PaperMC/patches/server/0711-Fix-Entity-Position-Desync.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

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1.4 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Thu, 23 Dec 2021 23:59:12 -0500
Subject: [PATCH] Fix Entity Position Desync
If entities were teleported in the first tick it would not be send to the client.
This excludes hanging entities, as this fix caused problematic behavior due to them having their own
position field.
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 062225ac8b5fbc44290352d78b215640691f3c23..3608257fabec6ad7edb056def8a6f36c50b4871e 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -171,7 +171,7 @@ public class ServerEntity {
boolean flag4 = false;
boolean flag5 = false;
- if (this.tickCount > 0 || this.entity instanceof AbstractArrow) {
+ if (!(this.entity instanceof net.minecraft.world.entity.decoration.HangingEntity) || this.tickCount > 0 || this.entity instanceof AbstractArrow) { // Paper - Always update position to fix first-tick teleports
long k = this.positionCodec.encodeX(vec3d);
long l = this.positionCodec.encodeY(vec3d);
long i1 = this.positionCodec.encodeZ(vec3d);