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PaperMC/patches/server/0246-Improve-death-events.patch
Lulu13022002 294347bee2
[ci skip] Cleanup events (#10202)
2024-02-01 10:15:57 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <mail@moep.tv>
Date: Tue, 21 Aug 2018 01:39:35 +0100
Subject: [PATCH] Improve death events
This adds the ability to cancel the death events and to modify the sound
an entity makes when dying. (In cases were no sound should it will be
called with shouldPlaySound set to false allowing unsilencing of silent
entities)
It makes handling of entity deaths a lot nicer as you no longer need
to listen on the damage event and calculate if the entity dies yourself
to cancel the death which has the benefit of also receiving the dropped
items and experience which is otherwise only properly possible by using
internal code.
== AT ==
public net.minecraft.world.entity.LivingEntity getDeathSound()Lnet/minecraft/sounds/SoundEvent;
public net.minecraft.world.entity.LivingEntity getSoundVolume()F
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 33108a55c1cc305d44238d0862755af874f19395..1042b19c906e40d4a4e9ef76d69228149e84e3c5 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -248,6 +248,10 @@ public class ServerPlayer extends Player {
private int containerCounter;
public boolean wonGame;
private int containerUpdateDelay; // Paper - Configurable container update tick rate
+ // Paper start - cancellable death event
+ public boolean queueHealthUpdatePacket;
+ public net.minecraft.network.protocol.game.ClientboundSetHealthPacket queuedHealthUpdatePacket;
+ // Paper end - cancellable death event
// CraftBukkit start
public String displayName;
@@ -810,7 +814,7 @@ public class ServerPlayer extends Player {
@Override
public void die(DamageSource damageSource) {
- this.gameEvent(GameEvent.ENTITY_DIE);
+ // this.gameEvent(GameEvent.ENTITY_DIE); // Paper - move below event cancellation check
boolean flag = this.level().getGameRules().getBoolean(GameRules.RULE_SHOWDEATHMESSAGES);
// CraftBukkit start - fire PlayerDeathEvent
if (this.isRemoved()) {
@@ -838,6 +842,16 @@ public class ServerPlayer extends Player {
String deathmessage = defaultMessage.getString();
this.keepLevel = keepInventory; // SPIGOT-2222: pre-set keepLevel
org.bukkit.event.entity.PlayerDeathEvent event = CraftEventFactory.callPlayerDeathEvent(this, loot, PaperAdventure.asAdventure(defaultMessage), keepInventory); // Paper - Adventure
+ // Paper start - cancellable death event
+ if (event.isCancelled()) {
+ // make compatible with plugins that might have already set the health in an event listener
+ if (this.getHealth() <= 0) {
+ this.setHealth((float) event.getReviveHealth());
+ }
+ return;
+ }
+ this.gameEvent(GameEvent.ENTITY_DIE); // moved from the top of this method
+ // Paper end
// SPIGOT-943 - only call if they have an inventory open
if (this.containerMenu != this.inventoryMenu) {
@@ -986,8 +1000,17 @@ public class ServerPlayer extends Player {
}
}
}
-
- return super.hurt(source, amount);
+ // Paper start - cancellable death events
+ //return super.hurt(source, amount);
+ this.queueHealthUpdatePacket = true;
+ boolean damaged = super.hurt(source, amount);
+ this.queueHealthUpdatePacket = false;
+ if (this.queuedHealthUpdatePacket != null) {
+ this.connection.send(this.queuedHealthUpdatePacket);
+ this.queuedHealthUpdatePacket = null;
+ }
+ return damaged;
+ // Paper end
}
}
}
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 9e0555b1e98bba6a9305c3996c69347e47d73204..bd70046b4fef307b6b8b626a65f0b4a366ab7158 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -258,6 +258,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
public Set<UUID> collidableExemptions = new HashSet<>();
public boolean bukkitPickUpLoot;
public org.bukkit.craftbukkit.entity.CraftLivingEntity getBukkitLivingEntity() { return (org.bukkit.craftbukkit.entity.CraftLivingEntity) super.getBukkitEntity(); } // Paper
+ public boolean silentDeath = false; // Paper - mark entity as dying silently for cancellable death event
@Override
public float getBukkitYaw() {
@@ -1521,13 +1522,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
if (this.isDeadOrDying()) {
if (!this.checkTotemDeathProtection(source)) {
- SoundEvent soundeffect = this.getDeathSound();
-
- if (flag1 && soundeffect != null) {
- this.playSound(soundeffect, this.getSoundVolume(), this.getVoicePitch());
- }
