​

let howMany;

​

//let osc ,env, decTime;

​

//let oscTimer, oscTimerMax;

​

let size;

​

function setup() {

  createCanvas(500, 500);

  howMany = 2;

  for(let i=0; i<howMany; i++)

  {

   myFireflies.push(new Firefly(random(1,10),0,0)); 

  }

  //myFireflies = new Firefly(10,width/2,height/2);

  noStroke();

}

​

​

function draw() {

  background(250);

  for(let i=0; i< howMany; i++)

  {

    myFireflies[i].update();

    myFireflies[i].display();

    myFireflies[i].playSound(); 

  }

​

​

  //oscTimerMax = 100;

  //print(myGuy.vel.mag());

    // let c = 0.1;

    // let normal = 1;

    // let frictionMag = c * normal;

    // let friction = myGuy.vel.copy();

    // friction.mult(-1);

    // friction.normalize();

    // friction.mult(frictionMag);

  //myGuy.applyForce(friction);

}

​

class Firefly{

    constructor(tmass, tx, ty){

        this.mass = tmass;

        this.pos = createVector(tx, ty);

        this.vel = createVector(10,10);

        this.acc = createVector(0,0);

    this.mScale = 1;

    this.drag = createVector(0.5,0.5);

    //Movement

      this.timer = 0;

    this.timeMax = 100;

    this.speed = 10;

    this.myForce = createVector(random(-this.speed,this.speed),random(-this.speed,this.speed));

    //Sound

    this.env = new p5.Envelope();

    this.env.setADSR(0.03,0.05,0,0.01);

    this.env.setRange(1,0);

    this.osc = new p5.Oscillator();

    this.osc.setType('sine');

      this.osc.amp(this.env);

        this.osc.start();

    this.osc.freq(800);

    this.oscTimer=0;

    this.oscTimerMax=0;

    this.freqLow = random(600,800);

    this.freqHigh = random(900,1000);

    //this.size = 10;

    }

  applyForce(force){

    //this.vel.div(2);

    //force = Mass * acceleration

   let f = p5.Vector.div(force,this.mass); 

   this.vel.add(f);

  }

  update(){

    // this.vel.x/=1.2;

    // this.vel.y/=1.2;

   this.vel.div(1.02);

   //this.vel.add(this.acc);

   this.pos.add(this.vel);

   this.acc.mult(0);

    this.timer++;

  if(this.timer > this.timeMax)

  {

   this.timer = 0;

    this.speed = random(4,20);

    this.myForce = createVector(random(-this.speed,this.speed),random(-this.speed,this.speed));

    //console.log(myForce); 

    this.vel = this.myForce;

    this.timeMax = ceil(random(80,120));

  }

    //PACMANING

    if(this.pos.x < 0)

    {

     this.pos.x = width; 

    }

    if(this.pos.x > width)

    {

     this.pos.x = 0; 

    }

    if(this.pos.y < 0)

    {

     this.pos.y = height; 

    }

    if(this.pos.y > height)

    {

     this.pos.y = 0; 

    }

    ///

  }

  display(){

    fill(240,200,0);

    this.size = map(this.vel.mag(),0,15,15,5)

    this.size = constrain(this.size, 5,15);

    ellipse(this.pos.x,this.pos.y,this.size,this.size); 

  }

  playSound(){

    this.oscTimerMax = map(this.vel.mag(),0,10,20,7);

    //original frequency range is 900 to 1600

    this.osc.freq(map(this.vel.mag(),0,10,this.freqLow,this.freqHigh));

    this.oscTimer++;

    if(this.oscTimer > this.oscTimerMax){

     this.osc.pan(map(this.pos.x,0,width, -1.0,1.0));

     this.env.play();

     this.oscTimer = 0; 

     fill(0);

     ellipse(this.pos.x,this.pos.y,this.size,this.size);

    }

  }

}