let velocity;

let gravity;

let position;

let acceleration;

let wind;

let drag = 0.99;

let mass = 50;

let WindLeft=0;

let WindRight=0;

​

function setup() 

{ 

// Initialising Variables 

  createCanvas(windowWidth, windowHeight);

  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, 255, 255);

  if (!serialActive) 

  { textSize(20);

    fill(10, 10, 255);

    textAlign(CENTER, CENTER);

    text("Press 'Enter' key to select Serial Port", width / 2, 30);

  }else

  {

    if(WindLeft>WindRight)

    {

// Right Winds and Arraws to Indicate the wind direction

      wind.x=1;

      stroke(10);

      strokeWeight(40);

      line(100, height / 2, 300, height / 2); 

      triangle(290, height / 2 - 5, 300, height / 2, 290, height / 2 + 5);

    }else

    {

 // Left Winds and Arraws to Indicate the wind direction

      wind.x=-1;

      stroke(10);

      strokeWeight(40);

      line(500, height / 2, 300, height / 2); 

      triangle(310, height / 2 - 5, 300, height / 2, 310, height / 2 + 5);

    }

​

    stroke(0);

    strokeWeight(1);

    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) 

    {

// A little dampening when hitting the bottom

      velocity.y *= -0.9;  

      position.y = height-mass/2;  

    }

// Sending Data to Arduino When the Ball hits the Ground for LED Lighting 

    if(position.y+mass/2==height)

    {

      writeSerial(1+'\n');

    }else

    {

      writeSerial(0+'\n'); 

    } 

  }

}

​

// Function to Apply Force

function applyForce(force)

{

  // Newton's 2nd law: F = M * A

  // or A = F / M

  let f = p5.Vector.div(force, mass);

  acceleration.add(f);

}

// Keys controlling Serial Port selection and Random Balls generation

function keyPressed()

{

  if (keyCode === ENTER) 

  {

    setUpSerial();

  }

  if (key==' ')

  {

    mass=random(15,80);

    position.y=-mass;

    velocity.mult(0);

  }

}

​

function windowResized() 

{

  resizeCanvas(windowWidth, windowHeight);

}

​

function readSerial(data)

{

  let values = data.trim().split(",");

  if (values.length === 2)

  {

    WindLeft = int(values[0]);

    WindRight = int(values[1]);

  }

  console.log("WindLeft: "+WindLeft+"    "+"WindRight: "+WindRight);

}

​

// Arduino Code can be found below

/*

​

 // Setting Global Variables

const int ledPin1 = 9; 

const int ledPin2 = 6; 

int WindLeftPin=A0;

int WindRightPin=A1;

int brightness = 0;

​

void setup()

{

​

  pinMode(ledPin1, OUTPUT);  

  pinMode(ledPin2, OUTPUT);  

 // Start serial communication

  Serial.begin(9600);     

}

​

void loop()

​

{if (Serial.available())  

{

  int WindLeft = analogRead(WindLeftPin);

  int WindRight = analogRead(WindRightPin);

  Serial.print(WindLeft);

  Serial.print(",");

  Serial.print(WindRight);

  Serial.println();

  int value = Serial.parseInt();

  if (value == 0) 

  {

    digitalWrite(ledPin1, LOW);

    digitalWrite(ledPin2, LOW);

  }

  else if (value == 1)

  {

    digitalWrite(ledPin1, HIGH);

    digitalWrite(ledPin2, HIGH);

  } 

}

}

​

*/

​

​

​

​

​

​