scum_simple_rcon_ue4ss/BUILD.md

Build

UE4SS C++ mods need to be built with the same UE4SS source/ABI line as the runtime you deploy with. Build this beside a working RE-UE4SS checkout.

Folder layout

MyMods/
  CMakeLists.txt
  RE-UE4SS/
  scum_simple_rcon_ue4ss/

MyMods/CMakeLists.txt:

cmake_minimum_required(VERSION 3.22)
project(MyMods)

add_subdirectory(RE-UE4SS)
add_subdirectory(scum_simple_rcon_ue4ss)

Configure and build

Visual Studio:

cmake -B build -G "Visual Studio 17 2022"
cmake --build build --config Game__Shipping__Win64 --target scum_simple_rcon

Ninja:

cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Game__Shipping__Win64
cmake --build build --target scum_simple_rcon

Output package:

build/package/ue4ss/Mods/scum_simple_rcon/
  config.ini
  enabled.txt
  dlls/main.dll

If your UE4SS source checkout cannot initialize deps/first/Unreal, link your GitHub account to Epic Games and rerun:

git submodule update --init --recursive

Required UE4SS hooks/settings:

[Hooks]
HookEngineTick = 1
HookUObjectProcessEvent = 1

HookEngineTick is mandatory because RCON worker threads must never create UObjects or call the SCUM command executor themselves. The mod performs that work only from the game-thread drain callback.