WorldFinder 0.2.1 - Vanilla fallback restoration

WorldFinder 0.2.1 restores the vanilla reference behavior that should remain available regardless of which other mods are installed. When no compatibility addon handles custom world generation, WorldFinder must continue to display what the corresponding vanilla Minecraft version would generate for the entered seed.

What happened

WorldFinder tied parts of its vanilla structure catalog too closely to its ability to inspect the active world-generation environment. Mod-owned generation resources could be mistaken for changes to Minecraft's vanilla data, while remote servers had no integrated-server resource manager to inspect.

In both cases, WorldFinder incorrectly discarded part of its own vanilla fallback. This was a general compatibility defect in WorldFinder, not a problem caused by any particular content mod.

This caused three visible regressions:

• the singleplayer seed was no longer detected automatically in an otherwise supported vanilla Normal world;
• Village, Ancient City, Trial Chambers, Pillager Outpost, and Trail Ruins disappeared from the structure filter list;
• the same five filters remained unavailable on remote servers even when the correct seed was entered manually.

What changed

WorldFinder now keeps its version-specific vanilla reference engine available independently from the installed content mods. It also distinguishes between:

• definitions owned by another mod;
• resources that actually replace vanilla entries in the minecraft namespace;
• live generators and biome sources that differ from the supported vanilla Normal profile.

Mod-owned definitions no longer invalidate a vanilla world merely by existing. Real vanilla world-generation replacements and unrecognized active generators still prevent unsafe automatic seed reuse. With a manually entered seed, WorldFinder keeps displaying its clearly defined vanilla reference instead of claiming that it reproduces unsupported custom generation.

On multiplayer and in unsupported world-generation environments, WorldFinder now keeps its complete vanilla structure catalog and loads the exact templates bundled with the running Minecraft version. A manually entered seed therefore produces the normal vanilla reference map without requiring WorldFinder on the server.

If a mod or server changes world generation, a compatibility addon can replace or extend that baseline. Without such an addon, WorldFinder deliberately continues to show the vanilla behavior for the selected Minecraft version rather than hiding filters or pretending to reproduce the custom generation.

Updating

Replace WorldFinder 0.2.0 with the matching 0.2.1 JAR for your Minecraft version and loader. No compatibility addon, configuration change, server-side installation, or manual cache cleanup is required to restore the vanilla reference behavior.

WorldFinder 0.2.1 - Vanilla fallback restoration

WorldFinder 0.2.1 restores the vanilla reference behavior that should remain available regardless of which other mods are installed. When no compatibility addon handles custom world generation, WorldFinder must continue to display what the corresponding vanilla Minecraft version would generate for the entered seed.

What happened

WorldFinder tied parts of its vanilla structure catalog too closely to its ability to inspect the active world-generation environment. Mod-owned generation resources could be mistaken for changes to Minecraft's vanilla data, while remote servers had no integrated-server resource manager to inspect.

In both cases, WorldFinder incorrectly discarded part of its own vanilla fallback. This was a general compatibility defect in WorldFinder, not a problem caused by any particular content mod.

This caused three visible regressions:

• the singleplayer seed was no longer detected automatically in an otherwise supported vanilla Normal world;
• Village, Ancient City, Trial Chambers, Pillager Outpost, and Trail Ruins disappeared from the structure filter list;
• the same five filters remained unavailable on remote servers even when the correct seed was entered manually.

What changed

WorldFinder now keeps its version-specific vanilla reference engine available independently from the installed content mods. It also distinguishes between:

• definitions owned by another mod;
• resources that actually replace vanilla entries in the minecraft namespace;
• live generators and biome sources that differ from the supported vanilla Normal profile.

Mod-owned definitions no longer invalidate a vanilla world merely by existing. Real vanilla world-generation replacements and unrecognized active generators still prevent unsafe automatic seed reuse. With a manually entered seed, WorldFinder keeps displaying its clearly defined vanilla reference instead of claiming that it reproduces unsupported custom generation.

On multiplayer and in unsupported world-generation environments, WorldFinder now keeps its complete vanilla structure catalog and loads the exact templates bundled with the running Minecraft version. A manually entered seed therefore produces the normal vanilla reference map without requiring WorldFinder on the server.

If a mod or server changes world generation, a compatibility addon can replace or extend that baseline. Without such an addon, WorldFinder deliberately continues to show the vanilla behavior for the selected Minecraft version rather than hiding filters or pretending to reproduce the custom generation.

Updating

Replace WorldFinder 0.2.0 with the matching 0.2.1 JAR for your Minecraft version and loader. No compatibility addon, configuration change, server-side installation, or manual cache cleanup is required to restore the vanilla reference behavior.

WorldFinder 0.2.0 - Changelog

WorldFinder 0.2.0 is a complete rewrite of the mod, built as a new and independent foundation for the project.

Why WorldFinder was rebuilt

The previous codebase was no longer suitable for the long-term direction of WorldFinder. The mod was therefore restarted from scratch around a shared architecture that can be maintained across Minecraft versions and mod loaders.

The new seed-map engine was developed independently for WorldFinder and does not use another seed-map mod as its technical foundation.

This clearer open-source foundation makes future maintenance, version support, and community addons more reliable and easier to manage.

