Dangerous Dave in the Haunted Mansion — SDL3 port

A C + SDL3 source port of Dangerous Dave in the Haunted Mansion (id Software / Softdisk, 1991). The game logic is reconstructed from the disassembly of the original DOS binary, and that disassembly is the reference for the port's behaviour and for the automated checks. It renders the original EGA 320×200 graphics and plays the original PC-speaker sound.

What you need to run it

1. The original game data (not part of this repository) — put these files in one directory:

EGATILES.DD2   LEVEL01.DD2 … LEVEL08.DD2
S_DAVE.DD2  S_CHUNK1.DD2  S_CHUNK2.DD2  S_FRANK.DD2  S_MASTER.DD2
INTRO.DD2  STARPIC.DD2  PROGPIC.DD2  TITLE1.DD2  TITLE2.DD2

DAVE2.EXE is not needed: the sprite size table, the actor-info records and the tile attributes are compiled into src/dd2_sprtable.h, src/dd2_actorinfo.h and src/dd2_tileattr.h.

2. A built port (see below), i.e. dd2 or dd2.exe.

Building

Linux / macOS

You need a C compiler (gcc or clang), make and SDL3 (3.x, headers and library).

make                                    # looks for SDL3 in re/third_party/sdl3-install,
                                        # ../re/third_party/sdl3-install,
                                        # /mnt/c/Games/DD2/re/third_party/sdl3-install
make SDL3_PREFIX=/path/to/sdl3-install  # if SDL3 lives somewhere else

Windows

msvc\build.bat [Release|Debug] [x64|x86]

The script locates Visual Studio itself and downloads SDL3 if it is missing (msvc\fetch_sdl3.ps1). The result is bin\Release\dd2.exe with SDL3.dll next to it. A mingw-w64 build also works: make CC=gcc WINDRES=windres dd2_res.o.

Running

./dd2 /path/to/data                  # Linux
bin\Release\dd2.exe C:\Games\DD2     # Windows

With no argument the port looks for the data in the current directory, ./data and ../re/ref/orig.

Controls

Action	Keys
move	arrow keys or numpad 8/9/6/3/2/1/4/7 (diagonals: 9/3/1/7)
jump	CTRL
fire	ALT
start from the title	SPACE
status window	TAB
F1 / F2 / F3 / F4 / F5	information / sound on-off / keyboard setup / gamepad / reset game
quit	ESC

An SDL gamepad is picked up automatically; the input mode and buttons are configured through F4.