Multitude 0.1.0 — edit many prefabs, each in its own window

Multitude 0.1.0 — first release

Edit several prefab assets at the same time, each one in its own window, without touching the scene you
have open and without going through Unity's prefab stage.

This is the first published version, extracted from the game project it was built in.

Install

Pick one route. The .unitypackage puts the sources inside your project; the package routes install
it under Packages/. Installing both compiles the same types twice.

Attached file	How to install
Multitude-0.1.0.unitypackage	drag it into the Unity Project window, or double click it with the project open. Lands in Assets/Multitude/
com.gabs.multitude-0.1.0.tgz	Window > Package Manager > + > Add package from tarball...

Or straight from git:

https://github.com/gabriel96x1/Multitude.git

in Window > Package Manager > + > Add package from git URL.... Pin a version with #v0.1.0.

Highlights

• One window per prefab. Hierarchy, isolated preview and component inspector, all independent
  between windows: they can be docked or floated, and the layout of each one is remembered.
• Isolated sessions. A prefab is loaded into its own preview scene and stays clean until you press
  Apply; Revert reloads it from disk. Your scene, scene view, game view and prefab stage never
  see anything from Multitude.
• No silent overwrites. If the prefab changed on disk while the window was open, Apply compares the
  file against the snapshot taken when the window opened and offers Overwrite, Keep editing or Reload
  from disk.
• Dirty close handling. Apply and close, Cancel (the window comes back with the session intact) or
  Discard and close.
• Rotating preview. Left drag orbits, right drag or Alt+left pans, the wheel zooms, F frames.
  Double click an object in the hierarchy to frame it.
• VFX in edit mode. Particle systems play with Play/Pause, Restart, Loop and a speed slider
  (0.1x–2x), advanced by hand, so nothing depends on entering play mode.
• Resizable panes. Draggable separators for the hierarchy width and the inspector height, remembered
  per window, double click to reset.

Requirements

Unity	6000.6 (Unity 6.6) or newer
Render pipeline	tested with URP 17.6; nothing pipeline specific in the code
Platform	Editor only, no runtime assembly

What is inside the .unitypackage

Editor/, package.json, README.md, CHANGELOG.md, LICENSE and licenses/. It does not
include the EditMode tests (install through the tarball or a git URL if you want to run them) nor
Documentation~/, because Unity ignores folders ending in ~ and they can never travel inside a
.unitypackage.

Known limits

• Ordinary prefabs and prefab variants. Model prefabs and missing assets are rejected with a message.
• Prefabs only: scenes and ScriptableObjects are out of scope.
• Custom inspectors that assume the prefab stage or the global selection may draw incompletely; the
  window reports it instead of breaking.
• Unsaved edits do not survive a script recompile or a domain reload; the window reloads the prefab from
  disk.
• The preview updates ~0.35 s after an edit, and while a session has unapplied changes the window
  repaints a few times per second to keep up.

License

Dual licensed: LGPL-3.0 or AGPL-3.0, your choice per copy or distribution. Full texts are in
licenses/, the notice in LICENSE. LGPL-3.0 lets you ship Multitude inside a closed product as long
as the library itself — and any modification you make to it — stays under the LGPL and the user can
replace it. AGPL-3.0 is strong copyleft and also covers offering the tool as a service. Neither is
permissive in the MIT sense: modifications to the library stay open.

Feedback and bug reports: https://github.com/gabriel96x1/Multitude/issues