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0ae3b1c14e
Paper/Spigot-Server-Patches/0355-Improve-death-events.patch
Zach Brown 0ae3b1c14e Update upstream B/CB/S 
--- work/Bukkit
Submodule work/Bukkit 3aee9dbd0..0828ce366:
  > Add SpawnReason.SHEARING
  > SPIGOT-4339: Add EntityTransformEvent

--- work/CraftBukkit
Submodule work/CraftBukkit 17ff1e046..c2035aa1d:
  > Add some missing CreatureSpawnEvent.SpawnReason calls
  > SPIGOT-4339: Add EntityTransformEvent

--- work/Spigot
Submodule work/Spigot 947a8e7fd..5696c83c1:
  > Rebuild patches
2018-11-13 23:35:43 -05:00

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From a991a542b14435b8f707a4cd6708d8c4c71332f8 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.
diff --git a/src/main/java/net/minecraft/server/CombatTracker.java b/src/main/java/net/minecraft/server/CombatTracker.java
index 9a74601b..6e60d15c 100644
--- a/src/main/java/net/minecraft/server/CombatTracker.java
+++ b/src/main/java/net/minecraft/server/CombatTracker.java
@@ -163,6 +163,7 @@ public class CombatTracker {
this.h = null;
}
+ public void reset() { this.g(); } // Paper - OBFHELPER
public void g() {
int i = this.f ? 300 : 100;
if (this.g && (!this.b.isAlive() || this.b.ticksLived - this.c > i)) {
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 665c85ca..8abd71df 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1539,6 +1539,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
return false;
}
+ public void runKillTrigger(Entity entity, int kills, DamageSource damageSource) { this.a(entity, kills, damageSource); } // Paper - OBFHELPER
public void a(Entity entity, int i, DamageSource damagesource) {
if (entity instanceof EntityPlayer) {
CriterionTriggers.c.a((EntityPlayer) entity, this, damagesource);
@@ -2408,6 +2409,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
this.fallDistance = 0.0F;
}
+ public void onKill(EntityLiving entityLiving) { this.b(entityLiving); } // Paper - OBFHELPER
public void b(EntityLiving entityliving) {}
protected boolean i(double d0, double d1, double d2) {
@@ -3078,6 +3080,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
return EnumPistonReaction.NORMAL;
}
+ public SoundCategory getDeathSoundCategory() { return bV();} // Paper - OBFHELPER
public SoundCategory bV() {
return SoundCategory.NEUTRAL;
}
diff --git a/src/main/java/net/minecraft/server/EntityArmorStand.java b/src/main/java/net/minecraft/server/EntityArmorStand.java
index d2b20888..965ace8d 100644
--- a/src/main/java/net/minecraft/server/EntityArmorStand.java
+++ b/src/main/java/net/minecraft/server/EntityArmorStand.java
@@ -656,7 +656,8 @@ public class EntityArmorStand extends EntityLiving {
}
public void killEntity() {
- org.bukkit.craftbukkit.event.CraftEventFactory.callEntityDeathEvent(this, drops); // CraftBukkit - call event
+ org.bukkit.event.entity.EntityDeathEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callEntityDeathEvent(this, drops); // CraftBukkit - call event // Paper - make cancellable
+ if (event.isCancelled()) return; // Paper - make cancellable
this.die();
}
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index 2aedfa80..83d648ff 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -76,14 +76,14 @@ public abstract class EntityLiving extends Entity {
public float aU;
public EntityHuman killer;
public int lastDamageByPlayerTime; // Paper - public
- protected boolean aX;
+ protected boolean aX; protected void setDying(boolean dying) { this.aX = dying; } protected boolean isDying() { return this.aX; } // Paper - OBFHELPER
protected int ticksFarFromPlayer;
protected float aZ;
protected float ba;
protected float bb;
protected float bc;
protected float bd;
- protected int be;
+ protected int be; protected int getKillCount() { return this.be; } // Paper - OBFHELPER
public float lastDamage;
protected boolean bg;
public float bh;
@@ -124,6 +124,7 @@ public abstract class EntityLiving extends Entity {
public boolean collides = true;
public boolean canPickUpLoot;
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() {
@@ -1071,13 +1072,17 @@ public abstract class EntityLiving extends Entity {
if (this.getHealth() <= 0.0F) {
if (!this.e(damagesource)) {
- SoundEffect soundeffect = this.cs();
+ // Paper start - moved into CraftEventFactory event caller for cancellable death event
+ //SoundEffect soundeffect = this.cs();
- if (flag1 && soundeffect != null) {
- this.a(soundeffect, this.cD(), this.cE());
- }
