Changelog

2.0.2 - 2026-08-24

Performance

• Moved dragon roost surface-height resolution out of findGenerationPoint() so /locate structure iafdragonfix:*_dragon_roost no longer performs terrain-height queries for every scanned candidate chunk.
• Moved dragon cave depth resolution out of findGenerationPoint() as well, removing the previous 20x20 OCEAN_FLOOR_WG scan from the /locate hot path.
• Added lazy, deterministic Y resolution in DragonDenPiece.postProcess() so actual world generation still uses the same terrain-derived placement logic when the target chunks are being generated.

Fixed

• Replaced the custom dragon den geometry implementation with Ice and Fire's native dragon cave and dragon roost generation methods.
• Added ChunkBoundLevel to safely replay Ice and Fire's feature generators inside structure-piece chunk bounds, preventing cross-chunk block writes from being dropped as far-chunk writes.
• Ensured dragons are spawned only by the structure pass that owns the resolved den center, preventing duplicate dragons while multi-chunk structure pieces replay generation.
• Added fallback handling for unusable surface heightmap results so surface roost dragons stay at the resolved roost height instead of dropping to the world bottom.
• Moved the spawn-distance check into findGenerationPoint() so /locate does not report structures rejected later during postProcess().
• Removed the broken MixinRandomSpreadPlacement, which crashed during startup because constructor variable injection targeted a record constructor before initialization was valid.

Changed

• Dragon den pieces now persist deterministic den parameters through DenParams, including radius, cave dragon age, gender, lazy height state, cave depth offset and per-den generation seed.
• Dragon den pieces now persist center X/Z independently from their bounding box so lazy Y resolution does not affect structure scheduling.
• Lazy-Y pieces use a broad vertical bounding box while preserving the original X/Z generation radius, allowing the resolved roost or cave height to generate correctly later.
• Fire dragon cave and roost biome tags now include desert biomes plus explicit warm plains entries: minecraft:plains, minecraft:sunflower_plains and minecraft:meadow.
• Structure-set defaults now match the server config defaults: dragon roosts use spacing=24, separation=6, frequency=0.6; dragon caves use spacing=32, separation=8, frequency=0.6.

Removed

• Removed unused custom geometry helpers after switching den shape generation back to Ice and Fire's native implementation.
• Removed unused helper methods and imports from the dragon type, feature and mixin classes.

2.0.1 - 2026-08-07

• Initial structure-based dragon den registration with server-configurable placement.