// The Nature of Code

// The Coding Train / Daniel Shiffman

// https://youtu.be/Q4MU7pkDYmQ

// https://thecodingtrain.com/learning/nature-of-code/5.3-flee-pursue-evade.html

​

// Flee: https://editor.p5js.org/codingtrain/sketches/v-VoQtETO

// Pursue: https://editor.p5js.org/codingtrain/sketches/Lx3PJMq4m

// Evade: https://editor.p5js.org/codingtrain/sketches/X3ph02Byx

// Pursue Bouncing Ball: https://editor.p5js.org/codingtrain/sketches/itlyDq3ZB

// Pursue Wander: https://editor.p5js.org/codingtrain/sketches/EEnmY04lt

// Pursue Slider Prediction: https://editor.p5js.org/codingtrain/sketches/l7MgPpTUB

​

let pursuer;

let target;

let slider;

let pause = false;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  pursuer = new Vehicle(50, 50);

  target = new Target(width - 50, height - 50);

  slider = createSlider(1, 50, 10);

  slider.position(10, 10);

}

​

function mousePressed() {

  pause = true;

}

​

function mouseReleased() {

  pause = false;

}

​

function draw() {

  background(0);

​

  let steering = pursuer.pursue(target);

  pursuer.applyForce(steering);

​

  let d = p5.Vector.dist(pursuer.pos, target.pos);

  if (d < pursuer.r + target.r) {

    target = new Target(random(width), random(height));

    pursuer.pos.set(width / 2, height / 2);

  }

​

  if (!pause) {

    pursuer.update();

    target.update();

  }

  pursuer.show();

​

  target.edges();

  target.show();

}

​