Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
c-sharpcsharpcsharp-coredotnetdotnet-coreemulatorgplgplv3mmommo-enginemmorpgmmorpg-serveronlinerpgrunuoserverservuoultimaultima-onlineuo
64643dbc7e
Three files tested "parity" and none of them said which parity. They were in fact three different layers, and the seams between them were the useful part, so they are now one StepCacheParityTests that names them: ProbeMatchesSlowPath StepProbe vs MovementImpl - is the bake right? CacheMatchesProbe StepCache vs StepProbe - is it stored and returned intact? CacheServesReachableWalkStates StepCache vs MovementImpl - end to end, over the states A* visits Merging them removed a duplicated stub Mobile, duplicated region seeds, and a filename/class mismatch (StepProbeParityTests.cs declared StaticWalkabilityParityTests). SwimBake_ProducesWetCells moved with it: it lived in the cache parity file but never touched the cache - it is a probe test. The layering is load-bearing, not cosmetic. Offsetting the cache's cell index by one fails 7 of the 10 parity cases, and the 3 that stay green are exactly the ones that don't touch the cache - so a failure localizes the fault instead of just reporting one. Reflection: tests reached into StepCache._chunks via GetField in 9 places to inspect or inject chunk state, each rebuilding the key and the cell-index arithmetic by hand. StepCache now exposes GetResidentChunk and ResidentIndexInSync alongside the existing internal test hooks (LazyReaderHasChunk, CurrentFindGeneration), and the shared arithmetic moved to PathingTestSupport. All 9 reflection blocks are gone. StepCacheLifecycleTests is regrouped by what it actually covers - promotion gate, fallthrough routes, strata, swim layer, eviction - with the Tier4* names dropped (same internal jargon already removed from the comments) and the repeated offsets/strata byte-array construction replaced by builders. Dropped Singleton_IsAvailable: it asserted that an inline-initialized static property was not null, which it cannot be. Test count 123 -> 122, entirely from that one removal; every parity case and every behavioral assertion is preserved. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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| LICENSE | ||
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| README.md | ||
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ModernUO 
Ultima Online Server Emulator for the modern era!
Requirements
Supported Operating Systems
Required Frameworks
All Operating Systems
Windows
Development
Supported IDEs
Getting Started
- Install prerequisite requirements
- Clone this repository (or download the latest):
git clone https://github.com/modernuo/ModernUO.git
- Open
ModernUO.slnto start developing
Building/Publishing
Interactive Mode (Recommended for new users)
Run ./publish.cmd (Windows) or ./publish.sh (Linux/macOS) with no arguments to launch the guided build tool. It will:
- Check prerequisites (.NET SDK, native libraries)
- Walk you through configuration and platform selection
- Build and publish the server to the
Distributiondirectory - Show deployment instructions for cross-compiled builds
Command Line
./publish.cmd [release|debug] [os] [arch]
os- Supported operating systemsarchx64- Intel/AMD 64-bitarm64- ARM 64-bit
Linux Prerequisites
Fedora, CentOS, RHEL, etc
dnf upgrade --refresh -y
# CentOS does not come with EPEL enabled
dnf install -y epel-release epel-next-release
dnf install -y findutils libicu libdeflate-devel zstd libargon2-devel liburing-devel
Ubuntu, Debian, etc
apt-get update -y
apt-get install -y libicu-dev libdeflate-dev zstd libargon2-dev liburing-dev
OSX Requirements
brew install icu4c libdeflate zstd argon2
Running the Server
- Follow the publish instructions
- The
Distributiondirectory is portable — copy it to your production server for deployment - Run
ModernUO.exeordotnet ModernUO.dllfrom theDistributiondirectory - On first run, the server will prompt you to configure game data file locations
Troubleshooting / FAQ
- See FAQ
Want to sponsor?
Thank you for supporting us! You can find out how by visiting the sponsors page.
Collaborators
Thanks
- RunUO Team & Community
- Voxpire, the ServUO Team & Community
- Karasho, Jaedan and the ClassicUO Community
Development Tools & Plugins provided with ♥ by
Code Signing Policy
Free code signing provided by SignPath.io, certificate by SignPath Foundation.
This program will not transfer any information to other networked systems unless specifically requested by the user or the person installing or operating it
Teams & Roles
Approvers & Committers: Development Team