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-rw-r--r--patches/server/0912-Restore-vanilla-entity-drops-behavior.patch270
1 files changed, 270 insertions, 0 deletions
diff --git a/patches/server/0912-Restore-vanilla-entity-drops-behavior.patch b/patches/server/0912-Restore-vanilla-entity-drops-behavior.patch
new file mode 100644
index 0000000000..ac02649470
--- /dev/null
+++ b/patches/server/0912-Restore-vanilla-entity-drops-behavior.patch
@@ -0,0 +1,270 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <[email protected]>
+Date: Tue, 22 Mar 2022 09:34:41 -0700
+Subject: [PATCH] Restore vanilla entity drops behavior
+
+Instead of just tracking the itemstacks, this tracks with it, the
+action to take with that itemstack to apply the correct logic
+on dropping the item instead of generalizing it for all dropped
+items like CB does.
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index b65d816bb9feb18ecf74e10e9728c302e5657587..62ec627e80b87a92a2a51ba9fc3626a67636855f 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -976,20 +976,20 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player {
+ if (this.isRemoved()) {
+ return;
+ }
+- java.util.List<org.bukkit.inventory.ItemStack> loot = new java.util.ArrayList<>(this.getInventory().getContainerSize());
++ List<DefaultDrop> loot = new java.util.ArrayList<>(this.getInventory().getContainerSize()); // Paper - Restore vanilla drops behavior
+ boolean keepInventory = this.level().getGameRules().getBoolean(GameRules.RULE_KEEPINVENTORY) || this.isSpectator();
+
+ if (!keepInventory) {
+ for (ItemStack item : this.getInventory().getContents()) {
+ if (!item.isEmpty() && !EnchantmentHelper.has(item, EnchantmentEffectComponents.PREVENT_EQUIPMENT_DROP)) {
+- loot.add(CraftItemStack.asCraftMirror(item).markForInventoryDrop());
++ loot.add(new DefaultDrop(item, stack -> this.drop(stack, true, false, false))); // Paper - Restore vanilla drops behavior; drop function taken from Inventory#dropAll (don't fire drop event)
+ }
+ }
+ }
+ if (this.shouldDropLoot() && this.level().getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) { // Paper - fix player loottables running when mob loot gamerule is false
+ // SPIGOT-5071: manually add player loot tables (SPIGOT-5195 - ignores keepInventory rule)
+ this.dropFromLootTable(damageSource, this.lastHurtByPlayerTime > 0);
+- this.dropCustomDeathLoot(this.serverLevel(), damageSource, flag);
++ // Paper - Restore vanilla drops behaviour; custom death loot is a noop on server player, remove.
+
+ loot.addAll(this.drops);
+ this.drops.clear(); // SPIGOT-5188: make sure to clear
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index f163cb3c75e90b96b3794a7e0c5b803268814c8c..57e7938bc605f320ed5303fcbc617b4d32ba42b8 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -2562,6 +2562,25 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
+
+ @Nullable
+ public ItemEntity spawnAtLocation(ItemStack stack, float yOffset) {
++ // Paper start - Restore vanilla drops behavior
++ return this.spawnAtLocation(stack, yOffset, null);
++ }
++ public record DefaultDrop(Item item, org.bukkit.inventory.ItemStack stack, @Nullable java.util.function.Consumer<ItemStack> dropConsumer) {
++ public DefaultDrop(final ItemStack stack, final java.util.function.Consumer<ItemStack> dropConsumer) {
++ this(stack.getItem(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(stack), dropConsumer);
++ }
++
++ public void runConsumer(final org.bukkit.World fallbackWorld, final Location fallbackLoc) {
++ if (this.dropConsumer == null || org.bukkit.craftbukkit.inventory.CraftItemType.bukkitToMinecraft(this.stack.getType()) != this.item) {
++ fallbackWorld.dropItem(fallbackLoc, this.stack);
++ } else {
++ this.dropConsumer.accept(org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(this.stack));
++ }
++ }
++ }
++ @Nullable
++ public ItemEntity spawnAtLocation(ItemStack stack, float yOffset, @Nullable java.util.function.Consumer<? super ItemEntity> delayedAddConsumer) {
++ // Paper end - Restore vanilla drops behavior
