Package net.minecraftforge.event

Class ForgeEventFactory

java.lang.Object

net.minecraftforge.event.ForgeEventFactory

@Internal
public final class ForgeEventFactory
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final ModLoader	ML

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ForgeEventFactory()

Method Summary

Modifier and Type	Method	Description
static void	addPackFindersServer(Consumer<RepositorySource> consumer)
static BlockState	alterGround(LevelSimulatedReader level, RandomSource random, BlockPos pos, BlockState altered)
static SaplingGrowTreeEvent	blockGrowFeature(LevelAccessor level, RandomSource randomSource, BlockPos pos, @Nullable Holder<ConfiguredFeature<?,?>> holder)
static boolean	canCreateFluidSource(Level level, BlockPos pos, BlockState state, boolean def)
static net.minecraftforge.eventbus.api.Event.Result	canEntityDespawn(Mob entity, ServerLevelAccessor level)
static boolean	canLivingConvert(LivingEntity entity, EntityType<? extends LivingEntity> outcome, Consumer<Integer> timer)
static boolean	canMountEntity(Entity entityMounting, Entity entityBeingMounted, boolean isMounting)
static boolean	checkSpawnPlacements(EntityType<?> entityType, ServerLevelAccessor level, MobSpawnType spawnType, BlockPos pos, RandomSource random, boolean defaultResult)
static boolean	checkSpawnPosition(Mob mob, ServerLevelAccessor level, MobSpawnType spawnType)	Checks if the current position of the passed mob is valid for spawning, by firing MobSpawnEvent.PositionCheck. The default check is to perform the logical and of Mob.checkSpawnRules(net.minecraft.world.level.LevelAccessor, net.minecraft.world.entity.MobSpawnType) and Mob.checkSpawnObstruction(net.minecraft.world.level.LevelReader).
static boolean	checkSpawnPositionSpawner(Mob mob, ServerLevelAccessor level, MobSpawnType spawnType, SpawnData spawnData, BaseSpawner spawner)	Specialized variant of checkSpawnPosition(net.minecraft.world.entity.Mob, net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.entity.MobSpawnType) for spawners, as they have slightly different checks.
static boolean	doPlayerHarvestCheck(Player player, BlockState state, boolean success)
private static <E extends net.minecraftforge.eventbus.api.Event> E	fire(E e)	Post an event to the MinecraftForge.EVENT_BUS, then return the event object
static void	fireChunkTicketLevelUpdated(ServerLevel level, long chunkPos, int oldTicketLevel, int newTicketLevel, @Nullable ChunkHolder chunkHolder)
static void	fireChunkUnWatch(ServerPlayer entity, ChunkPos chunkpos, ServerLevel level)
static void	fireChunkWatch(ServerPlayer entity, LevelChunk chunk, ServerLevel level)
static BlockState	fireFluidPlaceBlockEvent(LevelAccessor level, BlockPos pos, BlockPos liquidPos, BlockState state)
static LootingLevelEvent	fireLootingLevel(LivingEntity target, @Nullable DamageSource cause, int level)
static void	firePlayerCraftingEvent(Player player, ItemStack crafted, Container craftMatrix)
static void	firePlayerItemPickupEvent(Player player, ItemEntity item, ItemStack clone)
static void	firePlayerLoadingEvent(Player player, File playerDirectory, String uuidString)
static void	firePlayerLoadingEvent(Player player, PlayerDataStorage playerFileData, String uuidString)
static void	firePlayerLoggedIn(Player player)
static void	firePlayerLoggedOut(Player player)
static void	firePlayerRespawnEvent(Player player, boolean endConquered)
static void	firePlayerSavingEvent(Player player, File playerDirectory, String uuidString)
static void	firePlayerSmeltedEvent(Player player, ItemStack smelted)
static boolean	fireSleepingLocationCheck(LivingEntity player, BlockPos sleepingLocation)
static ZombieEvent.SummonAidEvent	fireZombieSummonAid(Zombie zombie, Level level, int x, int y, int z, LivingEntity attacker, double summonChance)
static <T extends ICapabilityProvider> @Nullable CapabilityDispatcher	gatherCapabilities(Class<? extends T> type, T provider)
static <T extends ICapabilityProvider> @Nullable CapabilityDispatcher	gatherCapabilities(Class<? extends T> type, T provider, @Nullable ICapabilityProvider parent)
private static @Nullable CapabilityDispatcher	gatherCapabilities(AttachCapabilitiesEvent<?> event, @Nullable ICapabilityProvider parent)
static GatherComponentsEvent.Item	gatherItemComponentsEvent(Item item, DataComponentMap dataComponents)
static void	gatherLoginConfigTasks(Connection connection, Consumer<ConfigurationTask> add)
static float	getBreakSpeed(Player player, BlockState state, float original, BlockPos pos)
static int	getExperienceDrop(LivingEntity entity, Player attackingPlayer, int originalExperience)
static int	getItemBurnTime(@NotNull ItemStack itemStack, int burnTime, @Nullable RecipeType<?> recipeType)
static int	getMaxSpawnPackSize(Mob entity)
static boolean	getMobGriefingEvent(Level level, @Nullable Entity entity)
static Component	getPlayerDisplayName(Player player, Component username)
static Component	getPlayerTabListDisplayName(Player player)
static WeightedRandomList<MobSpawnSettings.SpawnerData>	getPotentialSpawns(LevelAccessor level, MobCategory category, BlockPos pos, WeightedRandomList<MobSpawnSettings.SpawnerData> oldList)
static void	onAdvancementEarned(Player player, AdvancementHolder holder)
static void	onAdvancementGrant(Player player, AdvancementHolder holder, AdvancementProgress advancementProgress, String criterion)
static void	onAdvancementRevoke(Player player, AdvancementHolder holder, AdvancementProgress advancementProgress, String criterion)
static boolean	onAnimalTame(Animal animal, Player tamer)
static AnvilRepairEvent	onAnvilRepair(Player player, @NotNull ItemStack output, @NotNull ItemStack left, @NotNull ItemStack right)
static int	onApplyBonemeal(@Nullable Player player, Level level, BlockPos pos, BlockState state, ItemStack stack)
static int	onArrowLoose(ItemStack stack, Level level, Player player, int charge, boolean hasAmmo)
static InteractionResultHolder<ItemStack>	onArrowNock(ItemStack item, Level level, Player player, InteractionHand hand, boolean hasAmmo)
