Scripting Language extensions via plugins

[BenFreidlin]

@jCoder;99487

I’ve updated the earlier post below. The script plugin is in 4.3.0 Release source code, in the Engine/Plugins directory. I don’t think it’s been compiled into the 4.3.0 binary release. You have to compile it yourself.

0. If you haven’t done so, you need to download the 4.3 0 Release source code from https://github.com/EpicGames/UnrealEngine/releases/tag/4.3.0-release

1. Got to Lua: download and download the latest source (version 5.2.3)

2. Remove it from the archive (use 7zip or similar archive program) and put it in \Engine\Plugins\Script\ScriptPlugin\Source\ScriptPlugin\ in a folder called lua-5.2.3 If you do this right, in you should have a path at \Engine\Plugins\Script\ScriptPlugin\Source\ScriptPlugin\lua-5.2.3\src that contains the .c and .h source files for lua.

3. Run the GenerateProject.bat script that’s in the root folder of your engine source.

4. Rebuild the engine.

5. You should now have an engine that has Lua built-in and you can add scripts to blueprint objects in the editor.

I’m getting this link error: Error 1 error LNK2005: main already defined in lua.c.obj UnrealEngine-4.3\Engine\Intermediate\ProjectFiles\luac.c.obj

Obviously there’s a main already defined in the editor target. Shouldn’t the main in lua be commented out since we aren’t using it? Is there any patch needed here?