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Plugin Builder

English | Русский | Back to UE Forge

Build Unreal Engine plugins from source using UAT (Unreal Automation Tool).

plugin_builder_en.png

Features

  • Engine auto-discovery — scans standard install paths and the registry for all UE installations, displays version and path for each
  • .uplugin validation — verifies plugin structure before build (modules, source directories, descriptor integrity)
  • Live build console — real-time UAT output with color-coded log levels
  • Advanced build flags — strict includes, unity build, PCH, platform selection, custom UAT arguments
  • Per-engine settings — save preferred build configurations for each engine version
  • Drag & drop — drop a plugin folder or .uplugin file directly onto the window

Usage

# Standalone
python -m ue_forge.plugin_builder

# Inside UE Forge host
python -m ue_forge   # → select "Builder" in sidebar
  1. Select or drop a .uplugin file
  2. Pick the target engine version from the dropdown
  3. (Optional) Configure advanced options — platforms, build flags
  4. Click Build Plugin
  5. Monitor progress in the live console

How it works

The core module (builder.py) constructs a UAT BuildPlugin command line and runs it as a subprocess. Engine discovery (engine_finder.py) checks the Windows registry (HKLM\SOFTWARE\EpicGames\Unreal Engine), standard install paths, and custom paths stored in settings.

Build output is streamed line-by-line with log-level detection (errors, warnings, successes highlighted in the console widget).