How do I make something happen every 3 or any amout of seconds?

i am a begginer and i need help on this

 

You can use this. Write a routine and call it as shown in the example:
https://docs.unity3d.com/ScriptReference/MonoBehaviour.InvokeRepeating.html

You can set time and repeatRate to the same amount if you want to call your routine after 3 seconds each 3 seconds:

Code (CSharp):

1. void Start()
2. {
3.    InvokeRepeating("YourMethod", 3.0f, 0.3f);
4. }

 

It did not work maybe if i show my script to you then you might be able to fix it.

 

if time % 3 == 0

 

Yes give it a try.

 

Code (CSharp):

1.  
2. using UnityEngine;
3.  
4. public class EnemySpawner : MonoBehaviour
5. {
6.     public float random = 1f;
7.     public GameObject enemyPrefab;
8.     void Start()
9.     {
10.         InvokeRepeating("Update", 3.0f, 100000f);
11.  
12.     }
13.  
14.  
15.  
16.     void Update()
17.     {
18.         if (random <= 1)
19.         {
20.            
21.             Instantiate(enemyPrefab, transform.position, Quaternion.identity);
22.         }
23.     }
24. }
25.  

 

I sent the code

 

Dont use the name Update here for the Spawn method name because this is a special monobehavior method. What the float random means?

This code spawn a new enemy each 3 seconds (but at same position):

Code (CSharp):

1. using UnityEngine;
2. public class EnemySpawner : MonoBehaviour
3. {
4.     public float random = 1f;
5.     public GameObject enemyPrefab;
6.  
7.     void Start()
8.     {
9.         // Call the method Spawn every 3 seconds
10.         InvokeRepeating("Spawn", 3.0f, 3.0f);
11.     }
12.  
13.     void Spawn()
14.     {
15.       Instantiate(enemyPrefab, transform.position, Quaternion.identity);
16.     }
17.  
18.    void Update()
19.    {
20.       // Update is called every frame, if the MonoBehaviour is enabled.
21.       // Update is the most commonly used function to implement any kind of game script.
22.       // Not every MonoBehaviour script needs Update.
23.    }
24. }

 

That will not work at all. The game could easily jump from 2.97 seconds straight to 3.03 seconds or something like that, and then this condition wouldn't trigger.

 

time not Time.*
you increment elsewhere manually for more control

 

I'm not sure exactly what you have in mind, but every option I can think of either still has the original issue or could be simplified by eliminating the "if (time % 3 == 0)" part.

The normal way to do something every 3 seconds with an accumulator variable would be something like:

Code (CSharp):

1. void Update()
2. {
3.     accumulatedTime += Time.deltaTime;
4.     while (accumulatedTime >= timeBetweenEvents)
5.     {
6.         accumulatedTime -= timeBetweenEvents;
7.         DoEvent();
8.     }
9. }

(With a few possible minor variations depending on how you want to handle the "overshoot", none of which involve a % operator.)

Testing "if (time % 3 == 0)" really cannot possibly be a good idea unless "time" is an int, rather than a float (not so much because of the % part, but the == part; you should almost never test floats for exact equality). So you might do something like that in a turn-based game where "time" increments by 1 each turn. But if the thing you care about is elapsed seconds (not game turns), I really can't think of any sensible scenario where your time variable would be an int.