mirror of
https://github.com/doukutsu-rs/doukutsu-rs
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133 lines
4.7 KiB
Markdown
133 lines
4.7 KiB
Markdown
# doukutsu-rs
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[Download latest Nightly builds](https://github.com/doukutsu-rs/doukutsu-rs/actions) (Requires being logged in to GitHub)
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A re-implementation of Cave Story (Doukutsu Monogatari) engine written in [Rust](https://www.rust-lang.org/).
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**The project is still incomplete and not fully playable yet.**
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[Join the Discord server](https://discord.gg/fbRsNNB)
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#### Data files
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This repository does not contain any copyrighted files.
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For better user experience, pre-built binaries are distributed with slightly modified freeware game files.
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*doukutsu-rs* should work fine with [CSE2-Enhanced](https://github.com/Clownacy/CSE2) or [NXEngine(-evo)](https://github.com/nxengine/nxengine-evo) freeware data files and [Cave Story+](https://www.nicalis.com/games/cavestory+) data files.
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Vanilla Cave Story does not work yet because some important data files have been embedded inside the executable. and we don't have a loader/extractor implemented yet.
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##### Where to get them?
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**Freeware**
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- https://github.com/doukutsu-rs/game-data - Freeware game data distributed with CI builds, based on those two below.
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- https://github.com/Clownacy/CSE2/archive/enhanced.zip - copy `game_english/data` from archive to the runtime directory (place you run the executable from, usually project root)
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- https://github.com/nxengine/nxengine-evo/releases/download/v2.6.4/NXEngine-v2.6.4-Win32.zip - copy `NXEngine-evo-2.6.4-xxx/data` from the archive to runtime directory
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**Cave Story+**
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- PC release - (Tested only with Steam version, both Windows and Linux builds) Copy `data` folder from installation directory ([guide for Steam](https://steamcommunity.com/sharedfiles/filedetails/?id=760447682)) to the runtime directory.
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- Switch release - **Not supported or actively tested.** Some of release-specific opcodes have been implemented (no code
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decompilation was involved, just pure data file analysis), so you should be able to play it without any major issues.
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Because methods used to extract game data from cartridge vary, you have to find that out on your own.
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#### Gameplay support roadmap
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- [x] Checkmarked things = fully implemented
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- [ ] Unmarked things = partially or not implemented yet.
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- [x] Rendering
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- [x] Backdrops
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- [x] Tilemap
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- [x] Player and it's animations
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- [x] Carets
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- [x] Bullets
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- [x] NPCs
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- [x] Text
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- [x] HUD
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- [ ] Text scripts (TSC)
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- [x] Initial implementation
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- [x] Full implementation of gameplay opcodes
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- [x] Shift-JIS encoding support
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- [ ] Credits opcodes
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- [ ] Audio
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- [x] Organya BGM playback
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- [x] Text script bindings
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- [ ] CS+ style .ogg BGM playback
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- [x] PixTone SFX
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- [ ] NPCs/entities
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- [x] Initial implementation
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- [ ] Miscellaneous entities (~30% done)
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- [ ] Bosses (~20% done)
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- [x] First Cave
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- [x] Mimiga Village
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- [x] Egg Corridor
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- [x] Grasstown
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- [ ] Sand Zone (~10% done)
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- [ ] Labirynth (~10% done)
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- [ ] Outer Wall
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- [ ] Plantation
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- [ ] Last Cave
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- [ ] Balcony
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- [ ] Hell
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- [ ] Cave Story+ specific NPCs
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- [x] Dashing Gaudis (361)
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- [ ] ??? (362)
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- [ ] Weapons
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- [x] Leveling / XP system
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- [x] Initial implementation
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- [x] Snake
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- [x] Polar Star
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- [x] Fireball
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- [ ] Machine Gun
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- [ ] Missile Launcher
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- [ ] Bubbler
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- [ ] Blade
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- [ ] Super Missile Launcher
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- [ ] Nemesis
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- [ ] Spur
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- [x] Saving and loading game state
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- [ ] Support for different game editions
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- [ ] Vanilla
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- [x] Modified vanilla
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- [ ] Cave Story+
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- [x] Base mod
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- [ ] Mod loading
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- [ ] Curly Story
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- [ ] Wind Fortress (~40%)
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- [ ] Boss Run
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- [x] Seasonal graphics
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- [ ] Co-op gameplay (~70%)
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- [ ] Remastered soundtrack
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*(tbd)*
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#### Mandatory screenshots
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**Freeware data files:**
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**Cave Story+ data files:**
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#### Legal note
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This project includes reverse engineered implementations of NPC and game physics algorithms, derived from freeware Cave Story and PC Cave Story+ executables.
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Since the game's (non-existent, even for CS+) EULA does not prohibit reverse engineering,
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[according to Secion 103(f)](https://www.law.cornell.edu/uscode/text/17/1201) we could legally revese engineer those parts
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to achieve interoperability.
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#### Credits
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- Studio Pixel/Nicalis for Cave Story
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- [Cave Story Tribute Site](https://cavestory.org) - has lots of useful resources related to the game.
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- [CSE2](https://github.com/Clownacy/CSE2) - widescreen fixes, more readable reference for game logic, mutual help in various things.
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- [LunarLambda for organism](https://gitdab.com/LunarLambda/organism) - which is being used by us as `.org` playback engine.
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