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feat: add rigelengine profile
Duke Nukem II engine. NUKEM2.CMP validates the game path and holds every asset; the five intro movies are skipped when absent.
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Abdessamad Derraz committed
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emulator: RigelEngine
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type: standalone
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core_classification: game_engine
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source: "https://github.com/lethal-guitar/RigelEngine"
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upstream: "https://github.com/lethal-guitar/RigelEngine"
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profiled_date: "2026-10-22"
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source_commit: "30afeff8f0b105eac77ee0a2fbd54b06e1a49b60"
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core_version: "0.9.1-28-g30afeff8"
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display_name: "Duke Nukem II (RigelEngine)"
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cores: [rigelengine]
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systems: [duke-nukem-2]
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verification: existence
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notes: |
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Reimplementation of the Duke Nukem II engine (Apogee, 1993). It plays the
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data files of the DOS release, shareware or registered.
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Game path. The path comes from the positional command line argument
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(src/main.cpp:222), else the working directory when it holds NUKEM2.CMP,
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else a folder browser (src/game_main.cpp:101-125). A folder is accepted only
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when NUKEM2.CMP exists in it (src/game_main.cpp:72-78, 136-142) and the
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choice is kept in the user profile (src/game_main.cpp:152-153, 235-240).
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File names are opened as written, in upper case.
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NUKEM2.CMP is an archive with a dictionary of 12-character names, offsets
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and sizes. Every game asset is read from it (src/assets/resource_loader.cpp:148,
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515-537). The only check is that each entry lies inside the file
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(src/assets/cmp_file_package.cpp:43-66). No size, CRC or hash is compared.
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Shareware or registered. The registered set is assumed when the archive
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holds LCR.MNI and O1.MNI (src/frontend/game.cpp:235-245). With the
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shareware set, episodes 2 to 4 answer with the ordering message
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(src/frontend/menu_mode.cpp:243-247) and saves of those episodes are
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refused (src/frontend/menu_mode.cpp:303-305). The shareware episode plays
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in full.
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Intro movies. NUKEM2.F1 to NUKEM2.F4 are loaded loose from the game path
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(src/assets/resource_loader.cpp:415-429) when the intro is built
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(src/ui/intro_movie.cpp:72, 80, 94, 108), and NUKEM2.F5 is the Apogee logo
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(src/ui/apogee_logo.cpp:63-67). A missing file throws and the intro or the
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logo is skipped (src/frontend/intro_demo_loop_mode.cpp:38-55, 64-77).
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On first launch the original game's saves, high scores and settings
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(NUKEM2.-NM, NUKEM2.-S1 to -S8, NUKEM2.-V1 to -V4, NUKEM2.-GT) are imported
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when present (src/assets/user_profile_import.cpp:144-203). They are user
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data, not distributed files.
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The shareware release that the project points to is
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archive.org msdos_DUKE2_shareware, DUKE2.zip (README.md:82,
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cmake/rigel_pack.cmake:14-17). It holds NUKEM2.CMP and all five movies.
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NUKEM2.EXE in that release is never opened.
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EmuELEC 4.8 builds commit f05996f9b3ad3b3ea5bb818e49e7977636746343, where
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every file cited above is identical, and passes /storage/roms/ports/rigelengine
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as the game path.
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files:
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- name: "NUKEM2.CMP"
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category: game_data
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system: duke-nukem-2
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required: true
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description: "Game data archive: levels, graphics, sounds, music and texts"
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note: "Its presence validates the game path. The shareware archive plays episode 1, the registered one all four."
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source_ref: "src/game_main.cpp:72-78, 136-142, src/assets/resource_loader.cpp:148"
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- name: "NUKEM2.F1"
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category: game_data
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system: duke-nukem-2
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required: false
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description: "Intro movie, shot at the shooting range"
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note: "The intro needs F1 to F4 together, it is skipped when one is missing"
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source_ref: "src/ui/intro_movie.cpp:80, src/frontend/intro_demo_loop_mode.cpp:38-44"
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- name: "NUKEM2.F2"
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category: game_data
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system: duke-nukem-2
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required: false
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description: "Intro movie, Neo LA opening scene"
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note: "The intro needs F1 to F4 together, it is skipped when one is missing"
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source_ref: "src/ui/intro_movie.cpp:72, src/frontend/intro_demo_loop_mode.cpp:38-44"
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- name: "NUKEM2.F3"
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category: game_data
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system: duke-nukem-2
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required: false
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description: "Intro movie, target hit"
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note: "The intro needs F1 to F4 together, it is skipped when one is missing"
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source_ref: "src/ui/intro_movie.cpp:94, src/frontend/intro_demo_loop_mode.cpp:38-44"
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- name: "NUKEM2.F4"
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category: game_data
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system: duke-nukem-2
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required: false
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description: "Intro movie, end of the shooting range scene"
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note: "The intro needs F1 to F4 together, it is skipped when one is missing"
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source_ref: "src/ui/intro_movie.cpp:108, src/frontend/intro_demo_loop_mode.cpp:38-44"
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- name: "NUKEM2.F5"
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category: game_data
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system: duke-nukem-2
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required: false
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description: "Apogee logo movie"
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note: "The logo is skipped when the file is missing"
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source_ref: "src/ui/apogee_logo.cpp:63-67, src/frontend/intro_demo_loop_mode.cpp:49-55, 64-70"
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