let gridColors = [];

let gridSize = 2;

let ellipseSize = 100;

let currentPage = -1;

let startImage;

let timer = 5; // Timer starts at 5 seconds

let timerActive = false;

​

function preload() {

  startImage = loadImage('Start.jpeg'); // Ensure the image path is correct

}

​

function setup() {

  createCanvas(600, 600);

  noLoop();

  currentColor = randomColor();

  nextColor = randomColor();

  gridColors = [randomColor(), randomColor(), randomColor(), randomColor()];

}

​

function draw() {

  if (!serialActive) {

    text("Press Space Bar to select Serial Port", 20, 30);

  } else {

    text("Connected", 20, 30);

  }

​

  if (currentPage === -1) {

    drawStartPage();

  } else if (currentPage === 0) {

    drawFirstPage();

  } else {

    drawGamePage();

  }

}

​

function drawStartPage() {

  background(startImage);

  fill(0);

  rect(width / 2 - 30, height / 2 - 20, 60, 40); // Coordinates for the Start button

  fill(255);

  textAlign(CENTER, CENTER);

  text('Start', width / 2, height / 2 + 10);

}

​

function drawFirstPage() {

  background(220);

  fill(currentColor);

  ellipse(width / 2, height / 2, 120, 120);

  if (timerActive) {

    fill(0);

    textSize(32);

    textAlign(RIGHT);

    text(`Timer: ${timer}`, width - 10, 30);  // Display the timer in the top right corner

  }

}

​

function drawGamePage() {

  background(220);

  fill(nextColor);

  ellipse(width / 2, 100, 120, 120);

  let padding = 230;

  for (let i = 0; i < gridSize; i++) {

    for (let j = 0; j < gridSize; j++) {

      fill(gridColors[i * gridSize + j]);

      ellipse(padding + j * (ellipseSize + 50), padding + i * (ellipseSize + 50), ellipseSize, ellipseSize);

    }

  }

}

​

function mouseClicked() {

  if (currentPage === -1 && mouseX > width / 2 - 30 && mouseX < width / 2 + 30 && mouseY > height / 2 - 20 && mouseY < height / 2 + 20) {

    currentPage = 0;

    timerActive = true;

    countdown();

    loop(); // Start drawing loop if stopped

  }

}

​

function countdown() {

  let interval = setInterval(() => {

    timer--;

    if (timer <= 0) {

      clearInterval(interval);

      timerActive = false;

      currentPage++; // Move to the game page

      redraw(); // Redraw to update the page view

    }

  }, 1000);

}

​

function keyPressed() {

  if (currentPage > 0) {

    let selected = -1;

    if (key === 'W') selected = 0;

    else if (key === 'A') selected = 1;

    else if (key === 'E') selected = 2;

    else if (key === 'S') selected = 3;

​

    if (selected !== -1 && gridColors[selected] === currentColor) {

      prepareNextLevel();

    }

  }

}

​

function prepareNextLevel() {

  currentColor = nextColor;

  nextColor = randomColor();

  gridColors = [randomColor(), randomColor(), randomColor(), randomColor()];

  redraw();

}

​

function randomColor() {

  return color(random(255), random(255), random(255));

}

​

​

function keyPressed() {

  if (key == " ") {

    // important to have in order to start the serial connection!!

    setUpSerial();

  }

}

​

// This function will be called by the web-serial library

// with each new *line* of data. The serial library reads

// the data until the newline and then gives it to us through

// this callback function

function readSerial(data) {

  ////////////////////////////////////

  //READ FROM ARDUINO HERE

  ////////////////////////////////////

​

  if (data != null) {

    // make sure there is actually a message

    // split the message

    let fromArduino = split(trim(data), ",");

    // if the right length, then proceed

    if (fromArduino.length == 2) {

      // only store values here

      // do everything with those values in the main draw loop

      // We take the string we get from Arduino and explicitly

      // convert it to a number by using int()

      // e.g. "103" becomes 103

      rVal = int(fromArduino[0]);

      alpha = int(fromArduino[1]);

    }

​

    //////////////////////////////////

    //SEND TO ARDUINO HERE (handshake)

    //////////////////////////////////

    let sendToArduino = left + "," + right + "\n";

    writeSerial(sendToArduino);

  }

}

​

​

​

//Arduino Code

/*

// Week 11.2 Example of bidirectional serial communication

​

// Inputs:

// - A0 - sensor connected as voltage divider (e.g. potentiometer or light sensor)

// - A1 - sensor connected as voltage divider 

//

// Outputs:

// - 2 - LED

// - 5 - LED

​

int leftLedPin = 2;

int rightLedPin = 5;

​

void setup() {

  // Start serial communication so we can send data

  // over the USB connection to our p5js sketch

  Serial.begin(9600);

​

  // We'll use the builtin LED as a status output.

  // We can't use the serial monitor since the serial connection is

  // used to communicate to p5js and only one application on the computer

  // can use a serial port at once.

  pinMode(LED_BUILTIN, OUTPUT);

​

  // Outputs on these pins

  pinMode(leftLedPin, OUTPUT);

  pinMode(rightLedPin, OUTPUT);

​

  // Blink them so we can check the wiring

  digitalWrite(leftLedPin, HIGH);

  digitalWrite(rightLedPin, HIGH);

  delay(200);

  digitalWrite(leftLedPin, LOW);

  digitalWrite(rightLedPin, LOW);

​

​

​

  // start the handshake

  while (Serial.available() <= 0) {

    digitalWrite(LED_BUILTIN, HIGH); // on/blink while waiting for serial data

    Serial.println("0,0"); // send a starting message

    delay(300);            // wait 1/3 second

    digitalWrite(LED_BUILTIN, LOW);

    delay(50);

  }

}

​

void loop() {

  // wait for data from p5 before doing something

  while (Serial.available()) {

    digitalWrite(LED_BUILTIN, HIGH); // led on while receiving data

​

    int left = Serial.parseInt();

    int right = Serial.parseInt();

    if (Serial.read() == '\n') {

      digitalWrite(leftLedPin, left);

      digitalWrite(rightLedPin, right);

      int sensor = analogRead(A0);

      delay(5);

      int sensor2 = analogRead(A1);

      delay(5);

      Serial.print(sensor);

      Serial.print(',');

      Serial.println(sensor2);

    }

  }

  digitalWrite(LED_BUILTIN, LOW);

}

*/

​