Unity 2D横版移动跳跃

搭建场景

 绿色长方形为地表，红色圆形为玩家

地表挂载碰撞组件

 玩家挂载钢体组件和碰撞组件

 将Collision Detection设置为Continuous，Constraints勾选Freeze Rotation Z；

在Player上创建名为MoveandJump的C#脚本文章来源地址https://www.toymoban.com/news/detail-510873.html

代码实现

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

public class MoveandJump : MonoBehaviour
{
    private Rigidbody2D rb;
    private Collider2D coli;

    public float speed, jumpForce;//移动速度，跳跃高度
    public Transform groundCheck;//地面检测，判断Player是否落地
    public LayerMask ground;//与那一次层级进行检测

    public bool isGround;//是否在地面的状态，true则在地面，false这在空中

    bool jumpPreesed;//将Update中的玩家输入和在FixedUpdate的跳跃方法连接起来
    int jumpCount;//跳跃次数

    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        coli = GetComponent<Collider2D>();
    }

    void Update()
    {
        if (Input.GetButtonDown("Jump") && jumpCount > 0)
        {
            jumpPreesed = true;
        }
    }

    void FixedUpdate()
    {    
        //以groundCheck的位置为圆心，半径为0.1的圆进行检测，判断ground Layer是否在圆内
        isGround = Physics2D.OverlapCircle(groundCheck.position, 0.1f, ground);
        GroundMovement();
        Jump();
    }
    
    //移动
    void GroundMovement()
    {
        float horizontalMove = Input.GetAxisRaw("Horizontal");
        rb.velocity = new Vector2(horizontalMove * speed, rb.velocity.y);
    }

    //跳跃
    void Jump()
    {
        //落回地面恢复跳跃次数
        if (isGround)
        {
            jumpCount = 2;
        }
        //第一次跳跃
        if (jumpPreesed && isGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            jumpCount--;//跳跃次数-1
            jumpPreesed = false;//跳跃代码已执行完毕
        }
        //连跳
        else if (jumpPreesed && jumpCount >0 && !isGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            jumpCount--;
            jumpPreesed = false;
        }
    }
}

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