Paper/Spigot-Server-Patches/0260-Prevent-Saving-Bad-entities-to-chunks.patch
Aikar 57dd397155
Updated Upstream (Bukkit/CraftBukkit)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
b999860d SPIGOT-2304: Add LootGenerateEvent

CraftBukkit Changes:
77fd87e4 SPIGOT-2304: Implement LootGenerateEvent
a1a705ee SPIGOT-5566: Doused campfires & fires should call EntityChangeBlockEvent
41712edd SPIGOT-5707: PersistentDataHolder not Persistent on API dropped Item
2020-05-01 18:03:57 -04:00

123 lines
5.0 KiB
Diff

From eb17a9e3291d12df5f3a007c85644bcdbdaca564 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 26 Jul 2018 00:11:12 -0400
Subject: [PATCH] Prevent Saving Bad entities to chunks
See https://github.com/PaperMC/Paper/issues/1223
Minecraft is saving invalid entities to the chunk files.
Avoid saving bad data, and also make improvements to handle
loading these chunks. Any invalid entity will be instant killed,
so lets avoid adding it to the world...
This lets us be safer about the dupe UUID resolver too, as now
we can ignore instant killed entities and avoid risk of duplicating
an invalid entity.
This should reduce log occurrences of dupe uuid messages.
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index 13d99de2cd..f54572773c 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -300,6 +300,7 @@ public class ChunkRegionLoader {
nbttagcompound1.set("TileEntities", nbttaglist1);
NBTTagList nbttaglist2 = new NBTTagList();
+ java.util.List<Entity> toUpdate = new java.util.ArrayList<>(); // Paper
if (ichunkaccess.getChunkStatus().getType() == ChunkStatus.Type.LEVELCHUNK) {
Chunk chunk = (Chunk) ichunkaccess;
@@ -311,13 +312,28 @@ public class ChunkRegionLoader {
while (iterator1.hasNext()) {
Entity entity = (Entity) iterator1.next();
NBTTagCompound nbttagcompound4 = new NBTTagCompound();
-
+ // Paper start
+ if ((int) Math.floor(entity.locX()) >> 4 != chunk.getPos().x || (int) Math.floor(entity.locZ()) >> 4 != chunk.getPos().z) {
+ toUpdate.add(entity);
+ continue;
+ }
+ if (entity.dead || hasPlayerPassenger(entity)) {
+ continue;
+ }
+ // Paper end
if (entity.d(nbttagcompound4)) {
chunk.d(true);
nbttaglist2.add(nbttagcompound4);
}
}
}
+
+ // Paper start - move entities to the correct chunk
+ for (Entity entity : toUpdate) {
+ worldserver.chunkCheck(entity);
+ }
+ // Paper end
+
} else {
ProtoChunk protochunk = (ProtoChunk) ichunkaccess;
@@ -373,6 +389,19 @@ public class ChunkRegionLoader {
nbttagcompound1.set("Structures", a(chunkcoordintpair, ichunkaccess.h(), ichunkaccess.v()));
return nbttagcompound;
}
+ // Paper start - this is saved with the player
+ private static boolean hasPlayerPassenger(Entity entity) {
+ for (Entity passenger : entity.passengers) {
+ if (passenger instanceof EntityPlayer) {
+ return true;
+ }
+ if (hasPlayerPassenger(passenger)) {
+ return true;
+ }
+ }
+ return false;
+ }
+ // Paper end
public static ChunkStatus.Type a(@Nullable NBTTagCompound nbttagcompound) {
if (nbttagcompound != null) {
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 6ce7f77a5e..87762b1725 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1085,6 +1085,7 @@ public class WorldServer extends World {
List[] aentityslice = chunk.getEntitySlices(); // Spigot
int i = aentityslice.length;
+ java.util.List<Entity> toMoveChunks = new java.util.ArrayList<>(); // Paper
for (int j = 0; j < i; ++j) {
List<Entity> entityslice = aentityslice[j]; // Spigot
Iterator iterator = entityslice.iterator();
@@ -1109,11 +1110,25 @@ public class WorldServer extends World {
throw (IllegalStateException) SystemUtils.c(new IllegalStateException("Removing entity while ticking!"));
}
+ // Paper start - move out entities that shouldn't be in this chunk before it unloads
+ if (!entity.dead && (int) Math.floor(entity.locX()) >> 4 != chunk.getPos().x || (int) Math.floor(entity.locZ()) >> 4 != chunk.getPos().z) {
+ toMoveChunks.add(entity);
+ continue;
+ }
+ // Paper end
+
this.entitiesById.remove(entity.getId());
this.unregisterEntity(entity);
+
+ if (entity.dead) iterator.remove(); // Paper - don't save dead entities during unload
}
}
}
+ // Paper start - move out entities that shouldn't be in this chunk before it unloads
+ for (Entity entity : toMoveChunks) {
+ this.chunkCheck(entity);
+ }
+ // Paper end
}
--
2.26.2