unity 收货币动画

小小小---最近项目需求做了一个小功能

using UnityEngine;using System.Collections;using UnityEngine.UI;public class CoinAnimation : MonoBehaviour{    //货币预制体    public GameObject[] mCoinPrefab;    public float mRate = 0.03f;    //移动速度    public float mMoveSpeed = 10;    public AnimationCurve mMoveSpeedCurve;    public float mRotateSpeed = 3;    //随机位置    public float startRangeOffect = 1f;    //点击播放动画    public Button btnClick;    private static CoinAnimation Instance;    //货币属性    private class Coin    {        //移动时间        public float mMoveProgress;        //货币对象        public Transform mTransform;        public Vector3 mRotateSpeed;        //起始位置        public Vector3 startIn;        //目标        public Vector3 targetIn;    }    private void Start()    {        btnClick.onClick.AddListener(BtnPlay);        Instance = this;    }    private void OnDestroy()    {        Instance = null;    }    public void BtnPlay()    {        Play(0, btnClick.transform.position, new Vector3(4, 4), 10);    }    private IEnumerator OnAnimation(float flyTime, int type, Vector3 startIn, Vector3 targetIn, int count)    {        Camera sceneCamera = Camera.main;        Camera uiCamera = null;        Vector3 start, target;        if (null != uiCamera)        {            start = startIn;            target = targetIn;            // 将UI起点坐标转换为场景起点坐标并保存            startIn = sceneCamera.ViewportToWorldPoint(uiCamera.WorldToViewportPoint(startIn));        }        else        {            start = startIn;            target = targetIn;        }        System.Collections.Generic.List<Coin> coins = new System.Collections.Generic.List<Coin>();        float generateTime = 0;        float generateCount = 0;        float moveSpeed = flyTime;        while (true)        {            if (generateCount < count && generateTime <= 0)            {                //计算实例化数量（创建数量依次增多 count / 2 时依次减少）                int instantiateCount = (int)(generateCount >= count / 2 ? count / 2 - (generateCount - count / 2) : generateCount);                //实例化对象                for (int i = 0; i <= instantiateCount; ++i)                {                    Coin coin = new Coin();                    coin.mRotateSpeed = new Vector3(                        Mathf.Lerp(0, 360, Random.Range(0, 1f)),                        Mathf.Lerp(0, 360, Random.Range(0, 1f)),                        Mathf.Lerp(0, 360, Random.Range(0, 1f))) * mRotateSpeed;                    //实例化的对象可从列表中根据自己需求来                    GameObject go = Instantiate(mCoinPrefab[type], start, Random.rotationUniform) as GameObject;                    go.SetActive(true);                    go.transform.SetParent(transform);                    go.transform.localScale = Vector3.one;                    //将实例化的货币初始化                    coin.mTransform = go.transform;                    coin.startIn = new Vector3(Random.Range(startIn.x - startRangeOffect, startIn.x + startRangeOffect), Random.Range(startIn.y - startRangeOffect, startIn.y + startRangeOffect), Random.Range(startIn.z - startRangeOffect, startIn.z + startRangeOffect));                    coin.targetIn = targetIn;                    coins.Add(coin);                }                generateTime = mRate;                //创建次数                generateCount++;            }            else            {//实例化间隔时间                generateTime -= Time.deltaTime;            }            if (null != uiCamera)            {                // 将场景起点坐标转换为UI起点坐标，因为场景可以拖动，不然会造成效果分离的问题，所以必须转换一次                start = uiCamera.ViewportToWorldPoint(sceneCamera.WorldToViewportPoint(startIn));            }            for (int i = coins.Count - 1; i >= 0; --i)            {                Coin coin = coins[i];                coin.mTransform.position = Vector3.Lerp(coin.startIn, coin.targetIn, coins[i].mMoveProgress);                coin.mTransform.Rotate(coin.mRotateSpeed.x * Time.deltaTime, coin.mRotateSpeed.y * Time.deltaTime, coin.mRotateSpeed.z * Time.deltaTime);                //现在的移动进度                coin.mMoveProgress = coin.mMoveProgress + Mathf.Max(mMoveSpeedCurve.Evaluate(coin.mMoveProgress), 0.1f) * moveSpeed * Time.deltaTime;                if (coin.mMoveProgress >= 1)                {//移动结束之后删除预制体                    coins.RemoveAt(i);                    Destroy(coin.mTransform.gameObject);                }            }            //播放结束退出            if (generateCount >= count && coins.Count == 0)                break;            yield return null;        }    }    public float BeginAnimation(int type, Vector3 source, Vector3 target, int count)    {        // 飞行时长        float flyTime = (target - source).magnitude / mMoveSpeed;        StartCoroutine(OnAnimation(flyTime, type, source, target, Mathf.Clamp(count, 1, 20)));        return flyTime;    }    /// <summary>    /// 播放特效    /// </summary>    /// <param name="type">类型</param>    /// <param name="source">UI相机中的起点坐标</param>    /// <param name="target">UI相机中的终点坐标</param>    /// <param name="count">粒子数量</param>    /// <returns>播放时长</returns>    public static float Play(int type, Vector3 source, Vector3 target, int count)    {        if (null != Instance)        {            return Instance.BeginAnimation(type, source, target, count);        }        return 0;    }}