c# - 如何在 Unity 中编写精灵之间的渐变过渡？

问题描述

我有 4 张 PNG 图像的动画。我想让帧在 1/2 秒内以 1-2-3-4-2-1 的顺序播放，并带有透明度过渡。

我写的应该是在生成包含不同精灵的父对象时立即出现第一帧，然后让它在 1/12 秒内变为透明，而第二帧变为不透明，依此类推，直到最后一帧结束它的透明-不透明-透明循环。

这可能不是最有效的方法，但我制作了一个空对象的预制件，在其下放置了 6 个精灵帧，每个精灵都有一个单独的脚本。

我以发布前三个脚本为例：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Frame1 : MonoBehaviour
{
    private SpriteRenderer thisSprite;
    private Color alpha;
    private float timer;
    // Start is called before the first frame update
    void Start()
    {
        alpha.a = 255;
        thisSprite.GetComponent<SpriteRenderer>().color = alpha;
    }

    // Update is called once per frame
    void Update()
    {
        timer = timer + Time.deltaTime;
        alpha.a -= timer * 3060;
        thisSprite.GetComponent<SpriteRenderer>().color = alpha;
        if (timer >= 1/12)
        {
            Destroy(gameObject);
        }

    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Frame2 : MonoBehaviour
{
    private SpriteRenderer thisSprite;
    private Color alpha;
    private float timer;
    private int direction;
    // Start is called before the first frame update
    void Start()
    {
        alpha.a = 0;
        thisSprite.GetComponent<SpriteRenderer>().color = alpha;
    }

    // Update is called once per frame
    void Update()
    {
        if (direction == 0)
        {
            timer = timer + Time.deltaTime;
            alpha.a += timer * 3060;
            thisSprite.GetComponent<SpriteRenderer>().color = alpha;
            if (timer >= 1/12)
            {
                direction = 1;
            }
        }
        if (direction == 1)
        {
            timer = timer - Time.deltaTime;
            alpha.a += timer * 3060;
            thisSprite.GetComponent<SpriteRenderer>().color = alpha;
            if (timer >= 1/6)
            {
                Destroy(gameObject);
            }
        }

    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Frame3 : MonoBehaviour
{
    private SpriteRenderer thisSprite;
    private Color alpha;
    private float timer;
    private int direction;
    // Start is called before the first frame update
    void Start()
    {
        alpha.a = 0;
        thisSprite.GetComponent<SpriteRenderer>().color = alpha;
        timer -= 1 / 12;
    }

    // Update is called once per frame
    void Update()
    {
        if (direction == 0)
        {
            timer = timer + Time.deltaTime;
            alpha.a += timer * 3060;
            thisSprite.GetComponent<SpriteRenderer>().color = alpha;
            if (timer >= 1 / 12)
            {
                direction = 1;
            }
        }
        if (direction == 1)
        {
            timer = timer - Time.deltaTime;
            alpha.a += timer * 3060;
            thisSprite.GetComponent<SpriteRenderer>().color = alpha;
            if (timer >= 1 / 6)
            {
                Destroy(gameObject);
            }
        }

    }
}

它们在生成的那一刻似乎都是可见的，它们不会消失，甚至根本不会被破坏。问题是什么？

谢谢。

标签： c#unity3dsprite

c# - 如何在 Unity 中编写精灵之间的渐变过渡？

问题描述

解决方案

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