float r = 10;
ArrayList<Block> blocks=new ArrayList<Block>();


void setup() {
  size(600, 600);
  blocks = new ArrayList<Block>();
  blocks.add(new Block(200, 200, r));
}

void draw() {
  background(30);
  for (int i = blocks.size() - 1; i >= 0; i--) {
    Block block = blocks.get(i);


    block.display();
    block.gravi();
    block.stope();

  }
}
void mousePressed() {
  blocks.add (new Block(mouseX, mouseY, r));
}


class Block {
  float r = 10;
  PVector position;
  float grav;
  Block(float tempX, float tempY, float tempR ) {
    position = new PVector (tempX, tempY);
    r = tempR;
    grav = 0.5;
  }

  void display() {
    rect(position.x, position.y, r, r);
  }
  void gravi() {
    position.y = position.y + grav;
  }
  void stope() {
    if (position.y >= height-r) {
      grav=grav*0;
    }
  }

}