// Path Following
// Daniel Shiffman <http://www.shiffman.net>
// The Nature of Code, Spring 2009

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

// Using this variable to decide whether to draw all the stuff
//boolean debug = true;
boolean debug = false;

PFont f;

// A path object (series of connected points)
Path path;



// Two boids
//Boid boid0;
//Boid boid1;

// Array of boids
Boid [] boids = new Boid [100];

void setup() {

  //Each client is 2720x768 making a total resolution of 8160x768.
  //size(640,320);
  size(1280,361);  //1280x800 display: 1 client
  //size(1280,120);  //1280x800 display: 3 clients
  //frameRate(5);
  smooth();
  f = createFont("Georgia",12,true);

  // Call a function to generate new Path object
  newPath();

  //Each boid has different maxspeed and maxforce for demo purposes
  //boid0 = new Boid(new PVector(0,height/2),3,0.1);
  //boid1 = new Boid(new PVector(0,height/2),5,0.1);
  for (int i=0; i<boids.length; i++) {
    boids[i] = new Boid(new PVector(0,(height/4)+random(-20,20)),random(3,6),0.1);
    //boids[i] = new Boid(new PVector(0,height/4),random(3,6),0.1);
   // background(233,226,208);
    background(0);
  }
}

void draw() {
  //background(255);
  // Display the path
  path.display();
  // The boids follow the path
  //boid0.follow(path);
  //boid1.follow(path);

  for (int i=0; i<boids.length; i++) {
    boids[i].follow(path);
  }

  if (mousePressed) {
    PVector f = new PVector(0,0.2);
    //boid0.applyForce(f);
    //boid1.applyForce(f);
    //println(f);
  }


  // Call the generic run method (update, borders, display, etc.)
  //boid0.run();
  //boid1.run();
  for (int i=0; i<boids.length; i++) {
    boids[i].run();
    boidCounter();
  }




  // Instructions
  textFont(f);
  fill(0);
  //text("Hit space bar to toggle debugging lines.\nClick the mouse to generate a new path.",10,height-30);
  text("Hit space bar to toggle debugging lines.",10,height-30);
}


void boidCounter() {
  for (int i = 0; i < boids.length; i++) {


  }
}

void newPath() {
  // A path is a series of connected points
  // A more sophisticated path might be a curve
  path = new Path();
  //for (int x = 0; x < width+20; x+=20) {
  /*  for (int x = 0; x < width/4; x+=20) {   
   path.addPoint(x,160);
   }
   */

  int x = width/5;
  int y = height/4;

  path.addPoint(0,height/4);
  path.addPoint(width/5,height/4);
  path.addPoint(2*width/5,3*height/4);
  path.addPoint(3*width/5,3*height/4);
  path.addPoint(4*width/5,height/4);  
  path.addPoint(width,height/4);

  /*path.addPoint(0,height/2);
   path.addPoint(random(0,width/2),random(0,height));
   path.addPoint(random(width/2,width),random(0,height));
   path.addPoint(width,height/2);*/
}

public void keyPressed() {
  debug = !debug;
}

public void mousePressed() {
  newPath();
}