emulator: Frotz
type: standalone
core_classification: game_engine
source: "https://gitlab.com/DavidGriffith/frotz"
upstream: "https://gitlab.com/DavidGriffith/frotz"
profiled_date: "2026-10-17"
source_commit: "2f17d64f23f3d6e68cd676d35c9d1789e17bc9fc"
core_version: "2.55pre"
display_name: "Infocom Z-Machine (SDL Frotz)"
cores:
  - "frotz"
systems:
  - "zmachine"

notes: |
  Z-machine interpreter for Infocom and Inform story files (versions 1
  to 8). Recalbox builds the SDL front end, sfrotz, and launches it with
  a generated config file and the story file.

  sf_initfonts() builds the text and fixed-width fonts from the bitmap
  compiled into sf_deffont.c (ref: src/sdl/sf_deffont.c:22) and the
  character graphics font from SF_font3 (ref: src/sdl/sf_fonts.c:979-989).
  TrueType fonts are loaded only when the config file names them under
  [Fonts] (ref: src/sdl/sf_resource.c:402-413), and a font that fails to
  load is reported and skipped (ref: src/sdl/sf_fonts.c:959-973). No
  default font path exists.

  Pictures and sounds come from the story's Blorb data or from loose
  resource files under the [Resources] Dir setting, "./" by default
  (ref: src/sdl/sf_resource.c:75, 415). Both belong to the game.

exclusion_note: "fonts compiled into the binary; external TrueType fonts only when the user config names them"
files: []