Blacksite/docs/mission.md
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# Mission — Bevy FPS Foundation & Editor Framework
## What we are building
An **in-process Bevy editor and game foundation** for a server-authoritative multiplayer FPS. The editor is a **reusable framework**: the same `GamePlugin`, deterministic `sim`, and rendering stack run in the editor binary and in shipped game builds.
## Principles
1. **One world, one sim** — Play-in-editor runs real gameplay code, not a preview stub.
2. **WYSIWYG rendering** — the unified viewport uses the project rendering profile (target: `assets/project.ron`) for both editor and player cameras.
3. **Authoring over runtime** — Levels serialize reflectable components from `shared`; hydration builds runtime meshes, colliders, and lights.
4. **Input as intent** — Gameplay consumes `protocol` intent in `FixedUpdate`, enabling determinism, replays, and networking.
5. **Strict crate boundaries**`sim` and `protocol` stay rendering-free; native-only deps stay in `editor`.
6. **BRP-aligned tooling** — Custom egui UX plus Bevy Remote Protocol for automation and future interop with the official Bevy editor. BRP mutates **authoring** components only ([editor/brp.md](editor/brp.md), [ADR 0009](adr/0009-authoring-vs-hydrated.md)).
7. **Actor model** — Every saved level object has `ActorKind`; hydration is derived ([ADR 0010](adr/0010-actor-kind-and-inspector.md)).
## Audience
- **Level authors** — Iterate on scenes, tuning, and feel via PIE and project settings.
- **Engine extenders** — Reuse or embed `editor` patterns (viewport, history, PIE) in other Bevy projects.
- **Automation / CI** — BRP and headless validation (planned).
- **Multiplayer development** — Same editor shell exercises deterministic sim and protocol types.
## Non-goals
- Full DCC modeling (import-focused workflow).
- Shipping the editor to players (dev tool only).
## Related docs
- [Documentation index](README.md)
- [ADR 0001: Roadmap Architecture](adr/0001-roadmap-architecture.md)
- [ADR 0003: Editor Framework Mission](adr/0003-editor-framework-mission.md)
- [Root README — controls & checklist](../README.md)
- [Editor docs index](editor/README.md)