Circuits/Assets/Resources/Scripts/Main/UI/GUIController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GUIController : MonoBehaviour {

	public static GUIController Instance {
		get;
		set;
	}

	public GameObject mainMenu;
	public GameObject settingsMenu;
	public GameObject audioMenu;
	public GameObject lobby;

	public MenuState state;

	void Awake() {
		Instance = this;
	}

	void Start() {
		state = MenuState.Main;
	}

	public void OnStartButtonClicked() {
		mainMenu.SetActive(false);

		Island.Instance.RotateToZero();

		state = MenuState.Hidden;
	}
	public void OnSettingsButtonClicked() {
		mainMenu.SetActive(false);
		settingsMenu.SetActive(true);

		Island.Instance.MoveLeft();

		state = MenuState.Settings;
	}
	public void OnAudioButtonClicked() {
		settingsMenu.SetActive(false);
		audioMenu.SetActive(true);

		state = MenuState.Audio;
	}
	public void OnSettingsBackButtonClicked() {
		settingsMenu.SetActive(false);
		mainMenu.SetActive(true);

		Island.Instance.MoveRight();

		state = MenuState.Main;
	}
	public void OnAudioBackButtonClicked() {
		audioMenu.SetActive(false);
		settingsMenu.SetActive(true);

		state = MenuState.Settings;
	}
	public void OnMusicSliderVolumeChanged(float value) {
		SettingsManager.Instance.SetMusicsVolume(value);
	}
	public void OnSFXSliderVolumeChanged(float value) {
		SettingsManager.Instance.SetSFXVolume(value);
	}

	public void ShowLobby() {
		if (lobby != null) {
			lobby.SetActive(true);
			state = MenuState.Lobby;
		}
	}
	public void ShowMenu() {
		mainMenu.SetActive(true);
		state = MenuState.Main;
	}

	public void OpenMenu() {
		if (state == MenuState.Lobby) {
			mainMenu.SetActive(false);
			Island.Instance.FreeRotate();
			CameraController.Instance.MoveOnMenu();

			state = MenuState.Hidden;
		}
	}

	public void OnQuitButtonClicked() {
#if UNITY_EDITOR
		UnityEditor.EditorApplication.isPlaying = false;
#else
        Application.Quit();
#endif
	}
}

public enum MenuState {
	Main,
	Settings,
	Lobby,
	Audio,
	Hidden
}