Displaying a GUI Label using the Oculus Rift

Unity Engine
1

Hello,

I’ve created a simple timer script (to count down from X seconds) and I want to display the value to the user as he/she plays through the level.

I’ve tried adding the script to both eyes of the OVRCameraRig, and adding it to each eye individually but no luck. I must be doing something wrong.

Any suggestions?

Below is the Timer.cs I have written. I have tested this script on the standard Unity camera without issue.

using UnityEngine;
using System.Collections;

public class Timer : MonoBehaviour {

    public float startTime;
    private string currentTime;

    public GUISkin skin;

    // Use this for initialization
    void Start () {
   
    }
   
    // Update is called once per frame
    void Update ()
    {
        startTime -= Time.deltaTime;
        currentTime = string.Format("{0:0.0}",startTime);
        print(currentTime);

        if (startTime <= 0)
        {
            startTime = 0;
            print("GAME OVER!");
            Application.LoadLevel("game_over");
        }
    }

    void OnGUI()
    {
        GUI.Label(new Rect(50, 10, 200, 45), currentTime);
    }
}
2

I’ve managed to get it displaying in the top left but it’s not attached to the Oculus camera’s themselves. Any attempt to centre the timer results in it no longer being visible (I assume it’s “behind” the Oculus views)

Here’s a large screenshot of it in action.

1902×1035 469 KB

Another small issue is that, when attached to the Oculus player as per the screenshot, the timer will bug out after 3/4 seconds and the text becomes a blur.

3

What unity are you using?

4

Unity Free 4.5.5p5.

5

If I were you I’d update to 4.6 and use the new UI system. You can create a canvas in world space, which you can then add as a child of your OVR rig and place a short distance in front of you.

You’ll struggle using the old onGUI, and the update is free so hopefully that’s a viable option for you

2 Likes
6

Thank you. I have just updated to 4.6.1p4. Do you have any material regarding how to go about using the new GUI system? Specifically, appending a canvas via a script, as I was originally doing using the onGUI() method?

7

Some good videos here…

Or you can check out the docs in Unity Editor. Go to Help->Unity Manual->UI

8

Thank you for all the help. I now have my Timer displaying correctly.

This is the code that I am using. The //commented code refers to the OP which I have left in.

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

public class Timer : MonoBehaviour {

    public float startTime;
    private string currentTime;

    Text text;

    public GUISkin skin;

   
    void Awake () {
        text = GetComponent<Text>();

      
    }
   
    // Update is called once per frame
    void Update ()
    {
        startTime -= Time.deltaTime;
        currentTime = string.Format("{0:0.0}",startTime);
        print(currentTime);

        text.text = "Time Left: "+currentTime;

        if (startTime <= 0)
        {
            startTime = 0;
            print("GAME OVER!");
            Application.LoadLevel("game_over");
        }
    }

    //void OnGUI()
    //{
      //  GUI.Label(new Rect(10, 10, 200, 45), currentTime);
   // }
}