Mixin 挂载点

Variable Horizons 用 GTNHLibMixins 框架挂载 19 个 MixinBuilder，覆盖 23 个 mixin 类（20 个 Phase.EARLY + 3 个 Phase.LATE）。

加载机制

mixin/EarlyMixinLoader.java —— IEarlyMixinLoader
mixin/LateMixinLoader.java —— ILateMixinLoader
mixin/Mixins.java —— public enum Mixins implements IMixins，每个枚举值一个 MixinBuilder
MixinBuilder 的条件式决定变体激活时是否挂载该 mixin

Mixins 枚举末尾还声明了需要识别的 coremod：

ENDLESSIDS("com.falsepattern.endlessids.asm.EndlessIDsCore", "endlessids"),
GALACTICRAFT_CORE("GalacticraftCore"),
GREGTECH("gregtech"),
BOTANIA("Botania"),
RWG(null, "RWG", "rwg.world.ChunkGeneratorRealistic");

19 个 MixinBuilder

Phase.EARLY（16 个）

MixinBuilder	挂载的 mixin 类
`DISABLE_CHUNK_TERRAIN_GENERATION`	`MixinChunkProviderServer_DisableTerrain`
`DISABLE_CHUNK_TERRAIN_GENERATION_ENDLESS_IDS`	`MixinChunkProviderServer_DisableTerrain_EndlessIDs`
`DISABLE_WORLD_TYPE_CHUNK_POPULATION`	`MixinChunkProviderServer_DisablePopulation`、`AccessorChunkProviderGenerate`
`DISABLE_MODDED_CHUNK_POPULATION`	`MixinChunkProviderServer_DisableModGeneration`
`SUPERFLAT_CHUNK_TERRAIN_GENERATION`	`MixinChunkProviderServer_ForceSuperflatTerrain`
`SUPERFLAT_CHUNK_TERRAIN_GENERATION_ENDLESS_IDS`	`MixinChunkProviderServer_ForceSuperflatTerrain_EndlessIDs`
`SKYGRID_CHUNK_TERRAIN_GENERATION`	`MixinChunkProviderServer_ForceSkygridTerrain`
`SKYGRID_CHUNK_TERRAIN_GENERATION_ENDLESS_IDS`	`MixinChunkProviderServer_ForceSkygridTerrain_EndlessIDs`
`ALLOW_VILLAGE_GENERATION_IN_ANY_BIOME`	`MixinMapGenVillage_AllowAnyBiome`、`MixinStructureVillagePieces_AllowAnyBiome`
`ALLOW_RESPAWN_IN_DIMENSION`	`MixinWorldProvider_AllowRespawnInDimension`
`SET_INITIAL_SPAWN_DIMENSION`	`MixinServerConfigurationManager_ChangeInitialSpawnDimension`
`SET_EXACT_SPAWN_LOCATION`	`MixinWorldProvider_SetExactSpawn`
`LOCK_TO_DIMENSION_TRAVEL_TO_DIM`	`MixinEntityPlayerMP_LockDimension`
`LOCK_TO_DIMENSION_TRANSFER_PLAYER_TO_DIM`	`MixinServerConfigurationManager_LockDimension`
`INCREASE_SLIME_SPAWNING_HEIGHT`	`MixinEntitySlime_ExtendedSpawnRange`
`REPLACE_ALL_CHUNK_BLOCKS`	`MixinChunkProviderServer_ReplaceBlocks`、`MixinChunk_ReplaceGeneratedBlocks`

Phase.LATE（3 个）

MixinBuilder	挂载的 mixin 类
`DISABLE_CELESTIAL_SELECTION`	`MixinWorldUtil_DisableCelestialSelection`（禁用 GC 行星地图）
`ADD_SEMINING_RECIPE`	`MixinSpaceMiningRecipes_AddSEminingrecipe`
`REMOVE_ORECHID_IGNEM_DIMRESTRICTION`	`MixinSubTileOrechidIgnem_LetOrechidIgnemRunBesidesNether`

20 + 3 = 23 个 mixin 类全部被这 19 个 builder 引用，无孤儿类。

条件写法

builder 通过 setApplyIf(BooleanSupplier) 决定变体激活时是否挂载。全部 19 个 builder 的条件都同时检查了 GeneralConfig.disableVariants，典型形态：

