我正在学习Unity，但未检测到我的按键

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

public class Player : MonoBehaviour
{
    public Rigidbody myBody;

    private float time = 0.0f;
    private bool isMoving = false;
    private bool isJumpPressed = false;

    void Start(){
        myBody = GetComponent<Rigidbody>();
    }
    void Update()
    {
        isJumpPressed = Input.GetKeyDown(KeyCode.Space);
        Debug.Log(isJumpPressed);
    }

    void FixedUpdate(){
        if(isJumpPressed){
            myBody.velocity = new Vector3(0,10,0);
            isMoving = true;
            Debug.Log("jump");
        }
        if(isMoving){
            time = time + Time.fixedDeltaTime;
            if(time>10.0f)
            {
                //Debug.Log( Debug.Log(gameObject.transform.position.y + " : " + time));
                time = 0.0f;
            }
        }
    }

}

为什么JumpPressed总是false？我做错了什么？据我所知，这应该可以工作，但我显然遗漏了一些东西
更新：感谢每一个提出想法的人。当我停止尝试检测空格键时，我得到了isjumppressed返回true。

isJumpPressed = Input.GetKeyDown("a");

有人知道为什么这会成功吗

isJumpPressed = Input.GetKeyDown(KeyCode.Space);

或

isJumpPressed = Input.GetKeyDown("space");

更新2：显然这是Linux的一个错误。我听说当游戏只是在编辑器中构建时，它不会发生。我在www.example.com上找到了一个解决方法https://forum.unity.com/threads/space-not-working.946974/?_ga=2.25366461.1247665695.1598713842-86850982.1598713842#post-6188199
如果任何谷歌的绊倒在这个问题上参考以下代码，因为这是为我工作。

public class Player : MonoBehaviour
{

    public Rigidbody myBody;

    private float time = 0.0f;
    private bool isMoving = false;
    private bool isJumpPressed = false;

    void Start(){
        myBody = GetComponent<Rigidbody>();
    }
    void Update()
    {
        isJumpPressed = Input.GetKeyDown(SpacebarKey());
        if(isJumpPressed)
        {
            Debug.Log(isJumpPressed);
        }
    }

    void FixedUpdate(){
        if(isJumpPressed){
            myBody.velocity = new Vector3(0,10,0);
            isMoving = true;
            Debug.Log("jump");
        }
        if(isMoving){
            time = time + Time.fixedDeltaTime;
            if(time>10.0f)
            {
                //Debug.Log( Debug.Log(gameObject.transform.position.y + " : " + time));
                time = 0.0f;
            }
        }
    }

    public static KeyCode SpacebarKey() {
        if (Application.isEditor) return KeyCode.O;
        else return KeyCode.Space;
    }

}