Retargets RioJoy.Core/Overlay/Tray + tests from net8.0-windows to net48 so the app can be tested as a framework-dependent build (relies on the in-box .NET Framework 4.8 on Windows 10/11). Builds clean; all 241 tests pass. Polyfills (no behavior change): - PolySharp source generator for init/records/Index/Range/required members. - System.Memory, System.Text.Json, Microsoft.Bcl.HashCode, System.Threading.Channels (tests) NuGet packages. - Compat/Net48Polyfills.cs: GetValueOrDefault, KeyValuePair.Deconstruct, Math.Clamp; tests/TestPolyfills.cs: Task.WaitAsync. Source adjustments for APIs absent on net48: - ArgumentNullException/ArgumentException.ThrowIf* inlined to manual guards. - Convert.ToHexString, Encoding.Latin1, Environment.ProcessPath, ApplicationConfiguration.Initialize, Enum.GetNames<T>/GetValues<T>, string.StartsWith(char), string.Split(char, opts), TextBox.PlaceholderText, PeriodicTimer, Memory-based Stream Read/WriteAsync, array range-slicing. - Dropped [SupportedOSPlatform] hints (net48 is single-platform). deploy/build-package.ps1: publish framework-dependent (no self-contained). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
RIOJoy
Modern Windows 10/11 interface between the cockpit RIO (Remote Input/Output) board and Windows, as a virtual joystick / keyboard / mouse — the successor to the legacy vJoy-based app, with no vJoy dependency.
The RIO has 72 digital inputs and outputs (lighted buttons) and 5 analog axes (joystick X/Y, throttle, left pedal, right pedal), connected over RS-232 at 9600 8N1. RIOJoy exposes these to games that don't natively know about the cockpit hardware, with per-game profiles. (The native games — Firestorm, Red Planet — talk to the RIO directly and do not use this app.)
Repository layout
| Path | Contents |
|---|---|
src/RioJoy.Core |
Protocol, profile model, input mapper, HID feeder (class library) |
src/RioJoy.Tray |
Background tray application |
tests/RioJoy.Core.Tests |
xUnit tests for the protocol core |
driver/ |
RioGamepad virtual HID driver (KMDF + VHF) — replaces vJoy |
tools/RioJoySmokeTest |
On-cabinet end-to-end check of the feeder → driver path |
tools/XcfRegionExtract |
Extracts cockpit label regions from riojoy.xcf → regions.json |
docs/PLAN.md |
Full modernization plan (7 phases) |
docs/PROTOCOL.md |
RIO wire format + iRIO input-map reference |
docs/reference/ |
Cockpit overlay art & the legacy labeling pipeline |
legacy/ |
Original C++/vJoy implementation, kept as reference |
Building
Requires the .NET 8 SDK and Windows. The driver builds separately with the
WDK (see driver/README.md).
dotnet build RioJoy.sln -c Release
dotnet test RioJoy.sln
Status
Phases 1–5 are implemented and tested (136 unit tests). The RioGamepad virtual
HID driver is built (KMDF + VHF), test-signed, installed, and verified: it
enumerates in joy.cpl, and the C# HID feeder (DeviceIoControl →
RioGamepad.sys) drives its axes, buttons, and hat end-to-end (see
tools/RioJoySmokeTest). The C# side covers the serial
- RIO protocol core, input mapping + output routing, axis calibration + plasma
display, the tray app + profiles (JSON config,
RIO.iniimporter, three-state auto-switch), and the HID report packer that matches the driver's wire format. Remaining work is on-cabinet (real RIO serial/axis/plasma/auto-switch verification) plus packaging (Phase 6) and the profile editor + overlay generator (Phase 7). Seedocs/PLAN.mdfor the full roadmap.