Reference: Mob Lists

Registry type: LibDatabase.MOB_LIST (library_of_exile_mob_list) — SyncTime.NEVER

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MobList

com.robertx22.library_of_exile.database.mob_list.MobList

Implements IAutoGson<MobList>, JsonExileRegistry<MobList>, ITaggable<MobListTag>.

Serialized fields

Field	Type	Default	Description
id	String	""	GUID
weight	int	1000	Selection weight relative to other mob lists
mobs	List<MobEntry>	[]	Weighted list of mob types
tags	MobListTagsHolder	empty	Tags on this list

Constructor

new MobList(String id, int weight, List<MobEntry> mobs, RegistryTag<MobList>... tags)

Key method

MobEntry getRandomMob()   // weighted-random selection from mobs list

Datapack folder: data/<namespace>/library_of_exile_mob_list/

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MobEntry

public int weight;
public String mob_id;   // EntityType ResourceLocation string

Constructor:

new MobEntry(int weight, EntityType<?> mob)
// Stores ForgeRegistries.ENTITY_TYPES.getKey(mob).toString() into mob_id

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MobListTagsHolder

Wraps the list of tag strings for serialization.

boolean has(RegistryTag<MobList> tag)

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RegistryTag<MobList> / MobListTag

new MobListTag(String modid, String id)
// Full tag string: "modid:id"

Built-in tags (MobListTags)

Constant	Full string	Meaning
HAS_FLYING_MOBS	library_of_exile:has_flying_mobs	List contains flying entities
HARVEST	library_of_exile:harvest	Harvest league context
MAP	library_of_exile:map	General map spawning
FOREST	library_of_exile:forest	Forest biome maps
OBELISK	library_of_exile:obelisk	Ancient obelisk spawns

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Built-in mob lists (LibMobLists)

Key	id	Tags
GENERIC_UNDEAD	generic_undead	—
SPIDER_FOREST	spider_forest	—
NETHER	nether	HAS_FLYING_MOBS
EVIL_VILLAGER	evil_villager	—
GREEN	green	HAS_FLYING_MOBS
FOREST	forest	FOREST, HARVEST
MAP_DEFAULT	map_default	MAP

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Runtime API

ExileRegistryContainer<MobList> container = Database.getRegistry(LibDatabase.MOB_LIST);

// Weighted random list:
MobList list = container.random();

// Filter by tag then pick:
List<MobList> mapLists = container.getFiltered(
    ml -> ml.tags.has(MobListTags.MAP)
);
MobList chosen = RandomUtils.weightedRandom(mapLists);

// Resolve the EntityType:
EntityType<?> type = ForgeRegistries.ENTITY_TYPES
    .getValue(new ResourceLocation(chosen.getRandomMob().mob_id));

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JSON template

{
  "id": "my_mod:cave_mobs",
  "weight": 1000,
  "mobs": [
    { "weight": 1000, "mob_id": "minecraft:cave_spider" },
    { "weight": 500,  "mob_id": "minecraft:silverfish" }
  ],
  "tags": {
    "tags": [
      "library_of_exile:map"
    ]
  }
}