mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-24 04:39:06 -05:00
70 lines
3.2 KiB
YAML
70 lines
3.2 KiB
YAML
emulator: doukutsu-rs
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type: standalone + libretro
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core_classification: game_engine
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source: "https://github.com/DrGlaucous/doukutsu-rs-nm"
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upstream: "https://github.com/doukutsu-rs/doukutsu-rs"
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profiled_date: "2026-03-23"
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source_commit: "51e64c2e9615bcd476034c69b58927877fe73494"
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core_version: "1.2.0 - 0.101.0"
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display_name: "Cave Story (drs)"
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cores:
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- doukutsu_rs
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systems:
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- cavestory
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# doukutsu-rs (d-rs) is an open-source reimplementation of the Cave Story
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# (Doukutsu Monogatari) engine in Rust, ported to libretro by Dr. Glaucous.
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# It plays the original freeware Cave Story and Cave Story+ (Steam/Switch).
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#
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# The core does NOT use RetroArch's system directory for any BIOS or firmware.
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# get_system_directory() is defined in libretro.rs:1255 but never called by
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# the core (the import is commented out in core.rs:28).
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#
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# Instead, the core loads game data relative to the content path provided by
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# the frontend. The target is either a Doukutsu.exe (freeware) or a directory
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# containing a data/ subfolder (core.rs:226-233):
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#
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# content_path = "/path/to/Doukutsu.exe" (or directory for CS Switch)
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# resource_dir = parent_of(content_path) + "/data/"
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#
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# The data/ directory must contain the freeware Cave Story game assets:
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# npc.tbl, mrmap.bin, *.png, Stage/, Npc/, org/ (music), *.tsc (scripts)
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#
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# These are the original Pixel game files from Doukutsu.exe, extracted by
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# the doukutsu-rs/game-data repo (CSE2E-converted freeware data). They are
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# copyrighted by Daisuke "Pixel" Amaya but freely redistributable for
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# non-commercial use.
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#
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# Internal engine data (fonts, organya wavetables, gamecontrollerdb.txt,
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# touch overlay, lightmap) is compiled into the core binary via
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# include_bytes! in builtin_fs.rs, so nothing extra is needed in system/.
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#
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# The .info file (doukutsu_rs_libretro.info) declares:
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# supported_extensions = "exe|dll|so"
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# needs_fullpath = true
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# supports_no_game = true
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# notes = "(!) drs requires data ROM 'Cave Story (en).zip'."
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# "|(!) Load Content 'Doukutsu.exe', Also works with all other ports of CS"
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#
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# No firmware entries are declared in the .info file.
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# Valid extensions: exe, dll, so (loads the original game binary as content path)
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notes: |
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No BIOS or firmware files required in the system directory.
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The core reads game data from a data/ subfolder next to the loaded content.
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Users must provide the Cave Story freeware game files (Doukutsu.exe and its
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data/ directory) or a Cave Story+ installation as the content to load.
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All engine-internal resources (fonts, wavetables, controller mappings) are
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built into the core binary.
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exclusion_note: "game data loaded relative to content path, not from system directory"
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files:
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- name: "Doukutsu.exe"
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category: game_data
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system: cavestory
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load_from: content_dir
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required: false
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description: "Freeware Cave Story executable, loaded as content"
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note: "The engine reads the game from the data/ folder in the same directory. On first run it extracts the Organya music, bitmaps and stage table from it into data/, unless data/stage.sect already exists."
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source_ref: "source drsretroarch/src/core.rs:51-52, 226-233, source src/game/shared_game_state.rs:366-384, source src/data/vanilla.rs:37-97"
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