var X = -1000, Y = 100;
var Xv, Yv;
var Xc, Yc;
var Xt = 350, Yt = -200;
var Xe = 350, Ye = 750;

var font;

var enter;
var select;
var selector = 0;
var title;
var overlay;
var win, failure;
var ovni;
var virus;
var texture_virus;
var coin;

var select_pressed = 0;

var coin_sound;
var start_sound;
var death_sound;
var select_sound;
var denied_sound;
var intro = 0;
var intro_music;
var game_music;
var win_music;

var highscore = 999;

var timer=window.setInterval("Timer()",1000);
var seconds = 0;

var gamemode = 0;        // 0 = Menu , 1 = En jeu, 2 = Mort, 3 = Gagné
var niveau = 1;

////////////// Initialisation //////////////

function preload() {
  font = loadFont('textures/game_over.ttf')
  title = loadImage('textures/title.png');
  select = loadImage('textures/select.png');
  enter = loadImage('textures/enter.png');
  overlay = loadImage('textures/overlay.png');
  win = loadImage('textures/win.png');
  failure = loadImage('textures/failure.png');
  ovni = loadImage('textures/ovni.png');
  texture_virus = loadImage('textures/virus.png');
  coin = loadImage('textures/coin.png');
  soundFormats('mp3', 'ogg');
  coin_sound = loadSound('sounds/coin.ogg');
  start_sound = loadSound('sounds/start.ogg');
  death_sound = loadSound('sounds/death.ogg');
  select_sound = loadSound('sounds/select.ogg');
  denied_sound = loadSound('sounds/denied.ogg');
  intro_music = loadSound('sounds/intro.ogg');
  game_music = loadSound('sounds/game.ogg');
  win_music = loadSound('sounds/win.ogg')
    }

function setup() {
  createCanvas(windowWidth, windowHeight);
  imageMode(CENTER);
  textAlign(CENTER);
  noCursor();
}

function windowResized() {
  resizeCanvas(windowWidth, windowHeight);
}

////////////// Draw //////////////

function draw() {
  if (gamemode == 0){
    mainMenu();
}

  else if (gamemode == 1){
  Playing();
}

if (keyIsDown(13) && gamemode==2) {
  niveau = 1;
  gamemode = 1;
  seconds = 0;
  start_sound.play();
  game_music.loop();
  Level(1);
}

if (keyIsDown(27) && gamemode==3) {
  win_music.stop();
  X = -1000;
  Y = 100;
  seconds = 0;
  niveau = 1;
  gamemode = 0;
  start_sound.play();
}
}

////////////// Classe Virus //////////////

class Virus {
  constructor(virus, x, y) {
      this.virus = virus;
      this.x = x;
      this.y = y;
  }
}


////////////// Menu //////////////

function mainMenu() {
    background(0);
    image(ovni, X, Y, 60, 60);
    image(title, Xt, Yt, 600, 600);
    image(enter, Xe, Ye, 400, 400);


    X+=10;
    if(X == 1400 && Y == 100){
      X = -1000;
      Y = 600;
    }
    if(X == 1400 && Y == 600){
      X = -1000;
      Y = 100;
    }


    if (Yt < 200){
      Yt+=5;
    }

    if (Ye > 500){
      Ye-=5;
    }

    if (Yt == 200 && selector == 0){
      image(select, 235, 475, 150, 150);
    }
    if (Yt == 200 && selector == 1){
      image(select, 463, 475, 150, 150);
    }

    if (keyIsDown(37)) {
      select_pressed = 1;
      selector = 0;
     }
    if (keyIsDown(39)) {
      select_pressed = 1;
      selector = 1;
    }

    //if (select_pressed == 1){
    //  select_sound.play();
    //  select_pressed = 0;
    //}

    if (intro == 0){
      intro_music.loop();
      intro = 1;
    }

    if (keyIsDown(13) && selector == 0) {
      gamemode = 1;
      intro = 0;
      intro_music.stop();
      start_sound.play();
      game_music.loop();

    Level(1);
}
if (keyIsDown(13) && selector == 1) {
  denied_sound.play();
}
}

////////////// Lose //////////////

 function Lose() {
  gamemode = 2;
  background(0);
  image(failure, width/2, height/2, 670, 670);

 }
////////////// Level //////////////

function Level(niveau) {
  if(niveau == 1){
    X = 0;
    Y = 400;
    let virus = new Virus(virus, 255, 255);
    Xc = 135;
    Yc = 82;
  }
  else if(niveau == 2){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 3){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 4){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 5){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 6){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 7){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 8){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 9){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 10){
    X = 0;
    Y = 400;
    Xv = 126;
    Yv = 98;
    Xc = 550;
    Yc = 344;
  }
  else if(niveau == 11){
    game_music.stop();
    win_music.loop();
    gamemode = 3;
    X = 0;
    Y = 400;
    Xt = 350;
    Yt = -200;
    Xe = 350;
    Ye = 750;
    background(0);
    if(seconds < highscore){
      highscore = seconds;
    }
    image(win, width/2, height/2, 670, 670);
    fill(255, 255, 255);
    textSize(80);
    textFont(font);
    text(highscore, (width/2), 520);
    text(seconds, (width/2), 610);
  }
}

////////////// Timer //////////////

function Timer() {
  if(gamemode == 1){
  seconds+=1;
}
}

////////////// Playing //////////////

function Playing() {

  background(0);
  noFill();

image(overlay, width/2, height/2, 670, 670);

 fill(200);

 image(ovni, X, Y, 50, 50);
 image(virus, Xv, Yv, 50, 50);
 image(coin, Xc, Yc, 15, 15);

 textSize(60);
 textFont(font);
 text("Level ", 325, 35);
 text(niveau, 385, 35);

 textSize(60);
 textFont(font);
 text("Best Time : ", 150, 645);
 text(highscore, 235, 645);
 text("Time : ", 500, 645);
 text(seconds, 550, 645);

  if (keyIsDown(40)) {
    Y+=5;
  }
  if (keyIsDown(38)) {
    Y-=12;
  }
  if (keyIsDown(39)) {
    X+=5;
  }
  if (keyIsDown(37)) {
    X-=5;
  }

  if (X > width-60)
   X = width-60;
  if (X < 60)
   X = 60;
  if (Y > height-100)
   Y=height-100;
  if (Y < 78)
   Y=78;

  if (Y < height)
   Y+=3;

   if (dist(X, Y, Xv, Yv)<=40){
     death_sound.play();
     game_music.stop();
     Lose();
  }

   if (dist(X, Y, Xc, Yc)<=20){
    niveau+=1;
    Level(niveau);
    coin_sound.play();
  }
}