这次的代码示例是配合动画系统使用的

4.3新的动画系统允许动画带有位置偏移，只需要在Animator组件中勾选Apply Root Motion我们就可以使用它了。

 

using UnityEngine;using System.Collections;public class DonePlayerMovement : MonoBehaviour{    public AudioClip shoutingClip;        // Audio clip of the player shouting.    public float turnSmoothing = 15f;    // A smoothing value for turning the player.    public float speedDampTime = 0.1f;    // The damping for the speed parameter            private Animator anim;                // Reference to the animator component.    private DoneHashIDs hash;            // Reference to the HashIDs.            void Awake ()    {        // Setting up the references.        anim = GetComponent
     
      ();        hash = GameObject.FindGameObjectWithTag(DoneTags.gameController).GetComponent
      
       ();                // Set the weight of the shouting layer to 1.        anim.SetLayerWeight(1, 1f);    }            void FixedUpdate ()    {        // Cache the inputs.        float h = Input.GetAxis("Horizontal");        float v = Input.GetAxis("Vertical");        bool sneak = Input.GetButton("Sneak");                MovementManagement(h, v, sneak);    }            void Update ()    {        // Cache the attention attracting input.        bool shout = Input.GetButtonDown("Attract");                // Set the animator shouting parameter.        anim.SetBool(hash.shoutingBool, shout);                AudioManagement(shout);    }            void MovementManagement (float horizontal, float vertical, bool sneaking)    {        // Set the sneaking parameter to the sneak input.        anim.SetBool(hash.sneakingBool, sneaking);                // If there is some axis input...        if(horizontal != 0f || vertical != 0f)        {            // ... set the players rotation and set the speed parameter to 5.5f.            Rotating(horizontal, vertical);            anim.SetFloat(hash.speedFloat, 5.5f, speedDampTime, Time.deltaTime);        }        else            // Otherwise set the speed parameter to 0.            anim.SetFloat(hash.speedFloat, 0);    }            void Rotating (float horizontal, float vertical)    {        // Create a new vector of the horizontal and vertical inputs.        Vector3 targetDirection = new Vector3(horizontal, 0f, vertical);                // Create a rotation based on this new vector assuming that up is the global y axis.        Quaternion targetRotation = Quaternion.LookRotation(targetDirection, Vector3.up);                // Create a rotation that is an increment closer to the target rotation from the player's rotation.        Quaternion newRotation = Quaternion.Lerp(rigidbody.rotation, targetRotation, turnSmoothing * Time.deltaTime);                // Change the players rotation to this new rotation.        rigidbody.MoveRotation(newRotation);    }            void AudioManagement (bool shout)    {        // If the player is currently in the run state...        if(anim.GetCurrentAnimatorStateInfo(0).nameHash == hash.locomotionState)        {            // ... and if the footsteps are not playing...            if(!audio.isPlaying)                // ... play them.                audio.Play();        }        else            // Otherwise stop the footsteps.            audio.Stop();                // If the shout input has been pressed...        if(shout)            // ... play the shouting clip where we are.            AudioSource.PlayClipAtPoint(shoutingClip, transform.position);    }}