change alpha of a gameobject?

Unity Engine
1

hi how can i change the alpha, but between time, for ex 1f of time ?

1 Like
2

heres my script for something like that

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
//using UnityEngine.SceneManagement;

public class Fade : MonoBehaviour
{
    public Image splashImage;

    IEnumerator Start()
    {
        splashImage.canvasRenderer.SetAlpha (0.0f);

        FadeIn ();
        yield return new WaitForSeconds(2.5f);
        //FadeOut ();
        //yield return new WaitForSeconds (2.5f);
        //SceneManager.LoadScene (loadLevel);
    }

    void FadeIn()
    {
        splashImage.CrossFadeAlpha (1.0f, 1.5f, false);
    }

    //void FadeOut()
    //{
    //    splashImage.CrossFadeAlpha (0.0f, 2.5f, false);   
    //}
}
1 Like
3

ty, but didnt work on gameobject

4

That code assumes you have a UI image + a canvas renderer component. What sort of game object is it? What material does it use?

5

yeah, like @MirzaBeig said, my script is for an image, you will have to be more detailed in what you are trying to accomplish

6

is a simple image like gameobject aand i need to change the “sprite render”

7

post some pics of your inspector or code or something

8

i need to change alpha like 1 seccond and back to alpha 1

9

yeah the script i provided should work, you will have to change it to a game object but it should still work,

10

rueda.CrossFadeAlpha(1.0f, 1.5f, false); is not working, because say croosfadealpha is not for gameobject

11

you are going to want to fade the material attached to that

12

i didnt understand u , srry i speak spanish, i made a pubic gameobject to assign it

13

srry i didnt understand u, i speak spanish and i have a public gameobject with that object

14

don’t know if this is correct

Si se trata de un objeto de juego, se va a querer atenuar el material adjunto a esa imagen

15

like this ?

16

Sí, ahora cambia el alfa del material “Centro” y deberías ir bien

17

and how i change centro xdd

18

Aquí, sólo escribió esto para que espero que pueda ayudar de lo contrario no sé qué más hacer para ayudar

using UnityEngine;
using System.Collections;

public class ChangeApha : MonoBehaviour
{
    public Keycode increaseAlpha;
    public Keycode decreaseAlpha;
    public float alphaLevel = .5f;

    // Use this for initialization
    void Start ()
    {
   
    }
   
    // Update is called once per frame
    void Update ()
    {
        if(Input.GetKeyDown (increaseAlpha))
        {
            alphaLevel += .05f;
        }
        if(Input.GetKeyDown(decreaseAlpha))
        {
            alphaLevel -= .05f;
        }

        GetComponent<SpriteRenderer> ().color = new Color (1,1,1,alphalevel);
    }
}
19

ty but i dont need with key i need with time :confused: and idk if i should use delta time

20

If you do += 1.0f * Time.DeltaTime, then it will be over a second. Change the first value to however long you want the transition.