geforkt von Mirrors/Paper
c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
157 Zeilen
10 KiB
Diff
157 Zeilen
10 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Sat, 25 Apr 2020 06:46:35 -0400
|
|
Subject: [PATCH] Fix item duplication and teleport issues
|
|
|
|
This notably fixes the newest "Donkey Dupe", but also fixes a lot
|
|
of dupe bugs in general around nether portals and entity world transfer
|
|
|
|
We also fix item duplication generically by anytime we clone an item
|
|
to drop it on the ground, destroy the source item.
|
|
|
|
This avoid an itemstack ever existing twice in the world state pre
|
|
clean up stage.
|
|
|
|
So even if something NEW comes up, it would be impossible to drop the
|
|
same item twice because the source was destroyed.
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
|
|
index d80fd4e2f41583f83c9527ccf4ce80afe851276a..10015beb7a2de890fe27bffde8f55c1dd78ce344 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/Entity.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
|
|
@@ -2515,11 +2515,12 @@ 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.asBukkitCopy(stack));
|
|
+ ((net.minecraft.world.entity.LivingEntity) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(stack)); // Paper - mirror so we can destroy it later
|
|
return null;
|
|
}
|
|
// CraftBukkit end
|
|
- ItemEntity entityitem = new ItemEntity(this.level(), this.getX(), this.getY() + (double) yOffset, this.getZ(), stack);
|
|
+ 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();
|
|
// CraftBukkit start
|
|
@@ -3335,6 +3336,12 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
|
|
public Entity changeDimension(DimensionTransition teleportTarget) {
|
|
Level world = this.level();
|
|
|
|
+ // Paper start - Fix item duplication and teleport issues
|
|
+ if (!this.isAlive() || !this.valid) {
|
|
+ LOGGER.warn("Illegal Entity Teleport " + this + " to " + teleportTarget.newLevel() + ":" + teleportTarget.pos(), new Throwable());
|
|
+ return null;
|
|
+ }
|
|
+ // Paper end - Fix item duplication and teleport issues
|
|
if (world instanceof ServerLevel worldserver) {
|
|
if (!this.isRemoved()) {
|
|
// CraftBukkit start
|
|
@@ -3377,6 +3384,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
|
|
|
|
if (entity2 != null) {
|
|
if (this != entity2) {
|
|
+ // Paper start - Fix item duplication and teleport issues
|
|
+ if (this instanceof Leashable leashable) {
|
|
+ leashable.dropLeash(true, true); // Paper drop lead
|
|
+ }
|
|
+ // Paper end - Fix item duplication and teleport issues
|
|
entity2.restoreFrom(this);
|
|
this.removeAfterChangingDimensions();
|
|
// CraftBukkit start - Forward the CraftEntity to the new entity
|
|
@@ -3452,7 +3464,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
|
|
}
|
|
|
|
public boolean canChangeDimensions(Level from, Level to) {
|
|
- return true;
|
|
+ return this.isAlive() && this.valid; // Paper - Fix item duplication and teleport issues
|
|
}
|
|
|
|
public float getBlockExplosionResistance(Explosion explosion, BlockGetter world, BlockPos pos, BlockState blockState, FluidState fluidState, float max) {
|
|
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
index 42c4adabe451cd32aa362075395a9fcc384ea788..8920099eb488c37b036b7bd97fbd4f7db505c77c 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
@@ -1728,9 +1728,9 @@ public abstract class LivingEntity extends Entity implements Attackable {
|
|
// Paper start
|
|
org.bukkit.event.entity.EntityDeathEvent deathEvent = this.dropAllDeathLoot(worldserver, damageSource);
|
|
if (deathEvent == null || !deathEvent.isCancelled()) {
|
|
- if (this.deathScore >= 0 && entityliving != null) {
|
|
- entityliving.awardKillScore(this, this.deathScore, damageSource);
|
|
- }
|
|
+ // if (this.deathScore >= 0 && entityliving != null) { // Paper - Fix item duplication and teleport issues; moved to be run earlier in #dropAllDeathLoot before destroying the drop items in CraftEventFactory#callEntityDeathEvent
|
|
+ // entityliving.awardKillScore(this, this.deathScore, damageSource);
|
|
+ // }
|
|
// Paper start - clear equipment if event is not cancelled
|
|
if (this instanceof Mob) {
|
|
for (EquipmentSlot slot : this.clearedEquipmentSlots) {
|
|
@@ -1822,8 +1822,13 @@ public abstract class LivingEntity extends Entity implements Attackable {
|
|
this.dropCustomDeathLoot(world, damageSource, flag);
|
|
this.clearEquipmentSlots = prev; // Paper
|
|
}
|
|
- // CraftBukkit start - Call death event
|
|
- org.bukkit.event.entity.EntityDeathEvent deathEvent = CraftEventFactory.callEntityDeathEvent(this, damageSource, this.drops); // Paper
|
|
+ // CraftBukkit start - Call death event // Paper start - call advancement triggers with correct entity equipment
|
|
+ org.bukkit.event.entity.EntityDeathEvent deathEvent = CraftEventFactory.callEntityDeathEvent(this, damageSource, this.drops, () -> {
|
|
+ final LivingEntity entityliving = this.getKillCredit();
|
|
+ if (this.deathScore >= 0 && entityliving != null) {
|
|
+ entityliving.awardKillScore(this, this.deathScore, damageSource);
|
|
+ }
|
|
+ }); // Paper end
|
|
this.postDeathDropItems(deathEvent); // Paper
|
|
this.drops = new ArrayList<>();
|
|
// CraftBukkit end
|
|
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 92bb0c63330ad3a4cb13b2dc655020714e9b1ffd..cc1189c2d7dc57ba8f29aad4ba5d2a07362bcd5b 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
|
|
@@ -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.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
|
|
+ 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.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.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
|
|
+ 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.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 235ac5c12dab593da3a40e348a010ff626ce74a3..26f8a8cb18205bfb9fe9dc557097946987ddcb18 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
@@ -905,6 +905,11 @@ public class CraftEventFactory {
|
|
}
|
|
|
|
public static EntityDeathEvent callEntityDeathEvent(net.minecraft.world.entity.LivingEntity victim, DamageSource damageSource, List<org.bukkit.inventory.ItemStack> drops) {
|
|
+ // 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) {
|
|
+ // Paper end
|
|
CraftLivingEntity entity = (CraftLivingEntity) victim.getBukkitEntity();
|
|
CraftDamageSource bukkitDamageSource = new CraftDamageSource(damageSource);
|
|
EntityDeathEvent event = new EntityDeathEvent(entity, bukkitDamageSource, drops, victim.getExpReward(damageSource.getEntity()));
|
|
@@ -919,11 +924,13 @@ public class CraftEventFactory {
|
|
playDeathSound(victim, event);
|
|
// Paper end
|
|
victim.expToDrop = event.getDroppedExp();
|
|
+ lootCheck.run(); // Paper - advancement triggers before destroying items
|
|
|
|
for (org.bukkit.inventory.ItemStack stack : event.getDrops()) {
|
|
if (stack == null || stack.getType() == Material.AIR || stack.getAmount() == 0) continue;
|
|
|
|
- world.dropItem(entity.getLocation(), stack);
|
|
+ world.dropItem(entity.getLocation(), stack); // Paper - note: dropItem already clones due to this being bukkit -> NMS
|
|
+ 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;
|