+ if (stack.isEmpty()) {
+ return null;
+ } else if (this.level().isClientSide) {
+@@ -2569,14 +2588,21 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
+ } else {
+ // CraftBukkit start - Capture drops for death event
+ if (this instanceof net.minecraft.world.entity.LivingEntity && !((net.minecraft.world.entity.LivingEntity) this).forceDrops) {
+- ((net.minecraft.world.entity.LivingEntity) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(stack)); // Paper - mirror so we can destroy it later
++ // Paper start - Restore vanilla drops behavior
++ ((net.minecraft.world.entity.LivingEntity) this).drops.add(new net.minecraft.world.entity.Entity.DefaultDrop(stack, itemStack -> {
++ ItemEntity itemEntity = new ItemEntity(this.level, this.getX(), this.getY() + (double) yOffset, this.getZ(), itemStack); // stack is copied before consumer
++ itemEntity.setDefaultPickUpDelay();
++ this.level.addFreshEntity(itemEntity);
++ if (delayedAddConsumer != null) delayedAddConsumer.accept(itemEntity);
++ }));
++ // Paper end - Restore vanilla drops behavior
+ return null;
+ }
+ // CraftBukkit end
+ ItemEntity entityitem = new ItemEntity(this.level(), this.getX(), this.getY() + (double) yOffset, this.getZ(), stack.copy()); // Paper - copy so we can destroy original
+ stack.setCount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe
+
+- entityitem.setDefaultPickUpDelay();
++ entityitem.setDefaultPickUpDelay(); // Paper - diff on change (in dropConsumer)
+ // Paper start - Call EntityDropItemEvent
+ return this.spawnAtLocation(entityitem);
+ }
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 0c67f04ae7eeaa10a90419031447ad5397c6b9e2..6b2dc430126713e11658f94762035ff10bbe018c 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -278,7 +278,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+ protected float appliedScale;
+ // CraftBukkit start
+ public int expToDrop;
+- public ArrayList<org.bukkit.inventory.ItemStack> drops = new ArrayList<org.bukkit.inventory.ItemStack>();
++ public ArrayList<DefaultDrop> drops = new ArrayList<>(); // Paper - Restore vanilla drops behavior
+ public final org.bukkit.craftbukkit.attribute.CraftAttributeMap craftAttributes;
+ public boolean collides = true;
+ public Set<UUID> collidableExemptions = new HashSet<>();
+diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+index 1b49090a466bc74d9e5f2815314955b6dfbb83dc..62271e74399a827a488159da234465ef18e15e6e 100644
+--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
++++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+@@ -538,10 +538,9 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
+ @Override
+ protected void dropCustomDeathLoot(ServerLevel world, DamageSource source, boolean causedByPlayer) {
+ super.dropCustomDeathLoot(world, source, causedByPlayer);
+- ItemEntity entityitem = this.spawnAtLocation((ItemLike) Items.NETHER_STAR);
+-
++ ItemEntity entityitem = this.spawnAtLocation(new net.minecraft.world.item.ItemStack(Items.NETHER_STAR), 0, ItemEntity::setExtendedLifetime); // Paper - Restore vanilla drops behavior; spawnAtLocation returns null so modify the item entity with a consumer
+ if (entityitem != null) {
+- entityitem.setExtendedLifetime();
++ entityitem.setExtendedLifetime(); // Paper - diff on change
+ }
+
+ }
+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 5bcb9a53ebebeef4bd6ec2458df4b63002ebd804..2f398750bfee5758ad8b1367b6fc14364e4de776 100644
+--- a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
++++ b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
+@@ -621,7 +621,7 @@ public class ArmorStand extends LivingEntity {
+ ItemStack itemstack = new ItemStack(Items.ARMOR_STAND);
+
+ itemstack.set(DataComponents.CUSTOM_NAME, this.getCustomName());
+- this.drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
++ this.drops.add(new DefaultDrop(itemstack, stack -> Block.popResource(this.level(), this.blockPosition(), stack))); // CraftBukkit - add to drops // Paper - Restore vanilla drops behavior
+ return this.brokenByAnything(world, damageSource); // Paper
