Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
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### Summary
- Adds a new grid layout system for DynamicGump with zero heap allocations
- Migrates SpawnerControllerGump from legacy GumpGrid to DynamicGump
- Migrates CommandListGump from BaseGridGump to DynamicGump
- Removes legacy GumpGrid (no longer needed)
### New Grid Layout Components
| Component | Purpose |
|-----------|---------|
| `GridCell` | Value type for cell bounds (x, y, width, height) |
| `GridSizeSpec` | Parses CSS-like sizing specs ("10*", "*", "100") |
| `GridCalculator` | Computes track positions using stackalloc |
| `ListViewLayout` | Pagination + column layout for list views |
| `GridBuilderExtensions` | Extension methods accepting `GridCell` |
| `GridEntryStyle` | Styling properties for BaseGridGump migration |
| `GridEntryExtensions` | Entry methods matching BaseGridGump patterns |
### Memory Impact
| Component | Legacy | New |
|-----------|--------|-----|
| Grid storage | ~200 bytes heap | 0 bytes (stackalloc) |
| Column/Row lists | ~400 bytes heap | ~128 bytes stack |
| ListView | ~300 bytes heap | ~64 bytes stack |
| **Total per render** | **~900 bytes heap** | **0 bytes heap** |
### Test plan
- [x] All 21 gump tests pass
- [x] Build succeeds with no warnings
- [ ] In-game verification of SpawnerControllerGump
- [ ] In-game verification of CommandListGump (HelpInfo command)
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|---|---|---|
| .config | ||
| .github | ||
| Distribution/Data | ||
| docs | ||
| Projects | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| azure-pipelines.yml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| Directory.Build.props | ||
| FAQ.md | ||
| global.json | ||
| LICENSE | ||
| mkdocs.yml | ||
| ModernUO.sln | ||
| publish.cmd | ||
| 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
- Run
./publish.cmd [release|debug (default: release)] [os] [arch (default: x64)]os- Supported operating systemsarchx64- Intel/AMD 64-bitarm64- ARM 64-bit (Windows not supported)
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
Ubuntu, Debian, etc
apt-get update -y
apt-get install -y libicu-dev libdeflate-dev zstd libargon2-dev
OSX Requirements
brew install icu4c libdeflate zstd argon2
Running the Server
- Follow the publish instructions
- Run
ModernUO.exeordotnet ModernUO.dllfrom theDistributiondirectory
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
