const num = 4000;

const noiseScale = 0.01 / 2;

let ball;

​

function setup() {

  createCanvas(600, 600);

​

  // Create and initialize particle objects

  for (let i = 0; i < num; i++) {

    particles.push(new Point(random(width), random(height)));

  }

​

  // Create the wandering ball

  ball = new Ball();

  clear();

}

​

function draw() {

  background(0, 10);

  stroke('pink');

​

  // Update and display the wandering ball

  ball.update();

  ball.display();

​

  // Loop through all particles

  for (let i = 0; i < num; i++) {

    let p = particles[i];

    p.avoid(ball);  // Add avoidance behavior here

    p.display();

    p.update();

  }

}

​

function mouseReleased() {

  // Seed noise with millisecond value to create variation

  noiseSeed(millis());

}

​

// Ball class to define wandering ball behavior

class Ball {

  constructor() {

    this.position = createVector(random(width), random(height));

    this.velocity = p5.Vector.random2D(); // Random initial velocity

    this.speed = 2;

  }

​

  update() {

    // Random wandering motion

    this.velocity.add(p5.Vector.random2D().mult(0.5)); // Adjust this for more randomness

    this.velocity.limit(this.speed);

    this.position.add(this.velocity);

​

    // Keep the ball within the canvas

    if (this.position.x > width || this.position.x < 0) this.velocity.x *= -1;

    if (this.position.y > height || this.position.y < 0) this.velocity.y *= -1;

  }

​

  display() {

    fill(255, 0, 0);

    noStroke();

    ellipse(this.position.x, this.position.y, 30, 30); // Draw the ball

  }

}

​

​