Question 1

How do I set up Unreal.hx in an existing UE4 project?

Accepted Answer

Clone the plugin into the Plugins/UnrealHx directory, change your Build.cs to extend HaxeModuleRules, install Haxe with required haxelibs like hxcpp, and after the first build, add Haxe classes to the Haxe/Static or Haxe/Scripts folders. Refer to the Setup section in the README for detailed steps.

Question 2

Is Unreal.hx compatible with Unreal Engine 5?

Accepted Answer

No, Unreal.hx is designed for Unreal Engine 4, specifically version 4.19, and there's no official support for UE5. This means you might miss out on newer engine features and improvements.

Question 3

How does Unreal.hx performance compare to writing C++ directly?

Accepted Answer

Performance is nearly identical since Haxe compiles directly to C++, but the garbage collection feature might introduce slight overhead in memory-intensive scenarios, though it trades off for easier memory management.

Question 4

Can I use Blueprints with Unreal.hx code?

Accepted Answer

Yes, Unreal.hx fully supports UCLASS creation and subclassing, allowing Haxe classes to be exposed to Blueprints for visual scripting, as shown in the examples with @:uclass and @:ufunction decorators.

Question 5

What are the main drawbacks of using Unreal.hx over pure C++?

Accepted Answer

The main drawbacks include the learning curve for Haxe if unfamiliar, additional setup steps, and being locked to older Unreal Engine versions, which might hinder long-term project scalability.

Question 6

How to speed up compilation with Unreal.hx during development?

Accepted Answer

Use the cppia virtual machine by running 'haxe gen-build-script.hxml' in the Haxe directory after the first build, enabling fast script compilation without full C++ rebuilds, as mentioned in the wiki for faster iteration.

unreal.hx

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