Dot.js

class Dot {
  
  constructor(x, y) {
    this.pos = new Vector(x, y);
    this.oldpos = new Vector(x, y);
    
    this.friction = 0.97;
    this.groundFriction = 0.7;
    
    this.gravity = new Vector(0, 1);
    
    
    this.radius = 5;
    this.color = '#e62a4f';
    this.mass = 1;
  }
  
}