BobGneu/Flathead

Flathead = UE4 + Javascript

Basic Installation & Configuration

1. Clone the project into your Plugins directory.

2. Download ThirdParty.zip and unzip it into the Plugins directory.

3. Add this Flathead to the PrivateDependencyModuleNames list.

   PrivateDependencyModuleNames.Add("Flathead");

4. Overwrite the base module, hooking into the StartupModule method.

   class FMyJSSampleModule : public FDefaultGameModuleImpl
   {
   	virtual void StartupModule() OVERRIDE;
   };
   
   void FMyJSSampleModule::StartupModule()
   {
   	if (IFlathead::IsAvailable())
   	{
   		IFlathead::Get().LoadGameScript("GameInit.js");
   	}
   }

5. Add your script file to the /Scripts directory of your project.

   game.log("Game Initialization");
   
   Object.addEventListener("game.tick", function (ev) {
   	game.log("tick.", ev.deltaTime);
   });

6. Expose your types to JS

   void AFH_FlyingPawn::Expose()
   {
   	if (!IFlathead::IsAvailable())
   		return;
   
   	IFlathead &ref = IFlathead::Get();
   	HandleScope handle_scope(ref.GetIsolate());
   
   	Local<Context> context = ref.GetGlobalContext();
   	Context::Scope ContextScope(context);
   
   	Local<Object> Bob = ref.Expose(this, TEXT("Bob"));
   
   	Bob->Set(String::NewFromUtf8(ref.GetIsolate(), "value", String::kInternalizedString), Number::New(ref.GetIsolate(), 42));
   
   	Local<String> key = String::NewFromUtf8(ref.GetIsolate(), "test", String::kInternalizedString);
   
   	ref.LoadGameScript("BobTest.js");
    }

7. Enjoy!

Please consult the Wiki for further documentation. If you run into any issues, please file a ticket in the GH Tracker.

Sample Projects & Code

• Flying Game: https://github.com/BobGneu/UE4FlyingGame

Known Issues

Exposing Functions is currently not working, but may be addressed with updating to a later build of V8. You can contribute to the discussion on this topic here: https://groups.google.com/forum/#!topic/v8-users/cYkuljdJEJ8

Contact

If you have any Questions, Comments, Bug reports or feature requests for this plugin, or you wish to contact me you can and should email me - bob@gneu.org

Alternatively, you can join me in #gneu on irc.freenode.net or irc.gamesurge.net