2048

2048 is a port of the famous video game to Ashet OS.

§1 Controls

TODO: Write about the controls of 2048.

§2 Background

This implementation of the game was fully vibe-coded inside ChatGPT with GPT 5.2 (Thinking). This was done in an attempt to evaluate the capabilities of newly released AI model. The results were rather impressive.

The model was prompted three times, where one time it responded with some clarifying questions, and the second response already had a working game implementation. The third prompt requested to implement animation support and streamline some user interface parts.

§2.1 Prompts

§2.1.1 First Prompt

i've attached a small hello-world like program for graphical applications,
and the file containing the CommandQueue structure.
I've also attached the kernel api definition containing basically all necessary enums.

Implement a "2048" style game for Ashet OS.

Do not assume much about the code structure, and if something is unclear, ask me
about it before you write any code.

In addition to that, the hello-framebuffer.zig application source code, graphics.zig (userland bindings for AGP) as well as the ashet.abi file (kernel interface description) were attached. These files provide information on how to write a really basic application, what rendering ops are available and how the kernel surface looks like.

§2.1.2 Second Prompt

The model then processed the data, and a asked a hand ful of clarifying questions. These were answered with this:

1. mono-8 is a good font with 8 pixels height and 5 pixels width pet char.
2. Use a std.Random.DefaultPrng
3. Use an in-game overlay
4. arrow keys, wasd, numpad, and R for restart

After this prompt was evaluated, the model yielded a fully working implementation of 2048. The only touch-ups that were required are two missing @divTrunc calls (which even seasoned Zig programmers will often forget), as well as fixing a tiny hallucination that the ashet.clock.monotonic syscall would be returning an error.

§2.1.3 Third Prompt

The game was playable, but not really enjoyable, some minor polishing was needed. The third prompt was this:

okay, i had to some fixes in Color.from_html, and adjust the default window size to 256x256.

I've attached the working, compiling version here. changes i want to have:
- tiny move animation with 4 or 8 frames
- allow playing after winning
- remove the "2048" title in the window (we have window decorations!)
- use mono-6 font for the tutorial text line

This resulted in again a working version of the game with the requested changes applied, and the three bugs were re-introduced again (as the model was unaware they were fixed). No other bugs except for these three were obviously present in the code.