static BabyEntitySpawnEvent	onBabySpawn(Mob parentA, Mob parentB, @Nullable AgeableMob proposedChild)
static boolean	onBlockPlace(@Nullable Entity entity, @NotNull BlockSnapshot blockSnapshot, @NotNull Direction direction)
static void	onBrewingRecipeRegister(PotionBrewing.Builder builder, FeatureFlagSet features)
static @Nullable InteractionResultHolder<ItemStack>	onBucketUse(@NotNull Player player, @NotNull Level level, @NotNull ItemStack stack, @Nullable HitResult target)
static void	onChannelRegistrationChange(Connection connection, ChannelRegistrationChangeEvent.Type changeType, HashSet<ResourceLocation> changed)
static EntityTeleportEvent.ChorusFruit	onChorusFruitTeleport(LivingEntity entity, double targetX, double targetY, double targetZ)
static void	onChunkDataLoad(ChunkAccess chunk, CompoundTag data, ChunkType status)
static void	onChunkDataSave(ChunkAccess chunk, LevelAccessor world, CompoundTag data)
static void	onChunkLoad(ChunkAccess chunk, boolean newChunk)
static void	onChunkUnload(ChunkAccess chunk)
static void	onCommandRegister(com.mojang.brigadier.CommandDispatcher<CommandSourceStack> dispatcher, Commands.CommandSelection environment, CommandBuildContext context)
static void	onConnectionStart(Connection connection)
static boolean	onCreateWorldSpawn(Level level, ServerLevelData settings)
static void	onDifficultyChange(Difficulty difficulty, Difficulty oldDifficulty)
static int	onEnchantmentLevelSet(Level level, BlockPos pos, int enchantRow, int power, ItemStack itemStack, int enchantmentLevel)
static EntityTeleportEvent.EnderPearl	onEnderPearlLand(ServerPlayer entity, double targetX, double targetY, double targetZ, ThrownEnderpearl pearlEntity, float attackDamage, HitResult hitResult)
static EntityTeleportEvent.EnderEntity	onEnderTeleport(LivingEntity entity, double targetX, double targetY, double targetZ)
static void	onEntityConstructing(Entity entity)
static boolean	onEntityDestroyBlock(LivingEntity entity, BlockPos pos, BlockState state)
static void	onEntityEnterSection(Entity entity, long packedOldPos, long packedNewPos)
static PlayerInteractEvent.EntityInteract	onEntityInteract(Player player, Entity entity, InteractionHand hand)
static PlayerInteractEvent.EntityInteractSpecific	onEntityInteractSpecific(Player player, Entity entity, InteractionHand hand, Vec3 vec3d)
static boolean	onEntityJoinLevel(Entity entity, Level level)
static boolean	onEntityJoinLevel(Entity entity, Level level, boolean loadedFromDisk)
static boolean	onEntityLeaveLevel(Entity entity, Level level)
static boolean	onEntityStruckByLightning(Entity entity, LightningBolt bolt)
static EntityTeleportEvent.TeleportCommand	onEntityTeleportCommand(Entity entity, double targetX, double targetY, double targetZ)
static EntityTeleportEvent.SpreadPlayersCommand	onEntityTeleportSpreadPlayersCommand(Entity entity, double targetX, double targetY, double targetZ)
static void	onExplosionDetonate(Level level, Explosion explosion, List<Entity> list, double diameter)
static boolean	onExplosionStart(Level level, Explosion explosion)
static @Nullable SpawnGroupData	onFinalizeSpawn(Mob mob, ServerLevelAccessor level, DifficultyInstance difficulty, MobSpawnType spawnType, @Nullable SpawnGroupData spawnData)	Vanilla calls to Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData) are replaced with calls to this method via coremod. Mods should call this method in place of calling Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData).
static MobSpawnEvent.FinalizeSpawn	onFinalizeSpawnSpawner(Mob mob, ServerLevelAccessor level, DifficultyInstance difficulty, @Nullable SpawnGroupData spawnData, @Nullable CompoundTag spawnTag, BaseSpawner spawner)	Returns the FinalizeSpawn event instance, or null if it was canceled. This is separate since mob spawners perform special finalizeSpawn handling when NBT data is present, but we still want to fire the event. This overload is also the only way to pass through a BaseSpawner instance.
static void	onGameShuttingDown()
static GrindstoneEvent.OnPlaceItem	onGrindstoneChange(@NotNull ItemStack top, @NotNull ItemStack bottom, Container outputSlot, int xp)
static int	onItemExpire(ItemEntity entity, @NotNull ItemStack item)
static int	onItemPickup(ItemEntity entityItem, Player player)
static boolean	onItemStackedOn(ItemStack carriedItem, ItemStack stackedOnItem, Slot slot, ClickAction action, Player player, SlotAccess carriedSlotAccess)
static ItemTooltipEvent	onItemTooltip(ItemStack itemStack, @Nullable Player entityPlayer, List<Component> list, TooltipFlag flags)
static ItemStack	onItemUseFinish(LivingEntity entity, ItemStack item, int duration, ItemStack result)
static int	onItemUseStart(LivingEntity entity, ItemStack item, int duration)
static int	onItemUseTick(LivingEntity entity, ItemStack item, int duration)
static PlayerInteractEvent.LeftClickBlock	onLeftClickBlock(Player player, BlockPos pos, Direction face, ServerboundPlayerActionPacket.Action action)
static PlayerInteractEvent.LeftClickBlock	onLeftClickBlockHold(Player player, BlockPos pos, Direction face)
static void	onLeftClickEmpty(Player player)
static void	onLevelLoad(Level level)
static void	onLevelSave(Level level)
static void	onLevelUnload(Level level)
static boolean	onLivingAttackEntity(LivingEntity entity, DamageSource src, float amount)
static LivingBreatheEvent	onLivingBreathe(LivingEntity entity, boolean canBreathe, int consumeAirAmount, int refillAirAmount, boolean canRefillAir)
static LivingChangeTargetEvent	onLivingChangeTargetBehavior(LivingEntity entity, LivingEntity originalTarget)
static LivingChangeTargetEvent	onLivingChangeTargetMob(LivingEntity entity, LivingEntity originalTarget)
static void	onLivingConvert(LivingEntity entity, LivingEntity outcome)
static boolean	onLivingDeath(LivingEntity entity, DamageSource src)
static boolean	onLivingDrops(LivingEntity entity, DamageSource source, Collection<ItemEntity> drops, boolean recentlyHit)
static LivingDrownEvent	onLivingDrown(LivingEntity entity, boolean isDrowning, float damageAmount, int bubbleCount)
