cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              <!-- https://www.udemy.com/code-your-first-game   
 
 
<!-- I'm trying to get the pause & continue button to work~ 

If anyone is willing to help me understand how to do it through commenting or forking. I'll be thankful. -->
 
<canvas id="gameCanvas" width="800" height="600"></canvas>
            
          
!
            
              /* note to self. add sounds */ 


*{box-sizing: border-box;}

body {
 
 text-align: center;
 background: #000;
 color: #fff;
}

canvas{
  border: 3px solid #fff; 
  width: 90vw;
  height: 100vh;
}
            
          
!
            
              var canvas;
var canvasContext;
var ballX = 50;
var ballY = 50;
var ballSpeedX = 10;
var ballSpeedY = 4;
var ballSize = 10;
var audioBall = new Audio('http://k003.kiwi6.com/hotlink/j7bojxmvbi/tennisserve.mp3');
var player1Score = 0;
var player2Score = 0;
const WINNING_SCORE = 10;
var showingWinScreen = false;
var paddle1Y = 250;
var paddle2Y = 250;
const PADDLE_THICKNESS = 10;
const PADDLE_HEIGHT = 100;
function calculateMousePos(evt) {
  var rect = canvas.getBoundingClientRect();
  var root = document.documentElement;
  var mouseX = evt.clientX - rect.left - root.scrollLeft;
  var mouseY = evt.clientY - rect.top - root.scrollTop;
  return {
    x: mouseX,
    y: mouseY
  };
}
function handleMouseClick(evt) {
  if (showingWinScreen) {
    player1Score = 0;
    player2Score = 0;
    showingWinScreen = false;
  }
}
window.onload = function() {
  canvas = document.getElementById('gameCanvas');
  canvasContext = canvas.getContext('2d');
  canvasContext.font = "30px Arial";
  var framesPerSecond = 30;
  setInterval(function() {
    moveEverything();
    drawEverything();
  }, 1000 / framesPerSecond);
  canvas.addEventListener('mousedown', handleMouseClick);
  canvas.addEventListener('mousemove', function(evt) {
    var mousePos = calculateMousePos(evt);
    paddle1Y = mousePos.y - (PADDLE_HEIGHT / 2);
  });
}
function ballReset() {
  if (player1Score >= WINNING_SCORE ||
    player2Score >= WINNING_SCORE) {
    showingWinScreen = true;
  }
  ballSpeedX = -ballSpeedX;
  ballX = canvas.width / 2;
  ballY = canvas.height / 2;
}
function computerMovement() {
  var paddle2YCenter = paddle2Y + (PADDLE_HEIGHT / 2);
  if (paddle2YCenter < ballY - 35) {
    paddle2Y += 6;
  } else if (paddle2YCenter > ballY + 35) {
    paddle2Y -= 6;
  }
}
function moveEverything() {
  if (showingWinScreen) {
    return;
  }
  computerMovement();
  ballX += ballSpeedX;
  ballY += ballSpeedY;
  if (ballX < 0) {
    if (ballY > paddle1Y &&
      ballY < paddle1Y + PADDLE_HEIGHT) {
      ballSpeedX = -ballSpeedX;
      audioBall.play(); //audio
      //
      var deltaY = ballY -
        (paddle1Y + PADDLE_HEIGHT / 2);
      ballSpeedY = deltaY * 0.35;
    } else {
      player2Score++; // must be BEFORE ballReset()
      ballReset();
    }
  }
  
  
  
  if (ballX > canvas.width) {
    if (ballY > paddle2Y &&
      ballY < paddle2Y + PADDLE_HEIGHT) {
      ballSpeedX = -ballSpeedX;
      audioBall.play(); //audio
      //
      var deltaY = ballY -
        (paddle2Y + PADDLE_HEIGHT / 2);
      ballSpeedY = deltaY * 0.35;
    } else {
      player1Score++; // must be BEFORE ballReset()
      ballReset();
    }
  }
  
  
  
  
  if (ballY < 0) {
    ballSpeedY = -ballSpeedY;
  }
  if (ballY > canvas.height) {
    ballSpeedY = -ballSpeedY;
  }
}
function drawNet() {
  for (var i = 0; i < canvas.height; i += 40) {
    colorRect(canvas.width / 2 - 1, i, 2, 20, 'white');
  }
}
function drawEverything() {
  // next line blanks out th escreen with black.	 
  colorRect(0, 0, canvas.width, canvas.height, 'black');
  if (showingWinScreen) {
    canvasContext.fillStyle = 'white';
    if (player1Score >= WINNING_SCORE) {
      canvasContext.fillText("You Won!", 350, 200);
    } else if (player2Score >= WINNING_SCORE) {
      canvasContext.fillText("You didn't win. Try again.", 250, 200);
    }
    canvasContext.fillStyle = '#adff2f';
    canvasContext.fillText("click to continue", 300, 500);
    return;
  }
  drawNet();
  // this is LEFT player paddle.    
  colorRect(0, paddle1Y, PADDLE_THICKNESS, PADDLE_HEIGHT, 'white');
  // this is RIGHT computer paddle.    
  colorRect(canvas.width - PADDLE_THICKNESS, paddle2Y, PADDLE_THICKNESS, PADDLE_HEIGHT, 'white');
  canvasContext.fillText(player1Score, 100, 100);
  canvasContext.fillText(player2Score, canvas.width - 100, 100);
  // next line draws the ball.
  colorCircle(ballX, ballY, ballSize, generateColor());
}
function generateColor(ranges) {
  if (!ranges) {
    ranges = [
      [0, 256],
      [0, 256]
    ];
  }
  var g = function() {
    //select random range and remove
    var range = ranges.splice(Math.floor(Math.random() * ranges.length), 1)[0];
    //pick a random number from within the range
    return Math.floor(Math.random() * (range[1] - range[0])) + range[0];
  }
  return "rgb(" + g() + "," + 255 + "," + g() + ")";
}
//keep it in the shage of green~^^
function colorCircle(centerX, centerY, radius, drawColor) {
  canvasContext.fillStyle = drawColor;
  canvasContext.beginPath();
  canvasContext.arc(centerX, centerY, radius, 0, Math.PI * 2, true);
  canvasContext.fill();
}
function colorRect(leftX, topY, width, height, drawColor) {
  canvasContext.fillStyle = drawColor;
  canvasContext.fillRect(leftX, topY, width, height);
}
    
    
            
          
!
999px
Close

Asset uploading is a PRO feature.

As a PRO member, you can drag-and-drop upload files here to use as resources. Images, Libraries, JSON data... anything you want. You can even edit them anytime, like any other code on CodePen.

Go PRO

Loading ..................

Console