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Code Your First Game: Arcade Classic in JavaScript on Canvas

Program a complete game today. No special software or install required. All you need is a text editor and a web browser.
Instructor:
Chris DeLeon
253,331 students enrolled
English [Auto-generated]
Display, position, and move filled shapes for retro and prototype gameplay
Move a ball around your game space such that it bounces off boundaries
Handle real-time mouse input
Detect and respond to simple collisions
Program very basic artificial intelligence
Keep and display score during play
Understand the subtle, key difference between a classic game in this style which is fun to play versus one that isn't
Define and code a win condition and end state for your game

At the end of this short course you’ll have programmed your first game. You’ll learn gameplay development fundamentals by really doing it – writing and running real code on your own machine.

Each step of the course has the source code attached exactly as it should look at that time (click “View Resources” then “Downloadable Resources”), for you to compare to or pick up from, so you can’t get stuck!

Begin Your Game Programming Journey the Proven Way

“Make the simplest game possible.” “Program a ball and paddle project.” “Practice by first remaking something from the 1970’s.” All beginning developers hear this advice from more experienced peers… because it works!

By following this approach you will:

  • Learn design from a fun classic that people know and enjoy.
  • Start your practice today – now! – without waiting for an idea.
  • Finish your game in hours or in a weekend, not over months.
  • Understand every line of code used in the entire program.
  • Avoid distraction from searching for or creating detailed art.
  • Master fundamentals needed to make your own games better.

You can program this game with a normal text editor, and run it in the web browser you already have. No special software is needed.

Though you’ll be coding in JavaScript for HTML5 canvas in this course, the focus is on common game programming concepts. You can later apply these same patterns to get quick results in other programming languages such as C#, Java, ActionScript 3, C++, or Python.

I’m a private game development trainer, and for clients new to gameplay programming this is exactly the material that I cover to get them started quickly. Within hours you will have finished programming your first project. This is the fastest way to get results. The momentum gained from doing this provides a solid foundation to give more advanced concepts meaning and context as you continue on in your journey of learning game development.

(HTML5 Logo in the course image is by W3C, licensed under Creative Commons Attribution 3.0 Unported.)

Setting Up the Code and Learning Essential Concepts

1
Introduction and First Code File

By following along with this video you'll create your first code file by using a plain text editor, and you'll test run that code by using any common web browser. You'll also see how to view your browser's console, which will be very useful for troubleshooting errors later.

In case you get stuck at any point in this video – or any one later in this course – you can download each video's example source code zip file in order to have a snapshot of exactly how the code ought to look after completing each step covered in this course.

2
Drawing and Positions

You'll learn how to draw, position, and change the dimensions of rectangles on the screen. This drawing technique will soon be used to represent both paddle positions.

3
Movement and Time

Live action with motion requires that the code doesn't just happen once – it has to keep running over and over again. In this step you'll get that working, and by doing so you'll open up a whole world of possibilities for dynamic movements and interactivity.

4
Clean Up the Code

For this brief intermission we'll take a few moments to rethink how the functionality has been programmed so far. These changes will not affect what the game does, but they will make the upcoming changes much easier. This type of "refactoring" as the program grows is a common part of programming.

Getting the Core Gameplay Working

1
Bouncing the Ball

Here you'll write code to detect when the ball is crossing an edge of the graphics canvas. As it does so, you'll reverse its direction to bounce it off the boundaries, keeping the ball in play and in view.

2
Circle Draw Details

Drawing a circle is a bit more involved than drawing a rectangle, but the game will look much better with a round ball. You'll learn in this step how to display a filled circle on the screen. Next you'll hide all the complex details of doing so in a new helper function, which will greatly reduce how much you'll need to remember or figure out for the next time that you need to draw a circle.

3
Ball 2D Motion, Paddle

So far, the ball only moved side-to-side. Now with this step you'll move and bounce the ball vertically, as well. You'll also hook up the paddle's position to follow your mouse input.

4
Ball Reset and Collision

You'll now write the ball collision code for each paddle, causing the ball to reset instantly whenever it collides with the left or right side unless it's striking an area blocked by the paddle.

5
Paddle AI and Scoring

Here you'll program the right paddle to move and play automatically by implementing a basic form of artificial intelligence. You'll also add scoring to the game, giving your player a way to see how well he or she is performing against the computer opponent.

Polishing Details for a Better Experience

1
Ball Control & Winning

There is a subtle but very important design detail in how the ball is supposed to behave when it collides with a paddle, which you'll implement in this step. Secondly, by the end of this lecture you'll have the game set up to end as soon as either player reaches a clearly defined goal score.

2
Mouse Click, Draw Net

This is the final stretch! You'll let the player reset a completed round by clicking the mouse, and you'll add a decorative net to the center of the playfield.

In closing, I'll briefly explain how you can carry your momentum from today forward into continuing to learn and practice more about videogame development with this approach.

3
Bonus Lecture: Join HomeTeamGameDev.com - it includes our second course+textbook

This course is also included with membership in our worldwide, mentored, team practice community, which you can find out more about at HomeTeamGameDev.com

The full textbook PDF and its related source code is included with the new course!

You can view and review the lecture materials indefinitely, like an on-demand channel.
Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don't have an internet connection, some instructors also let their students download course lectures. That's up to the instructor though, so make sure you get on their good side!
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