static boolean	onLivingEffectAdd(LivingEntity entity, MobEffectInstance oldEffect, MobEffectInstance newEffect, Entity source)
static MobEffectEvent.Applicable	onLivingEffectCanApply(LivingEntity entity, MobEffectInstance effect)
static boolean	onLivingEffectExpire(LivingEntity entity, MobEffectInstance effect)
static boolean	onLivingEffectRemove(LivingEntity entity, MobEffect effect)
static boolean	onLivingEffectRemove(LivingEntity entity, MobEffectInstance effect)
static void	onLivingEquipmentChange(LivingEntity entity, EquipmentSlot slot, ItemStack from, ItemStack to)
static LivingFallEvent	onLivingFall(LivingEntity entity, float distance, float damageMultiplier)
static float	onLivingHeal(LivingEntity entity, float amount)
static LivingKnockBackEvent	onLivingKnockBack(LivingEntity target, float strength, double ratioX, double ratioZ)
static LivingSwapItemsEvent.Hands	onLivingSwapHandItems(LivingEntity entity)
static boolean	onLivingTick(LivingEntity entity)
static @Nullable LootTable	onLoadLootTable(ResourceLocation name, LootTable table)
static boolean	onMultiBlockPlace(@Nullable Entity entity, List<BlockSnapshot> blockSnapshots, Direction direction)
static BlockEvent.NeighborNotifyEvent	onNeighborNotify(Level level, BlockPos pos, BlockState state, EnumSet<Direction> notifiedSides, boolean forceRedstoneUpdate)
static NoteBlockEvent.Play	onNotePlay(Level world, BlockPos pos, BlockState state, int note, NoteBlockInstrument instrument)
static boolean	onPermissionChanged(com.mojang.authlib.GameProfile gameProfile, int newLevel, PlayerList playerList)
static boolean	onPistonMovePost(Level level, BlockPos pos, Direction direction, boolean extending)
static boolean	onPistonMovePre(Level level, BlockPos pos, Direction direction, boolean extending)
static void	onPlayerBrewedPotion(Player player, ItemStack stack)
static void	onPlayerChangedDimension(Player player, ResourceKey<Level> fromDim, ResourceKey<Level> toDim)
static void	onPlayerClone(Player player, Player oldPlayer, boolean wasDeath)
static void	onPlayerCloseContainer(ServerPlayer player, AbstractContainerMenu menu)
static void	onPlayerDestroyItem(Player player, @NotNull ItemStack stack, @Nullable InteractionHand hand)
static void	onPlayerDestroyItem(Player player, @NotNull ItemStack stack, @Nullable EquipmentSlot slot)
static void	onPlayerFall(Player player, float distance, float multiplier)
static ItemFishedEvent	onPlayerFishedItem(List<ItemStack> stacks, int rodDamage, FishingHook hook)
static PlayerXpEvent.LevelChange	onPlayerLevelChange(Player player, int levels)
static void	onPlayerOpenContainer(ServerPlayer player, AbstractContainerMenu menu)
static boolean	onPlayerPickupXp(Player player, ExperienceOrb orb)
static void	onPlayerPostTick(Player player)
static void	onPlayerPreTick(Player player)
static Player.BedSleepingProblem	onPlayerSleepInBed(Player player, Optional<BlockPos> pos)
static PlayerSpawnPhantomsEvent	onPlayerSpawnPhantom(Player player, int phantomsToSpawn)
static boolean	onPlayerSpawnSet(Player player, ResourceKey<Level> levelKey, BlockPos pos, boolean forced)
static void	onPlayerTradeWithVillager(Player player, MerchantOffer offer, AbstractVillager villager)
static void	onPlayerWakeup(Player player, boolean wakeImmediately, boolean updateLevel)
static PlayerXpEvent.XpChange	onPlayerXpChange(Player player, int xp)
static PlayLevelSoundEvent.AtEntity	onPlaySoundAtEntity(Entity entity, Holder<SoundEvent> name, SoundSource category, float volume, float pitch)
static PlayLevelSoundEvent.AtPosition	onPlaySoundAtPosition(Level level, double x, double y, double z, Holder<SoundEvent> name, SoundSource category, float volume, float pitch)
static void	onPostClientTick()
static void	onPostLevelTick(Level level, BooleanSupplier haveTime)
static void	onPostServerTick(BooleanSupplier haveTime, MinecraftServer server)
static boolean	onPotionAttemptBrew(NonNullList<ItemStack> stacks)
static void	onPotionBrewed(NonNullList<ItemStack> brewingItemStacks)
static void	onPreClientTick()
static void	onPreLevelTick(Level level, BooleanSupplier haveTime)
static void	onPreServerTick(BooleanSupplier haveTime, MinecraftServer server)
static boolean	onProjectileImpact(Projectile projectile, HitResult ray)
static ProjectileImpactEvent.ImpactResult	onProjectileImpactResult(Projectile projectile, HitResult ray)
static List<PreparableReloadListener>	onResourceReload(ReloadableServerResources serverResources, RegistryAccess registryAccess)
static PlayerInteractEvent.RightClickBlock	onRightClickBlock(Player player, InteractionHand hand, BlockPos pos, BlockHitResult hitVec)
static void	onRightClickEmpty(Player player, InteractionHand hand)
static PlayerInteractEvent.RightClickItem	onRightClickItem(Player player, InteractionHand hand)
static ShieldBlockEvent	onShieldBlock(LivingEntity blocker, DamageSource source, float blocked)
static long	onSleepFinished(ServerLevel level, long newTime, long minTime)
static boolean	onSleepingTimeCheck(Player player, Optional<BlockPos> sleepingLocation)
static void	onStartEntityTracking(Entity entity, Player player)
static void	onStopEntityTracking(Entity entity, Player player)
static void	onTagsUpdated(RegistryAccess registryAccess, boolean fromClientPacket, boolean isIntegratedServerConnection)
static @Nullable BlockState	onToolUse(BlockState originalState, UseOnContext context, ToolAction toolAction, boolean simulate)
static boolean	onTravelToDimension(Entity entity, ResourceKey<Level> dimension)
static Optional<PortalShape>	onTrySpawnPortal(LevelAccessor level, BlockPos pos, Optional<PortalShape> size)
static boolean	onUseItemStop(LivingEntity entity, ItemStack item, int duration)
static boolean	onVanillaGameEvent(Level level, Holder<GameEvent> vanillaEvent, Vec3 pos, GameEvent.Context context)
private static boolean	post(net.minecraftforge.eventbus.api.Event e)	Post an event to the MinecraftForge.EVENT_BUS
private static <T extends net.minecraftforge.eventbus.api.Event & IModBusEvent> void	postModBus(T e)	Post an event to the ModLoader.get() event bus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ML

