Repoverse / SNAPKITTY game
Play the Windows build
The native game opens the SNAPKITTY menu. Enter or Space starts Bifrost Runner. A/D or arrows move, Space/W jumps, E talks near the Architect, F5 saves, F9 restores the disk save (including after restarting), and Escape returns to the menu. F9 on the title screen continues the saved game. I opens the about panel. R opens the repository browser; Left/Right selects a repository and Escape returns.
Build from the repository root with PowerShell:
./tools/Build-Snapkitty.ps1 -Play
After building, run python tools/package-snapkitty.py to create out/Snapkitty-Windows.zip. Extract it and double-click Play.cmd. The package includes runtime assets, original artwork, notices and checksums.
Requires CMake, MinGW GCC/G++, and network access for the first SDL2 download. The script pins SDL 2.32.10 and verifies its SHA-256. The runtime has no network dependency. Generated sprites and audio remain part of the existing Unify build.
What is shared
The title, repository browser, gameplay, physics, WASM compute, saves and artwork are shared Unify Lua/assets. The SDL backend provides a desktop window. Unreal provides a Canvas renderer, input and audio through the existing Unify backend. This is a native 2D game hosted inside Unreal, not a new browser simulation.
The existing demo remains available with --scene title. The new default is snapkitty, which opens snapkitty_level. The player uses the original kitten cutout; motion uses the existing run/jump state machine and procedural squash, not invented sprite-sheet frames. The Architect is an interactive NPC near the start. Event pickups, obstacles, moving platforms, the finish trigger and save/restore use the existing platformer systems.
Repoverse data bridge
The C# core remains the authority for world generation. Export a snapshot and manifest using the existing CLI, then generate the read-only repository scene:
dotnet run --project src/Repoverse.Cli -- ingest-local . --owner SNAPKITTYWEST --out out/snapshot.json
dotnet run --project src/Repoverse.Cli -- generate --snapshot out/snapshot.json --out out/manifest.json
python tools/export-unify-world.py out/manifest.json
The exporter accepts schema 1 and encodes text as Lua string bytes, never as executable source. It does not modify the manifest or run repository code. The checked-in menu data is a snapshot of this repository, not live GitHub data. The browser shows category, district, activity, construction, rooms and seed. It is not yet the streamed 3D voxel district described in HANDOFF.md.
Unreal project
See unreal/README.md. The project enables the UnifyUnreal plugin, assigns the Unify GameMode, creates a host automatically, and stages ordinary files as NonUFS assets because the engine opens them through its file loader.
Artwork and provenance
Originals and the upstream AGPL license are under assets/snapkitty. Four QOI runtime copies were converted losslessly, with pixel equality checked. The source and runtime SHA-256 hashes are in runtime-manifest.json. No original was recolored, resized or overwritten; scene tint is applied at runtime for readability. Both original JPGs and transparent PNGs are retained. The upstream source commit is recorded in source-manifest.json. This does not replace the licensing terms of unrelated Repoverse code.
Regenerate texture files with python tools/import-snapkitty.py (Pillow required). The checked-in QOI files make Pillow unnecessary for ordinary game builds.
Validation
CTest runs the engine suite, the original demo playthrough and the SNAPKITTY playthrough. The latter exercises the actual game rather than a mock scene. An additional engine test covers the about panel, repository scene, play transition, original textures and Architect interaction. Screenshots are written under unify/build-game/snapkitty-evidence.
The Unreal Editor is not installed in the inspected locations on this machine. Its C++ integration therefore still needs compilation and a PIE check with the user's engine version. SDL/headless results do not establish Unreal compilation.
3D district integration
See REPOVERSE-3D.md for the new C# sidecar, Unreal client, launcher and the remaining Unreal compilation/playtest boundary.