讓玩家雙跳

Question

我想讓玩家雙跳，但玩家可以無限跳躍，任何人都可以幫助我嗎？我使用統一5

using System.Collections.Generic; 
using UnityEngine; 

public class PlayerControl : MonoBehaviour { 

    public float moveSpeed; 
    public float jumpHeight; 
    private bool grounded; 
    private Rigidbody2D rb; 
    private int jumpCount = 0; 
    private int maxJumps = 2; 

    // Use this for initialization 
    void Start() { 

    } 
    // Update is called once per frame 
    void Update() { 
     if (Input.GetKeyDown (KeyCode.Space) && jumpCount < maxJumps) { 
      rb = GetComponent<Rigidbody2D>(); 
      rb.velocity = new Vector2 (rb.velocity.x, jumpHeight); 
      jumpCount = jumpCount + 1; 
     } 

     if (grounded == true) { 
      jumpCount = 0; 
     } 

     if (Input.GetKey (KeyCode.D)) { 
      rb.velocity = new Vector2 (moveSpeed,rb.velocity.y); 
     } 

     if (Input.GetKey (KeyCode.A)) { 
      rb.velocity = new Vector2 (-moveSpeed,rb.velocity.y); 
     } 
    } 
    void OnCollisionEnter2D (Collision2D collider){ 
     if (collider.gameObject.tag == "Ground") { 
      grounded = true; 
     } 
    } 

} 

Answer 1

你可以保持無限跳躍的原因是因爲你從來沒有設置grounded到false所以它總是重置jumpCount的值返回到0這裏

if (grounded == true) { 
    jumpCount = 0; 
} 

所以，當你跳轉設置grounded = false，因爲你不再在地面上。

if (Input.GetKeyDown (KeyCode.Space) && jumpCount < maxJumps) { 
    rb = GetComponent<Rigidbody2D>(); 
    rb.velocity = new Vector2 (rb.velocity.x, jumpHeight); 
    jumpCount = jumpCount + 1; 

    grounded = false; 
} 

而且隨着RigidBody和物理學工作時，最好使用FixedUpdate

FixedUpdate應與剛體打交道時可以用來代替更新。