net.minestom.server.entity.MetadataHolder Maven / Gradle / Ivy
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1.20.4 Lightweight Minecraft server
package net.minestom.server.entity;
import net.minestom.server.entity.metadata.EntityMeta;
import net.minestom.server.entity.metadata.PlayerMeta;
import net.minestom.server.entity.metadata.ambient.BatMeta;
import net.minestom.server.entity.metadata.animal.*;
import net.minestom.server.entity.metadata.animal.tameable.CatMeta;
import net.minestom.server.entity.metadata.animal.tameable.ParrotMeta;
import net.minestom.server.entity.metadata.animal.tameable.WolfMeta;
import net.minestom.server.entity.metadata.display.BlockDisplayMeta;
import net.minestom.server.entity.metadata.display.ItemDisplayMeta;
import net.minestom.server.entity.metadata.display.TextDisplayMeta;
import net.minestom.server.entity.metadata.flying.GhastMeta;
import net.minestom.server.entity.metadata.flying.PhantomMeta;
import net.minestom.server.entity.metadata.golem.IronGolemMeta;
import net.minestom.server.entity.metadata.golem.ShulkerMeta;
import net.minestom.server.entity.metadata.golem.SnowGolemMeta;
import net.minestom.server.entity.metadata.item.*;
import net.minestom.server.entity.metadata.minecart.*;
import net.minestom.server.entity.metadata.monster.*;
import net.minestom.server.entity.metadata.monster.raider.*;
import net.minestom.server.entity.metadata.monster.skeleton.BoggedMeta;
import net.minestom.server.entity.metadata.monster.skeleton.SkeletonMeta;
import net.minestom.server.entity.metadata.monster.skeleton.StrayMeta;
import net.minestom.server.entity.metadata.monster.skeleton.WitherSkeletonMeta;
import net.minestom.server.entity.metadata.monster.zombie.*;
import net.minestom.server.entity.metadata.other.*;
import net.minestom.server.entity.metadata.projectile.*;
import net.minestom.server.entity.metadata.villager.VillagerMeta;
import net.minestom.server.entity.metadata.villager.WanderingTraderMeta;
import net.minestom.server.entity.metadata.water.AxolotlMeta;
import net.minestom.server.entity.metadata.water.DolphinMeta;
import net.minestom.server.entity.metadata.water.GlowSquidMeta;
import net.minestom.server.entity.metadata.water.SquidMeta;
import net.minestom.server.entity.metadata.water.fish.*;
import net.minestom.server.network.packet.server.play.EntityMetaDataPacket;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.VarHandle;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.function.BiFunction;
public final class MetadataHolder {
private static final VarHandle NOTIFIED_CHANGES;
static {
try {
NOTIFIED_CHANGES = MethodHandles.lookup().findVarHandle(MetadataHolder.class, "notifyAboutChanges", boolean.class);
} catch (NoSuchFieldException | IllegalAccessException e) {
throw new IllegalStateException(e);
}
}
private final Entity entity;
private volatile Metadata.Entry[] entries = new Metadata.Entry[0];
private volatile Map> entryMap = null;
@SuppressWarnings("FieldMayBeFinal")
private volatile boolean notifyAboutChanges = true;
private final Map> notNotifiedChanges = new HashMap<>();
public MetadataHolder(@Nullable Entity entity) {
this.entity = entity;
}
@SuppressWarnings("unchecked")
public T getIndex(int index, @Nullable T defaultValue) {
final Metadata.Entry[] entries = this.entries;
if (index < 0 || index >= entries.length) return defaultValue;
final Metadata.Entry entry = entries[index];
return entry != null ? (T) entry.value() : defaultValue;
}
public void setIndex(int index, @NotNull Metadata.Entry entry) {
Metadata.Entry[] entries = this.entries;
// Resize array if necessary
if (index >= entries.length) {
final int newLength = Math.max(entries.length * 2, index + 1);
this.entries = entries = Arrays.copyOf(entries, newLength);
}
entries[index] = entry;
this.entryMap = null;
// Send metadata packet to update viewers and self
final Entity entity = this.entity;
if (entity != null && entity.isActive()) {
if (!this.notifyAboutChanges) {
synchronized (this.notNotifiedChanges) {
this.notNotifiedChanges.put(index, entry);
}
} else {
entity.sendPacketToViewersAndSelf(new EntityMetaDataPacket(entity.getEntityId(), Map.of(index, entry)));