private static final ModLoader ML

Constructor Details

ForgeEventFactory

private ForgeEventFactory()

Method Details

post

private static boolean post(net.minecraftforge.eventbus.api.Event e)

Post an event to the MinecraftForge.EVENT_BUS

Returns:

true if the event is Cancelable and has been canceled

fire

private static <E extends net.minecraftforge.eventbus.api.Event>
E fire(E e)

Post an event to the MinecraftForge.EVENT_BUS, then return the event object

Returns:

the event object passed in and possibly modified by listeners

postModBus

private static <T extends net.minecraftforge.eventbus.api.Event & IModBusEvent>
void postModBus(T e)

Post an event to the ModLoader.get() event bus

onMultiBlockPlace

public static boolean onMultiBlockPlace(@Nullable
 @Nullable Entity entity,
 List<BlockSnapshot> blockSnapshots,
 Direction direction)

onBlockPlace

public static boolean onBlockPlace(@Nullable
 @Nullable Entity entity,
 @NotNull
 @NotNull BlockSnapshot blockSnapshot,
 @NotNull
 @NotNull Direction direction)

onNeighborNotify

public static BlockEvent.NeighborNotifyEvent onNeighborNotify(Level level,
 BlockPos pos,
 BlockState state,
 EnumSet<Direction> notifiedSides,
 boolean forceRedstoneUpdate)

doPlayerHarvestCheck

public static boolean doPlayerHarvestCheck(Player player,
 BlockState state,
 boolean success)

getBreakSpeed

public static float getBreakSpeed(Player player,
 BlockState state,
 float original,
 BlockPos pos)

onPlayerDestroyItem

public static void onPlayerDestroyItem(Player player,
 @NotNull
 @NotNull ItemStack stack,
 @Nullable
 @Nullable InteractionHand hand)

onPlayerDestroyItem

public static void onPlayerDestroyItem(Player player,
 @NotNull
 @NotNull ItemStack stack,
 @Nullable
 @Nullable EquipmentSlot slot)

checkSpawnPlacements

public static boolean checkSpawnPlacements(EntityType<?> entityType,
 ServerLevelAccessor level,
 MobSpawnType spawnType,
 BlockPos pos,
 RandomSource random,
 boolean defaultResult)

checkSpawnPosition

public static boolean checkSpawnPosition(Mob mob,
 ServerLevelAccessor level,
 MobSpawnType spawnType)

Checks if the current position of the passed mob is valid for spawning, by firing MobSpawnEvent.PositionCheck.
The default check is to perform the logical and of Mob.checkSpawnRules(net.minecraft.world.level.LevelAccessor, net.minecraft.world.entity.MobSpawnType) and Mob.checkSpawnObstruction(net.minecraft.world.level.LevelReader).

Parameters:

mob - The mob being spawned.

level - The level the mob will be added to, if successful.

spawnType - The spawn type of the spawn.

Returns:

True, if the position is valid, as determined by the contract of MobSpawnEvent.PositionCheck.

See Also:

• MobSpawnEvent.PositionCheck

checkSpawnPositionSpawner

public static boolean checkSpawnPositionSpawner(Mob mob,
 ServerLevelAccessor level,
 MobSpawnType spawnType,
 SpawnData spawnData,
 BaseSpawner spawner)

Specialized variant of checkSpawnPosition(net.minecraft.world.entity.Mob, net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.entity.MobSpawnType) for spawners, as they have slightly different checks.

See Also:

• invalid reference

  #CheckSpawnPosition

Implementation Note:

See in-line comments about custom spawn rules.

onFinalizeSpawn

@Nullable
public static @Nullable SpawnGroupData onFinalizeSpawn(Mob mob,
 ServerLevelAccessor level,
 DifficultyInstance difficulty,
 MobSpawnType spawnType,
 @Nullable
 @Nullable SpawnGroupData spawnData)

Vanilla calls to Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData) are replaced with calls to this method via coremod.
Mods should call this method in place of calling Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData). Super calls (from within overrides) should not be wrapped.

When interfacing with this event, write all code as normal, and replace the call to Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData) with a call to this method.

