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Oxide/docs/projects.md
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Homer 48003ffea4 Editor: native folder picker for New/Open Project
Stage-10 editor-UX follow-up ("typing the path by hand is very hard to
use"). Both project dialogs gain a Browse… button that opens the native
folder picker via rfd's xdg-portal backend — pure Rust, one build works
on Wayland and X11 through xdg-desktop-portal. The dialog runs on a
helper thread reporting over an mpsc channel (polled once per frame in
Shell::build), so the editor keeps rendering while the picker is up;
one pick at a time, and the typed path field remains as a fallback for
portal-less environments.

GUI piece — needs an eye-check (on both Wayland and Xorg) before
promotion to main.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-10 20:47:12 +02:00

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# Project System
`oxide_engine::project` defines what a game is, on disk: a **project**. A project
is a root directory containing a project file plus a defined folder layout. The
format lives in the engine (not the editor) because the exported runtime and the
Stage-16 packer read it too — the editor just adds the create/open/save UI.
## Layout
```
my-game/
├── project.oxide # the project file (RON)
├── scenes/ # scene files
├── assets/ # meshes, textures, audio, …
└── scripts/ # game scripts
```
The project file records the project name, the engine version it was saved with,
the enabled [modules](modules.md), and per-project settings.
## Create, open, save
```rust
use oxide_engine::project::Project;
// Scaffold a new project (creates the folders + project file).
let mut project = Project::create("/path/to/my-game", "My Game")?;
project.enable_module("render");
project.save()?;
// Reopen later — by directory or by the project file path.
let project = Project::open("/path/to/my-game")?;
assert_eq!(project.name(), "My Game");
assert!(project.is_module_enabled("render"));
# Ok::<(), oxide_engine::project::ProjectError>(())
```
Path helpers (`scenes_dir()`, `assets_dir()`, `scripts_dir()`,
`project_file_path()`) resolve locations against the root. `create` refuses to
overwrite an existing project; `open` reports `NotFound` when there is no project
file.
## Settings storage
Per-project settings are stored as **opaque per-section RON blobs** keyed by
section name, which keeps the project format independent of any particular
settings schema:
```rust
# use oxide_engine::project::Project;
# let mut project = Project::create(std::env::temp_dir().join("oxide_doc_proj"), "x").unwrap();
project.set_settings_section("editor", "(theme:\"dark\")");
assert_eq!(project.settings_section("editor"), Some("(theme:\"dark\")"));
```
The typed settings framework serializes its sections to and from these strings,
so a section round-trips through the project file without this module knowing the
section's shape.
## The editor's New / Open dialogs
The editor's **File ▸ New Project… / Open Project…** dialogs wrap
`Project::create`/`Project::open`. Each path field has a **Browse…** button
opening the **native folder picker** (`rfd` with the `xdg-portal` backend — one
pure-Rust build serves both Wayland and X11 through `xdg-desktop-portal`). The
dialog runs on a helper thread so the editor keeps rendering while it is up;
the picked folder lands back in the field, which stays hand-editable — if no
portal service is running the picker simply doesn't appear and the typed path
still works.
## Recent projects
`RecentProjects` is a small most-recently-used list, persisted globally as an
editor preference (not inside any project). It de-duplicates and caps:
```rust
use oxide_engine::project::RecentProjects;
let mut recent = RecentProjects::new(10);
recent.record("/path/to/my-game");
// recent.save("~/.config/oxide/recent.ron")?; / RecentProjects::load(...)
assert_eq!(recent.entries().len(), 1);
```
## Who consumes this
| Consumer | Stage | Use |
|----------|-------|-----|
| Editor | 6 | New/Open/Save Project UI, recent list, Project panel/asset browser |
| File watcher | 6 | watches `scenes/`, `assets/`, `scripts/` for live reload |
| Settings framework | 6 | persists per-project sections into the project file |
| Exported runtime / packer | 16 | reads the layout + enabled modules to bundle the game |
[`Project`]: ../engine/src/project.rs
[`RecentProjects`]: ../engine/src/project.rs