// Daniel Shiffman

// http://natureofcode.com

​

// Path Following

// Path is a just a straight line in this example

// Via Reynolds: // http://www.red3d.com/cwr/steer/PathFollow.html

​

// Using this variable to decide whether to draw all the stuff

let debug = true;

​

// A path object (series of connected points)

let path;

​

// Two vehicles

let car1;

let car2;

​

function setup() {

  let text = createP("Hit space bar to toggle debugging lines.");

  text.position(10, 365);

​

  createCanvas(640, 360);

  path = new Path();

​

  // Each vehicle has different maxspeed and maxforce for demo purposes

  car1 = new Vehicle(0, height / 2, 2, 0.02);

  car2 = new Vehicle(0, height / 2, 3, 0.05);

}

​

function draw() {

  background(51);

  // Display the path

  path.display();

  // The boids follow the path

  car1.follow(path);

  car2.follow(path);

  // Call the generic run method (update, borders, display, etc.)

  car1.run();

  car2.run();

​

  // Check if it gets to the end of the path since it's not a loop

  car1.borders(path);

  car2.borders(path);

}

​

function keyPressed() {

  if (key == ' ') {

    debug = !debug;

  }

}