PlayerAttack.Update C# (CSharp) Method

    void Update()
    {
        if (attackTimer > 0)
        {
            attackTimer -= Time.deltaTime;
        }

        if (attackTimer < 0)
        {
            attackTimer = 0;
        }

        // Check for attack key
        if (Input.GetKeyUp(KeyCode.F))
        {
            if (attackTimer == 0)
            {
                Attack();
                attackTimer = coolDown;
            }
        }
    }