45 lines, no comments · collected by hand from claude.ai

 1  let balls = [];
 2  
 3  function setup() {
 4    createCanvas(400, 400);
 5    for (let i = 0; i < 20; i++) {
 6      balls.push(new Ball());
 7    }
 8  }
 9  
10  function draw() {
11    background(0, 20);
12    for (let ball of balls) {
13      ball.move();
14      ball.display();
15    }
16  }
17  
18  class Ball {
19    constructor() {
20      this.x = random(width);
21      this.y = random(height);
22      this.xspeed = random(-2, 2);
23      this.yspeed = random(-2, 2);
24      this.r = random(10, 30);
25      this.c = color(random(255), random(255), random(255), 100);
26    }
27    
28    move() {
29      this.x += this.xspeed;
30      this.y += this.yspeed;
31      
32      if (this.x < 0 || this.x > width) {
33        this.xspeed *= -1;
34      }
35      if (this.y < 0 || this.y > height) {
36        this.yspeed *= -1;
37      }
38    }
39    
40    display() {
41      noStroke();
42      fill(this.c);
43      ellipse(this.x, this.y, this.r);
44    }
45  }