Show GUI on collision

Questions & Answers
1

Hi everyone, I have a simple script here I’m having a small problem with:

var showGUI = false;
var launcherUpgrade1 : Texture2D;


function OnTriggerEnter (col : Collider) {
        

if(col.name == "Player" && GUI.enabled == false) {
GUI.enabled = true;
}

if(GUI.enabled == true) {
OnGUI();
}

else if(GUI.enabled == false) {

return;
}
}


function OnGUI () {
   GUI.Box (Rect (10,10,100,50), GUIContent("400", launcherUpgrade1));
}

So basically when the player collides with the gameobject this script is attached to I want it to show the GUI. However, the GUI is automatically being shown as soon as the game starts. How can I fix this?

2

You misunderstand GUI.enabled. It’s not for that. It’s for “greying out” UI elements. Try this:

var showGUI = false;
var launcherUpgrade1 : Texture2D;

function OnTriggerEnter (col : Collider) {
    if(col.name == "Player")
        showGUI  = true;
}

function OnGUI () {
   if (showGUI) {
       GUI.Box (Rect (10,10,100,50), GUIContent("400", launcherUpgrade1));
       ... rest of the GUI ...
   }
}

Or, if you really do want it to grey out:

function OnGUI () {
   GUI.enabled = showGUI;
   GUI.Box (Rect (10,10,100,50), GUIContent("400", launcherUpgrade1));
}
3

make a script and name it

GUIControllerScript.cs

using UnityEngine;

using System.Collections;

public class GUIControllerScript : MonoBehaviour {

public bool ShowGUI = false;

void Start () 

{

}

void Update () 
{
    if (ShowGUI)
    {
        G_U_I.Instance.enabled = true;
    }
    if (!ShowGUI)
    {
        G_U_I.Instance.enabled = false;
    }
}

void OnTriggerEnter(Collider col)
{
    if (col.name == "Player")
    {
        ShowGUI = true;
    }
}

}

and this one name it

G_U_I.cs

using UnityEngine;

using System.Collections;

public class G_U_I : MonoBehaviour {
public static G_U_I Instance;

void Start () 
{
    Instance = this;
}

void Update () 
{

}

void OnGUI()
{
    //Put ur GUI Script here
}

}