}
}
}
public void setNotifyAboutChanges(boolean notifyAboutChanges) {
if (!NOTIFIED_CHANGES.compareAndSet(this, !notifyAboutChanges, notifyAboutChanges))
return;
if (!notifyAboutChanges) {
// Ask future metadata changes to be cached
return;
}
final Entity entity = this.entity;
if (entity == null || !entity.isActive()) return;
Map> entries;
synchronized (this.notNotifiedChanges) {
Map> awaitingChanges = this.notNotifiedChanges;
if (awaitingChanges.isEmpty()) return;
entries = Map.copyOf(awaitingChanges);
awaitingChanges.clear();
}
entity.sendPacketToViewersAndSelf(new EntityMetaDataPacket(entity.getEntityId(), entries));
}
public @NotNull Map> getEntries() {
Map> map = entryMap;
if (map == null) {
map = new HashMap<>();
final Metadata.Entry[] entries = this.entries;
for (int i = 0; i < entries.length; i++) {
final Metadata.Entry entry = entries[i];
if (entry != null) map.put(i, entry);
}
this.entryMap = Map.copyOf(map);
}
return map;
}
static final Map> ENTITY_META_SUPPLIER = createMetaMap();
static EntityMeta createMeta(EntityType entityType, Entity entity, MetadataHolder metadata) {
return ENTITY_META_SUPPLIER.get(entityType.name()).apply(entity, metadata);
}
private static Map> createMetaMap() {
return Map.>ofEntries(
Map.entry("minecraft:allay", AllayMeta::new),
Map.entry("minecraft:area_effect_cloud", AreaEffectCloudMeta::new),
Map.entry("minecraft:armadillo", ArmadilloMeta::new),
Map.entry("minecraft:armor_stand", ArmorStandMeta::new),
Map.entry("minecraft:arrow", ArrowMeta::new),
Map.entry("minecraft:axolotl", AxolotlMeta::new),
Map.entry("minecraft:bat", BatMeta::new),
Map.entry("minecraft:bee", BeeMeta::new),
Map.entry("minecraft:blaze", BlazeMeta::new),
Map.entry("minecraft:block_display", BlockDisplayMeta::new),
Map.entry("minecraft:boat", BoatMeta::new),
Map.entry("minecraft:bogged", BoggedMeta::new),
Map.entry("minecraft:breeze", BreezeMeta::new),
Map.entry("minecraft:breeze_wind_charge", BreezeWindChargeMeta::new),
Map.entry("minecraft:chest_boat", BoatMeta::new),
Map.entry("minecraft:camel", CamelMeta::new),
Map.entry("minecraft:cat", CatMeta::new),
Map.entry("minecraft:cave_spider", CaveSpiderMeta::new),
Map.entry("minecraft:chicken", ChickenMeta::new),
Map.entry("minecraft:cod", CodMeta::new),
Map.entry("minecraft:cow", CowMeta::new),
Map.entry("minecraft:creeper", CreeperMeta::new),
Map.entry("minecraft:dolphin", DolphinMeta::new),
Map.entry("minecraft:donkey", DonkeyMeta::new),
Map.entry("minecraft:dragon_fireball", DragonFireballMeta::new),
Map.entry("minecraft:drowned", DrownedMeta::new),
Map.entry("minecraft:elder_guardian", ElderGuardianMeta::new),
Map.entry("minecraft:end_crystal", EndCrystalMeta::new),
Map.entry("minecraft:ender_dragon", EnderDragonMeta::new),
Map.entry("minecraft:enderman", EndermanMeta::new),
Map.entry("minecraft:endermite", EndermiteMeta::new),
Map.entry("minecraft:evoker", EvokerMeta::new),
Map.entry("minecraft:evoker_fangs", EvokerFangsMeta::new),
Map.entry("minecraft:experience_orb", ExperienceOrbMeta::new),
Map.entry("minecraft:eye_of_ender", EyeOfEnderMeta::new),
Map.entry("minecraft:falling_block", FallingBlockMeta::new),
Map.entry("minecraft:firework_rocket", FireworkRocketMeta::new),
Map.entry("minecraft:fox", FoxMeta::new),
Map.entry("minecraft:frog", FrogMeta::new),
Map.entry("minecraft:ghast", GhastMeta::new),
Map.entry("minecraft:giant", GiantMeta::new),
Map.entry("minecraft:glow_item_frame", GlowItemFrameMeta::new),
Map.entry("minecraft:glow_squid", GlowSquidMeta::new),
Map.entry("minecraft:goat", GoatMeta::new),
Map.entry("minecraft:guardian", GuardianMeta::new),
Map.entry("minecraft:hoglin", HoglinMeta::new),
Map.entry("minecraft:horse", HorseMeta::new),
Map.entry("minecraft:husk", HuskMeta::new),
Map.entry("minecraft:illusioner", IllusionerMeta::new),
Map.entry("minecraft:interaction", InteractionMeta::new),
Map.entry("minecraft:iron_golem", IronGolemMeta::new),
Map.entry("minecraft:item", ItemEntityMeta::new),
Map.entry("minecraft:item_display", ItemDisplayMeta::new),
Map.entry("minecraft:item_frame", ItemFrameMeta::new),
Map.entry("minecraft:fireball", FireballMeta::new),
