Unity 2D. Why is my Sprite invisiblity after running my Script?

Scripting
,
1

Before I post my code, I want to explain what my goal is.
Currently learning, so I hope some good tips and ideas will help me make this work.

An Object should have its colour changed for a certain period of time.
Suppose I have 10 objects and I want to control which kind of colour each object should have,
and also for how long time before it will change to another Color.

I tried it myself, but failed.
As a result, I tried ChatGPT.
I will post the code here.
For whatever reason, I am unable to see my GameObject.

using UnityEngine;

public class ColorChangeController : MonoBehaviour
{
    [System.Serializable]
    public struct ColorDuration
    {
        public Color color;
        public float duration;
    }

    public ColorDuration[] colorDurations;

    private SpriteRenderer spriteRenderer;
    private int currentIndex = 0;

    private void Start()
    {
        spriteRenderer = GetComponent<SpriteRenderer>();
        // Start color changing process
        ChangeColor(currentIndex);
    }

    private void ChangeColor(int index)
    {
        ColorDuration currentColorDuration = colorDurations[index];

        // Change color and duration
        spriteRenderer.color = currentColorDuration.color;
        float duration = currentColorDuration.duration;

        // Call ChangeColor method again after the specified duration
        Invoke("NextColor", duration);
    }

    private void NextColor()
    {
        // Move to the next color index
        currentIndex++;

        // Reset index if it exceeds array length
        if (currentIndex >= colorDurations.Length)
        {
            currentIndex = 0;
        }

        // Change color again
        ChangeColor(currentIndex);
    }
}
2

I haven’t looked at the code yet, maybe that’s the reason. But I remembered one moment with a similar problem associated with fields of the color type and the invisibility of objects.
Perhaps you have the following reason why objects disappear. When there is a field with type color, by default it is black and completely transparent. That is, its alpha has a value of zero. In the inspector, you simply changed the color, but the alpha could still remain at zero. Check the alpha of each color type field.

3

Don‘t use Invoke but a coroutine if you want to delay execution.
At the very least use nameof(NextColor) instead of a hardcoded string so it doesn‘t break when there is a mismatch eg after renaming the method.

Can‘t see a reason why it wouldn‘t work besides that though, except the alpha thing.

4

Thanks for your answer.
Lol, why didn’t I think about it, alpha!

Did just added any color and chose whatever I liked, didn’t check for Alpha.
Was sure that Alpha is set to 255 as the default.

Wonder why ChatGPT didn’t ask for Alpha.
Anyway, thanks for the Answer :slight_smile: