paint by pong

//PGraphics pg;

​

int cols = 600;

int rows = 600;

int i, j;

color b1, b2;

​

//float pi = 3.14;

​

// for ball

float ballX = 300;

float ballY = 300;

float ballRadius = 20;

// for making ball move

float speed = 2;

float directionX = 1;

float directionY = 1;

// for calculating distance

float longestDistance, shortestDistance; 

float distance1, distance2;

// for paddles

int paddle1X; 

int paddle2X;

int paddleY;

​

// Declare pixel Array

int[][] pixelRed = new int[cols][rows];

int[][] pixelGreen = new int[cols][rows];

int[][] pixelBlue = new int[cols][rows];

​

void setup() {

  size (600, 600);

​

  // distances between paddle and ball  

  longestDistance = sqrt(50*50 + 30*30);

  shortestDistance = 15;

  // Initialize colors

  b1 = color(203, 102, 0);

  b2 = color(0, 102, 153);

​

  // Initialize pixel RGB values

  for (j = 0; j < cols; j++) {

    for (i = 0; i < rows; i++) {

      pixelRed[i][j] = 255;

      pixelGreen[i][j] = i/3;

      pixelBlue[i][j] = j/3;

    }

  }

  //pg = createGraphics(40,40);

​

  //Draw background gradience

  // for (i = 0; i < cols; i++) {

  //   for (j = 0; j < rows; j++) {

  //     fill(0, pixelGreen[i][j]/3, pixelBlue[i][j]/3);

  //     noStroke();

  //     ellipse(i, j, 20, 20);

  //   }

  // }

  //setGradient(0,0,width/2,height,b1,b2,1);

  background(0);

}

​

void draw () {

  /* draws ball

   fill(255);

   noStroke();

   ellipse(ballX, ballY, ballRadius*2, ballRadius*2); */

​

  // draws gradience based on ball location

  if (ballY > 0 && ballY < cols && ballX > 0 && ballX < rows) {

    i = int(ballX);

    j = int(ballY);

    fill(pixelRed[i][j], pixelGreen[i][j], pixelBlue[i][j]);

    noStroke();

    ellipse(i, j, ballRadius*2, ballRadius*2);

  }  

​

  /**************** trying PGraphics */

  // pg.beginDraw();

  // pg.fill(255, 255, 255);

  // pg.noStroke();

  // pg.ellipse(ballX, ballY, ballRadius*2, ballRadius*2); 

  // pg.endDraw();

​

  move(); // make ball move

​

    noStroke();

  fill(0);

  rect(0, 0, 20, 1200); // cover left paddle trail

  fill(0);

  rect(cols, 0, 20, 1200); // cover right paddle trail

​

  // draws paddles

  fill(255);

  noStroke();

  paddleY = mouseY;

  paddle1X = 0;

  paddle2X = width;

  rectMode(CENTER);

  rect(paddle1X, paddleY, 20, 100); // left paddle

  rect(paddle2X, paddleY, 20, 100); // right paddle

​

  bounce(); // make ball bounce

}

​

/******************************* Functions */

// function make ball move

void move () {

  if (!mousePressed) {

    ballX = ballX + speed * directionX;

    //ballY = ballY + (pow(speed, 4) * directionY);

    ballY = ballY + speed * directionY;

  } else {

    //ballY = ballY + speed * directionY;

    //ballY = ballY + (sin(speed*2) * directionY);

​

    //ballY = ballY + (pow(speed, 2) * directionY);

    ballX = ballX + speed;

​

    ballY = ballY + (pow(speed, 2) * directionY);

    // fill(255,0,0);

    // ellipse(i, j, 40, 40);

  }

}

​

// function make ball bounce

void bounce () {  

  // distances between paddle and ball

  distance1 = sqrt((paddleY - ballY) * (paddleY - ballY) + (paddle1X - ballX) * (paddle1X - ballX));

  distance2 = sqrt((paddleY - ballY) * (paddleY - ballY) + (paddle2X - ballX) * (paddle2X - ballX));

​

  // ball bounce if hit top or bottom of screen

  if (ballY < 0+20 || ballY > height-20) {

    directionY = directionY * -1 + random(-.3, .3);

    ballRadius = ballRadius * 1.1;

  }

  // ball bounce if touch paddles

  else if (distance1 <= longestDistance || distance2 <= longestDistance) { 

    if (ballX == 30 || ballX == width - 30) {

      directionX = directionX * -1; 

      directionY = directionY + random(-.3, .3); 

      ballRadius = ballRadius * 1.1;

      //counter++;

    }

  }

}

​

// void mousePressed() {

//   ballY = ballY + (pow(speed, 5) * directionY);

// }

​

​