Body Change NG

Body Change NG is a GPL-3.0 native SKSE manager for BodySlide morphs, actor skin textures, and the player's RaceMenu tint layers. It combines direct in-game selection with rule-based NPC distribution in one scalable ImGui UI. The window opens with F7 by default; modifier chords are supported and the shortcut is configurable in-game.

Version 1.1.2 supports the verified Skyrim SE 1.5.97 and listed Skyrim AE 1.6.x runtimes through 1.6.1179. The project is built for Skyrim SE/AE only.

Current release: 1.1.2

This update gives the native interface a black, charcoal, and grayscale foundation while retaining the existing state and content highlight colors. It also limits clothed breast/nipple correction and NPC nipple/genital randomization to their verified CBBE 3BA target. UBE body presets, BodySkin, and player TintMask support remain available; incompatible UBE anatomy sliders are skipped.

• English changelog · 한국어 변경 이력
• Release notes and update precautions · 한국어
• Nexus descriptions and bilingual upload files

Requirements

The MO2 installation ZIP contains the DLL, starter distribution JSON, three asset-folder placement guides, LICENSE, and THIRD_PARTY_NOTICES.md only. Release notes, changelogs, Nexus descriptions, and developer documentation stay on GitHub and in the source archive, not in the installed mod folder.

• SKSE64 matching the installed Skyrim runtime
• Address Library for SKSE Plugins matching the installed runtime
• RaceMenu with BodyMorph and NiOverride support
• BodySlide presets built with Build Morphs for body changes
• Compatible body/outfit TRI data for visible body and outfit correction

SmoothCam and OBody NG are optional. SmoothCam camera control is requested through its public API when present. OBody NG is used only when the user explicitly imports distribution or outfit-correction rules; its JSON is never silently loaded at startup.

Compared with OBody NG

OBody NG and Body Change NG both ultimately write BodySlide slider values through RaceMenu's BodyMorph interface and display them through built TRI data. Body Change NG does not replace the actor's body mesh. Its distinction is the native control and ownership layer around that shared morph mechanism:

• a standalone F7 native ImGui interface, not an MCM;
• D-pad list/tab navigation with gamepad confirm and cancel actions;
• separate BodyChangeNG, BodyChangeNGPreview, and BodyChangeNGOutfit morph keys for committed, live-preview, and outfit states;
• latest-selection generation checks that discard superseded preview/apply work;
• explicit, ordered Body and Skin pools with independent distribute/exclude decisions;
• native in-game condition/pool/priority editing with separate Distribute to loaded NPCs now and Distribute on next game launch actions;
• persistent Body, Skin, and Tint favorites with per-tab favorites-only views;
• save-specific actor selections and apply signatures that avoid repeating a complete unchanged distribution pass; and
• integrated actor skins, player tint detail, and RaceMenu rebuild recovery.

This is a different workflow rather than a claim that RaceMenu receives a new kind of morph. OBody NG remains optional and is not required for Body Change NG's body application.

Compared with the legacy BodyChange

The installed BodyChange architecture defines fixed CustomSet slots. BodySlide writes a separate body NIF into each slot, and its Papyrus effect calls SetSkin, ChangeHeadPart, and SetFaceTextureSet to switch the corresponding ESP records together. A skin choice is therefore coupled to a prepared mesh and record set.

Body Change NG does not use that ESP/Papyrus replacement path. It keeps the actor's current Skin Armor, HeadPart, and NIFs; body shape is applied through RaceMenu BodyMorph, while Skin uses ownership-aware RaceMenu/NiOverride texture overrides against the actor's exact loaded body, hand, foot, and face parts. Body and Skin can consequently be mixed independently, for the player or NPCs, without building one mesh copy per skin slot.

There are no fixed CustomSet1-CustomSet20 catalog slots. BodySlide preset XML files and top-level Skin/Tint pack folders are scanned into the UI. They can be added while Skyrim is running and discovered with the relevant Refresh button. Player Tint also supports immediate per-layer color and opacity edits, plus restoration of the pre-change RaceMenu value.

