void Update()
    {
        if ((IsGrounded() || !doubleJump) && Input.GetButton("Jump"))
        {
            animator.SetBool("isGrounded", false);
            playerRigidbody.AddForce(new Vector3(0, jumpForce, 0));

            if (!doubleJump && !IsGrounded())
            {
                doubleJump = true;
            }
        }

        if (gH.IsClambering())
        {
            isClambering = true;
        }
        else
        {
            isClambering = false;
        }
    }