As an example, the following code block:

 var zombie = new Zombie(level);
 zombie.finalizeSpawn(level, difficulty, spawnType, spawnData, spawnTag);
 level.tryAddFreshEntityWithPassengers(zombie);
 if (zombie.isAddedToWorld()) {
     // Do stuff with your new zombie
 }
 

Would become:

 var zombie = new Zombie(level);
 ForgeEventFactory.onFinalizeSpawn(zombie, level, difficulty, spawnType, spawnData, spawnTag);
 level.tryAddFreshEntityWithPassengers(zombie);
 if (zombie.isAddedToWorld()) {
     // Do stuff with your new zombie
 }
 

The only code that changes is the Mob.finalizeSpawn(net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData) call.

Returns:

The SpawnGroupData from this event, or null if it was canceled. The return value of this method has no bearing on if the entity will be spawned.

See Also:

• MobSpawnEvent.FinalizeSpawn
• invalid reference

  Mob#finalizeSpawn(ServerLevelAccessor, DifficultyInstance, MobSpawnType, SpawnGroupData, CompoundTag)

API Note:

Callers do not need to check if the entity's spawn was cancelled, as the spawn will be blocked by Forge.

Implementation Note:

Changes to the signature of this method must be reflected in the method redirector coremod.

onFinalizeSpawnSpawner

@Nullable
public static MobSpawnEvent.FinalizeSpawn onFinalizeSpawnSpawner(Mob mob,
 ServerLevelAccessor level,
 DifficultyInstance difficulty,
 @Nullable
 @Nullable SpawnGroupData spawnData,
 @Nullable
 @Nullable CompoundTag spawnTag,
 BaseSpawner spawner)

Returns the FinalizeSpawn event instance, or null if it was canceled.
This is separate since mob spawners perform special finalizeSpawn handling when NBT data is present, but we still want to fire the event.
This overload is also the only way to pass through a BaseSpawner instance.

See Also:

• onFinalizeSpawn(net.minecraft.world.entity.Mob, net.minecraft.world.level.ServerLevelAccessor, net.minecraft.world.DifficultyInstance, net.minecraft.world.entity.MobSpawnType, net.minecraft.world.entity.SpawnGroupData)

canEntityDespawn

public static net.minecraftforge.eventbus.api.Event.Result canEntityDespawn(Mob entity,
 ServerLevelAccessor level)

getItemBurnTime

public static int getItemBurnTime(@NotNull
 @NotNull ItemStack itemStack,
 int burnTime,
 @Nullable
 @Nullable RecipeType<?> recipeType)

getExperienceDrop

public static int getExperienceDrop(LivingEntity entity,
 Player attackingPlayer,
 int originalExperience)

getMaxSpawnPackSize

public static int getMaxSpawnPackSize(Mob entity)

getPlayerDisplayName

public static Component getPlayerDisplayName(Player player,
 Component username)

getPlayerTabListDisplayName

public static Component getPlayerTabListDisplayName(Player player)

fireFluidPlaceBlockEvent

public static BlockState fireFluidPlaceBlockEvent(LevelAccessor level,
 BlockPos pos,
 BlockPos liquidPos,
 BlockState state)

onItemTooltip

public static ItemTooltipEvent onItemTooltip(ItemStack itemStack,
 @Nullable
 @Nullable Player entityPlayer,
 List<Component> list,
 TooltipFlag flags)

fireZombieSummonAid

public static ZombieEvent.SummonAidEvent fireZombieSummonAid(Zombie zombie,
 Level level,
 int x,
 int y,
 int z,
 LivingEntity attacker,
 double summonChance)

onEntityStruckByLightning

public static boolean onEntityStruckByLightning(Entity entity,
 LightningBolt bolt)

onItemUseStart

public static int onItemUseStart(LivingEntity entity,
 ItemStack item,
 int duration)

onItemUseTick

public static int onItemUseTick(LivingEntity entity,
 ItemStack item,
 int duration)

onUseItemStop

public static boolean onUseItemStop(LivingEntity entity,
 ItemStack item,
 int duration)

onItemUseFinish

public static ItemStack onItemUseFinish(LivingEntity entity,
 ItemStack item,
 int duration,
 ItemStack result)

onStartEntityTracking

public static void onStartEntityTracking(Entity entity,
 Player player)

onStopEntityTracking

public static void onStopEntityTracking(Entity entity,
 Player player)

firePlayerLoadingEvent

public static void firePlayerLoadingEvent(Player player,
 File playerDirectory,
 String uuidString)

firePlayerSavingEvent

public static void firePlayerSavingEvent(Player player,
 File playerDirectory,
 String uuidString)

firePlayerLoadingEvent

public static void firePlayerLoadingEvent(Player player,
 PlayerDataStorage playerFileData,
 String uuidString)

onToolUse

@Nullable
public static @Nullable BlockState onToolUse(BlockState originalState,
 UseOnContext context,
 ToolAction toolAction,
 boolean simulate)

onApplyBonemeal

public static int onApplyBonemeal(@Nullable
 @Nullable Player player,
 Level level,
 BlockPos pos,
 BlockState state,
 ItemStack stack)

onBucketUse

@Nullable
public static @Nullable InteractionResultHolder<ItemStack> onBucketUse(@NotNull
 @NotNull Player player,
 @NotNull
 @NotNull Level level,
 @NotNull
 @NotNull ItemStack stack,
 @Nullable
 @Nullable HitResult target)

onPlaySoundAtEntity

public static PlayLevelSoundEvent.AtEntity onPlaySoundAtEntity(Entity entity,
 Holder<SoundEvent> name,
 SoundSource category,
 float volume,
 float pitch)

onPlaySoundAtPosition

public static PlayLevelSoundEvent.AtPosition onPlaySoundAtPosition(Level level,
 double x,
 double y,
 double z,
 Holder<SoundEvent> name,
 SoundSource category,
 float volume,
 float pitch)

onItemExpire

public static int onItemExpire(ItemEntity entity,
 @NotNull
 @NotNull ItemStack item)

onItemPickup

public static int onItemPickup(ItemEntity entityItem,
 Player player)

canMountEntity

public static boolean canMountEntity(Entity entityMounting,
 Entity entityBeingMounted,
 boolean isMounting)

