Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
c-sharpcsharpcsharp-coredotnetdotnet-coreemulatorgplgplv3mmommo-enginemmorpgmmorpg-serveronlinerpgrunuoserverservuoultimaultima-onlineuo
## Summary - Creates `PropsLayoutExtensions.cs` with reusable extension methods for both legacy `Gump` and `DynamicGumpBuilder` that encapsulate the repeating PropsConfig-style layout patterns (frame, header navigation, entry rows) - Converts all 12 standardized staff gumps to use the new extensions, reducing ~570 lines of duplicated layout code - Adds Type and Serial display to PropsGump and SkillsGump headers (e.g. `PlayerMobile (0x1)`) ### Extension methods provided | Method | Pattern | |--------|---------| | `AddPropsFrame` | Background + offset region + origin coordinates | | `AddPropsHeader` | 3-column: [Prev] [Title] [Next] | | `AddPropsHeaderWithBack` | 4-column: [Back] [Title] [Prev] [Next] | | `AddPropsEntryButton` | Label + action button | | `AddPropsEntryNameValue` | Name + Value + action button | | `AddPropsEntryTextInput` | Text input + action button | | `AddPropsEntryLabel` | Label only (no button) | | `AddPropsEntryType` | Full-width type label | | `AddPropsEntryBlank` | Separator row | ### Gumps converted PropsGump, GoGump, WhoGump, SkillsGump (frame+header), EditSkillGump, SetGump, SetObjectGump, SetPoint2DGump, SetPoint3DGump, SetTimeSpanGump (frame), SetListOptionGump (frame+header), CategorizedAddGump (frame+header) ## Test plan - [x] Verify `[props` gump displays correctly with type + serial in header - [x] Verify `[skills` gump displays correctly with type + serial in header - [x] Verify `[go` navigation gump works (prev/next/back) - [x] Verify property editing gumps (Set, SetObject, SetPoint2D, SetPoint3D, SetTimeSpan, SetListOption) - [x] Verify `[categorizedadd` gump works - [x] Verify `[who` gump works with pagination |
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| .config | ||
| .github | ||
| dev-docs | ||
| Distribution/Data | ||
| Projects | ||
| .cursorrules | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| AGENTS.md | ||
| azure-pipelines.yml | ||
| CLAUDE.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| Directory.Build.props | ||
| FAQ.md | ||
| GEMINI.md | ||
| global.json | ||
| LICENSE | ||
| ModernUO.slnx | ||
| publish.cmd | ||
| publish.ps1 | ||
| publish.sh | ||
| README.md | ||
| rider-settings.zip | ||
| Rules.ruleset | ||
| SPONSORS.md | ||
| stylecop.json | ||
| THIRD-PARTY-NOTICES | ||
| version.json | ||
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