如何让玩家摔倒时死亡？

Question

我正在Unity上开发一款基础游戏，以提高自己的水平。这是一款基本的无尽跑酷平台游戏。

如果当玩家在地面上时，你点击右键，它就会跳起来；如果不在地面上，它就会落得更快。

但是我想不出如何让玩家在落下时死于抓不住平台。请你检查一下我的代码好吗？我正试图找到一个 "if "命令来实现它。

using JetBrains.Annotations;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class PlayerControls : MonoBehaviour
{
    public Rigidbody2D rb;
    public Transform groundCheck;
    public float groundCheckRadius;
    public LayerMask whatIsGround;
    private bool onGround;
    float CurrentFallTime;
    public float MaxFallTime = 7;
    bool PlayerIsFalling;


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

    void Update()
    {
        rb.velocity = new Vector2(5, rb.velocity.y);
        onGround = Physics2D.OverlapCircle(groundCheck.position, groundCheckRadius, whatIsGround);

        CurrentFallTime += Time.deltaTime;

        if (Input.GetMouseButtonDown(0) && onGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, 12);
        }

        if (Input.GetMouseButtonDown(0) && !onGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, -10);
        }

        // I want it to die and go to game over screen when it exceeds the CurrentFallTime
        if ()
        {
            if (CurrentFallTime >= MaxFallTime)
            {
                SceneManager.LoadScene("GameOver");
            }
        }      
    }
}

EDIT: 解决了! 我模拟添加了 "if(onGround) "并重置了CurrentFallTime。这是新的代码。

using JetBrains.Annotations;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class PlayerControls : MonoBehaviour
{
    public Rigidbody2D rb;
    public Transform groundCheck;
    public float groundCheckRadius;
    public LayerMask whatIsGround;
    private bool onGround;
    float CurrentFallTime;
    public float MaxFallTime = 7;
    bool PlayerIsFalling;


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

    void Update()
    {
        rb.velocity = new Vector2(5, rb.velocity.y);
        onGround = Physics2D.OverlapCircle(groundCheck.position, groundCheckRadius, whatIsGround);

        CurrentFallTime += Time.deltaTime;

        if (onGround)
        {
            CurrentFallTime = 0f;
        }

        if (Input.GetMouseButtonDown(0) && onGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, 12);
        }

        if (Input.GetMouseButtonDown(0) && !onGround)
        {
            rb.velocity = new Vector2(rb.velocity.x, -10);
        }



        if (CurrentFallTime >= MaxFallTime)
        {
            SceneManager.LoadScene("GameOver");
        }

    }
}

Answer 1

这是我现在才想到的，所以不知道效果如何，但你可以创建一个1面的平面碰撞器，并将其定位为跟随玩家的x坐标和y坐标，但要比地面的高度略低，例如1unit。然后检查玩家何时与飞机相撞，如果相撞了，那么你就知道玩家已经坠落了。

所以，创建一个空的GameObject并添加碰撞器，不需要任何网格属性，并将碰撞器触发器设置为true。然后在玩家控制中添加类似于in update的东西。

colliderGo.transform.location = new Vector3(transform.x, groundHeight - 1, transform.z)

同时在玩家控制器的功能中

function onTrigger(Collider col) {
    if (col.tag == "fallDetector") {
        Debug.Log("What a cruel world")
        playHasFallen = true;
    }
}

这样的东西应该可以用。