+ //if (flag1 && soundeffect != null) {
+ // this.a(soundeffect, this.cD(), this.cE());
+ //}
+ this.silentDeath = !flag1; // mark entity as dying silently
+ // Paper end
this.die(damagesource);
+ this.silentDeath = false; // Paper - cancellable death event - reset to default
}
} else if (flag1) {
this.c(damagesource);
@@ -1205,16 +1210,20 @@ public abstract class EntityLiving extends Entity {
Entity entity = damagesource.getEntity();
EntityLiving entityliving = this.cv();
- if (this.be >= 0 && entityliving != null) {
- entityliving.a(this, this.be, damagesource);
- }
+ // Paper start - move down to make death event cancellable
+ //if (this.be >= 0 && entityliving != null) {
+ // entityliving.a(this, this.be, damagesource);
+ //}
- if (entity != null) {
- entity.b(this);
- }
+ //if (entity != null) {
+ // entity.b(this);
+ //}
- this.aX = true;
- this.getCombatTracker().g();
+ this.aX = true; // Paper - Always set at start, unset later if cancelled - GH-1432
+ //this.getCombatTracker().g();
+
+ org.bukkit.event.entity.EntityDeathEvent deathEvent = null;
+ // Paper end
if (!this.world.isClientSide) {
int i = 0;
@@ -1227,15 +1236,33 @@ public abstract class EntityLiving extends Entity {
this.a(flag, i, damagesource);
// CraftBukkit start - Call death event
- CraftEventFactory.callEntityDeathEvent(this, this.drops);
+ deathEvent = CraftEventFactory.callEntityDeathEvent(this, this.drops); // Paper - cancellable death event
this.drops = new ArrayList<org.bukkit.inventory.ItemStack>();
} else {
- CraftEventFactory.callEntityDeathEvent(this);
+ deathEvent = CraftEventFactory.callEntityDeathEvent(this); // Paper - cancellable death event
// CraftBukkit end
}
}
- this.world.broadcastEntityEffect(this, (byte) 3);
+ // Paper start - cancellable death event
+ if (deathEvent == null || !deathEvent.isCancelled()) {
+ // triggers and stats got moved down
+ if (this.getKillCount() >= 0 && entityliving != null) {
+ entityliving.runKillTrigger(this, this.getKillCount(), damagesource);
+ }
+
+ if (entity != null) {
+ entity.onKill(this);
+ }
+
+ this.getCombatTracker().reset();
+ this.setDying(true);
+ this.world.broadcastEntityEffect(this, (byte) 3);
+ } else {
+ this.setDying(false); // Paper - reset if cancelled
+ this.setHealth((float) deathEvent.getReviveHealth());
+ }
+ // Paper end
}
}
@@ -1289,6 +1316,7 @@ public abstract class EntityLiving extends Entity {
return SoundEffects.ENTITY_GENERIC_HURT;
}
+ @Nullable public SoundEffect getDeathSoundEffect() { return cs();} // Paper - OBFHELPER
@Nullable
protected SoundEffect cs() {
return SoundEffects.ENTITY_GENERIC_DEATH;
@@ -1709,10 +1737,12 @@ public abstract class EntityLiving extends Entity {
}
+ public float getDeathSoundVolume() { return cD();} // Paper - OBFHELPER
protected float cD() {
return 1.0F;
}
+ public float getDeathSoundPitch() { return cE();} // Paper - OBFHELPER
protected float cE() {
return this.isBaby() ? (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.5F : (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F;
}
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 9dcf2960..720eb918 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -75,6 +75,10 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
public int ping;
public boolean viewingCredits;
private int containerUpdateDelay; // Paper
+ // Paper start - cancellable death event
+ public boolean queueHealthUpdatePacket = false;
+ public net.minecraft.server.PacketPlayOutUpdateHealth queuedHealthUpdatePacket;
+ // Paper end
// CraftBukkit start
public String displayName;
@@ -509,6 +513,15 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
String deathmessage = defaultMessage.getString();
org.bukkit.event.entity.PlayerDeathEvent event = CraftEventFactory.callPlayerDeathEvent(this, loot, deathmessage, keepInventory);
+ // 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;
+ }
+ // Paper end
String deathMessage = event.getDeathMessage();
@@ -636,8 +649,17 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
}
}
}
-
- return super.damageEntity(damagesource, f);
+ // Paper start - cancellable death events
+ //return super.damageEntity(damagesource, f);
+ this.queueHealthUpdatePacket = true;
+ boolean damaged = super.damageEntity(damagesource, f);
+ this.queueHealthUpdatePacket = false;
+ if (this.queuedHealthUpdatePacket != null) {
+ this.playerConnection.sendPacket(this.queuedHealthUpdatePacket);
+ this.queuedHealthUpdatePacket = null;
+ }
+ return damaged;