+ // Paper start - moved into CraftEventFactory event caller for cancellable death event
+ this.silentDeath = !flag1; // mark entity as dying silently
+ // Paper end
this.die(source);
+ this.silentDeath = false; // Paper - cancellable death event - reset to default
}
} else if (flag1) {
this.playHurtSound(source);
@@ -1679,6 +1679,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
Entity entity = damageSource.getEntity();
LivingEntity entityliving = this.getKillCredit();
+ /* // Paper - move down to make death event cancellable - this is the awardKillScore below
if (this.deathScore >= 0 && entityliving != null) {
entityliving.awardKillScore(this, this.deathScore, damageSource);
}
@@ -1690,24 +1691,59 @@ public abstract class LivingEntity extends Entity implements Attackable {
if (!this.level().isClientSide && this.hasCustomName()) {
if (org.spigotmc.SpigotConfig.logNamedDeaths) LivingEntity.LOGGER.info("Named entity {} died: {}", this, this.getCombatTracker().getDeathMessage().getString()); // Spigot
}
+ */ // Paper - move down to make death event cancellable - this is the awardKillScore below
this.dead = true;
- this.getCombatTracker().recheckStatus();
+ // Paper - moved into if below
Level world = this.level();
if (world instanceof ServerLevel) {
ServerLevel worldserver = (ServerLevel) world;
+ // Paper - move below into if for onKill
- if (entity == null || entity.killedEntity(worldserver, this)) {
+ // Paper start
+ org.bukkit.event.entity.EntityDeathEvent deathEvent = this.dropAllDeathLoot(damageSource);
+ if (deathEvent == null || !deathEvent.isCancelled()) {
+ if (this.deathScore >= 0 && entityliving != null) {
+ entityliving.awardKillScore(this, this.deathScore, damageSource);
+ }
+ // Paper start - clear equipment if event is not cancelled
+ if (this instanceof Mob) {
+ for (EquipmentSlot slot : this.clearedEquipmentSlots) {
+ this.setItemSlot(slot, ItemStack.EMPTY);
+ }
+ this.clearedEquipmentSlots.clear();
+ }
+ // Paper end
+
+ if (this.isSleeping()) {
+ this.stopSleeping();
+ }
+
+ if (!this.level().isClientSide && this.hasCustomName()) {
+ if (org.spigotmc.SpigotConfig.logNamedDeaths) LivingEntity.LOGGER.info("Named entity {} died: {}", this, this.getCombatTracker().getDeathMessage().getString()); // Spigot
+ }
+
+ this.getCombatTracker().recheckStatus();
+ if (entity != null) {
+ entity.killedEntity((ServerLevel) this.level(), this);
+ }
this.gameEvent(GameEvent.ENTITY_DIE);
- this.dropAllDeathLoot(damageSource);
- this.createWitherRose(entityliving);
+ } else {
+ this.dead = false;
+ this.setHealth((float) deathEvent.getReviveHealth());
}
- this.level().broadcastEntityEvent(this, (byte) 3);
+ // Paper end
+ this.createWitherRose(entityliving);
}
+ // Paper start
+ if (this.dead) { // Paper
+ this.level().broadcastEntityEvent(this, (byte) 3);
this.setPose(Pose.DYING);
+ }
+ // Paper end
}
}
@@ -1715,7 +1751,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
if (!this.level().isClientSide) {
boolean flag = false;
- if (adversary instanceof WitherBoss) {
+ if (this.dead && adversary instanceof WitherBoss) { // Paper
if (this.level().getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)) {
BlockPos blockposition = this.blockPosition();
BlockState iblockdata = Blocks.WITHER_ROSE.defaultBlockState();
@@ -1744,7 +1780,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
}
- protected void dropAllDeathLoot(DamageSource source) {
+ // Paper start
+ protected boolean clearEquipmentSlots = true;
+ protected Set<EquipmentSlot> clearedEquipmentSlots = new java.util.HashSet<>();
+ protected org.bukkit.event.entity.EntityDeathEvent dropAllDeathLoot(DamageSource source) {
+ // Paper end
Entity entity = source.getEntity();
int i;
@@ -1759,18 +1799,27 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.dropEquipment(); // CraftBukkit - from below
if (this.shouldDropLoot() && this.level().getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) {
this.dropFromLootTable(source, flag);
+ // Paper start
+ final boolean prev = this.clearEquipmentSlots;
+ this.clearEquipmentSlots = false;
+ this.clearedEquipmentSlots.clear();
+ // Paper end
this.dropCustomDeathLoot(source, i, flag);
+ this.clearEquipmentSlots = prev; // Paper
}
// CraftBukkit start - Call death event
- CraftEventFactory.callEntityDeathEvent(this, this.drops);
+ org.bukkit.event.entity.EntityDeathEvent deathEvent = CraftEventFactory.callEntityDeathEvent(this, this.drops); // Paper
