Resume/mover.js

// Gravitational Attraction
// The Nature of Code
// The Coding Train / Daniel Shiffman
// https://youtu.be/EpgB3cNhKPM
// https://thecodingtrain.com/learning/nature-of-code/2.5-gravitational-attraction.html
// https://editor.p5js.org/codingtrain/sketches/MkLraatd

class Mover {
    constructor(x, y, vx, vy, m) {
      this.pos = createVector(x, y);
      this.maxSpeed = 10;
      this.vel = createVector(vx, vy);
      this.acc = createVector(0, 0);
      this.mass = m;
      this.r = sqrt(this.mass) * 0.75;
      this.col = color(255);
    }
    
    attract(other) {
      let force = p5.Vector.sub(this.pos, other.pos);
      let distanceSq = constrain(force.magSq(), 10, 1000);
      let G = 3;
      let strength = (G * this.mass * other.mass) / distanceSq;
      force.setMag(strength);
      other.applyForce(force);
    }
  
    applyForce(force) {
      let f = p5.Vector.div(force, this.mass);
      this.acc.add(f);
    }
    
    edges() {
      if (this.pos.y >= height - this.r) {
        this.pos.y = height - this.r;
        this.vel.y *= -1;
      } else if (this.pos.y <= this.r) {
        this.pos.y = this.r;
        this.vel.y *= -1;
      }
  
      if (this.pos.x >= width - this.r) {
        this.pos.x = width - this.r;
        this.vel.x *= -1;
      } else if (this.pos.x <= this.r) {
        this.pos.x = this.r;
        this.vel.x *= -1;
      }
    }
  
    update() {
      this.vel.add(this.acc);
      this.vel.limit(this.maxSpeed);
      this.pos.add(this.vel);
      this.acc.set(0, 0);
    }
  
    show() {
      noStroke();
      fill(this.col);
      ellipse(this.pos.x, this.pos.y, this.r * 2);
    }
  }