CoroFlow

CoroFlow brings C++20 coroutines to Unreal Engine gameplay programming. Instead of splitting logic across timers, delegates, latent action classes and callbacks, you write one function and co_await whatever it needs: a delay, the next tick, an asset load, an asynchronous line trace, a move to a worker thread and back, an HTTP request, a montage ending or an AI move.

Return FVoidCoroutine from a UFUNCTION marked Latent and Blueprint users get an ordinary latent node with the coroutine details hidden. The coroutine follows the lifetime of its owning object and is cleaned up if the object is destroyed while it runs. Plain C++ code can return TCoroutine<T> to get results, continuations, waiting and cancellation.

Higher-level tools build on this: WhenAny, WhenAll and Race to combine work, awaitable events and semaphores, generators with co_yield, timelines that interpolate values over time, per-tick time budgets for heavy loops, an optional Gameplay Ability System module for abilities and ability tasks written as coroutines, and a Gameplay Debugger category that lists running coroutines.

CoroFlow is part of the Alpha XP utilities collection for Unreal Engine 5.8. Every feature is exposed to C++, coroutine UFUNCTIONs appear in Blueprints as latent nodes, it ships with styled HTML documentation, and it is compiled and verified warning-free against a clean UE 5.8 project.

Key features

• Latent Blueprint nodes from C++ coroutine UFUNCTIONs, with automatic lifetime tracking
• TCoroutine<T> with results, ContinueWith, Wait and cancellation
• Game-thread awaiters: next tick, ticks, seconds (game, unpaused, real, audio), predicates
• Thread switching: game thread, UE::Tasks, named threads, thread pools, new threads
• Async loading of objects, classes, primary assets, bundles and packages
• Async line traces, sweeps and overlaps
• Timelines and per-tick time budgets
• WhenAny, WhenAll, Race, awaitable events and semaphores, generators
• Directly awaitable engine delegates, UE::Tasks tasks and futures
• HTTP, animation montage/notify and AI move/pathfinding awaiters
• Optional Gameplay Ability System module (requires the GameplayAbilities plugin only if
• Gameplay Debugger category with console variables

Events & delegates

Bind these in Blueprint (drag off the object → Bind Event) or with AddDynamic in C++.

Compatibility

One ready-made build per engine version is included in the download — copy the one that matches your project.

Technical details

What's in the download

Quick start

1. Unzip the download and pick the build that matches your engine (5.8).
2. Copy the CoroFlow folder into your project's Plugins/ folder (create it if needed).
3. Open the project, enable CoroFlow under Edit › Plugins and restart the editor.
4. Package for your target platform (Windows, macOS).

Good to know