NPC Body/Skin conditions, pool contents, and priority are edited in the same in-game GUI. The result can be distributed to currently loaded NPCs immediately or saved for the next launch without changing the active session. Body, Skin, and Tint catalogs each support persistent stars and a favorites-only view.

Installation

Install the release archive with MO2 or another mod manager. Keep the included folder structure intact, enable the mod, and launch through SKSE. Put personal assets in the included folders and press the corresponding in-game Refresh button after adding files:

• CalienteTools\BodySlide\SliderPresets — BodySlide preset XML files
• BodySkin\<pack name>\Textures\actors\character\... — conventional skin packs
• Conventional female packs may keep optional femaleold body/hand/face channels and race-specific *female\femalehead*_msn.dds folders under the same original Textures\actors\character tree. They stay in one pack row and are selected for the matching actor.
• CBBE 3BA female packs may also provide femalebody_etc_v2_1.dds plus _msn, _sk, and _s; these channels target the matching 3BA/3BBB vagina and anus geometries, which share this atlas.
• BHUNP/UNP female packs may keep BakaUNP\VaginalAnalCanal2.dds plus _msn, _sk, and _s; these channels target only the matching vagina, anus, and canal geometries.
• BodySkin\<pack name>\Textures\actors\character\argonianfemale|argonianmale|khajiitfemale|khajiitmale — beast-race skin packs
• BodySkin\<pack name>\Textures\!UBE\Body and ...\Head — UBE 2.0 skin packs
• TintMask\<pack name>\textures\...\tintmasks — player tint DDS packs
• Futanari\<pack name>\Textures\!UBE\Body — UBE SOS/TNG genital skin packs
• Futanari\<pack name>\Textures\[TRX] Futa addon\Regular\Default — CBBE 3BA TRX genital skin packs
• Futanari\<pack name>\Textures\ERF_Futanari\FairSkinCBBE — CBBE 3BA ERF genital skin packs

Runtime UI

• The first opening is centered; later openings restore the last saved window position, including after a game restart.
• The runtime detects 1080p, 1440p, and 4K. The single Text size setting scales text, controls, spacing, lists, popups, and the default window size together.
• Korean, English, and Simplified Chinese are built and rendered as UTF-8. Automatic language selection follows the Windows display language and does not require Windows' optional “Beta: Use Unicode UTF-8” system-locale mode.
• In SE/AE third-person view, Character position while open can frame the selected actor on the left or right without moving their world position. The normal framing uses FOV 70, distance 200, symmetric horizontal offsets ±70, vertical offset -45, and pitch 0.1. Right-drag the outer character area to rotate. While paused, the menu orbits only its camera so FSMP bones are not separated from the actor root; while unpaused, actor and camera rotate together. Camera target, facing, offsets, FOV, projection frustum, and both current and target zoom are restored on target change or close.
• The actor selector searches every currently loaded, rendered NPC by name or hexadecimal FormID and labels entries as Name, Sex (FormID).
• Body, skin, and tint-pack rows update the live actor on one click. A double-click confirms that row and keeps the picker open; closing the picker confirms its last live row. Every main window and popup supports Escape, and the configured F7 chord always toggles the main window.
• Keyboard Up/Down or W/S and gamepad D-pad Up/Down move the live catalog row. Keyboard Left/Right or A/D and gamepad D-pad Left/Right switch tabs. Enter, Space, or the gamepad primary face button confirms a row; Escape or the gamepad cancel face button closes and confirms the picker. Catalog navigation is disabled while a text field owns focus.
• While an ImGui text field is active, Skyrim's standard text-input state is enabled so compatible hotkey mods suppress their shortcuts. The state is unconditionally released when the field or menu closes.
• While the window remains open, the actual Skyrim CursorMenu state is checked every frame. If another mod closes its own UI and hides the shared cursor, Body Change NG restores it without claiming or forcibly hiding a cursor that belongs to another open menu.

