2D游戏角色移动

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

    void FixedUpdate()
    {
        Movement();
        jump();
        SwitchAnimation();
    }
    void Update()
    {
        if (Input.GetButtonDown("Jump") && jumpCount > 0)
        {
            jumpPressed = true;
        }
    }
void Movement()
    {
        horizontalMove = Input.GetAxis("Horizontal");
        switchFace = Input.GetAxisRaw("Horizontal");
        rb.velocity = new Vector2(horizontalMove * speed, rb.velocity.y);
        if (horizontalMove != 0)
        {
            anim.SetFloat("speed", Mathf.Abs(horizontalMove));
        }
        if (switchFace != 0)
        {
            transform.localScale = new Vector3(-switchFace, 1, 1);
        }
    }

    void jump()
    {
        isOnGround = Physics2D.OverlapCircle(groundCheck.position, groundCheckDistance, ground);
        if (isOnGround)
        {
            jumpCount = 2;
            isJump = false;
        }
        if (isOnGround && jumpPressed)
        {
            isJump = true;
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            jumpCount--;
            jumpPressed = false;
        }
        else if (!isOnGround && jumpPressed && jumpCount > 0)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            jumpCount--;
            jumpPressed = false;
        }
    }