// The Coding Train / Daniel Shiffman

// https://thecodingtrain.com/CodingChallenges/160-spring-forces.html

// https://youtu.be/Rr-5HiXquhw

​

// Simple Spring: https://editor.p5js.org/codingtrain/sketches/dcd6-2mWa

// Spring Vector: https://editor.p5js.org/codingtrain/sketches/_A2pm_SSg

// Spring OOP: https://editor.p5js.org/codingtrain/sketches/9BAoEn4Po

// Soft Spring: https://editor.p5js.org/codingtrain/sketches/S5dY7qjxP

​

let bob;

let anchor;

let spring;

​

let gravity;

​

function setup() {

  createCanvas(600, 400);

  bob = new Particle(400, 190);

  anchor = new Particle(200, 210);

  spring = new Spring(0.01, 200, bob, anchor);

  gravity = createVector(0, 0.1);

}

​

function draw() {

  background(112, 50, 126);

  spring.show();

  spring.update();

​

  bob.show();

  bob.update();

  anchor.show();

  anchor.update();

​

  if (mouseIsPressed) {

    bob.position.set(mouseX, mouseY);

    bob.velocity.set(0, 0);

  }

}

​