Runtime asset folders

• BodySlide presets: CalienteTools\BodySlide\SliderPresets\*.xml
• Conventional skin packs: BodySkin\<pack name>\Textures\actors\character\...
• Optional conventional female variants: original femaleold, nordfemale, bretonfemale, darkelffemale, highelffemale, imperialfemale, femaleorc, redguardfemale, and woodelffemale directories in that same tree. Missing variant channels fall back to the pack's base female channel, then to the actor's original texture.
• Argonian/Khajiit skin packs: the same BodySkin\<pack name> root with the original argonianfemale, argonianmale, khajiitfemale, or khajiitmale folders below Textures\actors\character
• UBE 2.0 skin packs: BodySkin\<pack name>\Textures\!UBE\Body and BodySkin\<pack name>\Textures\!UBE\Head
• SOS male genital textures: preserve the source addon's directory below BodySkin\<pack name>\Textures\actors\character\SOS\<addon name>, including malegenitals_1* and any supplied malegenitals_argonian_1*, malegenitals_khajiit_1*, or malegenitals_old_1* files. The live slot-52 ArmorAddon selects the matching addon/race variant; absent channels remain unchanged.
• Player tint packs: TintMask\<pack name>\textures\...\tintmasks\*.dds
• Distribution rules: SKSE\Plugins\BodyChangeNGdistribution.json

The release includes a README.txt in each asset folder and a valid schema-4 distribution file containing the eight initial body/skin exclusion rows. The in-game distribution editor updates this JSON; OBody's JSON remains a separate, explicit import source.

The Refresh button in each tab rescans that tab's catalog, including files added while the game is running. Skin and tint pack names may contain Unicode characters. CBBE and CBBE 3BA presets are presented as one CBBE 3BA family. Skin catalogs additionally match the selected actor's humanoid, Argonian, or Khajiit race and female/male sex before preview, reapply, or NPC distribution. Mixed CBBE 3BA/UBE installations are supported: the selected actor's live skin/head texture namespace resolves its family, and BodySlide Preset/@set plus XML Group metadata classifies the preset. UBE and CBBE 3BA continue to share the standard SliderPresets XML folder.

Legacy BodyChange RaceMenu presets

When the old BodyChange.esp is no longer loaded, Body Change NG inspects the currently visible Data\SKSE\Plugins\CharGen\Presets\*.jslot files once at startup. A stale BodyChange.esp face HeadPart is replaced with 00KLH_FemaleHeadNord when High Poly Head.esm is available, or Skyrim's vanilla FemaleHeadNord otherwise. The original preset is saved beside it as .body-change-ng.bak (or the next numbered backup) before an atomic rewrite. Malformed and unrelated presets are never rewritten.

This repair concerns RaceMenu .jslot HeadParts, not BodySlide XML body presets. UBE is a separate custom-race/head system, so any .jslot carrying an UBE plugin dependency is preserved instead of being redirected to a vanilla or High Poly Head face.

Each top-level BodySkin or TintMask folder appears as one list row. Skin rows show sex and mapped texture count; tint rows show sex and DDS count. The first tint entry restores the original layers captured immediately before Body Change NG first changes each layer in that save. The tint-detail footer lists only active layers for which the selected pack has a usable DDS. Its DDS is chosen automatically for the player's current race; race-specific files for a different race are not offered as fallbacks. Each available layer can be color and opacity adjusted or restored independently to its captured RaceMenu value.

The direct body and skin lists work for both the player and a selected NPC. NPC skin packs can also be selected independently inside each NPC distribution rule. Body and skin pools are evaluated top-down; the first matching rule owns both pools, and an empty pool leaves that category unchanged. Body and skin state is isolated per actor. Distribution targets can use all NPCs, custom followers, elders, plugin files, races, factions, keywords, classes, combat styles, names, or an exact NPC base FormID. Form-backed targets are stored as plugin plus local FormID so load-order changes do not break them. The body- and skin-pool editors have independent name filters and vertical scrolling. Tint remains player-only, so only the Tint tab is hidden when an NPC is selected.

