Unity 2D物体移动

Posted 2021-01-27 yueqingli

一，设置

 

 二，脚本

　

1，PlayerController 

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

public class PlayerController : MonoBehaviour {

    private Rigidbody2D m_rg;

    public float MoveSpeed;
    public float JumpSpeed;

    //在角色下添加一个空物体
    //设置一个跳跃监测点
    public Transform CheckPoint;
    //设置一个跳跃监测半径
    public float CheckRadius;
    //设置一个跳跃监测层---角色与地面的检测
    public LayerMask WhatIsGround;

    //角色默认是否着地--true
    public bool isGround;

    private Animator Anim;

    //存储复活点的位置信息
    public Vector2 RespawnPosition;


    public LevelManager theLevel;

    void Start () {

        m_rg = gameObject.GetComponent<Rigidbody2D>();
        Anim = gameObject.GetComponent<Animator>();

        //游戏刚开始时，玩家的重生点，就是当前的初始位置点
        RespawnPosition = transform.position;

        theLevel = FindObjectOfType<LevelManager>();

    }
    
    // Update is called once per frame
    void Update () {
        //
        isGround = Physics2D.OverlapCircle(CheckPoint.position, CheckRadius, WhatIsGround);


        //m_rg.gameObject.transform.rotation= Quaternion.identity;

        //------------------Input.GetAxisRaw没有小数值，只有整数，不会产生缓动------------------
        //角色水平移动
        //按住D键，判断如果大于0，则向右开始移动
        if (Input.GetAxisRaw("Horizontal") > 0)
        {
            m_rg.velocity = new Vector2(MoveSpeed, m_rg.velocity.y);

            //设置自身缩放的值
            transform.localScale = new Vector2(1f,1f);
        }
        //角色水平移动
        //按住A键，判断如果小于0，则向左开始移动
        else if (Input.GetAxisRaw("Horizontal") < 0)
        {
            m_rg.velocity = new Vector2(-MoveSpeed, m_rg.velocity.y);

            //如果new Vector2(-1f, 1f)  x值为负数，则图片进行反转显示
            transform.localScale = new Vector2(-1f, 1f);
        }
        else
        //角色水平移动
        //松开按键，判断如果等于0，则停止移动
        {
            m_rg.velocity = new Vector2(0, m_rg.velocity.y);
        }

        //角色按下空格键实现跳跃
        //禁止二连跳
        //要先判断角色是否在地面上，在地面上可以跳，不在地面上则不能跳
        if (Input.GetButtonDown("Jump")&& isGround)
        {

            m_rg.velocity = new Vector2(m_rg.velocity.x,JumpSpeed);
        }


        Anim.SetFloat("Speed", m_rg.velocity.x);
        Anim.SetBool("Grouned", isGround);
    }


    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag=="KillPlane")
        {
            //gameObject.SetActive(false);

            //使当前玩家的位置点为，保存的复活点位置
            //transform.position = RespawnPosition;

            theLevel.Respawn();

        }


        //角色与当前的复活点进行碰撞检测
        //把当前角色的位置信息，设置为重生的复活点
        if (collision.tag == "CheckPoint")
        {
            RespawnPosition = collision.transform.position;
        }
    }


    /// <summary>
    /// 实现角色跟随移动平台一起运动
    /// 把角色的父物体设置为移动平台
    /// </summary>
    /// <param name="collision"></param>
    private void OnCollisionEnter2D(Collision2D collision)
    {
        Debug.Log("碰撞到的那个吊毛叫什么名字："+ collision.gameObject.name);
        if (collision.gameObject.tag == "MovePlatForm")
        {
            transform.parent = collision.transform;
            Debug.Log("碰撞到的那个吊毛的父物体什么名字：" + transform.parent);
        }
    }
    private void OnCollisionExit2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "MovePlatForm")
        {
            transform.parent = null;
        }
    }
}

 

 

 2，MovePlatFromController 

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


/// <summary>
/// 平台移动脚本
/// </summary>
public class MovePlatFromController : MonoBehaviour {

    //要移动的物体
    public GameObject PlatForm;
    //要移动物体开始的点
    public Transform StartPoint;
    //要移动物体结束的点
    public Transform EndPoint;
    //要移动物体的移动速度
    public float MoveSpeed;
    //要移动到的目标点
    public Vector2 target;

    void Start () {
        
        target = EndPoint.position;
    }
    
    // Update is called once per frame
    void Update () {

        //把物体移动到指定的位置点上
        PlatForm.transform.position = Vector2.MoveTowards(PlatForm.transform.position, target, MoveSpeed*Time.deltaTime);

        //实现物体来回移动
        if (PlatForm.transform.position == EndPoint.position)
        {
            target = StartPoint.position;
        }
        if (PlatForm.transform.position == StartPoint.position)
        {
            target = EndPoint.position;
        }
    }
}