Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
c-sharpcsharpcsharp-coredotnetdotnet-coreemulatorgplgplv3mmommo-enginemmorpgmmorpg-serveronlinerpgrunuoserverservuoultimaultima-onlineuo
4fe5dd0eec
## Summary Follow-up to #2621, which added a per-entry `Disabled` flag to the spawner gump as a checkbox. The checkbox was placed between the Expand and Delete buttons at x=22, overlapping Expand (5–35), and Delete moved to 46, overlapping the creature text box at 71. - **Lock column on the far left.** Each entry row gets a toggle at x 5–25: padlock `0x82C` when the entry is disabled (press to unlock), green orb `0x2C88/0x2C89` when enabled (press to lock). The client's gump art has only closed padlocks (`0x82C`, `0x0020`), so the orb marks the unlocked state; XmlSpawner uses the same padlock paired with a blue gem. - **Expand and Delete are adjacent again** (28 / 61, the original 33px pitch), and everything to the right shifts 23px: creature/#/Max/Prb boxes, headers, the totals row, page arrows, Save/Cancel. The gump is now 369 wide (was 346). Params/Props boxes widen to match. - **Locked entries are read-only.** Name, max, probability, and Params/Props (when expanded) render as `AddLabelCropped` on a grey tile (`0x23F4`) instead of `AddTextEntry`. There is no read-only text entry in the UO gump protocol, so omitting the entry is the only way to make the field truly non-editable. `CreateArray` already `continue`s on a null type entry, so Save leaves locked entries untouched. - **Totals row aligned under its columns.** Spawned under `#`, a new total max under `Max`, total weight under `Prb`. Max and weight exclude locked entries, matching `BaseSpawner`, which skips `Disabled` entries when rolling. ## Test plan - [x] `[props` a spawner with several entries: lock column is on the left, Expand/Delete sit side by side, no overlaps. - [x] Lock an entry: padlock shows, fields go grey and cannot be typed into; unlock: orb shows, fields are editable again. - [x] Edit an unlocked entry, lock another, Save: unlocked edits persist, locked entry keeps its values. - [x] Expand a locked entry: Params/Props are grey and read-only. - [x] Totals sit under `#` / `Max` / `Prb`; locking an entry drops it from the max and weight totals. |
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| .github | ||
| branding | ||
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| Distribution/Data | ||
| Projects | ||
| tools | ||
| .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 | ||
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| version.json | ||
ModernUO 
Ultima Online Server Emulator for the modern era!
Requirements
Supported Operating Systems
Required Frameworks
All Operating Systems
Windows
Hardware
| Use | vCPU | RAM | Storage |
|---|---|---|---|
| Development / test | 2 dedicated | 2 GB | SSD |
| Small live shard (< 50 concurrent) | 4 dedicated | 4 GB | NVMe |
| Medium (50–200) | 4–8 | 8 GB | NVMe |
| Large (200+) | 8+, high clock | 16 GB+ | NVMe |
See dev-docs/server-requirements.md for more information.
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, AlmaLinux, Rocky, etc
dnf upgrade --refresh -y
# RHEL-family distributions (CentOS Stream, AlmaLinux, Rocky, RHEL) need CRB and EPEL enabled.
# Fedora skips this block.
dnf install -y dnf-plugins-core
dnf config-manager --set-enabled crb
dnf install -y epel-release
# Prerequisites
dnf install -y findutils libicu libdeflate libargon2 tzdata
Ubuntu, Debian, etc
apt-get update -y
# The ICU runtime package carries the ABI version in its name (libicu74, libicu76, …) and has no
# stable alias, so match it by pattern rather than pinning a release-specific name.
apt-get install -y '^libicu[0-9]+$' libdeflate0 libargon2-1 tzdata
Only the runtime libraries are needed — the -dev/-devel packages are not. Run
./build-tool --check-prereqs to check the current machine and print the exact packages your
release needs.
zstd is not listed because ZstdNet bundles libzstd for every platform, and liburing is not
listed because IORingGroup issues io_uring syscalls directly.
If the shard's configured time zone is a legacy alias such as US/Eastern, Debian 12 and Ubuntu
24.04 also need tzdata-legacy. See Platform Prerequisites
for what each dependency is for and what breaks without it.
OSX Requirements
brew install icu4c libdeflate 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