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Paper/Spigot-Server-Patches/0261-Prevent-Saving-Bad-entities-to-chunks.patch
Aikar bdcc31caad
Let invalid positioned entities clean up previous chunk by the chunkCheck
I had did a few of the operations myself, which would have broken chunkCheck
from doing it itself, which would leave some state left in the original chunk
and thats not good....
2020-04-12 22:55:43 -04:00

123 Zeilen
5.0 KiB
Diff

From ac56ad751d4d82d4212eabc7f6dcdbc47b857bb7 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 4af5a230b..83bcef7e6 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 6ce7f77a5..87762b172 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
}
--
2.25.1