Computer Game Programming (Fall, 2023)

TR 15:00-16:50 in Posner Hall 151.

Taught by Jim McCann (Office Hours after class in EDSH 229 or by appointment.)

With TA help from Alan Lee (Office Hours Monday 17:00-19:00 in the Smith Hall second floor common area; e-mail here.)

Games

In this class, we made a bunch of small games, as well as five final games. These games were launch[ed] live and in person on Friday, December 8th at 4-7pm in Tepper Simmons B.

• Ultimate Pillow Fight
• Assemble Monsters
• Tech Wiz
• Swordmaster
• Help, I'm Trapped in the Psychedelic Time Dimension Again (Second Time This Week)

Course Goals

Computer Game Programming will help you build the programming skills needed to turn ideas into games. This means we'll be covering both runtime systems and the asset pipelines to fuel them, along with some game-design exercises (with an eye to thrifty code).

The philosophy of this course is to learn by building games, from (nearly) the ground up — this means lots of C++ and OpenGL hacking, a smattering of scripting (shell, python, javascript), and a lot of documentation-reading. You do not need to be an expert in any of these things, but it would help if you are familiar with C++ and the modern OpenGL (3.3+) API.

Previous years with similar content: Game Programming '22, Game Programming '21, Game Programming '20, Game Programming '19, Game Programming '18, Game Programming '17, Game Programming '09.

Work

Students will be graded out of 20 + 3N + 6 points, divided as follows:

You will often be reading lesson materials asynchronously, then discussing the material in class; your class participation score will be based on your contributions to these discussions (as well as the written answers in the lesson materials). Small games will be assigned roughly weekly to highlight basic game-related functions. The Final Game will be a larger undertaking by groups of 3-4.

There are no late days; however, if your lowest small game score is less than 3, it will be replaced by a 3 when computing your grade.

Life Advice

Being sick isn't fun. University health services often has flu vaccine available starting in September. Anti-SARS-CoV-2 measures may also work well against influenza.

Mental health is an important aspect of physical health. CMU's CaPS services exist to help you manage your mental state.

If you have a disability and are registered with the Office of Disability Resources, I encourage you to use their online system to notify me of your accommodations and discuss your needs with me as early in the semester as possible. I will work with you to ensure that accommodations are provided as appropriate. If you suspect that you may have a disability and would benefit from accommodations but are not yet registered with the Office of Disability Resources, I encourage you to contact them at access@andrew.cmu.edu.

Don't Steal

Using other people's code or data without giving credit is plagiarism. Plagiarism is an immoral activity that I take very seriously. If you plagiarize, you will fail the class, and I will do my best to make sure you are removed from CMU entirely.

All you need to do to avoid plagiarism is to make sure to give credit for the code and data you use in you project. Something as simple as the comment "//based on https://wiki.libsdl.org/SDL_CreateWindow" can save your academic career from ruin.

Additionally, most human-created works are covered by copyright and thus subject to some sort of license agreement. Make sure that code and data you use has a license agreement compatible with this course. For example, I am unwilling to pay for a license for a library so I can compile your code, or sign a non-disclosure agreement so I can read it.

"AI" note: treat the output of generative "AI" tools as you do web search results. They are distillations of other people's work. You did not make them, you queried for them. Don't try to pass them off as your own work, do cite properly, do consider the licenses of any potential constituent work.

Finally, there are two course rules which restrict your use of others' code beyond the basic requirements of ethics and legality:

1. Avoid code from previous iterations of this course. There is a lot of it out there, but just don't look at it. You will learn less.
2. Follow any game-specific rules. (E.g., some games require you to author all assets yourself so you understand the tools.)

Work Together

This is a course that involves writing a lot of code. Please, by all means, work together!

• For all assignments, feel free to share code, as long as you understand the code you use, have permission to use the code, and give credit. (You still need to make different games than each-other.)
• For game4-game6, you can work in group (up to 3) and turn in a single game. I will expect more of a group than an individual (approximately, one "extra, fancy thing" in the game per extra person), and I will need to interview your group to ensure your contribution was equitable. Also, please don't work with the same people all the time.

Resources

The course does not have a textbook. However, there are several documents available on the internet that you may find useful:

• The OpenGL Specifications (of particular interest: OpenGL 3.3 and GLSL 3.30)
• docs.GL contains man pages for OpenGL functions.
• SDL Documentation
• cppreference.com the slightly-better documentation wiki for modern C++
• Advances In Real-Time Rendering SIGGRAPH course notes covering advanced rendering techniques being used in games
• Blender API Documentation, useful when writing or modifying export scripts.

There are also some great, cross-platform content-creation tools that we will use in our asset pipelines:

• GIMP is a 2D raster graphics editor
• Inkscape is a 2D vector graphics editor
• Blender is a 3D modelling, animation, and rendering suite
• Audacity is a decent free sound editor
• BeepBox is an easy-to-use music creation webapp
• JFXR is a sound-effects synthesizer in a web page

And some places to get free game assets:

• Kenney.nl has 2D and 3D assets, creative-commons licensed
• Poly Haven has a great collection of free HDR images (for image-based lighting), PBR textures (for fancy materials), and 3D models
• FreePD free, public domain music
• Incompetech royalty-free (but make sure you credit the author) music
• freesound various CC-licensed sound effects
• gameaudiogdc large pack of royalty-free game sound effects
• Google Fonts a trusted repository of fonts, many of which are licensed for general use (read the licenses, though!).

Schedule