[Unity] Realization of first-person jumping motion

Goals:

Implement the first-person jump function in Unity, based on CharacterControllercomponents

private float jumpSpeed; //跳跃速度
private bool isGround;//是否在地面
private bool verticalVelocity; //当前垂直速度

    void Update() {
    
    
        Jump(); //跳跃事件
    }

    void Jump() {
    
    
        bool isKeyDownSpace = Input.GetKeyDown(KeyCode.Space);
        if (verticalVelocity != 0 || isKeyDownSpace) {
    
    //按下空格键 或者 具备速度 检测地面
            isGround = Physics.Raycast(transform.position, Vector3.down,0.1f);
        }
        
        if (isGround && isKeyDownSpace) {
    
    //跳跃速度初始值
            MyLogger.Print("玩家跳跃");
            verticalVelocity = jumpSpeed;
        }

        if (!isGround) {
    
    //空中持续受到重力
            verticalVelocity -= gravity * Time.deltaTime;
        }
                
        if (isGround && verticalVelocity < 0) {
    
    //是否在地面(下落时) Y 轴速度为 0
            verticalVelocity = 0;
        }

        transform.position += Vector3.up * verticalVelocity * Time.deltaTime;
    }