onAnimalTame

public static boolean onAnimalTame(Animal animal,
 Player tamer)

onPlayerPickupXp

public static boolean onPlayerPickupXp(Player player,
 ExperienceOrb orb)

onPlayerSleepInBed

public static Player.BedSleepingProblem onPlayerSleepInBed(Player player,
 Optional<BlockPos> pos)

onPlayerWakeup

public static void onPlayerWakeup(Player player,
 boolean wakeImmediately,
 boolean updateLevel)

onPlayerFall

public static void onPlayerFall(Player player,
 float distance,
 float multiplier)

onPlayerSpawnSet

public static boolean onPlayerSpawnSet(Player player,
 ResourceKey<Level> levelKey,
 BlockPos pos,
 boolean forced)

onPlayerSpawnPhantom

public static PlayerSpawnPhantomsEvent onPlayerSpawnPhantom(Player player,
 int phantomsToSpawn)

onPlayerClone

public static void onPlayerClone(Player player,
 Player oldPlayer,
 boolean wasDeath)

onExplosionStart

public static boolean onExplosionStart(Level level,
 Explosion explosion)

onExplosionDetonate

public static void onExplosionDetonate(Level level,
 Explosion explosion,
 List<Entity> list,
 double diameter)

onCreateWorldSpawn

public static boolean onCreateWorldSpawn(Level level,
 ServerLevelData settings)

onLivingHeal

public static float onLivingHeal(LivingEntity entity,
 float amount)

onPotionAttemptBrew

public static boolean onPotionAttemptBrew(NonNullList<ItemStack> stacks)

onPotionBrewed

public static void onPotionBrewed(NonNullList<ItemStack> brewingItemStacks)

onPlayerBrewedPotion

public static void onPlayerBrewedPotion(Player player,
 ItemStack stack)

gatherCapabilities

@Nullable
public static <T extends ICapabilityProvider>
@Nullable CapabilityDispatcher gatherCapabilities(Class<? extends T> type,
 T provider)

gatherCapabilities

@Nullable
public static <T extends ICapabilityProvider>
@Nullable CapabilityDispatcher gatherCapabilities(Class<? extends T> type,
 T provider,
 @Nullable
 @Nullable ICapabilityProvider parent)

gatherCapabilities

@Nullable
private static @Nullable CapabilityDispatcher gatherCapabilities(AttachCapabilitiesEvent<?> event,
 @Nullable
 @Nullable ICapabilityProvider parent)

fireSleepingLocationCheck

public static boolean fireSleepingLocationCheck(LivingEntity player,
 BlockPos sleepingLocation)

onSleepingTimeCheck

public static boolean onSleepingTimeCheck(Player player,
 Optional<BlockPos> sleepingLocation)

onArrowNock

public static InteractionResultHolder<ItemStack> onArrowNock(ItemStack item,
 Level level,
 Player player,
 InteractionHand hand,
 boolean hasAmmo)

onArrowLoose

public static int onArrowLoose(ItemStack stack,
 Level level,
 Player player,
 int charge,
 boolean hasAmmo)

onProjectileImpactResult

public static ProjectileImpactEvent.ImpactResult onProjectileImpactResult(Projectile projectile,
 HitResult ray)

onProjectileImpact

public static boolean onProjectileImpact(Projectile projectile,
 HitResult ray)

onLoadLootTable

@Nullable
public static @Nullable LootTable onLoadLootTable(ResourceLocation name,
 LootTable table)

canCreateFluidSource

public static boolean canCreateFluidSource(Level level,
 BlockPos pos,
 BlockState state,
 boolean def)

onTrySpawnPortal

public static Optional<PortalShape> onTrySpawnPortal(LevelAccessor level,
 BlockPos pos,
 Optional<PortalShape> size)

onEnchantmentLevelSet

public static int onEnchantmentLevelSet(Level level,
 BlockPos pos,
 int enchantRow,
 int power,
 ItemStack itemStack,
 int enchantmentLevel)

onEntityDestroyBlock

public static boolean onEntityDestroyBlock(LivingEntity entity,
 BlockPos pos,
 BlockState state)

getMobGriefingEvent

public static boolean getMobGriefingEvent(Level level,
 @Nullable
 @Nullable Entity entity)

blockGrowFeature

public static SaplingGrowTreeEvent blockGrowFeature(LevelAccessor level,
 RandomSource randomSource,
 BlockPos pos,
 @Nullable
 @Nullable Holder<ConfiguredFeature<?,?>> holder)

alterGround

public static BlockState alterGround(LevelSimulatedReader level,
 RandomSource random,
 BlockPos pos,
 BlockState altered)

fireChunkTicketLevelUpdated

public static void fireChunkTicketLevelUpdated(ServerLevel level,
 long chunkPos,
 int oldTicketLevel,
 int newTicketLevel,
 @Nullable
 @Nullable ChunkHolder chunkHolder)

fireChunkWatch

public static void fireChunkWatch(ServerPlayer entity,
 LevelChunk chunk,
 ServerLevel level)

fireChunkUnWatch

public static void fireChunkUnWatch(ServerPlayer entity,
 ChunkPos chunkpos,
 ServerLevel level)

onPistonMovePre

public static boolean onPistonMovePre(Level level,
 BlockPos pos,
 Direction direction,
 boolean extending)

onPistonMovePost

public static boolean onPistonMovePost(Level level,
 BlockPos pos,
 Direction direction,
 boolean extending)

onSleepFinished

public static long onSleepFinished(ServerLevel level,
 long newTime,
 long minTime)

onResourceReload

public static List<PreparableReloadListener> onResourceReload(ReloadableServerResources serverResources,
 RegistryAccess registryAccess)

onCommandRegister

public static void onCommandRegister(com.mojang.brigadier.CommandDispatcher<CommandSourceStack> dispatcher,
 Commands.CommandSelection environment,
 CommandBuildContext context)

canLivingConvert

public static boolean canLivingConvert(LivingEntity entity,
 EntityType<? extends LivingEntity> outcome,
 Consumer<Integer> timer)

