RetroAPI

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RetroAPI

By SlainlightOwner

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Block, Item, Recipe, Entity, Dimension Registration API for Legacy Minecraft. Supports Ornithe and Babric. Optionally Works with StationAPI.

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About

Description

RetroAPI

RetroAPI is a content-registration library for Minecraft Beta 1.7.3 that lets mods add blocks, items, recipes, entities, dimensions and more without requiring StationAPI. It runs on Ornithe (Fabric Loader + OSL) and Babric, and transparently delegates to StationAPI when that mod is also installed.

Developer Portal

To start developing for b1.7.3 with it go here!
https://matthewperiut.github.io/retroapi/index.html

What it implements

Registration

  • Custom blocks and items with automatic, stable ID assignment - block IDs are expanded well past the vanilla 256 cap, and assignments persist across loads.
  • Block entities without subclassing BlockWithBlockEntity (RetroBlockEntityType).
  • Inventory / menu GUIs (chest, furnace and dispenser styles) with automatic slot sync (@SyncField).
  • Crafting, smelting and furnace-fuel recipes (RetroRecipes).
  • Custom entities with renderers, and custom dimensions reached through walk-in portal blocks.
  • Achievements and achievement pages.
  • Sound autoloading and automatic lang / translation generation.

Rendering

  • Expanded texture atlas plus custom block and item renderers and render types.

Vanilla-safe world storage (sidecar system)

  • All modded content is written to retroapi/ sidecar files keyed by string identifiers, so a world can be opened in vanilla without crashing or losing data and reopened in RetroAPI intact.
  • Covers extended block IDs, modded block entities, modded items inside vanilla containers, and dropped item entities.

Multiplayer

  • OSL-based networking with server-to-client ID mapping sync and extended-block chunk sync.

StationAPI compatibility (optional, bundled)

  • Ships a retroapi-stationapi companion that loads only when StationAPI is also present and delegates registration, rendering, dimensions and world conversion to StationAPI. With it, RetroAPI worlds round-trip through StationAPI's flattened world format without data loss.

Both jars include the StationAPI compatibility layer; it activates automatically if StationAPI is installed and stays dormant otherwise.