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"It was from a different time before books were as jank as they are now. As time has gone on they've only proven to be worse and worse."
88 lines
4.1 KiB
Diff
88 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <spottedleaf@users.noreply.github.com>
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Date: Fri, 4 Jun 2021 17:06:52 -0400
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Subject: [PATCH] Fix dangerous end portal logic
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End portals could teleport entities during move calls. Stupid
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logic given the caller will never expect that kind of thing,
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and will result in all kinds of dupes.
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Move the tick logic into the post tick, where portaling was
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designed to happen in the first place.
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 145b0205b9777c21f51b24022b2d7a127c26fa0f..a73059437a65768565a2269e60fbca8ba6ab5253 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -361,6 +361,37 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
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}
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// Paper end - optimise entity tracking
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+ // Paper start - make end portalling safe
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+ public BlockPos portalBlock;
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+ public ServerLevel portalWorld;
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+ public void tickEndPortal() {
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+ BlockPos pos = this.portalBlock;
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+ ServerLevel world = this.portalWorld;
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+ this.portalBlock = null;
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+ this.portalWorld = null;
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+
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+ if (pos == null || world == null || world != this.level) {
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+ return;
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+ }
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+
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+ if (this.isPassenger() || this.isVehicle() || !this.canChangeDimensions() || this.isRemoved() || !this.valid || !this.isAlive()) {
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+ return;
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+ }
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+
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+ ResourceKey<Level> resourcekey = world.getTypeKey() == DimensionType.END_LOCATION ? Level.OVERWORLD : Level.END; // CraftBukkit - SPIGOT-6152: send back to main overworld in custom ends
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+ ServerLevel worldserver = world.getServer().getLevel(resourcekey);
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+
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+ 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()));
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+ event.callEvent();
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+
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+ if (this instanceof ServerPlayer) {
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+ ((ServerPlayer)this).changeDimension(worldserver, PlayerTeleportEvent.TeleportCause.END_PORTAL);
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+ return;
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+ }
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+ this.teleportTo(worldserver, null);
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+ }
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+ // Paper end - make end portalling safe
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+
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public Entity(EntityType<?> type, Level world) {
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this.id = Entity.ENTITY_COUNTER.incrementAndGet();
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this.passengers = ImmutableList.of();
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@@ -2508,6 +2539,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
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}
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this.processPortalCooldown();
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+ this.tickEndPortal(); // Paper - make end portalling safe
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}
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}
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diff --git a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
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index 739c9c3a49fd3893ac39962a02a5e3620dc4fe06..62c2f947a77570228dfdf4dae16c64eb97ee2f40 100644
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--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
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@@ -53,16 +53,10 @@ public class EndPortalBlock extends BaseEntityBlock {
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// return; // CraftBukkit - always fire event in case plugins wish to change it
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}
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- // CraftBukkit start - Entity in portal
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- EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
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- world.getCraftServer().getPluginManager().callEvent(event);
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-
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- if (entity instanceof ServerPlayer) {
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- ((ServerPlayer) entity).changeDimension(worldserver, PlayerTeleportEvent.TeleportCause.END_PORTAL);
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- return;
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- }
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- // CraftBukkit end
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- entity.changeDimension(worldserver);
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+ // Paper start - move all of this logic into portal tick
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+ entity.portalWorld = ((ServerLevel)world);
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+ entity.portalBlock = pos.immutable();
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+ // Paper end - move all of this logic into portal tick
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}
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}
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