PaperMC/patches/server/0702-Fix-dangerous-end-portal-logic.patch
Nassim Jahnke 789bc79280
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#6457)
Upstream has released updates that appear 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:
c9a46ebf #653: Add World#spawn with randomizeData parameter
e49c2e3a Damageable should extend ItemMeta
01ff04f4 SPIGOT-5880, SPIGOT-5567: New ChunkGenerator API
ca5b4b1a SPIGOT-6697: Deprecate generateTree with BlockChangeDelegate as it does not handle tiles

CraftBukkit Changes:
7c8bbcbe SPIGOT-6716: Preserve the order of stored enchantments of enchanted books.
18027d02 #914: Add World#spawn with randomizeData parameter
3cad0316 SPIGOT-6714: Don't fire PlayerBucketEvent when empty
8c6d60cf Fix server crash with BlockPopulator when entities are at a negative chunk border
4f6bcc84 SPIGOT-5880, SPIGOT-5567: New ChunkGenerator API
78d5b35b SPIGOT-6697: Restore generateTree with BlockChangeDelegate behaviour
15792f0d Rebuild patch
c949675e SPIGOT-6713: Cancelling EntityTransformEvent Causes Deceased Slimes To Not Despawn
a955f15c Fix issues with new ChunkGenerator API
a0a37f41 SPIGOT-6630: Replacing an enchantment on an item creates a conflict error

Spigot Changes:
b166a49b Rebuild patches
3c1fc60a SPIGOT-6693: Composters only take in one item at custom hopper speeds
2021-08-25 09:59:26 +02:00

87 lines
4.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@users.noreply.github.com>
Date: Fri, 4 Jun 2021 17:06:52 -0400
Subject: [PATCH] Fix dangerous end portal logic
End portals could teleport entities during move calls. Stupid
logic given the caller will never expect that kind of thing,
and will result in all kinds of dupes.
Move the tick logic into the post tick, where portaling was
designed to happen in the first place.
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index cf22785bfd4e5bb212f6fe601d38aba982fb8d4e..225a277e5f327b974ae932ab55117aeb9a230a0d 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -363,6 +363,37 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
}
// Paper end - optimise entity tracking
+ // Paper start - make end portalling safe
+ public BlockPos portalBlock;
+ public ServerLevel portalWorld;
+ public void tickEndPortal() {
+ BlockPos pos = this.portalBlock;
+ ServerLevel world = this.portalWorld;
+ this.portalBlock = null;
+ this.portalWorld = null;
+
+ if (pos == null || world == null || world != this.level) {
+ return;
+ }
+
+ if (this.isPassenger() || this.isVehicle() || !this.canChangeDimensions() || this.isRemoved() || !this.valid || !this.isAlive()) {
+ return;
+ }
+
+ ResourceKey<Level> resourcekey = world.getTypeKey() == DimensionType.END_LOCATION ? Level.OVERWORLD : Level.END; // CraftBukkit - SPIGOT-6152: send back to main overworld in custom ends
+ ServerLevel worldserver = world.getServer().getLevel(resourcekey);
+
+ org.bukkit.event.entity.EntityPortalEnterEvent event = new org.bukkit.event.entity.EntityPortalEnterEvent(this.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
+ event.callEvent();
+
+ if (this instanceof ServerPlayer) {
+ ((ServerPlayer)this).changeDimension(worldserver, PlayerTeleportEvent.TeleportCause.END_PORTAL);
+ return;
+ }
+ this.teleportTo(worldserver, null);
+ }
+ // Paper end - make end portalling safe
+
public Entity(EntityType<?> type, Level world) {
this.id = Entity.ENTITY_COUNTER.incrementAndGet();
this.passengers = ImmutableList.of();
@@ -2514,6 +2545,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
}
this.processPortalCooldown();
+ this.tickEndPortal(); // Paper - make end portalling safe
}
}
diff --git a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
index 739c9c3a49fd3893ac39962a02a5e3620dc4fe06..62c2f947a77570228dfdf4dae16c64eb97ee2f40 100644
--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
@@ -53,16 +53,10 @@ public class EndPortalBlock extends BaseEntityBlock {
// return; // CraftBukkit - always fire event in case plugins wish to change it
}
- // CraftBukkit start - Entity in portal
- EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
- world.getCraftServer().getPluginManager().callEvent(event);
-
- if (entity instanceof ServerPlayer) {
- ((ServerPlayer) entity).changeDimension(worldserver, PlayerTeleportEvent.TeleportCause.END_PORTAL);
- return;
- }
- // CraftBukkit end
- entity.changeDimension(worldserver);
+ // Paper start - move all of this logic into portal tick
+ entity.portalWorld = ((ServerLevel)world);
+ entity.portalBlock = pos.immutable();
+ // Paper end - move all of this logic into portal tick
}
}