Menu

using UnityEngine;
using System.Collections;
public class MENU : MonoBehaviour {
   private AudioListener[] AudioListners;
   public Texture QualidadeGrafica,Resolucoes,ModoJanelaOuTelaCheia,Volume,TexturaCreditos,TexturaFundosMenu,TexturaGraficos;
   private bool EstaNoMenuPrincipal,EstaNosGraficos,EstaNosCreditos;
   public GUIStyle EstiloDosBotoesPrincipais,EstiloDosBotoesGraficos;
   private string ResolucaoLargura = "1024",ResolucaoAltura = "768";
   private float VOLUME;
   private int qualidadeGrafica;
   public Font Fonte;
   public int tamanhoDaLetra = 4;
   void Awake (){
      DontDestroyOnLoad (transform.gameObject);
   }
   void Start (){
      EstaNoMenuPrincipal = true;
      Cursor.visible = true;
      Time.timeScale = 1;
      // PREFERENCIAS SALVAS
      if (PlayerPrefs.HasKey ("VOLUME")) {
         VOLUME = PlayerPrefs.GetFloat ("VOLUME");
      } else {
         PlayerPrefs.SetFloat ("VOLUME", VOLUME);
      }
      //
      if (PlayerPrefs.HasKey ("qualidadeGrafica")) {
         qualidadeGrafica = PlayerPrefs.GetInt ("qualidadeGrafica");
         QualitySettings.SetQualityLevel(qualidadeGrafica);
      } else {
         PlayerPrefs.SetInt ("qualidadeGrafica", qualidadeGrafica);
      }
   }
   void Update (){
      //Preencher Arrays
      if (Application.loadedLevelName != "MENU") {
         AudioListners = GameObject.FindObjectsOfType(typeof(AudioListener)) as AudioListener[];
         AudioListener.volume = VOLUME;
         Destroy (gameObject);
      }
   }
   void OnGUI (){
      GUI.skin.font = Fonte;
      EstiloDosBotoesPrincipais.fontSize = Screen.height / 100 * tamanhoDaLetra;
      EstiloDosBotoesGraficos.fontSize = Screen.height / 100 * tamanhoDaLetra;
      //=============================== SE ESTA NA PARTE PRINCIPAL DO MENU ===================//
      if (EstaNoMenuPrincipal == true) {
         GUI.skin.button = EstiloDosBotoesPrincipais;
         GUI.DrawTexture(new Rect(Screen.width/2-Screen.width/2,Screen.height/2-Screen.height/2,Screen.width,Screen.height),TexturaFundosMenu);
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/5.5f,Screen.width/8,Screen.height/14),"Jogar")){
            Application.LoadLevel ("AI");// NOME DA CENA DO SEU JOGO
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/16,Screen.width/8,Screen.height/14),"Opçoes")){
            EstaNoMenuPrincipal = false;
            EstaNosGraficos = true;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/16,Screen.height/2+Screen.height/16,Screen.width/8,Screen.height/14),"Creditos")){
            EstaNoMenuPrincipal = false;
            EstaNosCreditos = true;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/16,Screen.height/2+Screen.height/5.5f,Screen.width/8,Screen.height/14),"Sair")){
            Application.Quit ();
         }
      }
      //=============================== SE ESTA NA PARTE DOS GRAFICOS DO MENU ===================//
      if (EstaNosGraficos == true) {
         GUI.skin.button = EstiloDosBotoesGraficos;
         GUI.DrawTexture(new Rect(Screen.width/2-Screen.width/2,Screen.height/2-Screen.height/2,Screen.width,Screen.height),TexturaGraficos);
         GUI.DrawTexture(new Rect(Screen.width/2-Screen.width/3,Screen.height/2-Screen.height/2.5f,Screen.width/8,Screen.height/14),QualidadeGrafica);
         GUI.DrawTexture(new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/2.5f,Screen.width/8,Screen.height/14),Resolucoes);
         GUI.DrawTexture(new Rect(Screen.width/2+Screen.width/5,Screen.height/2-Screen.height/2.5f,Screen.width/8,Screen.height/14),ModoJanelaOuTelaCheia);
         GUI.DrawTexture(new Rect(Screen.width/2+Screen.width/5,Screen.height/2-Screen.height/10,Screen.width/8,Screen.height/14),Volume);
         //
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/2.2f,Screen.height/2+Screen.height/2.5f,Screen.width/8,Screen.height/14),"VOLTAR")){
            EstaNoMenuPrincipal = true;
            EstaNosGraficos = false;
         }
         //QUALIDADES
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2-Screen.height/4,Screen.width/8,Screen.height/14),"PESSIMO")){
            QualitySettings.SetQualityLevel(0);
            qualidadeGrafica = 0;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2-Screen.height/6,Screen.width/8,Screen.height/14),"RUIM")){
            QualitySettings.SetQualityLevel(1);
            qualidadeGrafica = 1;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2-Screen.height/12,Screen.width/8,Screen.height/14),"SIMPLES")){
            QualitySettings.SetQualityLevel(2);
            qualidadeGrafica = 2;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2,Screen.width/8,Screen.height/14),"BOM")){
            QualitySettings.SetQualityLevel(3);
            qualidadeGrafica = 3;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2+Screen.height/12,Screen.width/8,Screen.height/14),"OTIMO")){
            QualitySettings.SetQualityLevel(4);
            qualidadeGrafica = 4;
         }
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/3,Screen.height/2+Screen.height/6,Screen.width/8,Screen.height/14),"FANTASTICO")){
            QualitySettings.SetQualityLevel(5);
            qualidadeGrafica = 5;
         }
         //RESOLUCOES
         ResolucaoLargura = GUI.TextField(new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/4,Screen.width/8,Screen.height/14),ResolucaoLargura);
         ResolucaoAltura = GUI.TextField(new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/6,Screen.width/8,Screen.height/14),ResolucaoAltura);
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/16,Screen.height/2-Screen.height/12,Screen.width/8,Screen.height/14),"Aplicar")){
            Screen.SetResolution(int.Parse (ResolucaoLargura),int.Parse (ResolucaoAltura),true);
         }
         //TELACHEIA
         if(GUI.Button(new Rect(Screen.width/2+Screen.width/5,Screen.height/2-Screen.height/4,Screen.width/8,Screen.height/14),"Trocar")){
            Screen.fullScreen = !Screen.fullScreen;
         }
         //VOLUME
         VOLUME = GUI.HorizontalSlider(new Rect(Screen.width/2+Screen.width/5,Screen.height/2,Screen.width/8,Screen.height/14),VOLUME,0,1);
         //SALVAR PREFERENCIAS
         if(GUI.Button(new Rect(Screen.width/2+Screen.width/5,Screen.height/2+Screen.height/3,Screen.width/8,Screen.height/14),"SALVAR PREF.")){
            PlayerPrefs.SetFloat("VOLUME",VOLUME);
            PlayerPrefs.SetInt("qualidadeGrafica",qualidadeGrafica);
         }
      }
      //=============================== SE ESTA NA PARTE DOS CREDITOS DO MENU ===================//
      if (EstaNosCreditos == true) {
         GUI.skin.button = EstiloDosBotoesGraficos;
         GUI.DrawTexture(new Rect(Screen.width/2-Screen.width/2,Screen.height/2-Screen.height/2,Screen.width,Screen.height),TexturaCreditos);
         if(GUI.Button (new Rect(Screen.width/2-Screen.width/2.2f,Screen.height/2+Screen.height/2.5f,Screen.width/8,Screen.height/14),"VOLTAR")){
            EstaNoMenuPrincipal = true;
            EstaNosCreditos = false;
         }
      }
   }
}