65 lines, no comments · 1,832 tokens, written in 16 seconds for $0.012

 1  let particles = [];
 2  const COUNT = 110;
 3  
 4  function setup() {
 5    createCanvas(windowWidth, windowHeight);
 6    colorMode(HSB, 360, 100, 100, 100);
 7    for (let i = 0; i < COUNT; i++) particles.push(new Particle());
 8  }
 9  
10  function draw() {
11    background(232, 42, 7, 16);
12    for (let i = 0; i < particles.length; i++) {
13      const a = particles[i];
14      a.update();
15      for (let j = i + 1; j < particles.length; j++) {
16        const b = particles[j];
17        const d = dist(a.pos.x, a.pos.y, b.pos.x, b.pos.y);
18        if (d < 120) {
19          stroke((a.hue + b.hue) * 0.5, 55, 100, map(d, 0, 120, 38, 0));
20          strokeWeight(1);
21          line(a.pos.x, a.pos.y, b.pos.x, b.pos.y);
22        }
23      }
24      a.show();
25    }
26  }
27  
28  class Particle {
29    constructor() {
30      this.pos = createVector(random(width), random(height));
31      this.vel = p5.Vector.random2D().mult(random(0.3, 1.2));
32      this.hue = random(160, 290);
33      this.r = random(2.5, 5.5);
34    }
35  
36    update() {
37      const n = noise(this.pos.x * 0.0028, this.pos.y * 0.0028, frameCount * 0.004);
38      const ang = n * TWO_PI * 2;
39      this.vel.add(cos(ang) * 0.07, sin(ang) * 0.07);
40      const m = createVector(mouseX, mouseY);
41      const d = p5.Vector.dist(this.pos, m);
42      if (d < 150 && d > 0) {
43        this.vel.add(p5.Vector.sub(this.pos, m).setMag(map(d, 0, 150, 0.7, 0)));
44      }
45      this.vel.limit(2.1);
46      this.pos.add(this.vel);
47      if (this.pos.x < 0) this.pos.x = width;
48      if (this.pos.x > width) this.pos.x = 0;
49      if (this.pos.y < 0) this.pos.y = height;
50      if (this.pos.y > height) this.pos.y = 0;
51    }
52  
53    show() {
54      noStroke();
55      fill(this.hue, 40, 100, 22);
56      circle(this.pos.x, this.pos.y, this.r * 4);
57      fill(this.hue, 65, 100, 92);
58      circle(this.pos.x, this.pos.y, this.r);
59    }
60  }
61  
62  function windowResized() {
63    resizeCanvas(windowWidth, windowHeight);
64  }
65