Code/net/minecraft/world/entity/SpawnPlacements.java

package net.minecraft.world.entity;

import com.google.common.collect.Maps;
import java.util.Map;
import javax.annotation.Nullable;
import net.minecraft.core.BlockPos;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.ambient.Bat;
import net.minecraft.world.entity.animal.AgeableWaterCreature;
import net.minecraft.world.entity.animal.Animal;
import net.minecraft.world.entity.animal.Fox;
import net.minecraft.world.entity.animal.MushroomCow;
import net.minecraft.world.entity.animal.Ocelot;
import net.minecraft.world.entity.animal.Parrot;
import net.minecraft.world.entity.animal.PolarBear;
import net.minecraft.world.entity.animal.Rabbit;
import net.minecraft.world.entity.animal.TropicalFish;
import net.minecraft.world.entity.animal.Turtle;
import net.minecraft.world.entity.animal.WaterAnimal;
import net.minecraft.world.entity.animal.armadillo.Armadillo;
import net.minecraft.world.entity.animal.axolotl.Axolotl;
import net.minecraft.world.entity.animal.camel.Camel;
import net.minecraft.world.entity.animal.frog.Frog;
import net.minecraft.world.entity.animal.goat.Goat;
import net.minecraft.world.entity.animal.horse.SkeletonHorse;
import net.minecraft.world.entity.animal.horse.ZombieHorse;
import net.minecraft.world.entity.animal.wolf.Wolf;
import net.minecraft.world.entity.monster.Drowned;
import net.minecraft.world.entity.monster.Endermite;
import net.minecraft.world.entity.monster.Ghast;
import net.minecraft.world.entity.monster.Guardian;
import net.minecraft.world.entity.monster.Husk;
import net.minecraft.world.entity.monster.MagmaCube;
import net.minecraft.world.entity.monster.Monster;
import net.minecraft.world.entity.monster.PatrollingMonster;
import net.minecraft.world.entity.monster.Silverfish;
import net.minecraft.world.entity.monster.Slime;
import net.minecraft.world.entity.monster.Stray;
import net.minecraft.world.entity.monster.Strider;
import net.minecraft.world.entity.monster.ZombifiedPiglin;
import net.minecraft.world.entity.monster.hoglin.Hoglin;
import net.minecraft.world.entity.monster.piglin.Piglin;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.ServerLevelAccessor;
import net.minecraft.world.level.levelgen.Heightmap;

public class SpawnPlacements {
    private static final Map<EntityType<?>, SpawnPlacements.Data> DATA_BY_TYPE = Maps.newHashMap();

    private static <T extends Mob> void register(
        EntityType<T> p_21755_, SpawnPlacementType p_331557_, Heightmap.Types p_21757_, SpawnPlacements.SpawnPredicate<T> p_21758_
    ) {
        SpawnPlacements.Data spawnplacements$data = DATA_BY_TYPE.put(p_21755_, new SpawnPlacements.Data(p_21757_, p_331557_, p_21758_));
        if (spawnplacements$data != null) {
            throw new IllegalStateException("Duplicate registration for type " + BuiltInRegistries.ENTITY_TYPE.getKey(p_21755_));
        }
    }

    public static SpawnPlacementType getPlacementType(EntityType<?> p_21753_) {
        SpawnPlacements.Data spawnplacements$data = DATA_BY_TYPE.get(p_21753_);
        return spawnplacements$data == null ? SpawnPlacementTypes.NO_RESTRICTIONS : spawnplacements$data.placement;
    }

    public static boolean isSpawnPositionOk(EntityType<?> p_331487_, LevelReader p_329941_, BlockPos p_327899_) {
        return getPlacementType(p_331487_).isSpawnPositionOk(p_329941_, p_327899_, p_331487_);
    }

    public static Heightmap.Types getHeightmapType(@Nullable EntityType<?> p_21766_) {
        SpawnPlacements.Data spawnplacements$data = DATA_BY_TYPE.get(p_21766_);
        return spawnplacements$data == null ? Heightmap.Types.MOTION_BLOCKING_NO_LEAVES : spawnplacements$data.heightMap;
    }

    public static <T extends Entity> boolean checkSpawnRules(
        EntityType<T> p_217075_, ServerLevelAccessor p_217076_, EntitySpawnReason p_369208_, BlockPos p_217078_, RandomSource p_217079_
    ) {
        SpawnPlacements.Data spawnplacements$data = DATA_BY_TYPE.get(p_217075_);
        return spawnplacements$data == null || spawnplacements$data.predicate.test((EntityType)p_217075_, p_217076_, p_369208_, p_217078_, p_217079_);
    }

