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Utilities

Faction-specific tags​

Some tags are keyed per faction. Register them on the mod bus:

bus.addListener((AddFactionTagEvent event) ->
    event.faction(MY_FACTION)
         .add(Registries.ENTITY_TYPE, MY_HUNTABLE_MOBS_TAG)
         .addCustom(MY_CUSTOM_KEY, MY_CUSTOM_TAG));

and read them back with IFactionSpecificTags.get().get(faction, registryKey, fallback).

Target selection​

IFactionPredicate.Builder builds a Predicate<LivingEntity> / TargetingConditions.Selector for "attack anything not my faction" style checks:

IFactionPredicate hostiles = IFactionPredicate.builder(myFaction)
        .notNeutral()          // ignore factionless creatures
        .onlyPlayer()          // players only (optional)
        .ignoreDisguise()      // see through disguises
        .build();

Item data components​

FactionDataComponents exposes the components Vampirism puts on items, e.g.:

  • FACTION_SLAYER (IFactionSlayer) – bonus damage against listed factions.
  • FACTION_RESTRICTION (IFactionRestriction) – item only usable by certain factions.
  • REFINEMENT_SET (IEffectiveRefinementSet) – the refinement set applied to an accessory.

Faction and skill definitions are themselves data-component driven – see the FactionDataComponents Keys for the full list.