mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-03 06:40:19 +08:00
118 lines
7.0 KiB
Diff
118 lines
7.0 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 numerous item duplication issues 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 167c9eb09a2fc9ac6db19b90723feacee52ec39e..b57888b2b53a8cf6d1e8af0f6e779bbcf748cd61 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/Entity.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
|
|
@@ -1969,11 +1969,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
|
|
} else {
|
|
// CraftBukkit start - Capture drops for death event
|
|
if (this instanceof EntityLiving && !((EntityLiving) this).forceDrops) {
|
|
- ((EntityLiving) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack));
|
|
+ ((EntityLiving) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // Paper - mirror so we can destroy it later
|
|
return null;
|
|
}
|
|
// CraftBukkit end
|
|
- EntityItem entityitem = new EntityItem(this.world, this.locX(), this.locY() + (double) f, this.locZ(), itemstack);
|
|
+ EntityItem entityitem = new EntityItem(this.world, this.locX(), this.locY() + (double) f, this.locZ(), itemstack.cloneItemStack()); // Paper - clone so we can destroy original
|
|
+ itemstack.setCount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe
|
|
|
|
entityitem.defaultPickupDelay();
|
|
// CraftBukkit start
|
|
@@ -2621,6 +2622,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
|
|
@Nullable
|
|
public Entity teleportTo(WorldServer worldserver, BlockPosition location) {
|
|
// CraftBukkit end
|
|
+ // Paper start - fix bad state entities causing dupes
|
|
+ if (!isAlive() || !valid) {
|
|
+ LOGGER.warn("Illegal Entity Teleport " + this + " to " + worldserver + ":" + location, new Throwable());
|
|
+ return null;
|
|
+ }
|
|
+ // Paper end
|
|
if (this.world instanceof WorldServer && !this.dead) {
|
|
this.world.getMethodProfiler().enter("changeDimension");
|
|
// CraftBukkit start
|
|
@@ -2641,6 +2648,11 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
|
|
// CraftBukkit end
|
|
|
|
this.world.getMethodProfiler().exitEnter("reloading");
|
|
+ // Paper start - Change lead drop timing to prevent dupe
|
|
+ if (this instanceof EntityInsentient) {
|
|
+ ((EntityInsentient) this).unleash(true, true); // Paper drop lead
|
|
+ }
|
|
+ // Paper end
|
|
Entity entity = this.getEntityType().a((World) worldserver);
|
|
|
|
if (entity != null) {
|
|
@@ -2654,10 +2666,6 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
|
|
// CraftBukkit start - Forward the CraftEntity to the new entity
|
|
this.getBukkitEntity().setHandle(entity);
|
|
entity.bukkitEntity = this.getBukkitEntity();
|
|
-
|
|
- if (this instanceof EntityInsentient) {
|
|
- ((EntityInsentient) this).unleash(true, false); // Unleash to prevent duping of leads.
|
|
- }
|
|
// CraftBukkit end
|
|
}
|
|
|
|
@@ -2782,7 +2790,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
|
|
}
|
|
|
|
public boolean canPortal() {
|
|
- return true;
|
|
+ return isAlive() && valid; // Paper
|
|
}
|
|
|
|
public float a(Explosion explosion, IBlockAccess iblockaccess, BlockPosition blockposition, IBlockData iblockdata, Fluid fluid, float f) {
|
|
diff --git a/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java b/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
|
|
index 69361caebf0d3caa5195b519a16691705ac5e16a..5eb900619951083b9a777b1645cb5495b99968ec 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
|
|
@@ -602,7 +602,7 @@ public class EntityArmorStand extends EntityLiving {
|
|
for (i = 0; i < this.handItems.size(); ++i) {
|
|
itemstack = (ItemStack) this.handItems.get(i);
|
|
if (!itemstack.isEmpty()) {
|
|
- drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
|
|
+ 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.b);
|
|
}
|
|
}
|
|
@@ -610,7 +610,7 @@ public class EntityArmorStand extends EntityLiving {
|
|
for (i = 0; i < this.armorItems.size(); ++i) {
|
|
itemstack = (ItemStack) this.armorItems.get(i);
|
|
if (!itemstack.isEmpty()) {
|
|
- drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
|
|
+ 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.b);
|
|
}
|
|
}
|
|
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
index b1db56faffebbf46ac871f5f77af0d47d7cf4a8f..4fc9d8af25808a53bf479b085c82047ede6c5360 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
@@ -806,7 +806,8 @@ public class CraftEventFactory {
|
|
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;
|