    static {
        register(EntityType.AXOLOTL, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Axolotl::checkAxolotlSpawnRules);
        register(EntityType.COD, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, WaterAnimal::checkSurfaceWaterAnimalSpawnRules);
        register(EntityType.DOLPHIN, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, AgeableWaterCreature::checkSurfaceAgeableWaterCreatureSpawnRules);
        register(EntityType.DROWNED, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Drowned::checkDrownedSpawnRules);
        register(EntityType.GUARDIAN, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Guardian::checkGuardianSpawnRules);
        register(EntityType.PUFFERFISH, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, WaterAnimal::checkSurfaceWaterAnimalSpawnRules);
        register(EntityType.SALMON, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, WaterAnimal::checkSurfaceWaterAnimalSpawnRules);
        register(EntityType.SQUID, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, AgeableWaterCreature::checkSurfaceAgeableWaterCreatureSpawnRules);
        register(EntityType.TROPICAL_FISH, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, TropicalFish::checkTropicalFishSpawnRules);
        register(EntityType.ARMADILLO, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Armadillo::checkArmadilloSpawnRules);
        register(EntityType.BAT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Bat::checkBatSpawnRules);
        register(EntityType.BLAZE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkAnyLightMonsterSpawnRules);
        register(EntityType.BOGGED, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.BREEZE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkAnyLightMonsterSpawnRules);
        register(EntityType.CAMEL, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Camel::checkCamelSpawnRules);
        register(EntityType.CAVE_SPIDER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.CHICKEN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.COW, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.CREEPER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.DONKEY, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.ENDERMAN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.ENDERMITE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Endermite::checkEndermiteSpawnRules);
        register(EntityType.ENDER_DRAGON, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.FROG, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Frog::checkFrogSpawnRules);
        register(EntityType.GHAST, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Ghast::checkGhastSpawnRules);
        register(EntityType.GIANT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.GLOW_SQUID, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, GlowSquid::checkGlowSquidSpawnRules);
        register(EntityType.GOAT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Goat::checkGoatSpawnRules);
        register(EntityType.HORSE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.HUSK, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Husk::checkHuskSpawnRules);
        register(EntityType.IRON_GOLEM, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.LLAMA, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.MAGMA_CUBE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, MagmaCube::checkMagmaCubeSpawnRules);
        register(EntityType.MOOSHROOM, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, MushroomCow::checkMushroomSpawnRules);
        register(EntityType.MULE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.OCELOT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING, Ocelot::checkOcelotSpawnRules);
        register(EntityType.PARROT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING, Parrot::checkParrotSpawnRules);
        register(EntityType.PIG, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.HOGLIN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Hoglin::checkHoglinSpawnRules);
        register(EntityType.PIGLIN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Piglin::checkPiglinSpawnRules);
        register(EntityType.PILLAGER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, PatrollingMonster::checkPatrollingMonsterSpawnRules);
        register(EntityType.POLAR_BEAR, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, PolarBear::checkPolarBearSpawnRules);
        register(EntityType.RABBIT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Rabbit::checkRabbitSpawnRules);
        register(EntityType.SHEEP, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.SILVERFISH, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Silverfish::checkSilverfishSpawnRules);
        register(EntityType.SKELETON, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.SKELETON_HORSE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, SkeletonHorse::checkSkeletonHorseSpawnRules);
        register(EntityType.SLIME, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Slime::checkSlimeSpawnRules);
        register(EntityType.SNOW_GOLEM, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.SPIDER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.STRAY, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Stray::checkStraySpawnRules);
        register(EntityType.STRIDER, SpawnPlacementTypes.IN_LAVA, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Strider::checkStriderSpawnRules);
        register(EntityType.TURTLE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Turtle::checkTurtleSpawnRules);
        register(EntityType.VILLAGER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.WITCH, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.WITHER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.WITHER_SKELETON, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.WOLF, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Wolf::checkWolfSpawnRules);
        register(EntityType.ZOGLIN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkAnyLightMonsterSpawnRules);
        register(EntityType.CREAKING, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.ZOMBIE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.ZOMBIE_HORSE, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, ZombieHorse::checkZombieHorseSpawnRules);
        register(EntityType.ZOMBIFIED_PIGLIN, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, ZombifiedPiglin::checkZombifiedPiglinSpawnRules);
        register(EntityType.ZOMBIE_VILLAGER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.CAT, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.ELDER_GUARDIAN, SpawnPlacementTypes.IN_WATER, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Guardian::checkGuardianSpawnRules);
        register(EntityType.EVOKER, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.FOX, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Fox::checkFoxSpawnRules);
        register(EntityType.ILLUSIONER, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.PANDA, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.PHANTOM, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.RAVAGER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.SHULKER, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.TRADER_LLAMA, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Animal::checkAnimalSpawnRules);
        register(EntityType.VEX, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.VINDICATOR, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
        register(EntityType.WANDERING_TRADER, SpawnPlacementTypes.ON_GROUND, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Mob::checkMobSpawnRules);
        register(EntityType.WARDEN, SpawnPlacementTypes.NO_RESTRICTIONS, Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, Monster::checkMonsterSpawnRules);
    }

    record Data(Heightmap.Types heightMap, SpawnPlacementType placement, SpawnPlacements.SpawnPredicate<?> predicate) {
    }

    @FunctionalInterface
    public interface SpawnPredicate<T extends Entity> {
        boolean test(EntityType<T> p_217081_, ServerLevelAccessor p_217082_, EntitySpawnReason p_365908_, BlockPos p_217084_, RandomSource p_217085_);
    }
}