// Update is called once per frame public void Update() { if (m_layerManager != null) { m_showAllLayersButton.interactable = m_layerManager != null && !m_layerManager.AreAllLayersVisible(); m_hideAllLayersButton.interactable = m_layerManager != null && !m_layerManager.AreAllLayersInvisible(); } else { m_showAllLayersButton.interactable = false; m_hideAllLayersButton.interactable = false; } }