How do i merge these things?

Question

Hey, everyone! i'm working on a talking system, for a tutorial level. The aim is to activate the GUI elements in the script when you touch a cube with is trigger on. the script however right now, consists of two parts that need to be one: the part where the trigger outputs an action, and the part with the actual GUI:

 public var text = "box text here";
 public var NPCname = "NPC name here";
 
     function OnTriggerEnter (other : Collider) {
         print ("Test");
         
     }
     
 function Start () {
 
 
 
 }
     function OnGUI() {
          GUI.Box(Rect(Screen.width / 6,Screen.height / 1.3,Screen.width / 1.5,Screen.height / 4),"Test 2");


     }

Now, the first part makes the log print Test, that works fine, so we've got a working trigger. the second part is the setup for the GUI itself. my question is, what string of code allows me to have the trigger activate the GUI?

Answer 1

Best Answer

Answer by AlucardJay · May 21, 2014 at 08:38 PM

I strongly advice you do some tutorials to get the basics of programming, and learn what kinds of commands and variables are available to use.

Use a boolean that changes state based on if an object is in the trigger zone

 var inTriggerZone : boolean = false;
 
 function OnTriggerEnter (other : Collider) {
     inTriggerZone = true;
 }
 
 function OnTriggerExit (other : Collider) {
     inTriggerZone = false;
 }
 
 function OnGUI() {
     if ( inTriggerZone ) // this is the same as writing if(inTriggerZone==true)
     {
         GUI.Box(Rect(Screen.width / 6,Screen.height / 1.3,Screen.width / 1.5,Screen.height / 4),"Test 2");
     }
 }

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AlucardJay · May 21, 2014 at 08:40 PM 1

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Here is a list of tutorials to get you going :

Start at the bottom and work up : http://www.unity3dstudent.com/category/modules/
Unity Learn : http://unity3d.com/learn
the Unity Wiki : http://wiki.unity3d.com/index.php/Tutorials
A list of resources : http://answers.unity3d.com/questions/12321/how-can-i-start-learning-unity-fast-list-of-tutori.html

bolibob2 · May 21, 2014 at 08:42 PM 0

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Thanks, i am following tutorials, and i tried to write up some code from scratch myself as an exercise, but i couldn't find a tutorial for this specific thing... are you ok with it if i use this code?

AlucardJay · May 21, 2014 at 08:46 PM 0

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Yes of course, this was an example written for you.

The next thing to check would be what entered the trigger. Check an objects name :

 function OnTriggerEnter (other : Collider) {
     Debug.Log( other.gameObject.name + " has just entered the trigger" );
     if ( other.gameObject.name == "Player" ) // did an object named Player enter the trigger?
     {
         inTriggerZone = true;
     }
 }

you can use tags :

 if ( other.gameObject.tag == "Player" )

It all starts from here. Happy Coding =]

How do i merge these things?

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