Dangerous Dave Sms — Development skill for Claude Code

Dangerous Dave – Sega Master System Port

A port of the Allegro/C++ Dangerous Dave remake to the Sega Master System, built with [devkitSMS](https://github.com/sverx/devkitSMS) and SDCC.

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Project Status

Component	Status
Game engine (physics, collision, logic)	✅ Complete
Level maps (3 placeholder levels)	✅ Structural skeleton
Graphics tile data	⚠️ Placeholder (all-zero) — needs art pipeline
Sound effects	⚠️ Stub functions — needs PSG data
ROM builds and passes ihx2sms	✅ Yes (32 KB)

The ROM compiles and links cleanly. To produce a *playable* game you need to run the art pipeline described below.

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Building

Prerequisites

Tool	Version	Where to get
SDCC	≥ 4.x	http://sdcc.sourceforge.net/
devkitSMS	latest	https://github.com/sverx/devkitSMS

devkitSMS is included partially under `SMSlib/` and `crt0_sms.rel`. `ihx2sms` is the Linux binary from devkitSMS.

make          # builds dave.sms
make clean    # removes generated files
make run      # launches in Meka emulator (if installed)

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Architecture

Original vs. SMS

Aspect	Original (Allegro/C++)	SMS Port
Resolution	640 × 480	256 × 192
Colour depth	16-bit RGB	6-bit (64 colours, 2 palettes of 16)
Graphics	Runtime BMP load (load_bitmap)	Compiled-in tile arrays
Collision	getpixel() on hidden bitmaps	Tile-flag lookup in RAM copy of tilemap
Input	key[] array (Allegro)	SMS_getKeysStatus()
Audio	None in source	PSG stubs (PSGlib-ready)
Game loop	while(!key[KEY_ESC]) busy loop	SMS_waitForVBlank() locked to 60 Hz
Enemy movement	sin/cos via floats	8-bit sin LUT, integer arithmetic
Levels	Single level (level 6 active)	3 levels with transition logic

Coordinate scaling

The original uses a 640 × 480 canvas with Dave starting at (66, 345). Scaling to 256 × 192 (factor ≈ 0.40 H, 0.40 V):

• Dav