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Paper/patches/server/0773-Improve-PortalEvents.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation 
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 15 Dec 2022 10:33:39 -0800
Subject: [PATCH] Improve PortalEvents
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 772a759a474a114ccb2f7f83b678708714788e60..6a8a1c22e1bf53df7cf4b14daf9ff1de7017ef8b 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1561,7 +1561,7 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player {
Location enter = this.getBukkitEntity().getLocation();
PositionMoveRotation absolutePosition = PositionMoveRotation.calculateAbsolute(PositionMoveRotation.of(this), PositionMoveRotation.of(teleportTarget), teleportTarget.relatives());
- Location exit = (worldserver == null) ? null : CraftLocation.toBukkit(absolutePosition.position(), worldserver.getWorld(), absolutePosition.yRot(), absolutePosition.xRot());
+ Location exit = /* (worldserver == null) ? null : // Paper - always non-null */CraftLocation.toBukkit(absolutePosition.position(), worldserver.getWorld(), absolutePosition.yRot(), absolutePosition.xRot());
PlayerTeleportEvent tpEvent = new PlayerTeleportEvent(this.getBukkitEntity(), enter, exit, teleportTarget.cause());
// Paper start - gateway-specific teleport event
if (this.portalProcess != null && this.portalProcess.isSamePortal(((net.minecraft.world.level.block.EndGatewayBlock) net.minecraft.world.level.block.Blocks.END_GATEWAY)) && this.serverLevel().getBlockEntity(this.portalProcess.getEntryPosition()) instanceof net.minecraft.world.level.block.entity.TheEndGatewayBlockEntity theEndGatewayBlockEntity) {
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index eff6d23c12d65b9c82573a9bbad721baaa1029e3..4135eeab128fc989d9357dee59c779d2812106e8 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3743,7 +3743,15 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
org.bukkit.entity.Entity bukkitEntity = entity.getBukkitEntity();
Location enter = bukkitEntity.getLocation();
- EntityPortalEvent event = new EntityPortalEvent(bukkitEntity, enter, exit, searchRadius, true, creationRadius);
+ // Paper start
+ final org.bukkit.PortalType portalType = switch (cause) {
+ case END_PORTAL -> org.bukkit.PortalType.ENDER;
+ case NETHER_PORTAL -> org.bukkit.PortalType.NETHER;
+ case END_GATEWAY -> org.bukkit.PortalType.END_GATEWAY; // not actually used yet
+ default -> org.bukkit.PortalType.CUSTOM;
+ };
+ EntityPortalEvent event = new EntityPortalEvent(bukkitEntity, enter, exit, searchRadius, true, creationRadius, portalType);
+ // Paper end
event.getEntity().getServer().getPluginManager().callEvent(event);
if (event.isCancelled() || event.getTo() == null || event.getTo().getWorld() == null || !entity.isAlive()) {
return null;
diff --git a/src/main/java/net/minecraft/world/level/block/EndGatewayBlock.java b/src/main/java/net/minecraft/world/level/block/EndGatewayBlock.java
index bb4800c60ac05f2db8821737b2b884ea99b64799..a7a21f071161fb7e73a046717d2462f871ab653c 100644
--- a/src/main/java/net/minecraft/world/level/block/EndGatewayBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/EndGatewayBlock.java
@@ -94,6 +94,10 @@ public class EndGatewayBlock extends BaseEntityBlock implements Portal {
protected void entityInside(BlockState state, Level world, BlockPos pos, Entity entity) {
if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper - Add EntityInsideBlockEvent
if (entity.canUsePortal(false)) {
+ // Paper start - call EntityPortalEnterEvent
+ org.bukkit.event.entity.EntityPortalEnterEvent event = new org.bukkit.event.entity.EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()), org.bukkit.PortalType.END_GATEWAY); // Paper - add portal type
+ if (!event.callEvent()) return;
+ // Paper end - call EntityPortalEnterEvent
BlockEntity tileentity = world.getBlockEntity(pos);
if (!world.isClientSide && tileentity instanceof TheEndGatewayBlockEntity) {
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 6ed6c2123ed4c54f191ed8cf6da72109fb95eb69..4aa14f975e1ceedf3d4a427e0daefb58b12fcafe 100644
--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
@@ -71,8 +71,9 @@ public class EndPortalBlock extends BaseEntityBlock implements Portal {
if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper - Add EntityInsideBlockEvent
if (entity.canUsePortal(false)) {
// CraftBukkit start - Entity in portal
- EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
+ EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()), org.bukkit.PortalType.ENDER); // Paper - add portal type
world.getCraftServer().getPluginManager().callEvent(event);
+ if (event.isCancelled()) return; // Paper - make cancellable
// CraftBukkit end
if (!world.isClientSide && world.dimension() == Level.END && entity instanceof ServerPlayer) {
ServerPlayer entityplayer = (ServerPlayer) entity;
@@ -95,7 +96,7 @@ public class EndPortalBlock extends BaseEntityBlock implements Portal {
ServerLevel worldserver1 = world.getServer().getLevel(resourcekey);
if (worldserver1 == null) {
- return new TeleportTransition(PlayerTeleportEvent.TeleportCause.END_PORTAL); // CraftBukkit- always fire event in case plugins wish to change it
+ return null; // Paper - keep previous behavior of not firing PlayerTeleportEvent if the target world doesn't exist
} else {
boolean flag = resourcekey == Level.END;
BlockPos blockposition1 = flag ? ServerLevel.END_SPAWN_POINT : worldserver1.getSharedSpawnPos();
diff --git a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
index fb361eac03c16ecee02219ff0524cce2292c7976..2b31bf586c1c0bd393d2aa8d0b6635dd9f22f21c 100644
--- a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
@@ -118,8 +118,9 @@ public class NetherPortalBlock extends Block implements Portal {
if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper - Add EntityInsideBlockEvent
if (entity.canUsePortal(false)) {
// CraftBukkit start - Entity in portal
- EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
+ EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()), org.bukkit.PortalType.NETHER); // Paper - add portal type
world.getCraftServer().getPluginManager().callEvent(event);
+ if (event.isCancelled()) return; // Paper - make cancellable
// CraftBukkit end
entity.setAsInsidePortal(this, pos);
}
@@ -151,7 +152,7 @@ public class NetherPortalBlock extends Block implements Portal {
// Paper end - Add EntityPortalReadyEvent
if (worldserver1 == null) {
- return new TeleportTransition(PlayerTeleportEvent.TeleportCause.NETHER_PORTAL); // always fire event in case plugins wish to change it
+ return null; // Paper - keep previous behavior of not firing PlayerTeleportEvent if the target world doesn't exist
} else {
boolean flag = worldserver1.getTypeKey() == LevelStem.NETHER;
// CraftBukkit end
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