JunShi101ShiNei/Assets/XDKUnityCloudExamples/Common/Scripts/MovieOfFrames.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

public sealed class MovieOfFrames : MonoBehaviour
{
    /// <summary>
    /// 类型
    /// </summary>
    public enum Style
    {
        /// <summary>
        /// 循环
        /// </summary>
        Loop = 0,
        /// <summary>
        /// 乒乓
        /// </summary>
        PingPong = 1,
        /// <summary>
        /// 单次
        /// </summary>
        Once = 2
    }
    [SerializeField]
    bool m_PlayOnAwake = false;
    [SerializeField]
    int m_CurrentFrame = 0;
    [SerializeField]
    int m_FrameRate = 25;
    [SerializeField]
    Style m_Style = Style.Once;
    [SerializeField]
    float m_Space = 0;
    [SerializeField]
    List<Texture2D> m_Frames = new List<Texture2D>();
    [SerializeField]
    RawImage mRawImage = null;
    bool m_IsPlaying = false;

    /// <summary>
    /// 播放类型
    /// </summary>
    public Style style {
        get {
            return m_Style;
        }
        set {
            m_Style = value;
        }
    }
    /// <summary>
    /// 播放中？
    /// </summary>
    public bool isPlaying {
        get {
            return m_IsPlaying;
        }
    }
    /// <summary>
    /// 循环
    /// </summary>
    public bool loop {
        get {
            return style == Style.Loop;
        }
        set {
            if (value)
                style = Style.Loop;
            else
                style = Style.Once;
        }
    }
    public float space {
        get {
            return m_Space;
        }
        set {
            m_Space = value;
        }
    }

    /// <summary>
    /// 当前显示画面
    /// </summary>
    public Texture texture {
        get {
            return m_Frames[m_CurrentFrame];
        }
    }

    /// <summary>
    /// 总帧数
    /// </summary>
    public int maxFrames {
        get {
            return m_Frames.Count - 1;
        }
    }
    /// <summary>
    /// 当前帧数
    /// </summary>
    public int currentFrame {
        get {
            return m_CurrentFrame;
        }
        set {
            value = Mathf.Clamp(value, 0, maxFrames);
            m_CurrentFrame = value;
            Sample();
        }
    }
    /// <summary>
    /// 帧速率
    /// </summary>
    public int frameRate {
        get {
            return m_FrameRate;
        }
    }

    /// <summary>
    /// 起始是否播放
    /// </summary>
    public bool playOnAwake {
        get {
            return m_PlayOnAwake;
        }
        set {
            m_PlayOnAwake = value;
        }
    }
    /// <summary>
    /// 序列集合
    /// </summary>
    public Texture2D[] frames {
        get {
            return m_Frames.ToArray();
        }
        set {
            Sample();
            Stop();
        }
    }

    /// <summary>
    /// 播放
    /// </summary>
    public void Play() {
        if (isPlaying)
            return;
        m_IsPlaying = true;
        m_CurrentFrame = 0;
        Sample();
        StartCoroutine("PlayMovie");
    }

    /// <summary>
    /// 停止
    /// </summary>
    public void Stop() {
        StopCoroutine("PlayMovie");
        if (m_IsPlaying) {
            m_IsPlaying = false;
        }
    }
    /// <summary>
    /// 采样（更新图片）
    /// </summary>
    public void Sample() {
        mRawImage.texture = texture;
    }

    void Awake() {
        m_Frames = m_Frames.Where(f => Regex.IsMatch(f.name, @"^\d+$")).OrderBy(f => int.Parse(f.name)).ToList();
    }

    void OnEnable() {
        if (m_PlayOnAwake)
            Play();
    }

    void OnDisable() {
        Stop();
    }

    IEnumerator PlayMovie() {
        bool flag = true;
        while (isPlaying) {
            float waitTime = 1f / m_FrameRate;
            switch (m_Style) {
                case Style.Loop:
                    if (m_CurrentFrame == maxFrames) {
                        m_CurrentFrame = 0;
                        yield return new WaitForSeconds(space);
                    }
                    m_CurrentFrame++;
                    break;
                case Style.PingPong:
                    if (m_CurrentFrame == maxFrames) {
                        flag = false;
                        yield return new WaitForSeconds(space);
                    }
                    if (m_CurrentFrame == 0) {
                        flag = true;
                        yield return new WaitForSeconds(space);
                    }
                    if (flag) {
                        m_CurrentFrame++;
                    }
                    else {
                        m_CurrentFrame--;
                    }
                    break;
                case Style.Once:
                    if (m_CurrentFrame == maxFrames) {
                        m_IsPlaying = false;
                        StopCoroutine("PlayMovie");
                    }
                    m_CurrentFrame++;
                    break;
            }
            m_CurrentFrame = Mathf.Clamp(m_CurrentFrame, 0, maxFrames);
            Sample();
            yield return new WaitForSecondsRealtime(waitTime);
        }
    }
}