let gravity;

let position;

let acceleration;

let wind;

let drag = 0.99;

let mass = 50;

let ground;

​

​

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);

  wind = createVector(0,0);

}

​

function draw() {

  background(255);

  applyForce(wind);

  applyForce(gravity);

  velocity.add(acceleration);

  velocity.mult(drag);

  position.add(velocity);

  acceleration.mult(0);

  fill("black")

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

  if (position.y > height-mass/2) {

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

      position.y = height-mass/2;

    print(position.y);

    ground = true;

    }

  else{

    ground = false;

  }

}

​

​

function applyForce(force){

  // Newton's 2nd law: F = M * A

  // or A = F / M

  let f = p5.Vector.div(force, mass);

  acceleration.add(f);

}

​

​

function keyPressed(){

  if (keyCode==LEFT_ARROW){

    wind.x=-1;

  }

  if (keyCode==RIGHT_ARROW){

    wind.x=1;

  }

  if (key==' '){

    mass=random(15,80);

    position.y=-mass;

    velocity.mult(0);

    position.x=width/2

  }

  if (key == "s") {

    // Calls a function to set up the serial connection

    setUpSerial();

  }

}

​

function readSerial(data) {

  // Check if data received is not null

  if (data != null) {

    wind.x= map(int(data), 0,1023,-1, 1)

    let sendToArduino;

    if (ground) {

     sendToArduino = "1"+"\n";

    }

    else{

       sendToArduino = "0"+"\n";

    }

    print(sendToArduino)

    writeSerial(sendToArduino);

​

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

    //SEND TO ARDUINO HERE (handshake)

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

  }

}

​