var path; 

const MAXSPEED = 1;

const MAXFORCE = 1;

const dt = 1;

var numsubstep = 2;

var spawnradius = 50;

const population = 10;

​

//sliders and such

let arriveSlider = 0.04;

let fleeSlider = 0.16;

​

​

function setup() {

  wid = floor(windowWidth);

  hit = floor(windowHeight);

  createCanvas(wid, hit);  

​

  // for(var i = 0; i < population; i++){

  //   append(particles, new Particle(random(wid),random(hit/2,hit)));  

  // }

  //random shape path

  path = new Path(50);

  path.addPoint(200,100);

  path.addPoint(wid-200,100);

  path.addPoint(wid-200,hit-400);

  path.addPoint(wid/2,hit-500);

  path.addPoint(200,hit-400);

  path.addPoint(200,100);

  //"bridge" paths

  // path = new Path(100);

  // path.addPoint(200,100);

  // path.addPoint(200,300);

    // Create a slider with min, max, and starting value

  arriveSlider = createSlider(0, 1, arriveSlider, 0.01);

  arriveSlider.position(10, height + 10);

  arriveSlider.style('width', '380px');

  fleeSlider = createSlider(0, 1, fleeSlider, 0.01);

  fleeSlider.position(10, height + 50);

  fleeSlider.style('width', '380px');

}

​

//Add particles

// function mouseDragged(){

//   append(particles, new Particle(mouseX,mouseY));

// }

​

//Add particles is spawn radius

function mousePressed(){

  for(var i = 0; i < population; i++){

    append(particles, new Particle(random(mouseX-10,mouseX+10),random(mouseY-10,mouseY+10)));  

  }

}

​

function draw() {

  background(100);

  path.display();

  strokeWeight(1);

  for(i = 0; i < particles.length;i++){

    particle = particles[i];

    //substepping

    for(j = 1; j <= numsubstep; j++){

      var distance = particle.predict(path);

      if (distance > path.radius/2){

        particle.findTarget(particle.normalPoint);

      }

      particle.behaviors(particles);

      particle.update();  

    }

    particle.show();      

  }

  //Stats

  let fps = frameRate();

  if(fps <= 10){

    console.log("Under 10 fps with "+particles.length );

  }

  fill(0);

  stroke(0);

  text("FPS: " + fps.toFixed(2) + " | Particles: " + particles.length, 10, height - 20);

}

​

​

​

///

​

​

function Grid(size){

  this.size = size;

}

​

Grid.prototype.get = function(x,y){

  //return all particles within the the x,y grid of size w,h

}

​

​

​

​

​