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Hi3Helper.Plugin.Core

Hi3Helper.Plugin.Core is the official plugin framework for Collapse Launcher. It provides a set of COM-based interfaces, abstract base classes, and utility helpers that let you build a game plugin as a native Windows DLL — no launcher source code changes required.

Highlights

  • Full NativeAOT support — designed to be compiled with .NET NativeAOT; reflection-free when targeting MANUALCOM/USELIGHTWEIGHTJSONPARSER configurations
  • COM interop via System.Runtime.InteropServices.Marshalling — no custom COM registration; the launcher discovers everything through a single GetApiExport entry point
  • Batteries-included utilities — pre-configured HttpClient builder with automatic proxy and DNS resolver integration, retry-able download streams, speed limiting, and unmanaged memory helpers
  • Versioned extension API — optional feature sets (v0.1-update1 through v0.1-update5) for game launch, Discord Rich Presence, resizable-window hook, download throttling, and per-file install progress are all opt-in

Getting started
Introduction Architecture overview, key concepts, and API standard versioning
Getting Started Create and publish a minimal working plugin in 5 steps
Creating a Plugin Full guide — every interface, async patterns, self-update, and NativeAOT publishing
Utilities PluginHttpClientBuilder, retry-able downloads, speed limiting, and unmanaged memory
Advanced Topics DNS resolver callbacks, proxy settings, Discord Rich Presence, multi-region plugins
API Reference Auto-generated reference for every public type

Plugin examples