How do i make a button appear when my FPSController walks through a tigger collider?

Questions & Answers
1

I followed a tutorial to make UI text appear over an object when I enter a cube collider and disappear when I exit, is there a way to make the same thing happen with a UI button? The button is supposed to open a window with information on the object and a short turnaround video. I’m using the standard FPSController with an Xbox Gamepad as input. Will i still be able to “click” the button by pressing A if i haven’t got a mouse cursor to hover over the button?

Below is the code from the tutorial to make the UI text appear. I’m fairly new to coding in general, working in C#.

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class fadeEffects : MonoBehaviour {

    public string myString;
    public Text myText;
    public float fadeTime;
    public bool displayInfo;

    void Start ()
    {
        myText = GameObject.Find("Text").GetComponent<Text>();
        myText.color = Color.clear;

    }

    void Update ()
    {
        FadeText();

     
    }

    void OnTriggerEnter ()
    {
        displayInfo = true;
    }

    void OnTriggerExit ()
    {
        displayInfo = false;
    }

    void FadeText ()

    {
        if(displayInfo)
        {
            myText.text = myString;
            myText.color = Color.Lerp(myText.color, Color.white, fadeTime * Time.deltaTime);
            

        }

        else
        {
            myText.color = Color.Lerp(myText.color, Color.clear, fadeTime * Time.deltaTime);
        }

    }
    
   
}
4

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

 public class fadeEffects : MonoBehaviour {
    public Button btn;

    void Start(){
        btn = Gameobject.Find("Button").GetComponent<Button>();
    }

    void OnTriggerEnter(Collider other){
        if(other.gameObject.tag == "THE TAG OF GAMEOBJECT THE TRIGGER IS SEARCHING FOR"){
            btn.gameObject.Setctive(true);
        }
    }
}
2

Hey @AaronDiscProg !

Take a look at the documentation for trigger callbacks:

(If you’re using MonoDevelop, you can put the cursor on any method/variable name and press Ctrl+’ to bring up the documentation!)

The methods need to take a parameter, to make sure they’re being called, you can also write Debug.Log("Here!"); inside the functions to verify.

3

Hi, 1st of all declare a button and give it a name in your script
Button MyButton;. Second you have to atach it to a game object as you did for the text :
myText = GameObject.Find("Text").GetComponent<Text>();
I precise that if your object is inside a canvas you have to write all the URL for example:

“myText=GameObject.Find(“Canvas/Text”)…”

Now to enable a game object you have to write this code :

MyButton.gameObject.SetActive(true); // this is for enable

// if you want to disable it write this code

MyButton.gameObject.SetActive(false);

For your condition i cannot help you i don’t know how to use colliders but there is alot of tutorial on the web . I hope this will help you and sorry for my bad english @AaronDiscProg

5

Figured it out, thanks for the replies. In the end I made the button a child of an image and then i was able to fade the image from clear to visible as the character entered a collision trigger. The complicated part was making it clickable when selected and joystick button 0 is pressed. i have a temporary fix for that but I’m working on a better method, the current method disrupts the “first selected” option on the event system.