* Originally by Aaron Sherwood

 * Modified by Mangtronix

 *

 * Add this library to Sketch files

 *  https://github.com/mangtronix/IntroductionToInteractiveMedia/blob/master/code/p5.web-serial.js files

 *

 * Arduino code:

 * https://github.com/mangtronix/IntroductionToInteractiveMedia/blob/master/code/Week11Serial.ino

 */

​

let lightUp = 0;

​

let velocity;

let gravity;

let position;

let acceleration;

let wind;

let myWind;

let drag = 0.99;

let mass = 50;

​

let windX;

​

​

function setup() {

  createCanvas(640, 360);

  noFill();

  position = createVector(width/2, 0);

  velocity = createVector(0,0);

  acceleration = createVector(0,0);

  gravity = createVector(0, 0.5*mass);

  myWind = createVector(0,0);

  wind = createVector(0,0);

  textSize(18);

}

​

function draw() {

  background(255)

​

  if (!serialActive) {

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

  } else {

    text("Connected", 20, 30);

​

  }

​

  background(255);

  myWind.y = 0;

  //windX = int(map(windX, 0, 1023, -1, 1))

  //myWind.x = myWind.x+ windX;

  if(windX==0){

    mass=random(15,80);

    position.y=-mass;

    velocity.mult(0);

  }else if(windX<512){

    windX = -1;

  }else{

    windX = 1;

  }

  myWind.x = windX;

  applyForce(myWind);

  //applyForce(wind);

  applyForce(gravity);

  velocity.add(acceleration);

  velocity.mult(drag);

  position.add(velocity);

  acceleration.mult(0);

  ellipse(position.x,position.y,mass,mass);

  if (position.y > height-mass/2) {

      velocity.y *= -0.9;  // A little dampening when hitting the bottom

      lightUp = 1;

      position.y = height-mass/2;

  }else{lightUp=0;}

}

​

function keyPressed() {

  if (key == " ") {

    setUpSerial();

  }

  if (key == UP_ARROW){

  }

}

​

function readSerial(data) {

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

  //READ FROM ARDUINO HERE

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

​

  if (data != null) {

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

    if (fromArduino.length == 1) {

      windX = fromArduino[0];

      print(windX)

    }

​

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

    //SEND TO ARDUINO HERE (handshake)

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

    let sendToArduino = lightUp + "\n";

    writeSerial(sendToArduino);

  }

}

​

function applyForce(force){

  // Newton's 2nd law: F = M * A

  // or A = F / M

  let f = p5.Vector.div(force, mass);

  acceleration.add(f);

}

​

​

//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() {

  Serial.begin(9600);

​

  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"); // 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(rightLedPin, right);

      int sensor2 = analogRead(A0);

      delay(5);

      Serial.println(sensor2);

    }

  }

  //digitalWrite(LED_BUILTIN, LOW);

}

*/

​