.setApplyIf(() -> VariantNames.activeContains(VariantNames.SUPERFLAT.id) && !GeneralConfig.disableVariants)

activeContains 会自动把「子变体被组合变体包含」也算作激活，因此条件里只需写子变体 id。

部分 builder 还用 addRequiredMod(TargetedMod.X) 声明前置模组，缺失时该 mixin 不挂载：

TargetedMod	对应 `Mixins` 枚举尾部常量
`GALACTICRAFT_CORE`	`"GalacticraftCore"`
`GREGTECH`	`"gregtech"`
`BOTANIA`	`"Botania"`
`ENDLESSIDS`	`"com.falsepattern.endlessids.asm.EndlessIDsCore", "endlessids"`
`RWG`	`null`（不指定容器类，仅按 `"RWG"` / `"rwg.world.ChunkGeneratorRealistic"` 识别）

条件判断的变体归属

Builder 条件检查的变体	附加条件
`DISABLE_CHUNK_TERRAIN_GENERATION`	`VOID_WORLD` 或 `VOID_ISLAND`
`DISABLE_CHUNK_TERRAIN_GENERATION_ENDLESS_IDS`	`VOID_WORLD` 或 `VOID_ISLAND`
`DISABLE_WORLD_TYPE_CHUNK_POPULATION`	同上
`DISABLE_MODDED_CHUNK_POPULATION`	`VOID_WORLD` 或 `VOID_ISLAND`
`SUPERFLAT_CHUNK_TERRAIN_GENERATION`(+`_ENDLESS_IDS`)	`SUPERFLAT`
`SKYGRID_CHUNK_TERRAIN_GENERATION`(+`_ENDLESS_IDS`)	`SKYGRID`
`ALLOW_VILLAGE_GENERATION_IN_ANY_BIOME`	`SUPERFLAT`
`ALLOW_RESPAWN_IN_DIMENSION`	`CUSTOM_DIM_START` 或 `VOID_ISLAND`
`SET_INITIAL_SPAWN_DIMENSION`	`CUSTOM_DIM_START`
`SET_EXACT_SPAWN_LOCATION`	`SKYGRID` 或 `VOID_ISLAND`
`LOCK_TO_DIMENSION_TRAVEL_TO_DIM`	`DIMLOCKED`
`LOCK_TO_DIMENSION_TRANSFER_PLAYER_TO_DIM`	`DIMLOCKED`
`INCREASE_SLIME_SPAWNING_HEIGHT`	`SUPERFLAT`
`REPLACE_ALL_CHUNK_BLOCKS`	`MONOBLOCK`
`DISABLE_CELESTIAL_SELECTION`	`NO_ROCKET` + 需 `GALACTICRAFT_CORE`
`ADD_SEMINING_RECIPE`	`DIMLOCKED` + `startingDimID != 100` + 需 `GREGTECH`
`REMOVE_ORECHID_IGNEM_DIMRESTRICTION`	`DIMLOCKED` 且 `NO_QUEST_REWARDS` + `startingDimID != -1` + 需 `BOTANIA`

⚠️ disableVariants 只在 Mixins.java 中被引用（全仓其余位置 0 命中）。这意味着由 VariantLoader 在运行时施加的改动（ChancedRecipes、InfinitePower、NoPollution、CrimsonApocalypse、AlteredRecipeTime）不受总开关保护——见源码缺陷。

被改写的原版/第三方类

目标类	来源
`ChunkProviderServer`	原版
`Chunk`、`ExtendedBlockStorage`	原版
`MapGenVillage`、`StructureVillagePieces`	原版
`WorldProvider`	原版
`ServerConfigurationManager`	原版
`EntityPlayerMP`、`EntitySlime`	原版
`ChunkGeneratorRealistic`	Realistic World Gen
`SubTileOrechidIgnem`	Botania
`WorldUtil`	Galacticraft
`SpaceMiningRecipes`	Galacticraft
`GTRecipe` / `Worldgen`	GregTech（经配置与代码直接调用，非 mixin）