void Update() {
    wasGrounded = (ground != null);
    ground = groundCheck();
    walls = wallCheck();

    Vector2 targetMovement = new Vector2(rb.velocity.x, rb.velocity.y - gravityScale);

    if(ground != null && ground.GetComponent<Rigidbody2D>() != null) {
      targetMovement = new Vector2(rb.velocity.x + (ground.GetComponent<Rigidbody2D>().velocity.x * 0.425f), rb.velocity.y - gravityScale);
    }

    int horizontalInput = (int)Mathf.Round(Input.GetAxisRaw("Horizontal"));
    int verticalInput = (int)Mathf.Round(Input.GetAxisRaw("Vertical"));
    bool jumping = (verticalInput > 0f || Input.GetButton("Jump"));

    targetMovement.x = Mathf.Lerp(targetMovement.x, horizontalInput * movementSpeed, (!Mathf.Approximately(horizontalInput,0f))?moveFriction:groundFriction);
    if(jumping && ground != null && Time.time - lastJump >= jumpFreezeTime) {
      lastJump = Time.time;
      targetMovement.y = jumpPower;
    }

    currentMovement = targetMovement;
  }