+ this.postDeathDropItems(deathEvent); // Paper
this.drops = new ArrayList<>();
// CraftBukkit end
// this.dropInventory();// CraftBukkit - moved up
this.dropExperience();
+ return deathEvent; // Paper
}
protected void dropEquipment() {}
+ protected void postDeathDropItems(org.bukkit.event.entity.EntityDeathEvent event) {} // Paper - method for post death logic that cannot be ran before the event is potentially cancelled
// CraftBukkit start
public int getExpReward() {
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index 4ae0f36276592e37aeb5f881b713efa76d086f8e..c4b05c7e339a2ec01ee3f5e4dec0b3493788d8d2 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -1075,7 +1075,13 @@ public abstract class Mob extends LivingEntity implements Targeting {
}
this.spawnAtLocation(itemstack);
+ if (this.clearEquipmentSlots) { // Paper
this.setItemSlot(enumitemslot, ItemStack.EMPTY);
+ // Paper start
+ } else {
+ this.clearedEquipmentSlots.add(enumitemslot);
+ }
+ // Paper end
}
}
diff --git a/src/main/java/net/minecraft/world/entity/animal/Fox.java b/src/main/java/net/minecraft/world/entity/animal/Fox.java
index 8670d8b2a08e96df787a91f36c48df8b345080dc..6124209f50300eeaab45b66c2f1a5b2944119450 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Fox.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Fox.java
@@ -712,15 +712,25 @@ public class Fox extends Animal implements VariantHolder<Fox.Type> {
}
@Override
- protected void dropAllDeathLoot(DamageSource source) {
- ItemStack itemstack = this.getItemBySlot(EquipmentSlot.MAINHAND);
+ // Paper start - Cancellable death event
+ protected org.bukkit.event.entity.EntityDeathEvent dropAllDeathLoot(DamageSource source) {
+ ItemStack itemstack = this.getItemBySlot(EquipmentSlot.MAINHAND).copy(); // Paper - modified by supercall
+
+ org.bukkit.event.entity.EntityDeathEvent deathEvent = super.dropAllDeathLoot(source);
+
+ // Below is code to drop
+
+ if (deathEvent == null || deathEvent.isCancelled()) {
+ return deathEvent;
+ }
+ // Paper end
if (!itemstack.isEmpty()) {
this.spawnAtLocation(itemstack);
this.setItemSlot(EquipmentSlot.MAINHAND, ItemStack.EMPTY);
}
- super.dropAllDeathLoot(source);
+ return deathEvent; // Paper
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractChestedHorse.java b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractChestedHorse.java
index bb399f775a5530a01f59332848c8ab9b8eceb2b5..14edfe103e61024b569f33de0b6608f39e749319 100644
--- a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractChestedHorse.java
+++ b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractChestedHorse.java
@@ -70,11 +70,19 @@ public abstract class AbstractChestedHorse extends AbstractHorse {
this.spawnAtLocation(Blocks.CHEST);
}
- this.setChest(false);
+ //this.setCarryingChest(false); // Paper - moved to post death logic
}
}
+ // Paper start
+ protected void postDeathDropItems(org.bukkit.event.entity.EntityDeathEvent event) {
+ if (this.hasChest() && (event == null || !event.isCancelled())) {
+ this.setChest(false);
+ }
+ }
+ // Paper end
+
@Override
public void addAdditionalSaveData(CompoundTag nbt) {
super.addAdditionalSaveData(nbt);
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
index ecce8036e58a9ed1408e110e75980bf77c18779a..ddd512e1d7608ec051fb5adf6ec2c6bbb93f5a9d 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
@@ -492,8 +492,10 @@ public class ArmorStand extends LivingEntity {
}
// CraftBukkit end
if (source.is(DamageTypeTags.IS_EXPLOSION)) {
- this.brokenByAnything(source);
- this.kill();
+ // Paper start - avoid duplicate event call
+ org.bukkit.event.entity.EntityDeathEvent event = this.brokenByAnything(source);
+ if (!event.isCancelled()) this.kill(false);
+ // Paper end
return false;
} else if (source.is(DamageTypeTags.IGNITES_ARMOR_STANDS)) {
if (this.isOnFire()) {
@@ -536,9 +538,9 @@ public class ArmorStand extends LivingEntity {
this.gameEvent(GameEvent.ENTITY_DAMAGE, source.getEntity());
this.lastHit = i;
} else {
- this.brokenByPlayer(source);
+ org.bukkit.event.entity.EntityDeathEvent event = this.brokenByPlayer(source); // Paper
this.showBreakingParticles();
- this.discard(); // CraftBukkit - SPIGOT-4890: remain as this.discard() since above damagesource method will call death event
+ if (!event.isCancelled()) this.kill(false); // Paper - we still need to kill to follow vanilla logic (emit the game event etc...)