Main changes

• Introduced PixelBiomes, WorldFinder's own biome-map engine.
• Rebuilt the seed map for the Overworld, Nether, and End.
• Added progressive background generation and bounded caches for a smoother interface.
• Added dedicated world-generation profiles so compatible Minecraft versions can share the same engine without duplicating the entire mod.
• WorldFinder 0.2.0 targets the following Minecraft versions on Fabric and NeoForge:
  • Minecraft 1.21.1
  • Minecraft 1.21.5
  • Minecraft 1.21.11
  • Minecraft 26.1 through 26.1.2
  • Minecraft 26.2
• Added Overworld vertical biome views for Underground, Surface, and Highlight.
• Reworked biome and structure filters, including multiple selections and clearer reset controls.
• Improved biome highlighting, including Pale Garden and the 26.2 Sulfur Caves profile.
• Improved structure discovery and progressive marker display across all dimensions.
• Restored singleplayer seed detection and session-safe manual seed memory.
• Expanded the map area, simplified the interface, and limited the maximum zoom to a useful range.
• Restored optional waypoint support for JourneyMap, Xaero's Map, and FTB Chunks where compatible. An incompatible optional map integration no longer prevents WorldFinder from starting.
• Added a public addon API and a reusable Core for compatibility with custom world-generation mods.

Important notes before updating

• WorldFinder 0.2.0 is a full rewrite. Map and session state from previous WorldFinder versions is not migrated, although a custom key binding saved in Minecraft's Controls menu is preserved.
• No manual cache cleanup is required. WorldFinder rebuilds its caches automatically and keeps them separated by Minecraft version, seed, connection, dimension, and world-generation profile.
• WorldFinder is client-side and does not need to be installed on the server. Automatic seed detection is available for supported vanilla singleplayer worlds; multiplayer and unsupported world-generation setups require a manual seed or a compatible addon.
• Some exact structure filters require information that is only available in supported local worlds. They may be unavailable on remote servers or unsupported world-generation profiles rather than returning inaccurate markers.
• Waypoint providers depend on the installed Minecraft version, mod loader, and compatible map-mod API. An unavailable provider is disabled without preventing WorldFinder from starting.
• The addon API documentation and a buildable example are included in ADDON_API.md and examples/worldgen-addon.

Open-source addon foundation

WorldFinder is now designed so other developers can add support for custom biomes, structures, and world-generation systems without replacing the main map engine. The public API separates addons from Minecraft-version-specific internals and allows unsupported requests to fail safely instead of returning misleading results.

This release is the foundation for future WorldFinder versions and compatibility addons. The goal is not only broader version support, but a stable project that can evolve without duplicating the same implementation for every Minecraft release.

WorldFinder 0.2.0 - Changelog

WorldFinder 0.2.0 is a complete rewrite of the mod, built as a new and independent foundation for the project.

Why WorldFinder was rebuilt

The previous codebase was no longer suitable for the long-term direction of WorldFinder. The mod was therefore restarted from scratch around a shared architecture that can be maintained across Minecraft versions and mod loaders.

The new seed-map engine was developed independently for WorldFinder and does not use another seed-map mod as its technical foundation.

This clearer open-source foundation makes future maintenance, version support, and community addons more reliable and easier to manage.

Main changes

• Introduced PixelBiomes, WorldFinder's own biome-map engine.
• Rebuilt the seed map for the Overworld, Nether, and End.
• Added progressive background generation and bounded caches for a smoother interface.
• Added dedicated world-generation profiles so compatible Minecraft versions can share the same engine without duplicating the entire mod.
• WorldFinder 0.2.0 targets the following Minecraft versions on Fabric and NeoForge:
  • Minecraft 1.21.1
  • Minecraft 1.21.5
  • Minecraft 1.21.11
  • Minecraft 26.1 through 26.1.2
  • Minecraft 26.2
• Added Overworld vertical biome views for Underground, Surface, and Highlight.
• Reworked biome and structure filters, including multiple selections and clearer reset controls.
• Improved biome highlighting, including Pale Garden and the 26.2 Sulfur Caves profile.
• Improved structure discovery and progressive marker display across all dimensions.
• Restored singleplayer seed detection and session-safe manual seed memory.
• Expanded the map area, simplified the interface, and limited the maximum zoom to a useful range.
• Restored optional waypoint support for JourneyMap, Xaero's Map, and FTB Chunks where compatible. An incompatible optional map integration no longer prevents WorldFinder from starting.
• Added a public addon API and a reusable Core for compatibility with custom world-generation mods.

Important notes before updating

• WorldFinder 0.2.0 is a full rewrite. Map and session state from previous WorldFinder versions is not migrated, although a custom key binding saved in Minecraft's Controls menu is preserved.
• No manual cache cleanup is required. WorldFinder rebuilds its caches automatically and keeps them separated by Minecraft version, seed, connection, dimension, and world-generation profile.
• WorldFinder is client-side and does not need to be installed on the server. Automatic seed detection is available for supported vanilla singleplayer worlds; multiplayer and unsupported world-generation setups require a manual seed or a compatible addon.
• Some exact structure filters require information that is only available in supported local worlds. They may be unavailable on remote servers or unsupported world-generation profiles rather than returning inaccurate markers.
• Waypoint providers depend on the installed Minecraft version, mod loader, and compatible map-mod API. An unavailable provider is disabled without preventing WorldFinder from starting.
• The addon API documentation and a buildable example are included in ADDON_API.md and examples/worldgen-addon.

Open-source addon foundation

WorldFinder is now designed so other developers can add support for custom biomes, structures, and world-generation systems without replacing the main map engine. The public API separates addons from Minecraft-version-specific internals and allows unsupported requests to fail safely instead of returning misleading results.

This release is the foundation for future WorldFinder versions and compatibility addons. The goal is not only broader version support, but a stable project that can evolve without duplicating the same implementation for every Minecraft release.