这里提供的角色移动方式是：

• 每按下一个按键，移动一格
• 角色移动一格与下一格之间有休息时间

using System.Collections;
using System.Collections.Generic;
using UnityEngine;


public class move : MonoBehaviour {


public float smoothing=6.0f;
public float restTime = 0.3f;
public float restTimer = 0.0f;


private Vector2 targetPos = new Vector2 (1,1);
private Rigidbody2D rb;
private BoxCollider2D cd;


// Use this for initialization
void Start () {
rb = GetComponent<Rigidbody2D> ();
cd = GetComponent<BoxCollider2D> ();
}

// Update is called once per frame
void Update () {



}


void FixedUpdate () {


rb.MovePosition (Vector2.Lerp(transform.position,targetPos,smoothing*Time.deltaTime));


restTimer += Time.deltaTime;
if (restTimer < restTime)
return;


float h = Input.GetAxisRaw ("H");
float v = Input.GetAxisRaw ("V");
if(h!=0){
v = 0;
}


if(h!=0||v!=0){
cd.enabled = false;
RaycastHit2D hit= Physics2D.Linecast (targetPos,targetPos+new Vector2(h,v));
cd.enabled = true;


if (hit.transform == null) {


targetPos += new Vector2 (h, v);


} else {
switch(hit.collider.tag){
case "outsidewall":
break;
case "insidewall":
hit.collider.SendMessage ("TakeDamage");
break;
case "food":
GameManager.getGM.addHP (10);
targetPos += new Vector2 (h, v);
Destroy (hit.transform.gameObject);
break;
}
}

restTimer = 0;
}

}

}