104 lines
6.2 KiB
Diff
104 lines
6.2 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/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
|
|
index 465abc3d4fe2386aa57565e4441fac7f55e26924..3ff93f1498896ec1c92eb8273fb1e656a2cd8179 100644
|
|
--- a/src/main/java/net/minecraft/server/Entity.java
|
|
+++ b/src/main/java/net/minecraft/server/Entity.java
|
|
@@ -1910,11 +1910,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
|
|
} 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
|
|
@@ -2559,6 +2560,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
|
|
@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
|
|
@@ -2662,7 +2669,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
|
|
entity.bukkitEntity = this.getBukkitEntity();
|
|
|
|
if (this instanceof EntityInsentient) {
|
|
- ((EntityInsentient)this).unleash(true, false); // Unleash to prevent duping of leads.
|
|
+ ((EntityInsentient)this).unleash(true, true); // Paper drop lead
|
|
}
|
|
// CraftBukkit end
|
|
}
|
|
@@ -2683,7 +2690,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
|
|
}
|
|
|
|
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/server/EntityArmorStand.java b/src/main/java/net/minecraft/server/EntityArmorStand.java
|
|
index 51e9f4a6e09474a7489d2872a800308ee3f02e46..250bccee4a27801b41c50d59e93396c696ab6974 100644
|
|
--- a/src/main/java/net/minecraft/server/EntityArmorStand.java
|
|
+++ b/src/main/java/net/minecraft/server/EntityArmorStand.java
|
|
@@ -557,7 +557,7 @@ 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);
|
|
}
|
|
}
|
|
@@ -565,7 +565,7 @@ 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 4b8ea4e56efb4c8bfe969c9c1628b5d69aa0c4d9..d4b77d70bfc91339346689ad58f585856633007b 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
|
|
@@ -788,7 +788,8 @@ 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;
|