void setup() {
  size (800, 600);
  background = loadImage("Background.jpg");
  Ballimage=loadImage("ball.png");
}
PImage background;
PImage Ballimage;
float time;
float interval;
int last=0;



class Bubble {
  float ballsize;
  PImage Ballimage;
  float randomx =random(width);
  float randomy=random(height);
  float timestart;
}

ArrayList<Bubble>bubbles= new ArrayList(10);


ArrayList<Bubble>toRemove=new ArrayList();

void draw() {
  background(0);
  image (background, 0, 0, width, height);
  time=time+1;
  for (Bubble bub : bubbles) {
    bub.ballsize=50-(50*sin(((0.5)*(bub.timestart-time))/7)+50);
    //above is just a function that controlss the size of the bubbles appearing on screen
    image(Ballimage, bub.randomx-bub.ballsize/2, bub.randomy-bub.ballsize/2, bub.ballsize, bub.ballsize);
    if (bub.ballsize<1) {
      toRemove.add (bub);
    }
  }
  bubbles.removeAll(toRemove);
  toRemove.clear();


  if (millis() - last > 1000) {
    last=millis();
    while (true) {
      Bubble bub = new Bubble();
      bub.timestart=time;
      boolean clash = false;
      if (bub.randomx<50 || bub.randomx>width-50||bub.randomy<50||bub.randomy>height-50) {
        clash=true;
      }
      for (Bubble b : bubbles) {
        if (100>dist(b.randomx, b.randomy, bub.randomx, bub.randomy)) {
          clash = true;
        }
      }
      if (!clash) {
        if (bubbles.size()<10) {
          bubbles.add(bub);
          return;
        }
      }
    }
  }
}
void mouseClicked() {
  Bubble b = null;
  float minDist = Float.MAX_VALUE;
  for (Bubble b2 : bubbles) {
    float d = dist(b2.randomx, b2.randomy, mouseX, mouseY);
    if (d < minDist) {
      minDist = d;
      b = b2;
    }
  }
  if (b == null) {
    return;
  }
  if (minDist<b.ballsize/2) {
    toRemove.add (b);
  } else {
    println(b.ballsize, mouseX, mouseY);
  }

  bubbles.removeAll(toRemove);
  toRemove.clear();
}