}
return true;
@@ -590,8 +592,10 @@ public class ArmorStand extends LivingEntity {
f1 -= amount;
if (f1 <= 0.5F) {
- this.brokenByAnything(damageSource);
- this.kill();
+ // Paper start - avoid duplicate event call
+ org.bukkit.event.entity.EntityDeathEvent event = this.brokenByAnything(damageSource);
+ if (!event.isCancelled()) this.kill(false);
+ // Paper end
} else {
this.setHealth(f1);
this.gameEvent(GameEvent.ENTITY_DAMAGE, damageSource.getEntity());
@@ -599,7 +603,7 @@ public class ArmorStand extends LivingEntity {
}
- private void brokenByPlayer(DamageSource damageSource) {
+ private org.bukkit.event.entity.EntityDeathEvent brokenByPlayer(DamageSource damageSource) { // Paper
ItemStack itemstack = new ItemStack(Items.ARMOR_STAND);
if (this.hasCustomName()) {
@@ -607,10 +611,10 @@ public class ArmorStand extends LivingEntity {
}
this.drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
- this.brokenByAnything(damageSource);
+ return this.brokenByAnything(damageSource); // Paper
}
- private void brokenByAnything(DamageSource damageSource) {
+ private org.bukkit.event.entity.EntityDeathEvent brokenByAnything(DamageSource damageSource) { // Paper
this.playBrokenSound();
// this.dropAllDeathLoot(damagesource); // CraftBukkit - moved down
@@ -632,7 +636,7 @@ public class ArmorStand extends LivingEntity {
this.armorItems.set(i, ItemStack.EMPTY);
}
}
- this.dropAllDeathLoot(damageSource); // CraftBukkit - moved from above
+ return this.dropAllDeathLoot(damageSource); // CraftBukkit - moved from above // Paper
}
@@ -759,7 +763,16 @@ public class ArmorStand extends LivingEntity {
@Override
public void kill() {
- org.bukkit.craftbukkit.event.CraftEventFactory.callEntityDeathEvent(this, this.drops); // CraftBukkit - call event
+ // Paper start
+ kill(true);
+ }
+
+ public void kill(boolean callEvent) {
+ if (callEvent) {
+ // Paper end
+ org.bukkit.event.entity.EntityDeathEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callEntityDeathEvent(this, this.drops); // CraftBukkit - call event // Paper - make cancellable
+ if (event.isCancelled()) return; // Paper - make cancellable
+ } // Paper
this.remove(Entity.RemovalReason.KILLED);
this.gameEvent(GameEvent.ENTITY_DIE);
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index b98f26b6958cb3f874a4c0d85e2c10ec517cbbff..adcba9111415a20a4a55bb182be84c9f6d3755d7 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2383,7 +2383,14 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
@Override
public void sendHealthUpdate() {
FoodData foodData = this.getHandle().getFoodData();
- this.sendHealthUpdate(this.getScaledHealth(), foodData.getFoodLevel(), foodData.getSaturationLevel());
+ // Paper start - cancellable death event
+ ClientboundSetHealthPacket packet = new ClientboundSetHealthPacket(this.getScaledHealth(), foodData.getFoodLevel(), foodData.getSaturationLevel());
+ if (this.getHandle().queueHealthUpdatePacket) {
+ this.getHandle().queuedHealthUpdatePacket = packet;
+ } else {
+ this.getHandle().connection.send(packet);
+ }
+ // Paper end
}
public void injectScaledMaxHealth(Collection<AttributeInstance> collection, boolean force) {
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 3ee2b011689b9d2df03947c1e04e3042b8e8c853..131fa4d389c3ddad31651f298ccd807847462f38 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -890,9 +890,16 @@ public class CraftEventFactory {
