SULFUR Native UI Lib

A native Options screen UI library for SULFUR BepInEx mods.

This library allows other modders to register custom pages inside the game's native Options screen and build native-style UI for mod configuration, debug panels, help pages, and other in-game tools.

Features

• Native Options screen page registration
• Custom Options categories
• Foldout sections
• Native-style setting rows
• Toggle, text, number, and cycle controls
• Themed section groups
• Footer/status controls
• Localization helpers
• High-performance row updates for large config pages

For Players

This is a library mod.

It usually does nothing by itself. Install it only if another mod requires it.

For Mod Developers

Source code and full documentation are available on GitHub:

https://github.com/ryuka-dev/SULFUR-Native-UI-Lib

The GitHub documentation is the latest source of truth for API usage, examples, performance rules, themed groups, localization, and config editor patterns.

Installation

Install this mod with BepInEx.

Place the DLL under:

BepInEx/plugins/SULFURNativeUILib/

Recommended structure:

BepInEx/plugins/SULFURNativeUILib/
└─ SULFUR Native UI Lib.dll

Requirements

• SULFUR
• BepInEx 5

Source Code

The source code is available here:

https://github.com/ryuka-dev/SULFUR-Native-UI-Lib

The repository contains only original library source code and documentation. It does not include SULFUR game files, Unity assemblies, BepInEx binaries, paid assets, or decompiled game source.

Notes

This is a developer library. End users only need it when another mod lists it as a dependency.

Changelog

0.6.1

• Added custom Options page registration.
• Added basic native-style row creation helpers.
• Added localization helper support.

0.6.2

• Added SulfurSettingHandle.
• Added high-performance AddSettingToggleEx, AddSettingTextEx, AddSettingNumberEx, and AddSettingCycleEx.
• Cached sample text and native option width per page context.
• Preserved existing AddSettingToggle, AddSettingText, AddSettingNumber, and AddSettingCycle APIs.

0.6.3

• Added themed section group documentation standard.
• Added guidance for large config editor pages.
• Improved foldout hierarchy styling standard.
• Added row-handle based update pattern for high-performance UI updates.
• Documented that normal value edits should not rebuild the whole page.
• Documented ASCII foldout arrows for TMP font compatibility.
• Documented themed group border behavior and Unity Outline pitfalls.

0.7.0

• Reworked localization loading: searches multiple folders for language files, auto-detects language files by name, merges entries from several sources, and follows the current game language.

0.7.1

Fixed

• Fixed an issue where custom Native UI pages could disappear every second time the Options menu was opened.
• Custom option categories are now rebuilt more safely when the game Options screen is opened again.
• Improved custom category cleanup to avoid stale category buttons, invalid category references, or mismatched OptionsScreen state.
• Improved custom category label refreshing so labels remain valid after the game UI is rebuilt or re-enabled.

Changed

• Native UI custom categories are now recreated after OptionsScreen setup instead of relying on old injected category objects.
• This should make custom pages more stable when closing and reopening the Options menu with ESC.

0.7.2

Added

• New inline input rows for mod developers (AddInlineTextInput / AddInlineNumberInput): the label and input field sit on the same line, matching the vanilla Options layout, with optional password masking.

Fixed

• Fixed text and option font sizes shrinking a little every time a page refreshed (for example on each edit in a config editor), until the Options screen was reopened.

0.7.3

Fixed

• Fixed custom rows (badges, descriptions, section headers, text/number inputs) showing as blank boxes in non-English languages such as Chinese, Japanese, Korean, and Russian. They now use the game's current language font instead of the default Latin font.

0.8.0

Added

• New in-game popup banner for mod developers (SulfurPopupApi.ShowBanner / HideBanner): a single centered, persistent on-screen message that can appear during normal gameplay and combat, styled to match the game's UI. It is display-only — it never pauses the game, captures input, or changes the cursor, so the calling mod keeps full control of any keypress.

0.9.0

Added

• New in-game toast notifications for mod developers (SulfurToastApi.Show): short messages that slide into the top-right corner during gameplay, hold briefly, then animate away. Supports an optional title and custom duration, and multiple toasts stack with smooth slide/fade animations. Display-only and passive — it never pauses the game, captures input, or changes the cursor.

0.10.0

Added

• AddButtonRow(...) for mod developers: lays several small buttons out left-to-right in one row instead of one stacked row per button. AddSmallButton is unchanged for the single-button case.
• Live-update row handles so a page can change parts of itself while open without a full rebuild: AddTextRow returns a SulfurTextHandle, AddButtonRow returns per-button SulfurButtonHandles, and AddList returns a SulfurListHandle for refreshable sections.
• Automatic missing-glyph fallback built from installed OS fonts (a broad CJK face plus a symbol face), applied per-glyph on top of the game's active font. Fixes blank rows and missing symbols (e.g. checkmarks) in non-English languages without any bundled font assets.

Changed

• AddButtonRow now returns IReadOnlyList<SulfurButtonHandle> instead of void. It was introduced in this same release and had not shipped before, so no released API is affected.

0.10.1

Fixed

• Small-button width now actually applies. Previously the minWidth argument and the label-based auto-size had no effect on the rendered width, so every small button stayed at a fixed 120px and labels longer than ~10 characters were cut off with an ellipsis (e.g. Open-source repo → Open-sourc…). Buttons now size to their label, and an explicit minWidth widens them as intended.