can I get it to increase the spawn over time? and also not exceeding certain amount? if there's any tutorial or anyone can help would be great

here's the code.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class EnemySpawningScript : MonoBehaviour {
5.    
6.     public GameObject [] enemies;
7.     int enemyNo;
8.     public float maxPos = 2.5f;
9.     public float delayTimer = 0.5f;
10.     float timer;
11.    
12.     void Start () {
13.         timer = delayTimer;
14.        
15.     }
16.    
17.     void Update () {
18.        
19.         timer -= Time.deltaTime;
20.         if (timer <=0)
21.         {
22.             Vector3 enemyPos = new Vector3(Random.Range(-2.8f, 2.8f), transform.position.y, transform.position.z);
23.             enemyNo = Random.Range (0,28);
24.             Instantiate (enemies[enemyNo], enemyPos, transform.rotation);
25.             timer = delayTimer;
26.         }
27.     }
28. }

 

I've never done this but my immediate thought would be to do something like (note, out-of-head and untested):

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class EnemySpawningScript : MonoBehaviour {
5.  
6.     public GameObject [] enemies;
7.     int enemyNo;
8.     public float maxPos = 2.5f;
9.     private float lastSpawnTime;
10.     private float spawnDelay = 5f; // starting spawn delay, once every 5 second
11.     private float minSpawnDelay = 0.5f; // min delay between spawns, currently 2 times per second
12.     private float spawnDelayAdjustmentFactor = 0.9f; // value to multiply the spawnDelay each time.
13.  
14.     //
15.     // Note the spawnDelayAdjustmentFactor could be a value that you subtract from the spawnDelay
16.     // instead of multiplying - it just depends on how you want it to behave.
17.     //
18.  
19.     void Start () {
20.         lastSpawnTime = 0;//Time.time;      
21.     }
22.  
23.     void Update () {
24.      
25.         float timeSinceLastSpawn = Time.time - lastSpawnTime;
26.         if (timeSinceLastSpawn >= spawnDelay)
27.         {
28.             lastSpawnTime = Time.time;
29.  
30.             if(spawnDelay > minSpawnDelay)
31.             {
32.                 spawnDelay = spawnDelay * spawnDelayAdjustmentFactor;
33.                 if(spawnDelay < minSpawnDelay)
34.                 {
35.                      spawnDelay = minSpawnDelay;
36.                 }
37.             }
38.  
39.             Vector3 enemyPos = new Vector3(Random.Range(-2.8f, 2.8f), transform.position.y, transform.position.z);
40.             enemyNo = Random.Range (0,28);
41.             Instantiate (enemies[enemyNo], enemyPos, transform.rotation);            
42.         }
43.     }
44. }

 

Gonna try it and be with you thanks a bunch in advance!!

 

Thank you very much for you help really appreciated but I'm really bad with math, which is why I'm not sure if what I did was right, I wanted to reduce the spawn time every a min and a half by 1 second until it goes down to a second and half per spawn won't go below that so I did this to your adjustment on my script not sure if that's right though can you have a look ?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class SpawningTimerForIncreasingSpawnRate : MonoBehaviour {
5.  
6.        
7.     public GameObject [] enemies;
8.     int enemyNo;
9.     public float maxPos = 2.5f;
10.     private float lastSpawnTime;
11.     private float spawnDelay = 3f; // starting spawn delay, once every 5 second
12.     private float minSpawnDelay = 90f; // min delay between spawns, currently 2 times per second
13.     private float spawnDelayAdjustmentFactor = 0.1f; // value to multiply the spawnDelay each time.
14.        
15.         //
16.         // Note the spawnDelayAdjustmentFactor could be a value that you subtract from the spawnDelay
17.         // instead of multiplying - it just depends on how you want it to behave.
18.         //
19.        
20.     void Start ()
21.     {
22.         lastSpawnTime = 0;//Time.time;    
23.     }
24.        
25.  
26.     void Update ()
27.     {
28.            
29.         float timeSinceLastSpawn = Time.time - lastSpawnTime;
30.         if (timeSinceLastSpawn >= spawnDelay)
31.             {
32.             lastSpawnTime = Time.time;
33.                
34.             if(spawnDelay > minSpawnDelay)
35.             {
36.                 spawnDelay = spawnDelay - spawnDelayAdjustmentFactor;
37.                 if(spawnDelay < minSpawnDelay)
38.                 {
39.                     spawnDelay = minSpawnDelay;
40.                 }
41.             }
42.  
43.                 Vector3 enemyPos = new Vector3(Random.Range(-2.8f, 2.8f), transform.position.y, transform.position.z);
44.                 enemyNo = Random.Range (0,27);
45.                 Instantiate (enemies[enemyNo], enemyPos, transform.rotation);          
46.             }
47.         }
48.     }

Thanks again.