+ }
+
+@@ -635,7 +635,7 @@ public class ArmorStand extends LivingEntity {
+ for (i = 0; i < this.handItems.size(); ++i) {
+ itemstack = (ItemStack) this.handItems.get(i);
+ if (!itemstack.isEmpty()) {
+- this.drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // CraftBukkit - add to drops // Paper - mirror so we can destroy it later - though this call site was safe
++ this.drops.add(new DefaultDrop(itemstack, stack -> Block.popResource(this.level(), this.blockPosition().above(), stack))); // CraftBukkit - add to drops // Paper - Restore vanilla drops behavior; mirror so we can destroy it later - though this call site was safe & spawn drops correctly
+ this.handItems.set(i, ItemStack.EMPTY);
+ }
+ }
+@@ -643,7 +643,7 @@ public class ArmorStand extends LivingEntity {
+ for (i = 0; i < this.armorItems.size(); ++i) {
+ itemstack = (ItemStack) this.armorItems.get(i);
+ if (!itemstack.isEmpty()) {
+- this.drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // CraftBukkit - add to drops // Paper - mirror so we can destroy it later - though this call site was safe
++ this.drops.add(new DefaultDrop(itemstack, stack -> Block.popResource(this.level(), this.blockPosition().above(), stack))); // CraftBukkit - add to drops // Paper - Restore vanilla drops behavior; mirror so we can destroy it later - though this call site was safe & spawn drops correctly
+ this.armorItems.set(i, ItemStack.EMPTY);
+ }
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+index 2690c471b819f8308f6db44150025dfa323d4e0c..0d6cdb6b0dfd84f619a5e43150165b4606a96bcd 100644
+--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
++++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+@@ -975,18 +975,24 @@ public class CraftEventFactory {
+ }
+
+ public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource) {
+- return CraftEventFactory.callEntityDeathEvent(victim, damageSource, new ArrayList<org.bukkit.inventory.ItemStack>(0));
++ return CraftEventFactory.callEntityDeathEvent(victim, damageSource, new ArrayList<>(0)); // Paper - Restore vanilla drops behavior
+ }
+
+- public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource, List<org.bukkit.inventory.ItemStack> drops) {
++ public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource, List<Entity.DefaultDrop> drops) { // Paper - Restore vanilla drops behavior
+ // Paper start
+ return CraftEventFactory.callEntityDeathEvent(victim, damageSource, drops, com.google.common.util.concurrent.Runnables.doNothing());
+ }
+- public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource, List<org.bukkit.inventory.ItemStack> drops, Runnable lootCheck) {
++
++ private static final java.util.function.Function<org.bukkit.inventory.ItemStack, Entity.DefaultDrop> FROM_FUNCTION = stack -> {
++ if (stack == null) return null;
++ return new Entity.DefaultDrop(CraftItemType.bukkitToMinecraft(stack.getType()), stack, null);
++ };
++
++ public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource, List<Entity.DefaultDrop> drops, Runnable lootCheck) { // Paper
+ // Paper end
+ CraftLivingEntity entity = (CraftLivingEntity) victim.getBukkitEntity();
+ CraftDamageSource bukkitDamageSource = new CraftDamageSource(damageSource);
+- EntityDeathEvent event = new EntityDeathEvent(entity, bukkitDamageSource, drops, victim.getExpReward(damageSource.getEntity()));
++ EntityDeathEvent event = new EntityDeathEvent(entity, bukkitDamageSource, new io.papermc.paper.util.TransformingRandomAccessList<>(drops, Entity.DefaultDrop::stack, FROM_FUNCTION), victim.getExpReward(damageSource.getEntity())); // Paper - Restore vanilla drops behavior
+ populateFields(victim, event); // Paper - make cancellable
+ CraftWorld world = (CraftWorld) entity.getWorld();
+ Bukkit.getServer().getPluginManager().callEvent(event);
+@@ -1000,20 +1006,24 @@ public class CraftEventFactory {
+ victim.expToDrop = event.getDroppedExp();
+ lootCheck.run(); // Paper - advancement triggers before destroying items
+
+- for (org.bukkit.inventory.ItemStack stack : event.getDrops()) {