+ // Paper end
}
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftSound.java b/src/main/java/org/bukkit/craftbukkit/CraftSound.java
index 17fab031..ee8219e3 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftSound.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftSound.java
@@ -674,6 +674,22 @@ public enum CraftSound {
WEATHER_RAIN_ABOVE("weather.rain.above");
private final String minecraftKey;
+ // Paper start - cancellable death event
+ public static CraftSound getBySoundEffect(final SoundEffect effect) {
+ MinecraftKey key = IRegistry.SOUND_EVENT.getKey(effect);
+ Preconditions.checkArgument(key != null, "Key for sound effect %s not found?", effect.toString());
+
+ return valueOf(key.getKey().replace('.', '_').toUpperCase(java.util.Locale.ENGLISH));
+ }
+
+ public static Sound getSoundByEffect(final SoundEffect effect) {
+ return Sound.valueOf(getBySoundEffect(effect).name());
+ }
+
+ public static SoundEffect getSoundEffect(final Sound sound) {
+ return getSoundEffect(getSound(sound));
+ }
+ // Paper end
CraftSound(String minecraftKey) {
this.minecraftKey = minecraftKey;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 8be0a47b..f56ef6f7 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1711,7 +1711,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
}
public void sendHealthUpdate() {
- getHandle().playerConnection.sendPacket(new PacketPlayOutUpdateHealth(getScaledHealth(), getHandle().getFoodData().getFoodLevel(), getHandle().getFoodData().getSaturationLevel()));
+ // Paper start - cancellable death event
+ //getHandle().playerConnection.sendPacket(new PacketPlayOutUpdateHealth(getScaledHealth(), getHandle().getFoodData().getFoodLevel(), getHandle().getFoodData().getSaturationLevel()));
+ PacketPlayOutUpdateHealth packet = new PacketPlayOutUpdateHealth(getScaledHealth(), getHandle().getFoodData().getFoodLevel(), getHandle().getFoodData().getSaturationLevel());
+ if (this.getHandle().queueHealthUpdatePacket) {
+ this.getHandle().queuedHealthUpdatePacket = packet;
+ } else {
+ this.getHandle().playerConnection.sendPacket(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 e592dfb4..c70890cc 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -495,9 +495,16 @@ public class CraftEventFactory {
public static EntityDeathEvent callEntityDeathEvent(EntityLiving 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()) {
@@ -513,8 +520,15 @@ public class CraftEventFactory {
CraftPlayer entity = victim.getBukkitEntity();
PlayerDeathEvent event = new PlayerDeathEvent(entity, drops, victim.getExpReward(), 0, deathMessage);
event.setKeepInventory(keepInventory);
+ 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();
@@ -535,6 +549,31 @@ public class CraftEventFactory {
return event;
}
+ // Paper start - helper methods for making death event cancellable
+ // Add information to death event
+ private static void populateFields(EntityLiving victim, EntityDeathEvent event) {
+ event.setReviveHealth(event.getEntity().getAttribute(org.bukkit.attribute.Attribute.GENERIC_MAX_HEALTH).getValue());
+ event.setShouldPlayDeathSound(!victim.silentDeath && !victim.isSilent());
+ SoundEffect soundEffect = victim.getDeathSoundEffect();
+ event.setDeathSound(soundEffect != null ? org.bukkit.craftbukkit.CraftSound.getSoundByEffect(soundEffect) : null);
+ event.setDeathSoundCategory(org.bukkit.SoundCategory.valueOf(victim.getDeathSoundCategory().name()));
+ event.setDeathSoundVolume(victim.getDeathSoundVolume());
+ event.setDeathSoundPitch(victim.getDeathSoundPitch());
+ }
+
+ // Play death sound manually
+ private static void playDeathSound(EntityLiving victim, EntityDeathEvent event) {
+ if (event.shouldPlayDeathSound() && event.getDeathSound() != null && event.getDeathSoundCategory() != null) {
+ EntityHuman source = victim instanceof EntityHuman ? (EntityHuman) victim : null;
+ double x = event.getEntity().getLocation().getX();
+ double y = event.getEntity().getLocation().getY();
+ double z = event.getEntity().getLocation().getZ();
+ SoundEffect soundEffect = org.bukkit.craftbukkit.CraftSound.getSoundEffect(event.getDeathSound());
+ SoundCategory soundCategory = SoundCategory.valueOf(event.getDeathSoundCategory().name());
+ victim.world.sendSoundEffect(source, x, y, z, soundEffect, soundCategory, event.getDeathSoundVolume(), event.getDeathSoundPitch());
+ }
+ }
+ // Paper end
/**
* Server methods
*/
--
2.17.1
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