public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, List<org.bukkit.inventory.ItemStack> drops) {
CraftLivingEntity entity = (CraftLivingEntity) victim.getBukkitEntity();
EntityDeathEvent event = new EntityDeathEvent(entity, drops, victim.getExpReward());
+ populateFields(victim, event); // Paper - make cancellable
CraftWorld world = (CraftWorld) entity.getWorld();
Bukkit.getServer().getPluginManager().callEvent(event);
+ // Paper start - make cancellable
+ if (event.isCancelled()) {
+ return event;
+ }
+ playDeathSound(victim, event);
+ // Paper end
victim.expToDrop = event.getDroppedExp();
for (org.bukkit.inventory.ItemStack stack : event.getDrops()) {
@@ -909,8 +916,15 @@ public class CraftEventFactory {
PlayerDeathEvent event = new PlayerDeathEvent(entity, drops, victim.getExpReward(), 0, deathMessage);
event.setKeepInventory(keepInventory);
event.setKeepLevel(victim.keepLevel); // SPIGOT-2222: pre-set keepLevel
+ populateFields(victim, event); // Paper - make cancellable
org.bukkit.World world = entity.getWorld();
Bukkit.getServer().getPluginManager().callEvent(event);
+ // Paper start - make cancellable
+ if (event.isCancelled()) {
+ return event;
+ }
+ playDeathSound(victim, event);
+ // Paper end
victim.keepLevel = event.getKeepLevel();
victim.newLevel = event.getNewLevel();
@@ -927,6 +941,31 @@ public class CraftEventFactory {
return event;
}
+ // Paper start - helper methods for making death event cancellable
+ // Add information to death event
+ private static void populateFields(net.minecraft.world.entity.LivingEntity victim, EntityDeathEvent event) {
+ event.setReviveHealth(event.getEntity().getAttribute(org.bukkit.attribute.Attribute.GENERIC_MAX_HEALTH).getValue());
+ event.setShouldPlayDeathSound(!victim.silentDeath && !victim.isSilent());
+ net.minecraft.sounds.SoundEvent soundEffect = victim.getDeathSound();
+ event.setDeathSound(soundEffect != null ? org.bukkit.craftbukkit.CraftSound.minecraftToBukkit(soundEffect) : null);
+ event.setDeathSoundCategory(org.bukkit.SoundCategory.valueOf(victim.getSoundSource().name()));
+ event.setDeathSoundVolume(victim.getSoundVolume());
+ event.setDeathSoundPitch(victim.getVoicePitch());
+ }
+
+ // Play death sound manually
+ private static void playDeathSound(net.minecraft.world.entity.LivingEntity victim, EntityDeathEvent event) {
+ if (event.shouldPlayDeathSound() && event.getDeathSound() != null && event.getDeathSoundCategory() != null) {
+ net.minecraft.world.entity.player.Player source = victim instanceof net.minecraft.world.entity.player.Player ? (net.minecraft.world.entity.player.Player) victim : null;
+ double x = event.getEntity().getLocation().getX();
+ double y = event.getEntity().getLocation().getY();
+ double z = event.getEntity().getLocation().getZ();
+ net.minecraft.sounds.SoundEvent soundEffect = org.bukkit.craftbukkit.CraftSound.bukkitToMinecraft(event.getDeathSound());
+ net.minecraft.sounds.SoundSource soundCategory = net.minecraft.sounds.SoundSource.valueOf(event.getDeathSoundCategory().name());
+ victim.level().playSound(source, x, y, z, soundEffect, soundCategory, event.getDeathSoundVolume(), event.getDeathSoundPitch());
+ }
+ }
+ // Paper end
/**
* Server methods
*/
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