Dupe Interest Sets

Dupe Interest Sets adds configurable interest-set categories to the duplicant reroll dropdown in Oxygen Not Included.

Each custom category represents a fixed set of 1 to 3 duplicant interests. Vanilla categories are left untouched and continue to work normally.

The mod ships with no extra categories enabled by default. Add your own sets from the in-game options screen or by editing Config.json.

Features

• Adds custom interest sets to the duplicant reroll dropdown.
• Supports 1, 2, or 3 interests per custom category.
• Keeps vanilla categories unchanged.
• Keeps traits, stress reactions, attributes, and other random generation behavior vanilla.
• Provides an in-game configuration screen using PLib.
• Lets you reorder custom categories in the editor; the dropdown follows that order after restart.
• Includes English and Brazilian Portuguese UI translations.
• Saves settings to Config.json.

In-Game Configuration

1. Open the Oxygen Not Included Mods menu.
2. Enable Dupe Interest Sets.
3. Restart the game if prompted.
4. Return to the Mods menu and open the mod options.
5. Click Edit Categories.
6. Add, remove, edit, or reorder custom categories.
7. Save and restart the game to rebuild the duplicant dropdown.

Restarting is required because the game registers duplicant skill groups during database initialization.

Manual Configuration

You can also edit Config.json directly in the mod folder.

Default config:

{
  "enabled": true,
  "customCategories": []
}

Example:

{
  "enabled": true,
  "customCategories": [
    {
      "id": "BuilderResearcher",
      "displayName": "Builder Researcher",
      "interests": ["Building", "Research"]
    },
    {
      "id": "FarmCookRanch",
      "displayName": "Farm Cook Ranch",
      "interests": ["Farming", "Cooking", "Ranching"]
    }
  ]
}

Rules:

• enabled: false disables the mod behavior.
• id must be unique and contain only letters and numbers.
• displayName is shown in the dropdown.
• interests must contain 1 to 3 valid interest IDs.
• Invalid categories are skipped and logged.

Valid Interest IDs

Mining       -> Digging
Building     -> Building
Farming      -> Farming
Ranching     -> Ranching
Cooking      -> Cooking
Art          -> Decorating
Research     -> Researching
Rocketry     -> Rocketry
Suits        -> Suit Wearing
Hauling      -> Supplying
Technicals   -> Operating
MedicalAid   -> Doctoring
Basekeeping  -> Tidying

Rocketry only appears in the in-game editor and validates in Config.json when the game registers it as an available interest, such as when the related space content is active.

Translation

Built-in translation files live in translations/:

translations/en.json
translations/pt-BR.json

English is the fallback language. Dupe Interest Sets registers every UI string under this prefix:

STRINGS.UI.DUPEINTERESTSETS.

External translation mods can override UI text by registering the same keys with Strings.Add(...) after this mod loads.

Example:

Strings.Add(
    "STRINGS.UI.DUPEINTERESTSETS.DIALOG.SAVE",
    "Translated Save Text");

Custom category names are written by the player and are not translated. Interest names come from Oxygen Not Included's own SkillGroup names, so they follow the active game language.

Logging

Logs use this prefix:

[DupeInterestSets]

Oxygen Not Included writes logs to:

%USERPROFILE%\AppData\LocalLow\Klei\Oxygen Not Included\Player.log

Build Notes

The current Oxygen Not Included assemblies target .NET Framework 4.8, so the project builds as net48.

On Windows with the default Steam install path:

dotnet build .\src\InterestPicker.csproj -c Release

On Linux or macOS, point OniManagedDir to the game's OxygenNotIncluded_Data/Managed folder:

dotnet build ./src/InterestPicker.csproj -c Release -p:OniManagedDir="/path/to/OxygenNotIncluded/OxygenNotIncluded_Data/Managed"

Local install command:

.\scripts\install-local.ps1

The local install script is Windows-oriented and preserves an existing Config.json. It only creates the default config when the target mod folder does not already have one.

Release package command:

.\scripts\package-release.ps1

The package script builds the mod and creates dist/DupeInterestSets-vX.Y.Z.zip with only the files needed for Steam Workshop or manual install.

ONI Update Watchdog

The repository includes a GitHub Actions watchdog that checks the Oxygen Not Included public Steam build once per day.

Files:

.github/oni-watch.json
.github/workflows/oni-update-watchdog.yml
scripts/check-oni-update.ps1

The script compares the current public Steam build ID with the baseline in .github/oni-watch.json. If the build changes, the workflow opens a compatibility-check issue with a manual checklist.

Run it locally:

pwsh ./scripts/check-oni-update.ps1 -OutputPath oni-watch-result.json

The watchdog does not prove compatibility automatically. It only detects that ONI changed and creates a reminder to rebuild and verify the Harmony patches.

Known Limitations

• Changes require a game restart to affect the duplicant dropdown.
• The mod focuses only on interest-set categories.
• Bionic duplicants use special vanilla generation logic; the mod is primarily intended for regular duplicants.