Moog's Structure Lib (moogs_structures)

Added

• Replace-vanilla presets: consumer mods declare replacement presets in data/<namespace>/moogs_structures/replace_vanilla.json; MSL aggregates them from every loaded mod into config/moogs_structures.json as per-preset on/off toggles, so adding a new replacement needs no lib update. The config re-reads on world load.
  • vanilla_loot_swap_processor - rewrites a container's loot table to a vanilla equivalent while its preset is enabled, so mods that inject into the vanilla loot table still fill the replacing structure's chests. No-op when the preset is off.
  • DisableVanillaStructureMixin - cancels generation of a replaced vanilla structure while its preset is enabled.
  • /locate on a replaced vanilla structure now reports which structure replaced it and points at the config instead of running the vanilla search.
  • conditional_concentric_rings structure placement - a concentric-rings placement whose ring count switches on a replacement preset (e.g. full density when replacing, a reduced density when coexisting). Extends the vanilla type so the special ring handling still applies.
• In-game config screen: an optional Cloth Config screen listing every mod's replacement presets as toggles, reached from Mod Menu on Fabric and the mod-list config button on Forge. Cloth Config (and Mod Menu on Fabric) are soft dependencies - absent them, the mod still runs without a screen.
• Structure controls in the config screen (a "Structures" tab): every loaded mod and datapack that ships structures placed by an MSL placement type (advanced_random_spread / conditional_concentric_rings) is listed automatically, grouped by mod, with no opt-in file required (rescanned on datapack reload). Each structure gets:
  • Spacing multipliers - a universal rarity slider plus per-mod and per-structure sliders that scale a structure's spacing/separation (effective = universal x per_mod x per_structure), applied by advanced_random_spread and read once per world load. The owning structure_set id is stamped onto each placement at world load, so a set needs no spacing_key/structure_id in its JSON for the slider and disable toggle to work.
  • Disable - a per-structure toggle that stops a structure from generating, enforced both by structure id at tryGenerateStructure and at the placement, so a disabled structure also stops reporting placement positions (no longer influencing neighbours' exclusion zones or computing concentric rings). /locate on a disabled structure reports it instead of searching.
  • Preview - a per-structure button opening the online structure preview via the vanilla confirm-link screen. The URL is built from an optional per-mod mod_slug and the running game version, so the link tracks whatever Minecraft version the pack is played on. A mod that sets no mod_slug shows the button disabled with a note.
• Config auto-derivation: a mod exposes its structures to these controls by declaring a single mod_slug line in its structures block (or nothing at all, for spacing and disable without previews) rather than hand-listing every structure. Display names, spacing keys and preview paths are derived from each structure_set; an explicit entries array still overrides the derived rows.
• Config changes now also re-read on /reload, not only on world load (they still affect newly generated chunks only).
• Config screen support links: Discord and Ko-fi icon buttons in the top-right of the config screen, each with a close (×) that hides it for good.

Fixed

• msl_pieces_spawn_counts per-piece spawn counts never applied: the reload listener was never registered, so the data was never loaded. It is now registered, and the per-piece max-count cache is cleared on reload so /reload updates it.
• advanced_random_spread could compute torn spacing/separation values under concurrent chunk generation (e.g. with C2ME), risking a divide-by-zero during worldgen or misplaced structures; the effective values are now read from a single immutable snapshot.
• always_false json condition returned true instead of false.