Changelog

0.1.0-beta3 — dimensions, structures & reliable Distant Horizons pregeneration

✨ Added

• The End and Nether dimensions – vanilla generators as data-pack JSONs, included in the void world preset. Portals work out of the box (the cave generator already creates nether portals), so the game can be finished on a TifWorldGen world.
• Vanilla-stronghold generation on custom maps – strongholds now spawn via the vanilla concentric-rings placement (28 strongholds, vanilla rarity) but are guaranteed to stay inside the height map. /locate works consistently.
• Ancient Cities can now generate – the deep_dark biome noise thresholds were above the noise output range (0% coverage); recalibrated so deep dark regions appear and ancient cities have a place to spawn.

🐛 Fixed

• DH pregeneration no longer loses chunks – Distant Horizons has an internal 500-item chunk update queue and silently discards the furthest queued chunks when it overflows. Large pregeneration runs lost most of their data (progress reached 100% while LODs were missing). The pregenerator now applies backpressure: workers wait until the DH queue drains below a safe level before each injection.
• DH injection failures are no longer silent – the result of every overwriteChunkDataAsync call is checked and the first rejections are logged with the DH error message; a read-only DH session is reported in chat and the log.
• Stale DH level wrappers – the DH level wrapper is cached per ServerLevel instance and refreshed when the world changes; injections no longer disappear into a dead level after switching worlds.
• Structures respect the underground floor – mineshafts and strongholds can no longer anchor below the void floor (starts entirely below the floor are invalidated). Vanilla anchoring code (moveBelowSeaLevel) now sees vanilla-safe minY/seaLevel values, so pieces land at proper vanilla depths instead of up to 2000 blocks below the floor.
• Nothing generates outside the height map – outside the map is the void biome, which also prevents vanilla from placing structures and from /locate pointing at empty spots.

🔄 Changed

• Underground depth rule – height maps with a high minY (≥ 40) get stone, caves and bedrock only down to vanilla Y −64 with plain void below (same as a regular world). Deep maps (minY < 40) still generate across the full world depth.
• Pixel-exact biomes – edgeSmooth now defaults to 0 (no border wobble); the height map min/max is computed exactly (full scan) instead of sampled, so biome band boundaries no longer shift by ~2 blocks.
• Maps auto-align to the height map – forest and water maps scale independently on both axes (X and Z) to match the height map resolution, including different aspect ratios. The height map is the master; everything else adapts.
• LOD trees match the real world – the DH pregeneration builds simulated chunks with the full pipeline (biomes → terrain → surface → trees). Trees use per-biome species and density: old-growth taigas mix giant and regular spruces, birch forests have tall birches, savannas get acacias; windswept hills are treeless and overall forest density is roughly halved so canopies no longer merge into solid bands. forestType rules are respected (-1 forbids trees, 0 = auto, 1 = broadleaf, 2 = spruce).
• LOD snow follows the seasons – simulated chunks use the current seasonal freeze line (snapshotted at pregeneration start) so the LOD visually matches the world, where Serene Seasons + Snow Real Magic place snow along the same line. Real terrain keeps the permanent (highest) line as a stable snow base.
• Faster DH pregeneration – chunk simulation runs on a worker pool (up to 8 threads) and simulated chunks are filled surface-only: stone is placed only ~8 blocks below the chunk's lowest surface instead of down to the world floor. LOD output is identical, chunk building is much cheaper.
• Automatic LOD invalidation – the chunk registry fingerprint (now v10) covers the pipeline version, snow lines, maps, slopes, Y range and all biome rules; chunks generated with an older config or code are regenerated automatically.
• All in-game messages, log output and code comments are in English (chat messages, [TIFWORLDGEN] / [TIF-SEASONS] logs, build output).
• Config screen – hover tooltips removed from the layer and configure buttons (they were rendered twice).

0.1.0-beta2 — stability & worldgen fixes

🐛 Fixed

• Worlds now save correctly on disconnect – map readers were closed before the world finished saving, which could abort the save entirely, or silently complete in-flight chunks as empty "ghost chunks" when leaving during terrain generation. Readers are now released only after the world is fully saved (ServerStoppedEvent).
• No more ghost chunks – chunk generation refuses to run without a working heightmap reader: the chunk is left ungenerated and retried later, instead of being saved as empty terrain.
• Generation errors can no longer destroy chunks – every generation step (terrain, biomes, surface, caves, structures, decorations, mob spawning) is guarded: on an unexpected error the chunk keeps safe fallback terrain and the error is logged with the chunk position and a full stack trace (log messages in English).
• Color Mapping screen at high GUI scale – the tab no longer overflows the screen at GUI scale Auto / 4 (small windows). Widgets stay vanilla-sized, long buttons adapt their width, overlong map names are shortened with "…" and show the full name in a tooltip, and the whole tab scrolls when the window is short.

✨ Added

• River and ocean biomes from the water mask – narrow water areas get a river biome, large lakes get an ocean biome (kelp-friendly). River depth adapts to the width of the water area.
• Unified map list (maps[]) – every map is an equal entry in one list; no more "custom vs fixed" split. Old configurations migrate automatically on first start.

🔧 Changed

• Map layer generators always read through the current map reader instance (no stale references after a config reload).
• Slovak in-game log messages with a unified [TIFWORLDGEN] prefix.
• Documentation and in-jar descriptions updated.

0.1.0-beta1 — first public beta

✨ Highlights

• Built-in pure-Java GeoTIFF engine – the mod no longer depends on GDAL or any native library. Reads classic TIFF and BigTIFF (tested with a 14 GB heightmap, designed for 100 GB+ files), stripped and tiled layouts, LZW and Deflate compression. Verified pixel-perfect against GDAL before the switch (336,959 sampled pixels, 0 differences).
• Zero-install experience – no DLLs, no system packages, no .so files. Works on Windows, Linux and macOS out of the box: just drop the jar into mods/.
• Dedicated server support – create worlds with level-type=tifworldgen:void_preset and manage everything in-game (verified on a production Forge server):
  • /tifworldgen info – loaded heightmap size and path
  • /tifworldgen maps – configured maps overview with missing-file check
  • /tifworldgen config – effective configuration overview
  • /tifworldgen reload – reload config and map readers without restart
  • /tifworldgen set <key> <value> – change any setting in-game (saved + applied instantly)
  • /tifworldgen map add/remove – register map files without editing JSON
  • works over RCON for headless servers
• Portable configuration – map paths now support relative paths (resolved against the game directory on both client and server). Configure everything comfortably in singleplayer, then copy config/tifworldgen.json and the tifworldgen/maps/ folder to the server – no edits needed.
• Single-file distribution – the all-in-one jar bundles the library inside (Forge JarJar), so players download exactly one file.

🔧 Changed

• Rewritten map layer readers (HeightMapReader, WaterLayer, ForestLayer, StructureLayer) on top of the new engine – also removes the thread-local dataset handling and its file-handle leaks.
• GDAL completely removed from the repository, build and in-jar descriptions.

🔒 Privacy

• Fully offline: no telemetry, no analytics, no network communication of any kind. The mod only reads the map files the player/admin selects.

📦 Upgrading from alpha builds

• Delete the old tifworldgen/native/ folder from your game directory – it is no longer used.
• If you configured maps by absolute paths, they keep working; relative paths (relative to the game directory) are now recommended.