onLivingConvert

public static void onLivingConvert(LivingEntity entity,
 LivingEntity outcome)

onBabySpawn

public static BabyEntitySpawnEvent onBabySpawn(Mob parentA,
 Mob parentB,
 @Nullable
 @Nullable AgeableMob proposedChild)

onEntityTeleportCommand

public static EntityTeleportEvent.TeleportCommand onEntityTeleportCommand(Entity entity,
 double targetX,
 double targetY,
 double targetZ)

onEntityTeleportSpreadPlayersCommand

public static EntityTeleportEvent.SpreadPlayersCommand onEntityTeleportSpreadPlayersCommand(Entity entity,
 double targetX,
 double targetY,
 double targetZ)

onEnderTeleport

public static EntityTeleportEvent.EnderEntity onEnderTeleport(LivingEntity entity,
 double targetX,
 double targetY,
 double targetZ)

onEnderPearlLand

public static EntityTeleportEvent.EnderPearl onEnderPearlLand(ServerPlayer entity,
 double targetX,
 double targetY,
 double targetZ,
 ThrownEnderpearl pearlEntity,
 float attackDamage,
 HitResult hitResult)

onChorusFruitTeleport

public static EntityTeleportEvent.ChorusFruit onChorusFruitTeleport(LivingEntity entity,
 double targetX,
 double targetY,
 double targetZ)

onPermissionChanged

public static boolean onPermissionChanged(com.mojang.authlib.GameProfile gameProfile,
 int newLevel,
 PlayerList playerList)

onPlayerChangedDimension

public static void onPlayerChangedDimension(Player player,
 ResourceKey<Level> fromDim,
 ResourceKey<Level> toDim)

firePlayerLoggedIn

public static void firePlayerLoggedIn(Player player)

firePlayerLoggedOut

public static void firePlayerLoggedOut(Player player)

firePlayerRespawnEvent

public static void firePlayerRespawnEvent(Player player,
 boolean endConquered)

firePlayerItemPickupEvent

public static void firePlayerItemPickupEvent(Player player,
 ItemEntity item,
 ItemStack clone)

firePlayerCraftingEvent

public static void firePlayerCraftingEvent(Player player,
 ItemStack crafted,
 Container craftMatrix)

firePlayerSmeltedEvent

public static void firePlayerSmeltedEvent(Player player,
 ItemStack smelted)

onPlayerPreTick

public static void onPlayerPreTick(Player player)

onPlayerPostTick

public static void onPlayerPostTick(Player player)

onPreLevelTick

public static void onPreLevelTick(Level level,
 BooleanSupplier haveTime)

onPostLevelTick

public static void onPostLevelTick(Level level,
 BooleanSupplier haveTime)

onPreClientTick

public static void onPreClientTick()

onPostClientTick

public static void onPostClientTick()

onPreServerTick

public static void onPreServerTick(BooleanSupplier haveTime,
 MinecraftServer server)

onPostServerTick

public static void onPostServerTick(BooleanSupplier haveTime,
 MinecraftServer server)

getPotentialSpawns

public static WeightedRandomList<MobSpawnSettings.SpawnerData> getPotentialSpawns(LevelAccessor level,
 MobCategory category,
 BlockPos pos,
 WeightedRandomList<MobSpawnSettings.SpawnerData> oldList)

onAdvancementEarned

public static void onAdvancementEarned(Player player,
 AdvancementHolder holder)

onAdvancementGrant

public static void onAdvancementGrant(Player player,
 AdvancementHolder holder,
 AdvancementProgress advancementProgress,
 String criterion)

onAdvancementRevoke

public static void onAdvancementRevoke(Player player,
 AdvancementHolder holder,
 AdvancementProgress advancementProgress,
 String criterion)

onEntityConstructing

public static void onEntityConstructing(Entity entity)

onPlayerOpenContainer

public static void onPlayerOpenContainer(ServerPlayer player,
 AbstractContainerMenu menu)

onPlayerCloseContainer

public static void onPlayerCloseContainer(ServerPlayer player,
 AbstractContainerMenu menu)

onTravelToDimension

public static boolean onTravelToDimension(Entity entity,
 ResourceKey<Level> dimension)

onChunkUnload

public static void onChunkUnload(ChunkAccess chunk)

onChunkLoad

public static void onChunkLoad(ChunkAccess chunk,
 boolean newChunk)

onLevelUnload

public static void onLevelUnload(Level level)

onLevelLoad

public static void onLevelLoad(Level level)

onLevelSave

public static void onLevelSave(Level level)

onChunkDataSave

public static void onChunkDataSave(ChunkAccess chunk,
 LevelAccessor world,
 CompoundTag data)

onChunkDataLoad

public static void onChunkDataLoad(ChunkAccess chunk,
 CompoundTag data,
 ChunkType status)

onGameShuttingDown

public static void onGameShuttingDown()

gatherLoginConfigTasks

public static void gatherLoginConfigTasks(Connection connection,
 Consumer<ConfigurationTask> add)

onConnectionStart

public static void onConnectionStart(Connection connection)

onChannelRegistrationChange

public static void onChannelRegistrationChange(Connection connection,
 ChannelRegistrationChangeEvent.Type changeType,
 HashSet<ResourceLocation> changed)

onLivingSwapHandItems

public static LivingSwapItemsEvent.Hands onLivingSwapHandItems(LivingEntity entity)

onShieldBlock

public static ShieldBlockEvent onShieldBlock(LivingEntity blocker,
 DamageSource source,
 float blocked)

onEntityEnterSection

public static void onEntityEnterSection(Entity entity,
 long packedOldPos,
 long packedNewPos)

onLivingTick

public static boolean onLivingTick(LivingEntity entity)

onLivingFall

public static LivingFallEvent onLivingFall(LivingEntity entity,
 float distance,
 float damageMultiplier)

onLivingBreathe

public static LivingBreatheEvent onLivingBreathe(LivingEntity entity,
 boolean canBreathe,
 int consumeAirAmount,
 int refillAirAmount,
 boolean canRefillAir)

