lab 10: bubbles under the sea

mySketch
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var bubbles_list = []
var burstcount = 0; 
var timer;
​
function setup() {
  createCanvas(400, 400);
​
  for (var i = 0; i < 100; i++){
  bubbles_list.push(new Bubbles());
}
  timer = setTimeout(endscreen, 5000);
 
}
​
function draw() {
  background(45, 64, 94);
  
  bubble_1 = new Bubbles();
  bubble_2 = new Bubbles();
  
  for (var i = 0; i < 50 ; i++){
  bubbles_list[i].display();
  bubbles_list[i].move();
  bubbles_list[i].burst();
  }
}
​
function endscreen(){
  if (burstcount > 4){
    print ("winner!")
    } else{
      print ("try again")
    }
}
​
//BLUEPRINT
​
class Bubbles {
  constructor(){
    this.x = random(400);
    this.y = random(400);
    this.size = random (30, 90);
    this.c = color(random(0,100), random(0,100), random(100,255));
    this.speed = random(-1.5, 1.5)
  }
  
  //functions
  
  display(){
    stroke(200, 200, 255);
    fill(this.c);
    circle(this.x, this.y, this.size);
  }
  
  move(){
    this.x += this.speed;
    if (this.x > 600){
      this.speed = - this.speed;
    }
    if (this.x < 0){
      this.speed = + this.speed;
  }{
    this.y += this.speed;
    if (this.y > 600){
      this.speed = - this.speed;
    }
    if (this.y < 0){
      this.speed = + this.speed; }
  }
  }
  //burst
  burst(){
    if(dist(mouseX, mouseY, this.x, this.y)< this.size/2){
       if(mouseIsPressed){
      this.x = - 1000000000;
         burstcount ++;
         print(burstcount);}
    }
  }
}