Make game object (Text) dissapear or not visible through other objects

Hi,

I'm working on a game where I have some floating instructions right as the game starts. Once the FPS player walks through the text and down a hallway, it is visible even after they have turned a corner. I have a complex series of tunnels and the text is visible as long as you are facing it. I have tried using a script to fade it out but i keep getting errors. I'm a total noob so I'm sure it is something simple I'm missing. Any help is appreciated.

I used a text mesh to make the floating text. And i tried this code to make it dissapear. My game object is called FloatingText1 in case you need to know.

Code (CSharp):

1.  
2. using UnityEngine;
3. using UnityEngine.UI;
4. using System.Collections;
5. public class FloatingTextFade : MonoBehaviour
6. {
7. // can ignore the update, it's just to make the coroutines get called for example
8.     void Update()
9.     {
10.         if (Input.GetKeyDown(KeyCode.Q))
11.         {
12.             StartCoroutine(FadeTextToFullAlpha(1f, GetComponent<Text>()));
13.         }
14.         if (Input.GetKeyDown(KeyCode.E))
15.         {
16.             StartCoroutine(FadeTextToZeroAlpha(1f, GetComponent<Text>()));
17.         }
18.     }
19.     public IEnumerator FadeTextToFullAlpha(float t, Text i)
20.     {
21.         i.color = new Color(i.color.r, i.color.g, i.color.b, 0);
22.         while (i.color.a < 1.0f)
23.         {
24.             i.color = new Color(i.color.r, i.color.g, i.color.b, i.color.a + (Time.deltaTime / t));
25.             yield return null;
26.         }
27.     }
28.     public IEnumerator FadeTextToZeroAlpha(float t, Text i)
29.     {
30.         i.color = new Color(i.color.r, i.color.g, i.color.b, 1);
31.         while (i.color.a > 0.0f)
32.         {
33.             i.color = new Color(i.color.r, i.color.g, i.color.b, i.color.a - (Time.deltaTime / t));
34.             yield return null;
35.         }
36.     }
37. }
38.  

 

Always copy and post the error so we get a reference to the line number.

But if this isn't on the GameObject with the Text component, then GetComponent<Text>() will return null.

And since you said you used a Text Mesh, then that is the issue. A Text Mesh isn't the same as a Text component.

And if you're using TextMeshPro that's different also. You have to get the correct component.

 

Ok, I used a text mesh...which component should I have used to do this? All I wanted was a set of instructions that said "blah blah blah...go this way and do this..blah blah blah" and then a second set of instructions floating further down the tunnel saying "ok, you did this, now you are ready to do this..."

I found a tutorial that said text mesh was a way to do that which is why I used that one.

Any help is appreciated.

 

While I suggest TextMeshPro since it's free, it doesn't matter what you used. You just need to get the right component. If you use a TextMesh, you need to get the TextMesh component, not a Text component.

 

Ok, so you mean I should change the code to look like this:

Code (CSharp):

1. if (Input.GetKeyDown(KeyCode.Q))
2.         {
3.             StartCoroutine(FadeTextToFullAlpha(1f, GetComponent<TextMesh>()));
4.         }
5.         if (Input.GetKeyDown(KeyCode.E))
6.         {
7.             StartCoroutine(FadeTextToZeroAlpha(1f, GetComponent<TextMesh>()));

 

Yes, and just make sure your methods take a TextMesh as a parameter and not a Text.

 

Sounds like a plan...appreciate the help. Will give it a try and see what happens.