Unity3D的Legacy动画系统中应用Root Motion

来源：互联网发布：windows批处理教程编辑：程序博客网时间：2024/05/24 23:16

http://blog.csdn.net/neil3d/article/details/41724705

在动画时间内计算每帧动画的位移，即父节点的localPosition

把此位移给transform.position

最后处理一下循环动画，即用AnimationState.normalizedTime来控制

using UnityEngine;using System.Collections;public class ApplyRootMotion : MonoBehaviour {public Transform m_flagObject;// 用来测试位置的一个对象//-- Root Motion 控制变量Transform m_rootBone;    Vector3 m_lastRootPos;    Vector3 m_rootMotion;    int m_lastAnimTime;void Start () {//-- 从SkinnedMeshRenderer中读取Root BoneSkinnedMeshRenderer skinMesh = this.gameObject.GetComponentInChildren<SkinnedMeshRenderer>();        m_rootBone = skinMesh.rootBone;        print(m_rootBone.name);        //-- 变量初始化        m_rootMotion = Vector3.zero;        m_lastRootPos = m_rootBone.localPosition;        m_lastAnimTime = 0;}void Update () {//-- Apply Root MotionVector3 nextPos = this.transform.position + m_rootMotion;        this.transform.position = nextPos;        //-- 测试代码：更新测试物体的位置        Vector3 flagPos = m_flagObject.position;        flagPos.x = nextPos.x;        flagPos.z = nextPos.z;        m_flagObject.position = flagPos;        //-- 测试代码：更新摄像机        Camera.main.transform.LookAt(this.transform);}void LateUpdate()    {AnimationState animState = this.animation["walking"];if ((int)animState.normalizedTime > m_lastAnimTime){        //-- 动画循环处理        m_lastRootPos = m_rootBone.localPosition;        m_rootMotion = Vector3.zero;        }        else        {        //-- 计算当前帧的Root Motion        Vector3 rootPos = m_rootBone.localPosition;        m_rootMotion = rootPos - m_lastRootPos;        m_lastRootPos = rootPos;        rootPos.x = 0;        rootPos.z = 0;        m_rootMotion.y = 0;        m_rootBone.localPosition = rootPos;        }        m_lastAnimTime = (int)animState.normalizedTime;        //m_lastAnimTime = 0;    }}

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