void endEffect()
    {
        playerWeapon playerScript = player.GetComponent <playerWeapon>();

        playerScript.powerUp(false, type);
        Destroy(gameObject);
    }
    void startEffect()
    {
        playerWeapon playerScript = player.GetComponent <playerWeapon>();

        playerScript.powerUp(true, type);

        GetComponent <SpriteRenderer>().enabled   = false;
        GetComponent <CircleCollider2D>().enabled = false;
    }