PaperMC/patches/server/0670-Don-t-allow-vehicle-movement-from-players-while-tele.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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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Mon, 14 Mar 2022 12:35:37 -0700
Subject: [PATCH] Don't allow vehicle movement from players while teleporting
Bring the vehicle move packet behavior in line with the
regular player move packet.
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 7f1e0c6801a1d8b0857fba9826fc56e30bd41497..9656e15aa15735e9bd6ac4e2ad7aa8aa66140b9a 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -489,6 +489,11 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
this.disconnect((Component) Component.translatable("multiplayer.disconnect.invalid_vehicle_movement"), org.bukkit.event.player.PlayerKickEvent.Cause.INVALID_VEHICLE_MOVEMENT); // Paper - kick event cause
} else if (!this.updateAwaitingTeleport()) {
Entity entity = this.player.getRootVehicle();
+ // Paper start - Don't allow vehicle movement from players while teleporting
+ if (this.awaitingPositionFromClient != null || this.player.isImmobile() || entity.isRemoved()) {
+ return;
+ }
+ // Paper end - Don't allow vehicle movement from players while teleporting
if (entity != this.player && entity.getControllingPassenger() == this.player && entity == this.lastVehicle) {
ServerLevel worldserver = this.player.serverLevel();