onLivingDrown

public static LivingDrownEvent onLivingDrown(LivingEntity entity,
 boolean isDrowning,
 float damageAmount,
 int bubbleCount)

onLivingKnockBack

public static LivingKnockBackEvent onLivingKnockBack(LivingEntity target,
 float strength,
 double ratioX,
 double ratioZ)

onLivingDeath

public static boolean onLivingDeath(LivingEntity entity,
 DamageSource src)

onLivingDrops

public static boolean onLivingDrops(LivingEntity entity,
 DamageSource source,
 Collection<ItemEntity> drops,
 boolean recentlyHit)

onLeftClickEmpty

public static void onLeftClickEmpty(Player player)

onLeftClickBlock

public static PlayerInteractEvent.LeftClickBlock onLeftClickBlock(Player player,
 BlockPos pos,
 Direction face,
 ServerboundPlayerActionPacket.Action action)

onLeftClickBlockHold

public static PlayerInteractEvent.LeftClickBlock onLeftClickBlockHold(Player player,
 BlockPos pos,
 Direction face)

onRightClickBlock

public static PlayerInteractEvent.RightClickBlock onRightClickBlock(Player player,
 InteractionHand hand,
 BlockPos pos,
 BlockHitResult hitVec)

onRightClickItem

public static PlayerInteractEvent.RightClickItem onRightClickItem(Player player,
 InteractionHand hand)

onEntityInteract

public static PlayerInteractEvent.EntityInteract onEntityInteract(Player player,
 Entity entity,
 InteractionHand hand)

onEntityInteractSpecific

public static PlayerInteractEvent.EntityInteractSpecific onEntityInteractSpecific(Player player,
 Entity entity,
 InteractionHand hand,
 Vec3 vec3d)

onRightClickEmpty

public static void onRightClickEmpty(Player player,
 InteractionHand hand)

addPackFindersServer

public static void addPackFindersServer(Consumer<RepositorySource> consumer)

onEntityJoinLevel

public static boolean onEntityJoinLevel(Entity entity,
 Level level)

onEntityJoinLevel

public static boolean onEntityJoinLevel(Entity entity,
 Level level,
 boolean loadedFromDisk)

onEntityLeaveLevel

public static boolean onEntityLeaveLevel(Entity entity,
 Level level)

onDifficultyChange

public static void onDifficultyChange(Difficulty difficulty,
 Difficulty oldDifficulty)

onTagsUpdated

public static void onTagsUpdated(RegistryAccess registryAccess,
 boolean fromClientPacket,
 boolean isIntegratedServerConnection)

onLivingAttackEntity

public static boolean onLivingAttackEntity(LivingEntity entity,
 DamageSource src,
 float amount)

onVanillaGameEvent

public static boolean onVanillaGameEvent(Level level,
 Holder<GameEvent> vanillaEvent,
 Vec3 pos,
 GameEvent.Context context)

onLivingEffectExpire

public static boolean onLivingEffectExpire(LivingEntity entity,
 MobEffectInstance effect)

onLivingEffectAdd

public static boolean onLivingEffectAdd(LivingEntity entity,
 MobEffectInstance oldEffect,
 MobEffectInstance newEffect,
 Entity source)

onLivingEffectRemove

public static boolean onLivingEffectRemove(LivingEntity entity,
 MobEffect effect)

onLivingEffectRemove

public static boolean onLivingEffectRemove(LivingEntity entity,
 MobEffectInstance effect)

onLivingEffectCanApply

public static MobEffectEvent.Applicable onLivingEffectCanApply(LivingEntity entity,
 MobEffectInstance effect)

onLivingEquipmentChange

public static void onLivingEquipmentChange(LivingEntity entity,
 EquipmentSlot slot,
 ItemStack from,
 ItemStack to)

onLivingChangeTargetMob

public static LivingChangeTargetEvent onLivingChangeTargetMob(LivingEntity entity,
 LivingEntity originalTarget)

onLivingChangeTargetBehavior

public static LivingChangeTargetEvent onLivingChangeTargetBehavior(LivingEntity entity,
 LivingEntity originalTarget)

onPlayerFishedItem

public static ItemFishedEvent onPlayerFishedItem(List<ItemStack> stacks,
 int rodDamage,
 FishingHook hook)

onPlayerXpChange

public static PlayerXpEvent.XpChange onPlayerXpChange(Player player,
 int xp)

onPlayerLevelChange

public static PlayerXpEvent.LevelChange onPlayerLevelChange(Player player,
 int levels)

onGrindstoneChange

public static GrindstoneEvent.OnPlaceItem onGrindstoneChange(@NotNull
 @NotNull ItemStack top,
 @NotNull
 @NotNull ItemStack bottom,
 Container outputSlot,
 int xp)

onBrewingRecipeRegister

public static void onBrewingRecipeRegister(PotionBrewing.Builder builder,
 FeatureFlagSet features)

onItemStackedOn

public static boolean onItemStackedOn(ItemStack carriedItem,
 ItemStack stackedOnItem,
 Slot slot,
 ClickAction action,
 Player player,
 SlotAccess carriedSlotAccess)

onNotePlay

public static NoteBlockEvent.Play onNotePlay(Level world,
 BlockPos pos,
 BlockState state,
 int note,
 NoteBlockInstrument instrument)

onAnvilRepair

public static AnvilRepairEvent onAnvilRepair(Player player,
 @NotNull
 @NotNull ItemStack output,
 @NotNull
 @NotNull ItemStack left,
 @NotNull
 @NotNull ItemStack right)

onPlayerTradeWithVillager

public static void onPlayerTradeWithVillager(Player player,
 MerchantOffer offer,
 AbstractVillager villager)

gatherItemComponentsEvent

public static GatherComponentsEvent.Item gatherItemComponentsEvent(Item item,
 DataComponentMap dataComponents)

fireLootingLevel

public static LootingLevelEvent fireLootingLevel(LivingEntity target,
 @Nullable
 @Nullable DamageSource cause,
 int level)