Skin application uses the selected actor's live FaceGen subtree and RaceMenu's persistent texture overrides. Standard body, hands, feet, face, vampire-face, normal (_msn), subsurface (_sk), specular (_s), and compatible FaceGen detail DDS channels are handled without changing NIFs or Skin Armor records. Partial packs change only the supplied part/channel pairs; missing values retain the actor's underlying textures, and body, hands, feet, and face files are never substituted for one another. For male actors, conventional body/hand/foot/face files use the same rules. Optional SOS malegenitals_* files are applied only to the equipped slot-52 genital geometry whose addon model directory matches the pack. VectorPlexus Muscular may inherit the source addon's Regular diffuse/subsurface/specular channels while overriding only its supplied Muscular normal, exactly matching the shipped SOS material layout. UBE 2.0 profiles are detected from Textures\!UBE\Body and Head, map their diffuse/normal/skin atlases to the actor's UBE slot-53 body and live face, and do not invent shader slots for optional PBR/RFAOS/wet maps owned by the active material setup. The Skin and player Tint catalogs hide known-incompatible families while preserving the existing show-all fallback when actor evidence is uncertain. NPC distribution rules may keep mixed body and skin pools; runtime selection checks each matched actor's sex and known body family while the editor preserves the user's selected pool. Uncertain body-family evidence retains the conservative fallback.

When the player leaves RaceMenu, Body Change NG waits for RaceMenu's final geometry and tint-array rebuild, then restores the currently confirmed body, skin, and tint selections. Tint reconstruction applies the selected pack first, then its per-layer detail edits and original-value restores. A default selection leaves that category under RaceMenu's ownership instead of reintroducing an old override.

Actor results are stored in the SKSE co-save with resolvable actor references, so unchanged NPCs are not fully redistributed every time a save loads. Rules remain global in BodyChangeNGdistribution.json; evaluated actor results are save-specific. New or changed actors are coalesced through a handle-based work queue, and detached actors do not leave stale preview or apply generations. The initial loaded-NPC pass waits for engine update boundaries after loading. Normal mode budgets up to four actor jobs / 2ms per batch; performance mode budgets two / 1ms. Direct selections receive a reserved opportunity within that budget, with aging protection for automatic work. An indivisible native call can exceed the budget. Catalog and form scans are not performed per actor or per frame. Content-signature updates can cause a one-time reevaluation of older saved apply results.

The outfit popup can explicitly register OBody NG's complete ORefit rule set from Data\SKSE\Plugins\OBody_presetDistributionConfig.json. Outfit-name, plugin and FormID exclusions, name and FormID force-refit entries, and the female/male outfit-to-refit-preset mappings are imported without modifying the OBody source file. An outfit-specific mapping is evaluated before the current body's -Refit preset, the sex-wide fallback, and the procedural fallback. The OBody Next Generation ORefit JSON Master List by SlickSilk is explicitly supported as an optional import source. Its JSON and assets are not redistributed by Body Change NG.

Source and license

Body Change NG is released under GPL-3.0. The Git repository uses pinned submodules; each GitHub release also provides a complete source archive with the vendored dependency sources and applicable licenses needed to reproduce the release build. Exact versions are listed in DEPENDENCIES.md. Build with the pinned xmake 3.1.0 (xmake f -m release, then xmake build BodyChangeNG); output is build/v1.1.2/windows/x64/release/BodyChangeNG.dll. The checked-in scripts/Package-Release.ps1 creates versioned binary/source archives from a clean Git revision and verifies the archive contents. Referenced mods and compatible JSON files retain their respective authors' copyright and licenses and are not bundled with Body Change NG.

Credits

• OBody NG — established BodySlide distribution and ORefit JSON compatibility behavior.
• OBody Next Generation ORefit JSON Master List by SlickSilk — optional JSON-format compatibility and validation target.
• Skyrim Fitting System — public GPL-3.0 reference for the optional menu character presentation and its safe pause/rotation lifecycle.
• CommonLibSSE-NG, Dear ImGui, pugixml, and nlohmann/json — see their bundled upstream licenses in the source dependencies.