/*  This file is part of the "Simple Waypoint System" project by Rebound Games.
 *  You are only allowed to use these resources if you've bought them from the Unity Asset Store.
 * 	You shall not license, sublicense, sell, resell, transfer, assign, distribute or
 * 	otherwise make available to any third party the Service or the Content. */

using UnityEngine;
using System.Collections;
#if UNITY_5_0 || UNITY_5_1 || UNITY_5_2
#else
    using UnityEngine.SceneManagement;
#endif

/// <summary>
/// Showcase GUI for navigating between scenes.
/// <summary>
public class ShowcaseGUI : MonoBehaviour
{
    private static ShowcaseGUI instance;
    private int levels = 10;


    void Start()
    {
        if (instance)
            Destroy(gameObject);

        instance = this;
        DontDestroyOnLoad(gameObject);

        #if UNITY_5_0 || UNITY_5_1 || UNITY_5_2 || UNITY_5_3
            OnLevelWasLoaded(0);
        #else
            ActivateSurroundings();
			SceneManager.sceneLoaded += OnLevelLoaded;
        #endif
    }


    #if UNITY_5_0 || UNITY_5_1 || UNITY_5_2 || UNITY_5_3
    void OnLevelWasLoaded(int level)
    {
        ActivateSurroundings();
    }
    #else
    void OnLevelLoaded(Scene scene, LoadSceneMode mode)
    {
        ActivateSurroundings();
    }
    #endif


    void ActivateSurroundings()
    {
        GameObject floor = GameObject.Find("Floor_Tile");
        if (floor)
        {
            foreach (Transform trans in floor.transform)
            {
                trans.gameObject.SetActive(true);
            }
        }
    }


    void OnGUI()
    {
        int width = Screen.width;
        int buttonW = 30;
        int buttonH = 40;

        #if UNITY_5_0 || UNITY_5_1 || UNITY_5_2
		    Rect leftRect = new Rect(width - buttonW * 2 - 70, 10, buttonW, buttonH);
			if (Application.loadedLevel > 0 && GUI.Button(leftRect, "<"))
				Application.LoadLevel(Application.loadedLevel - 1);
			else if (GUI.Button(new Rect(leftRect), "<"))
				Application.LoadLevel(levels - 1);

			GUI.Box(new Rect(width - buttonW - 70, 10, 60, buttonH),
					"Scene:\n" + (Application.loadedLevel + 1) + " / " + levels);

			Rect rightRect = new Rect(width - buttonW - 10, 10, buttonW, buttonH);
			if (Application.loadedLevel < levels - 1 && GUI.Button(new Rect(rightRect), ">"))
				Application.LoadLevel(Application.loadedLevel + 1);
			else if (GUI.Button(new Rect(rightRect), ">"))
				Application.LoadLevel(0);
        #else
			Rect leftRect = new Rect(width - buttonW * 2 - 70, 10, buttonW, buttonH);
			if (SceneManager.GetActiveScene().buildIndex > 0 && GUI.Button(leftRect, "<"))
				SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex - 1);
			else if (GUI.Button(new Rect(leftRect), "<"))
				SceneManager.LoadScene(levels - 1);

			GUI.Box(new Rect(width - buttonW - 70, 10, 60, buttonH),
					"Scene:\n" + (SceneManager.GetActiveScene().buildIndex + 1) + " / " + levels);

			Rect rightRect = new Rect(width - buttonW - 10, 10, buttonW, buttonH);
			if (SceneManager.GetActiveScene().buildIndex < levels - 1 && GUI.Button(new Rect(rightRect), ">"))
				SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
			else if (GUI.Button(new Rect(rightRect), ">"))
				SceneManager.LoadScene(0);
        #endif

		GUI.Box(new Rect(width - 65 * 2, 50, 120, 55), "Example scenes\nmust be added\nto Build Settings.");
    }
}