3d-bianpo/Assets/Scripts/Anim/TweenAlpha.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;
using UnityEngine.UI;

public class TweenAlpha : MonoBehaviour
{
    [Range(0f, 1f)]
    public float from = 0f;
    [Range(0f, 1f)]
    public float to = 1f;

    public TweenStyle playStyle = TweenStyle.Once;

    public AnimationCurve curve = new AnimationCurve(new Keyframe(0f, 0f, 0f, 1f), new Keyframe(1f, 1f, 1f, 0f));

    public float timer = 1f;

    private Tween tweener = null;

    private SpriteRenderer spriteRender;
    private Image image;
    private Text text;

    void Awake()
    {
        spriteRender = GetComponent<SpriteRenderer>();
        image = GetComponent<Image>();
        text = GetComponent<Text>();
    }

    void Start()
    {
        PlayForward();
    }

    public void PlayForward()
    {
        ResetToBegining();
        switch (playStyle)
        {
            case TweenStyle.Once:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(to, timer).SetEase(curve);
                }
                if (image != null)
                {
                    tweener = image.DOFade(to, timer).SetEase(curve);
                }
                if (text != null)
                {
                    tweener = text.DOFade(to, timer).SetEase(curve);
                }
                break;
            case TweenStyle.Loop:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(to, timer).SetEase(curve).SetLoops(-1);
                }
                if (image != null)
                {
                    tweener = image.DOFade(to, timer).SetEase(curve).SetLoops(-1);
                }
                if (text != null)
                {
                    tweener = text.DOFade(to, timer).SetEase(curve).SetLoops(-1);
                }
                break;
            case TweenStyle.PingPong:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(to, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                if (image != null)
                {
                    tweener = image.DOFade(to, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                if (text != null)
                {
                    tweener = text.DOFade(to, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                break;
        }
    }

    public void PlayReverse()
    {
        ResetToEnding();
        switch (playStyle)
        {
            case TweenStyle.Once:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(from, timer).SetEase(curve);
                }
                if (image != null)
                {
                    tweener = image.DOFade(from, timer).SetEase(curve);
                }
                if (text != null)
                {
                    tweener = text.DOFade(from, timer).SetEase(curve);
                }
                break;
            case TweenStyle.Loop:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(from, timer).SetEase(curve).SetLoops(-1);
                }
                if (image != null)
                {
                    tweener = image.DOFade(from, timer).SetEase(curve).SetLoops(-1);
                }
                if (text != null)
                {
                    tweener = text.DOFade(from, timer).SetEase(curve).SetLoops(-1);
                }
                break;
            case TweenStyle.PingPong:
                if (spriteRender != null)
                {
                    tweener = spriteRender.DOFade(from, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                if (image != null)
                {
                    tweener = image.DOFade(from, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                if (text != null)
                {
                    tweener = text.DOFade(from, timer).SetEase(curve).SetLoops(-1, LoopType.Yoyo);
                }
                break;
        }
    }

    public void Stop()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
    }

    public void Pause()
    {
        if (tweener != null)
        {
            tweener.Pause();
        }
    }

    public void Play()
    {
        if (tweener != null)
        {
            tweener.Play();
        }
    }

    public void ResetToBegining()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
        if (spriteRender != null)
        {
            spriteRender.DOFade(from, 0f);
        }
        if (image != null)
        {
            image.DOFade(from, 0f);
        }
        if (text != null)
        {
            text.DOFade(from, 0f);
        }
    }

    public void ResetToEnding()
    {
        if (tweener != null)
        {
            tweener.Kill();
        }
        if (spriteRender != null)
        {
            spriteRender.DOFade(to, 0f);
        }
        if (image != null)
        {
            image.DOFade(to, 0f);
        }
        if (text != null)
        {
            text.DOFade(to, 0f);
        }
    }


}