1.3.0

Fixed

• Modded remap targets not found in registry (#1) — Remapping to modded IDs (e.g. minecraft:copper_block → create:brass_block) would fail with "not found in item/block registry" and skip the remap. Three separate issues caused this:
  • RemapValidator permanently removed entries for targets not yet registered at validation time. Validation is now non-destructive (warn-only) — entries are preserved and validated at actual injection time.
  • On Forge, the MappedRegistry.freeze() hook fired during bootstrap on the Render thread, racing with mod loading on worker threads. Modded content wasn't registered yet when finalizeIfPending() ran. Finalization and alias injection are now triggered from FMLLoadCompleteEvent, which is guaranteed to fire after all RegisterEvent handlers complete.
  • On Forge 1.20.1, modded entries live in ForgeRegistries, not in vanilla MappedRegistry. Target lookups now go through ForgeRegistries.BLOCKS/ITEMS/etc. instead of the vanilla registry maps.

Added

• Live vanilla block/item remapping — Remapping existing vanilla IDs to modded IDs (e.g. minecraft:copper_block → create:brass_block) now works correctly. Block state IDs are remapped in Block.BLOCK_STATE_REGISTRY so network serialization writes target state IDs instead of crashing with -1.
• Block state property matching — When remapping between blocks with compatible properties (e.g. axis, waterlogged), matching property values are preserved on the target state. Unmatched properties fall back to the target block's defaults.
• IdMapperAccessor (all loaders) — Mixin accessor for Block.BLOCK_STATE_REGISTRY internals, enabling block state ID remapping without corrupting the reverse lookup table.
• MappedRegistryAccessor (Forge) — Mixin accessor for MappedRegistry.byLocation/byKey, used by the new RegistryAliasInjector.
• RegistryAliasInjector (Forge) — Dedicated alias injection helper that uses ForgeRegistries for target lookup and injects into vanilla MappedRegistry where possible.

Changed

• Forge alias injection moved out of MappedRegistryMixin — Registry alias injection on Forge is now handled by RegistryAliasInjector triggered from FMLLoadCompleteEvent, replacing the unreliable freeze() hook. Other loaders retain the freeze()-based approach.