Question

即使不在地面，这段代码也会继续跳跃，你如何阻止它（使用Unity）。

守则：

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour 
{

    //Movement
    public float speed;
    public float jump;
    float moveVelocity;

    //Grounded Vars
    bool grounded = true;

    void Update () 
    {
        //Jumping
        if (Input.GetKeyDown (KeyCode.Space) || Input.GetKeyDown (KeyCode.UpArrow) || Input.GetKeyDown (KeyCode.Z) || Input.GetKeyDown (KeyCode.W)) 
        {
            if(grounded)
            {
                GetComponent<Rigidbody2D> ().velocity = new Vector2 (GetComponent<Rigidbody2D> ().velocity.x, jump);
            }
        }

        moveVelocity = 0;

        //Left Right Movement
        if (Input.GetKey (KeyCode.LeftArrow) || Input.GetKey (KeyCode.A)) 
        {
            moveVelocity = -speed;
        }
        if (Input.GetKey (KeyCode.RightArrow) || Input.GetKey (KeyCode.D)) 
        {
            moveVelocity = speed;
        }

        GetComponent<Rigidbody2D> ().velocity = new Vector2 (moveVelocity, GetComponent<Rigidbody2D> ().velocity.y);

    }
    //Check if Grounded
    void OnTriggerEnter2D()
    {
        grounded = true;
    }
    void OnTriggerExit2D()
    {
        grounded = false;
    }
}

Answer 1

有几种方法可以实现这一点但是遵循当前的实现：为什么不在跳转时将isGrounded标志设置为false并让你的触发器在你降落时重置标志？

您可以检查的一些事项：你的所有碰撞器都是2D并设置为触发器吗？您是否检查过实际发生的图层冲突？

public class PlayerController : MonoBehaviour 
{

    //Movement
    public float speed;
    public float jump;
    float moveVelocity;

    //Grounded Vars
    bool isGrounded = true;

    void Update () 
    {
        //Jumping
        if (Input.GetKeyDown (KeyCode.Space) || Input.GetKeyDown (KeyCode.UpArrow) || Input.GetKeyDown (KeyCode.Z) || Input.GetKeyDown (KeyCode.W)) 
        {
            if(isGrounded)
            {
                GetComponent<Rigidbody2D> ().velocity = new Vector2 (GetComponent<Rigidbody2D> ().velocity.x, jump);
                isGrounded = false;
            }
        }

        moveVelocity = 0;

        //Left Right Movement
        if (Input.GetKey (KeyCode.LeftArrow) || Input.GetKey (KeyCode.A)) 
        {
            moveVelocity = -speed;
        }
        if (Input.GetKey (KeyCode.RightArrow) || Input.GetKey (KeyCode.D)) 
        {
            moveVelocity = speed;
        }

        GetComponent<Rigidbody2D> ().velocity = new Vector2 (moveVelocity, GetComponent<Rigidbody2D> ().velocity.y);

    }
    //Check if Grounded
    void OnTriggerEnter2D()
    {
        isGrounded = true;
    }
}

Answer 2

我非常确定您需要为（）中的GetKeyDown加上“”，但是我不确定用户名中的内容是不是很新。

Answer 3

我是编程新手，因此我将其视为挑战。我才注意到这是五年前的事，但无论如何我都不会发送我的解决方案。我仍然不知道你的脚本是如何工作的。哈哈

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

public class Movement: MonoBehaviour
{

    //Movement
    public float speed;
    public float jump;
    float moveVelocity;
    public Rigidbody2D rb;

    void Update()
    {
        //Grounded?
        if (rb.position.y < 5.52)
        {
            //jumping
            if (Input.GetKeyDown(KeyCode.Space) || Input.GetKeyDown(KeyCode.UpArrow) || Input.GetKeyDown(KeyCode.Z) || Input.GetKeyDown(KeyCode.W))
            {
        
            GetComponent<Rigidbody2D>().velocity = new Vector2(GetComponent<Rigidbody2D>().velocity.x, jump);
            }
      }
  
       moveVelocity = 0;

       //Left Right Movement
       if (Input.GetKey(KeyCode.LeftArrow) || Input.GetKey(KeyCode.A))
       {
           moveVelocity = -speed;
       }
       if (Input.GetKey(KeyCode.RightArrow) || Input.GetKey(KeyCode.D))
       {
           moveVelocity = speed;
       }

       GetComponent<Rigidbody2D>().velocity = new Vector2(moveVelocity, GetComponent<Rigidbody2D>().velocity.y);

    }
}

C＃2D平台移动代码

3 个答案: