Unity2D 没有正确检查条件

Question

我在这么短的时间内问了这么多 Unity 问题，我非常感谢所有回答的人。我不知道为什么我总是面临这样的问题，而我在网上看到的任何答案都无法帮助我。好的，这是我的问题：

if (Input.GetKey(KeyCode.Q) && (rightHit.collider != null || leftHit.collider != null) && groundHit.collider == null)

如果我按住任何墙上的 Q 按钮，Update 函数中的这行代码会检查每一帧。如果条件满足，那么

void Grapple()
    {
        if (wallGrapple) 
        {
            x = 0f;
            rb.gravityScale = 0;
            rb.velocity = new Vector2(speed * x, speed * y);
            if (Input.GetKeyDown(KeyCode.Space)) { jumpRequest = true; }

        }
    }

这个函数被调用，它允许玩家根据垂直轴输入（输入 y 变量）在墙上粘贴和滑动。现在的问题是，如果我只在墙上按 Q 一次，它就会留在墙上，即使它应该被按住以便调用 Graapple() [我使用 Input.GetKey 而不是 Input.GetKeyDown] 和即使在 if 行中，我也能够在墙壁上方滑动（就像有一些看不见的墙壁一样），正在检查检测墙壁的条件。

我已经玩了大约 30-45 分钟，但我无法破解它。我想到的另一个解决方法是使用协程，但我不知道如何使用，因为我没有找到任何关于它如何工作以及应该如何使用的基本解释。这是完整的代码，

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

public class Move : MonoBehaviour
{
    [SerializeField] private LayerMask groundMask;
    [SerializeField] private LayerMask Wall;

    [Header("Horizontal")]
    public float x;
    float dirX;
    public float speed;
    float initialSpeed;
    [SerializeField] [Range(0, 1)] float LerpConstant;
    public float dashForce = 100f;
    public bool canDash;
    public bool dashRequest;
    [Header("Vertical")]
    public float y;
    public bool canJump;
    public bool jumpRequest;
    public float initialJumpForce;
    public float jumpForce;
    public bool canWallJump;
    public float modifiedJumpForce;
    public float sideJumpForce;
    public bool wallGrapple;
    [Header("Other")]
    public Rigidbody2D rb;
    public float gScale = 10f;
    BoxCollider2D boxcollider;


    RaycastHit2D groundHit;
    RaycastHit2D leftHit;
    RaycastHit2D rightHit;


    // Start is called before the first frame update
    void Start()
    {
        rb = gameObject.GetComponent<Rigidbody2D>();
        boxcollider = gameObject.GetComponent<BoxCollider2D>();
        jumpForce = initialJumpForce;
        initialSpeed = speed;
        rb.gravityScale = gScale;

    }


    // Update is called once per frame
    void Update()
    {
        //Instant 1, 0, -1 inputs
        x = Input.GetAxisRaw("Horizontal");
        y = Input.GetAxisRaw("Vertical");
        if(x < 0) 
            { dirX = -1; } 
        else if(x > 0) 
            { dirX = 1; }
        if (Input.GetKeyDown(KeyCode.Space) && (canJump || canWallJump)) //for jumps
            { jumpRequest = true; } 
        if (Input.GetKey(KeyCode.Q) && (rightHit.collider != null || leftHit.collider != null) && groundHit.collider == null) //for wall grappling
            { wallGrapple = true; } 
        if (Input.GetKeyDown(KeyCode.LeftShift) && (canDash)) //for dashing
            { dashRequest = true; } 

        Detection();
        JumpDash();
        Grapple();
    }
    void FixedUpdate()
    {        
        Movement();
    }

    void Detection()
    {
        groundHit = Physics2D.BoxCast(boxcollider.bounds.center, boxcollider.bounds.size, 0f, Vector2.down, 0.1f, groundMask);
        if (groundHit.collider != null) //If player is on ground
        {
            canJump = true;
            canWallJump = false;
            canDash = false;
            jumpForce = initialJumpForce;
            sideJumpForce = 0;
            LerpConstant = 0.25f;
        }
        else if (groundHit.collider == null)//not on ground 
        {
            LerpConstant = 0.12f;
            canJump = false;
        }

        //Wall detection

        //Left wall
        leftHit = Physics2D.BoxCast(boxcollider.bounds.center, boxcollider.bounds.size, 0f, Vector2.left, 0.1f, Wall);
        if (leftHit.collider != null && groundHit.collider == null) //if player on left wall and not on ground
        {
            canWallJump = true;
            jumpForce = modifiedJumpForce;
            sideJumpForce = jumpForce;

        }
        //Right wall
        rightHit = Physics2D.BoxCast(boxcollider.bounds.center, boxcollider.bounds.size, 0f, Vector2.right, 0.1f, Wall);
        if (rightHit.collider != null && groundHit.collider == null) //if player on right wall and not on ground
        {
            canWallJump = true;
            jumpForce = modifiedJumpForce;
            sideJumpForce = -jumpForce; // negative of jump force to jump in left direction


        }

        if (rightHit.collider == null && leftHit.collider == null) //if both walls are not detected
        {
            canWallJump = false;
        }
    }

    void Movement()
    {
        Vector2 move = new Vector2(x * speed, rb.velocity.y);
        rb.velocity = Vector2.Lerp(rb.velocity, move, LerpConstant);
    }



    void JumpDash()
    {

        //Jump
        if (jumpRequest)
        {
            wallGrapple = false;
            rb.gravityScale = gScale;
            rb.AddForce(new Vector2(sideJumpForce * 2.1f, jumpForce), ForceMode2D.Impulse);
            speed = initialSpeed;
            jumpRequest = false; //setting jumpRequest to false after jumping to prevent unlimited jumps
            canDash = true;
        }

        /*if (dashRequest)
        {
            rb.velocity = Vector2.zero;
            rb.AddForce((dashForce, 0f), ForceMode2D.Impulse);
        }*/ //remember to put this code in later

    }

    void Grapple()
    {
        if (wallGrapple) 
        {
            x = 0f;
            rb.gravityScale = 0;
            rb.velocity = new Vector2(speed * x, speed * y);
            if (Input.GetKeyDown(KeyCode.Space)) { jumpRequest = true; }

        }
    }

}

附：我最初想使用 Space 本身而不是 Q 来进行摇杆和滑动，但是会弹出更多错误，例如不一致的墙壁跳跃，所以这就是我使用 Q 的原因。

https://streamable.com/3v6qrq

Answer 1

你好像没有设置

wallGrapple = 假

代码中除跳转请求之外的任何位置。因此，由于它永远不会设置为 false，因此您的玩家将不断地进行擒抱。 或许你可以先在Update函数中设置为false，然后做key检测。

Answer 2

我给你看一个协程示例代码 sn-p。 您可以从注释行中理解它并将其应用到您自己的代码中。

void Start()
{
    StartCoroutine("coroutineFunc");  // calling for example 
}

和协程函数是这样的：

IEnumerator coroutineFunc()
    {
         // before waiting... if u wanna try something
            yield return new WaitForSeconds(1); // waiting..

            // after waiting something what do you want



    }