Paper/patches/server/0866-Fix-Entity-Position-Desync.patch
Nassim Jahnke 1358d1e914
Updated Upstream (CraftBukkit/Spigot) (#7580)
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:
881e06e5 PR-725: Add Item Unlimited Lifetime APIs

CraftBukkit Changes:
74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall
64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn
2d760831 Increase outdated build delay
9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel
fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent
59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta

Spigot Changes:
ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue
e19ddabd PR-1011: Add Item Unlimited Lifetime APIs
34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
2022-03-13 08:47:54 +01:00

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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 also fixes desync caused be relatively teleporting paintings.
This is caused by the fact that setPacketCoordinates isn't called on paintings when they are spawned (unlike every other entity, like XP orbs)
on the client for some reason. This causes it to be relatively teleported to the world origin (0,0,0).
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index fe29bf349b987d633b185b9d44d221053fa2cc83..1092ba200a945d8d70e48f956535f56e2743302d 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -164,13 +164,14 @@ public class ServerEntity {
}
// CraftBukkit end
- if (this.tickCount > 0 || this.entity instanceof AbstractArrow) {
+ if (true || this.tickCount > 0 || this.entity instanceof AbstractArrow) { // Paper - Always update position
// Paper start - remove allocation of Vec3D here
long k = ClientboundMoveEntityPacket.entityToPacket(vec3d_dx);
long l = ClientboundMoveEntityPacket.entityToPacket(vec3d_dy);
long i1 = ClientboundMoveEntityPacket.entityToPacket(vec3d_dz);
// Paper end - remove allocation of Vec3D here
boolean flag4 = k < -32768L || k > 32767L || l < -32768L || l > 32767L || i1 < -32768L || i1 > 32767L;
+ if (this.entity instanceof net.minecraft.world.entity.decoration.Painting) {flag4 = true;} // Paper - Always send exact position for paintings
if (!flag4 && this.teleportDelay <= 400 && !this.wasRiding && this.wasOnGround == this.entity.isOnGround() && !(com.destroystokyo.paper.PaperConfig.sendFullPosForHardCollidingEntities && this.entity.hardCollides())) { // Paper - send full pos for hard colliding entities to prevent collision problems due to desync
if ((!flag2 || !flag3) && !(this.entity instanceof AbstractArrow)) {