Switch

i want to know how to make a switch. for example, when i step on an object, a fire's particle emitter will turn on.
the object and fire are 2 different gameobjects.

 

http://docs.unity3d.com/ScriptReference/Collider.OnTriggerEnter.html

 

my problem is how can i change the fire's particle emitter when the script is in the object(switch).

 

GetComponent<ParticleEmitter>().emit

 

i have many fire particles, how do the script know which to turn on or off?

 

Make the switch like this. It just says "I've been used".

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class TriggerScript : MonoBehaviour {
5.  
6.     #region Events
7.     public delegate void EventHandler();
8.     public event EventHandler TriggerUsed;
9.     #endregion
10.  
11.     void OnTriggerEnter(Collider collider)
12.     {
13.         // Sends event when trigger is used.
14.         if (TriggerUsed != null) TriggerUsed();
15.     }
16.  
17. }

Then on your flame objects add this script. It lets you choose which triggers activate it.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class FireObjScript : MonoBehaviour {
6.  
7.     public ParticleEmitter flameParticle;
8.  
9.     public List<TriggerScript> listenToTheseTriggers;
10.  
11.     //============================================
12.     // EVENTS
13.     //============================================
14.  
15.     #region Event Subscriptions
16.     void OnEnable()
17.     {
18.         foreach (TriggerScript triggerScript in listenToTheseTriggers)
19.             triggerScript.TriggerUsed += OnTriggerUsed; // Run OnTriggerUsed when TriggerUsed happens
20.     }
21.     void OnDisable()
22.     {
23.         foreach (TriggerScript triggerScript in listenToTheseTriggers)
24.             triggerScript.TriggerUsed -= OnTriggerUsed;
25.     }
26.     #endregion
27.  
28.     //============================================
29.     // FUNCTIONS
30.     //============================================
31.  
32.     void TurnOnFlame()
33.     {
34.         flameParticle.emit = true;
35.     }
36.  
37.     //============================================
38.     // EVENT RECEIVERS
39.     //============================================
40.  
41.     void OnTriggerUsed()
42.     {
43.         TurnOnFlame();
44.     }
45.  
46. }

 

I'm sorry for asking you this but, can you translate it to javascript code?

 

I think you should do a a little more research into programming and not just unity.
As unity gives you the tools you need to build a game, but you also need a basic understanding of programming.

It does not take much to convert between JS and C#.. they are in many ways the same although C# is more strict and in my opinion a better language..

You may be better off just learning C# if your going to code in unity.. I think most people on here use C# now days.

 

can you convert it to javascript? so that i would understand how it works? or at least tell me how to address other object's component?

 

nevermind, i found a way. i tagged the object and then use GameObject.FindWithTag. Thanks for the effort Stardog.