++ // Paper start - Restore vanilla drops behavior
++ for (Entity.DefaultDrop drop : drops) {
++ if (drop == null) continue;
++ final org.bukkit.inventory.ItemStack stack = drop.stack();
++ // Paper end - Restore vanilla drops behavior
+ if (stack == null || stack.getType() == Material.AIR || stack.getAmount() == 0) continue;
+
+- world.dropItem(entity.getLocation(), stack); // Paper - note: dropItem already clones due to this being bukkit -> NMS
++ drop.runConsumer(world, entity.getLocation()); // Paper - Restore vanilla drops behavior
+ if (stack instanceof CraftItemStack) stack.setAmount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe, but don't nuke bukkit stacks of manually added items
+ }
+
+ return event;
+ }
+
+- public static PlayerDeathEvent callPlayerDeathEvent(ServerPlayer victim, DamageSource damageSource, List<org.bukkit.inventory.ItemStack> drops, net.kyori.adventure.text.Component deathMessage, boolean keepInventory) { // Paper - Adventure
++ public static PlayerDeathEvent callPlayerDeathEvent(ServerPlayer victim, DamageSource damageSource, List<Entity.DefaultDrop> drops, net.kyori.adventure.text.Component deathMessage, boolean keepInventory) { // Paper - Adventure & Restore vanilla drops behavior
+ CraftPlayer entity = victim.getBukkitEntity();
+ CraftDamageSource bukkitDamageSource = new CraftDamageSource(damageSource);
+- PlayerDeathEvent event = new PlayerDeathEvent(entity, bukkitDamageSource, drops, victim.getExpReward(damageSource.getEntity()), 0, deathMessage);
++ PlayerDeathEvent event = new PlayerDeathEvent(entity, bukkitDamageSource, new io.papermc.paper.util.TransformingRandomAccessList<>(drops, Entity.DefaultDrop::stack, FROM_FUNCTION), victim.getExpReward(damageSource.getEntity()), 0, deathMessage); // Paper - Restore vanilla drops behavior
+ event.setKeepInventory(keepInventory);
+ event.setKeepLevel(victim.keepLevel); // SPIGOT-2222: pre-set keepLevel
+ populateFields(victim, event); // Paper - make cancellable
+@@ -1031,16 +1041,14 @@ public class CraftEventFactory {
+ victim.expToDrop = event.getDroppedExp();
+ victim.newExp = event.getNewExp();
+
+- for (org.bukkit.inventory.ItemStack stack : event.getDrops()) {
++ // Paper start - Restore vanilla drops behavior
++ for (Entity.DefaultDrop drop : drops) {
++ if (drop == null) continue;
++ final org.bukkit.inventory.ItemStack stack = drop.stack();
++ // Paper end - Restore vanilla drops behavior
+ if (stack == null || stack.getType() == Material.AIR) continue;
+
+- if (stack instanceof CraftItemStack craftItemStack && craftItemStack.isForInventoryDrop()) {
+- victim.drop(CraftItemStack.asNMSCopy(stack), true, false, false); // SPIGOT-7800, SPIGOT-7801: Vanilla Behaviour for Player Inventory dropped items
+- } else {
+- victim.forceDrops = true;
+- victim.spawnAtLocation(CraftItemStack.asNMSCopy(stack)); // SPIGOT-7806: Vanilla Behaviour for items not related to Player Inventory dropped items
+- victim.forceDrops = false;
+- }
++ drop.runConsumer(entity.getWorld(), entity.getLocation()); // Paper - Restore vanilla drops behavior
+ }
+
+ return event;
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+index c5a09f086d35f84c0a30266f78e06e2dfb5603e6..f33742ee06e8443a5f5adaaa987d7523dc193b5a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+@@ -130,27 +130,6 @@ public final class CraftItemStack extends ItemStack {
+ this.setItemMeta(itemMeta);
+ }
+
+- /**
+- * Gets if the item is marked as an inventory drop in death events.
+- *
+- * @return true if the item is marked as an inventory drop
+- */
+- @ApiStatus.Internal
+- public boolean isForInventoryDrop() {
+- return this.isForInventoryDrop;
+- }
+-
+- /**
+- * Marks this item as an inventory drop in death events.
+- *
+- * @return the ItemStack marked as an inventory drop
+- */
+- @ApiStatus.Internal
+- public ItemStack markForInventoryDrop() {
+- this.isForInventoryDrop = true;
+- return this;
+- }
+-
+ @Override
+ public MaterialData getData() {
+ return this.handle != null ? CraftMagicNumbers.getMaterialData(this.handle.getItem()) : super.getData();