let bullets = [];

let numBullets = 0;

let arrRocks;

let rocks = []

let rate = 0;

let lasersound;

let difficulty = 0;

// let xx;

let rocksctr = 0;

let gamestatus = "start";

let currentScore = 0;

let prevScore = 0;

​

function preload() {

  img = loadImage('Hs4QN2.gif');

  startScreen = loadImage('startscreen.gif');

  ship = loadImage('Untitled-1.png');

  bullet = loadImage('bullet.png');

  soundFormats('mp3', 'ogg');

  lasersound = loadSound('lasersound.mp3');

  bomb = loadSound('explo.mp3');

  rock1 = loadImage('rock1.png');

  rock2 = loadImage('rock2.png');

  rock3 = loadImage('rock3.png');

  gameoverpng = loadImage('gameover.png');

  mainFont = loadFont('metal lord.otf');

}

​

​

function setup() {

  createCanvas(400, 550);

  mainship = new spaceship();

  arrRocks = [rock1,rock2,rock3] ;

  textFont(mainFont);

  // xx = new boulders();

}

​

function startPage(){

  textSize(50);

  fill(250);

  text("TOP G",130,250);

  textSize(20);

  text("press enter to start",100,310);

}

​

function score(){

  textSize(32);

  fill(250);

  text("Score: "+currentScore,20,50);

}

​

function increaseD(){

  if(currentScore === 10 + prevScore){

    difficulty += 0.5;

    prevScore = currentScore;

    // console.log(difficulty);

  }

  return random(1,5)+difficulty;

​

}

​

function keyPressed() {

  if(keyCode === ENTER){

     gamestatus = "running";

  }

  if (keyCode === UP_ARROW){

    makebullet(mainship.x,mainship.y);

  }

  if(keyCode === LEFT_ARROW){

    rate = -5;

  }

  if(keyCode === RIGHT_ARROW){

    rate = 5;

  }

  if(keyCode === BACKSPACE){

    rocks.splice(0,rocks.length);

    rocksctr = 0;

  }

}

​

function removeRocks(){

  rocks.splice(0,rocks.length);

  rocksctr = 0;

}

​

​

function keyReleased() 

{

  if (keyCode === RIGHT_ARROW || keyCode === LEFT_ARROW) 

  {

    rate = 0;

  }

  if(keyCode === ENTER){

     gamestatus = "running";

  }

  if(keyCode === BACKSPACE){

    rocks.splice(0,rocks.length);

    rocksctr = 0;

  }

}

​

​

function displaybullets(){

    for(let i = 0; i < bullets.length; i++){

      bullets[i].display();

      if(bullets[i].y < 0){

        bullets.splice(i,1);

        numBullets--;

      }

    }

  // console.log(numBullets);

}

​

function generaterocks(){

  let rand = int(random(0, 100));

  let rand2 = int(random(0, 100));

  if(rand % 7 == 0){

    if(rand2 % 3 == 0){

      if(rand2 % 2 == 0 && rand % 2 == 0){

          rocks[rocksctr] = new boulders();

          rocks[rocksctr].display();

          // console.log(rocksctr);

          rocksctr++;

        }

     }

  }

}

​

function displayrocks(){

  for(let i = 0; i < rocks.length; i++){

    rocks[i].display();

    // console.log(">",rocks.length);

    let temp = false;

    for(let j = 0; j < bullets.length; j++){

      if(bullets[j].didcollide(rocks[i])){

        temp = true;

        bullets.splice(i,1);

        numBullets--;

      }

    }

    if(mainship.didcollide(rocks[i])){

      rocks.splice(i,1);

      rocksctr--;

      gamestatus = "end";

      bomb.play();

    }else if(rocks[i].y > height || temp){

      rocks.splice(i,1);

      rocksctr--;

    }

  }

}

​

​

function makebullet(x,y){

  // console.log(x);

  bullets[numBullets] = new bulletClass(x,y);

  bullets[numBullets].display();

  numBullets++;

}

​

​

​

function draw() {

  background(0);

  if(gamestatus == "running"){

    image(img, 0, 0);

    mainship.display();

    displaybullets();

    generaterocks();

    displayrocks();

    score();

  }else if(gamestatus == "end"){

    image(gameoverpng, 0, 0);

    removeRocks();

    currentScore = 0;

    difficulty = 0;

    prevScore = 0;

  }else if(gamestatus == "start"){

    background(startScreen);

    startPage();

  }

  // xx.display();

}

​

class boulders{

  constructor(){

    this.x = random(0,width-50);

    this.y = -20;

    this.rocktype =  int(random(0, 3));

    this.rateFall = increaseD();

  }

  display(){

    image(arrRocks[this.rocktype],this.x,this.y);

    this.move();

  }

  move(){

    this.y += this.rateFall;

  }

  width(){

    if(this.rocktype == 0){

      return 71;

    }else if(this.rocktype == 1){

      return 48;

    }else if(this.rocktype == 2){

      return 91;

    }

  }

  increaseD(){

  }

}

​

​

​

class bulletClass{

  constructor(x,y){

    this.x = x;

    this.y = y;

    lasersound.play();

    this.collision = false;

  }

  display(){

    image(bullet,this.x,this.y);

    this.move();

  }

  move(){

    this.y -= 7;

  }

  didcollide(other){

    if ( (this.x <= (other.x + other.width())) && (this.x >= other.x)) {

      if ((this.y <= (other.y + other.width())) && (this.y  >= other.y)){

        // print("Collision");

        currentScore++;

        return true;

      }      

    }

  }

}

​

​

class spaceship{

  constructor(){

    this.x = 200;

    this.y = 450;

    this.display();

  }

  display(){

    imageMode(CENTER);

    image(ship,this.x,this.y);

​

    this.move();

    this.checkboundries();

​

​

    imageMode(CORNER);

  }

  move(){

    this.x += rate;

  }

  checkboundries(){

    if(this.x > width){

      this.x = 0;

    }else if(this.x < 0){

      this.x = width;

    }

  }

  didcollide(other){

    if ( (this.x <= (other.x + other.width())) && (this.x >= other.x)) {

      if ((this.y <= (other.y + other.width())) && (this.y  >= other.y)){

        // print("Collision");

        return true;

      }      

    }

  }

​

}

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​