Map.entry("minecraft:leash_knot", LeashKnotMeta::new),
Map.entry("minecraft:lightning_bolt", LightningBoltMeta::new),
Map.entry("minecraft:llama", LlamaMeta::new),
Map.entry("minecraft:llama_spit", LlamaSpitMeta::new),
Map.entry("minecraft:magma_cube", MagmaCubeMeta::new),
Map.entry("minecraft:marker", MarkerMeta::new),
Map.entry("minecraft:minecart", MinecartMeta::new),
Map.entry("minecraft:chest_minecart", ChestMinecartMeta::new),
Map.entry("minecraft:command_block_minecart", CommandBlockMinecartMeta::new),
Map.entry("minecraft:furnace_minecart", FurnaceMinecartMeta::new),
Map.entry("minecraft:hopper_minecart", HopperMinecartMeta::new),
Map.entry("minecraft:spawner_minecart", SpawnerMinecartMeta::new),
Map.entry("minecraft:text_display", TextDisplayMeta::new),
Map.entry("minecraft:tnt_minecart", TntMinecartMeta::new),
Map.entry("minecraft:mule", MuleMeta::new),
Map.entry("minecraft:mooshroom", MooshroomMeta::new),
Map.entry("minecraft:ocelot", OcelotMeta::new),
Map.entry("minecraft:ominous_item_spawner", OminousItemSpawnerMeta::new),
Map.entry("minecraft:painting", PaintingMeta::new),
Map.entry("minecraft:panda", PandaMeta::new),
Map.entry("minecraft:parrot", ParrotMeta::new),
Map.entry("minecraft:phantom", PhantomMeta::new),
Map.entry("minecraft:pig", PigMeta::new),
Map.entry("minecraft:piglin", PiglinMeta::new),
Map.entry("minecraft:piglin_brute", PiglinBruteMeta::new),
Map.entry("minecraft:pillager", PillagerMeta::new),
Map.entry("minecraft:polar_bear", PolarBearMeta::new),
Map.entry("minecraft:tnt", PrimedTntMeta::new),
Map.entry("minecraft:pufferfish", PufferfishMeta::new),
Map.entry("minecraft:rabbit", RabbitMeta::new),
Map.entry("minecraft:ravager", RavagerMeta::new),
Map.entry("minecraft:salmon", SalmonMeta::new),
Map.entry("minecraft:sheep", SheepMeta::new),
Map.entry("minecraft:shulker", ShulkerMeta::new),
Map.entry("minecraft:shulker_bullet", ShulkerBulletMeta::new),
Map.entry("minecraft:silverfish", SilverfishMeta::new),
Map.entry("minecraft:skeleton", SkeletonMeta::new),
Map.entry("minecraft:skeleton_horse", SkeletonHorseMeta::new),
Map.entry("minecraft:slime", SlimeMeta::new),
Map.entry("minecraft:small_fireball", SmallFireballMeta::new),
Map.entry("minecraft:sniffer", SnifferMeta::new),
Map.entry("minecraft:snow_golem", SnowGolemMeta::new),
Map.entry("minecraft:snowball", SnowballMeta::new),
Map.entry("minecraft:spectral_arrow", SpectralArrowMeta::new),
Map.entry("minecraft:spider", SpiderMeta::new),
Map.entry("minecraft:squid", SquidMeta::new),
Map.entry("minecraft:stray", StrayMeta::new),
Map.entry("minecraft:strider", StriderMeta::new),
Map.entry("minecraft:tadpole", TadpoleMeta::new),
Map.entry("minecraft:egg", ThrownEggMeta::new),
Map.entry("minecraft:ender_pearl", ThrownEnderPearlMeta::new),
Map.entry("minecraft:experience_bottle", ThrownExperienceBottleMeta::new),
Map.entry("minecraft:potion", ThrownPotionMeta::new),
Map.entry("minecraft:trident", ThrownTridentMeta::new),
Map.entry("minecraft:trader_llama", TraderLlamaMeta::new),
Map.entry("minecraft:tropical_fish", TropicalFishMeta::new),
Map.entry("minecraft:turtle", TurtleMeta::new),
Map.entry("minecraft:vex", VexMeta::new),
Map.entry("minecraft:villager", VillagerMeta::new),
Map.entry("minecraft:vindicator", VindicatorMeta::new),
Map.entry("minecraft:wandering_trader", WanderingTraderMeta::new),
Map.entry("minecraft:warden", WardenMeta::new),
Map.entry("minecraft:wind_charge", WindChargeMeta::new),
Map.entry("minecraft:witch", WitchMeta::new),
Map.entry("minecraft:wither", WitherMeta::new),
Map.entry("minecraft:wither_skeleton", WitherSkeletonMeta::new),
Map.entry("minecraft:wither_skull", WitherSkullMeta::new),
Map.entry("minecraft:wolf", WolfMeta::new),
Map.entry("minecraft:zoglin", ZoglinMeta::new),
Map.entry("minecraft:zombie", ZombieMeta::new),
Map.entry("minecraft:zombie_horse", ZombieHorseMeta::new),
Map.entry("minecraft:zombie_villager", ZombieVillagerMeta::new),
Map.entry("minecraft:zombified_piglin", ZombifiedPiglinMeta::new),
Map.entry("minecraft:player", PlayerMeta::new),
Map.entry("minecraft:fishing_bobber", FishingHookMeta::new)
);
}
}