//https://editor.p5js.org/aaronsherwood/sketches/q2Pl77SWl

//https://editor.p5js.org/aaronsherwood/sketches/I7iQrNCul

​

//Ball Physics

let velocity;

let gravity;

let position;

let acceleration;

let wind;

let drag = 0.99;

let mass = 50;

//Variable for Checking Bounce

let bounce = 0;

​

​

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);

  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;

      bounce = 1;

  } else{

    bounce = 0;

  }

​

  if (!serialActive) {

    print("Press Space Bar to select Serial Port");

  } else {

    print("Connected");

  }

}

​

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 (key==' '){

    if (!serialActive){

    setUpSerial();

    }

    mass = random(15,80);

    position.x = 320;

    position.y = -mass;

    velocity.mult(0);

  }

}

​

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 == 1) {

      // only store values here

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

      wind.x = fromArduino[0];

      print(wind.x);

    }

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

    //SEND TO ARDUINO HERE (handshake)

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

    let sendToArduino = bounce + "\n";

    writeSerial(sendToArduino);

    print("Sent to Arduino: " + bounce);

  }

}

​

//Arduino Code

/*

//Initialize Variables

int potentio = A2;

int led = 5;

int bounce = 0;

​

void setup() {

  Serial.begin(9600);

  pinMode(5, OUTPUT); //Set pin

  digitalWrite(led, LOW);

  // Starts connection

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

    Serial.println("0"); // Starting Message

    delay(300);

  }

}

​

void loop() {

  // Wait for data from p5 before doing something

  while (Serial.available()) {

    bounce = Serial.parseInt(); 

    if (Serial.read() == '\n') { 

      digitalWrite(led, bounce);

      delay(1);

      int potValue = analogRead(potentio);

      delay(1);

      if (potValue < 512){

        Serial.println(-1);

      } else {

        Serial.println(1);

      }

    }

  }

}

*/

​