我有4张PNG格式的动画图片,想让它们按照1-2-3-4-2-1的顺序,在半秒内播放,并且具备透明度渐变效果。
我的代码应该实现当父级对象生成时,第一帧立即出现,并在1/12秒内变成透明状态,同时第二帧变成不透明状态,以此类推,直到最后一帧完成其透明-不透明-透明的循环。
这可能不是最有效率的方法,但我已经创建了一个预制体,其中包含一个空对象和6个精灵帧,每个精灵都分配了单独的脚本。
以下是前三个脚本的示例:
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);
}
}
}
}
它们似乎在生成时就全部可见,而且它们不会消失或被摧毁。问题出在哪里呢?
谢谢。