let outsideTemp = 20.0;

let reference = 40.0;

let difference;

​

let button;

​

let temperature = 25.0

const k = 0.05;

const HEATER_POWER = 5.0;

const TOLERANCE = 5.0;

const UPDATE_INTERVAL = 10;

const FRAME_RATE = 25;      // changes heating speed too :(

const SIMULATION_LENGTH = 30.0;

let ballColor = [200,200,200];

​

let temperatureRecord = [];

let currTime = 0.0;

let loopCount = 0;

​

function setup() {

  createCanvas(400, 400);

  frameRate(FRAME_RATE);

}

​

function draw() {

  background(230);

  drawBall();

  ballSimulation();

  // your automated code goes here:

  // You want to use the temperature variable and the heaterOn and heaterOff functions to get the temperature to stay at 40 degrees.

  automated_temperature_control()

}

​

function heaterOn(){

  heaterPower = HEATER_POWER;

  ballColor = [200,50,50]

}

function heaterOff(){

  heaterPower = 0.0;

  ballColor = [200,200,200]

}

​

function drawBall(){

  fill(ballColor);

  circle(200,200,100);

  fill(0);

  textSize(width / 10);

  textAlign(CENTER, CENTER);

  text(temperature.toFixed(1),200,200)

}

​

function ballSimulation(){

  let deltaTemp =(-(temperature - outsideTemp)*k+heaterPower)*0.05

  temperature += deltaTemp

  if(loopCount == UPDATE_INTERVAL){

    loopCount = 0;

    currTime += 1.0 / FRAME_RATE * UPDATE_INTERVAL

    temperatureRecord.push([currTime,temperature])

  }

  else{

    loopCount += 1

  }

  if(currTime >= SIMULATION_LENGTH){

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

      console.log(temperatureRecord[i][0]+"\t" + temperatureRecord[i][1]);

    }

    noLoop();

  }

}

​

function mousePressed(){

  heaterOn();

  ballColor = [200,50,50]

}

function mouseReleased(){

  heaterOff();

  ballColor = [200,200,200]

}

​

function automated_temperature_control() {

  // This will keep the temperature automatically at 40 degrees!

  difference = reference - temperature

  if(difference > 0.195) {

    heaterOn()

  } 

  else

  {

    heaterOff()

  }

}