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Paper-Old/patches/server/1027-Fix-entity-tracker-desync-when-new-players-are-added.patch
Bjarne Koll d1a72eac31
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#11405)
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:
1fc1020a PR-1049: Add MenuType API
8ae2e3be PR-1055: Expand riptiding API
cac68bfb SPIGOT-7890: AttributeModifier#getUniqueId() doesn't match the UUID passed to its constructor
7004fcf2 SPIGOT-7886: Fix mistake in AttributeModifier UUID shim
1ac7f950 PR-1054: Add FireworkMeta#hasPower
4cfb565f SPIGOT-7873: Add powered state for skulls

CraftBukkit Changes:
bbb30e7a8 SPIGOT-7894: NPE when sending tile entity update
ba21e9472 SPIGOT-7895: PlayerItemBreakEvent not firing
0fb24bbe0 SPIGOT-7875: Fix PlayerItemConsumeEvent cancellation causing client-side desync
815066449 SPIGOT-7891: Can't remove second ingredient of MerchantRecipe
45c206f2c PR-1458: Add MenuType API
19c8ef9ae SPIGOT-7867: Merchant instanceof AbstractVillager always returns false
4e006d28f PR-1468: Expand riptiding API
bd8aded7d Ignore checks in CraftPlayerProfile for ResolvableProfile used in profile components
8679620b5 SPIGOT-7889: Fix tool component deserialisation without speed and/or correct-for-drops
8d5222691 SPIGOT-7882, PR-1467: Fix conversion of name in Profile Component to empty if it is missing
63f91669a SPIGOT-7887: Remove duplicate ProjectileHitEvent for fireballs
7070de8c8 SPIGOT-7878: Server#getLootTable does not return null on invalid loot table
060ee6cae SPIGOT-7876: Can't kick player or disconnect player in PlayerLoginEvent when checking for cookies
7ccb86cc0 PR-1465: Add FireworkMeta#hasPower
804ad6491 SPIGOT-7873: Add powered state for skulls
f9610cdcb Improve minecart movement

Spigot Changes:
a759b629 Rebuild patches

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
2024-09-15 21:39:53 +02:00

106 Zeilen
6.0 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Tue, 20 Feb 2024 18:24:16 -0800
Subject: [PATCH] Fix entity tracker desync when new players are added to the
tracker
The delta position packet instructs the client to update
the entity position by a position difference. However, this position
difference is relative to the last position in the entity tracker
state, not the last position which has been sent to the player. As
a result, if the last position the player has recorded is different
than the one stored in the entity tracker (which occurs when a new
player is added to an existing entity tracker state) then the sent
position difference will cause a position desync for the client.
We can resolve this problem by either tracking the last position
sent per-player, or by simply resetting the last sent position
in the entity tracker state every time a new player is added.
Resetting the last sent position every time a new player is
added to the tracker is just easier to do, so that is what
this patch does.
This patch also fixes entities appearing to disappear when
teleporting to players by changing the initial position
in the spawn packet to the entities current tracking position.
When teleporting, the spawn packet will contain the old position
which is most likely in an unloaded chunk - which means that the
client will not tick the entity and thus not lerp the entity
from its old position to its new position.
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundAddEntityPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundAddEntityPacket.java
index 854baa554da2215a656f976ae2973341c3b2d61c..792b9a72a610cc512a8920d61013b6ba02f71e47 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundAddEntityPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundAddEntityPacket.java
@@ -42,9 +42,11 @@ public class ClientboundAddEntityPacket implements Packet<ClientGamePacketListen
this(
entity.getId(),
entity.getUUID(),
- entityTrackerEntry.getPositionBase().x(),
- entityTrackerEntry.getPositionBase().y(),
- entityTrackerEntry.getPositionBase().z(),
+ // Paper start - fix entity tracker desync
+ entity.trackingPosition().x(),
+ entity.trackingPosition().y(),
+ entity.trackingPosition().z(),
+ // Paper end - fix entity tracker desync
entityTrackerEntry.getLastSentXRot(),
entityTrackerEntry.getLastSentYRot(),
entity.getType(),
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 21370ed6c7d98d3f3546f0365ac50e5c26ba3bde..af8cb316ac169aa8d98a88765b85bb013b9ba961 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1269,6 +1269,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
this.serverEntity.addPairing(player);
}
// Paper end - entity tracking events
+ this.serverEntity.onPlayerAdd(); // Paper - fix desync when a player is added to the tracker
}
} else if (this.seenBy.remove(player.connection)) {
this.serverEntity.removePairing(player);
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 12d86f27d04bffed8c3844e36b42fbc2f84dacff..8ea2f24695f5dad55e21f238b69442513e7a90c6 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -96,6 +96,13 @@ public class ServerEntity {
this.trackedDataValues = entity.getEntityData().getNonDefaultValues();
}
+ // Paper start - fix desync when a player is added to the tracker
+ private boolean forceStateResync;
+ public void onPlayerAdd() {
+ this.forceStateResync = true;
+ }
+ // Paper end - fix desync when a player is added to the tracker
+
public void sendChanges() {
// Paper start - optimise collisions
if (((ca.spottedleaf.moonrise.patches.chunk_system.entity.ChunkSystemEntity)this.entity).moonrise$isHardColliding()) {
@@ -145,7 +152,7 @@ public class ServerEntity {
}
}
- if (this.tickCount % this.updateInterval == 0 || this.entity.hasImpulse || this.entity.getEntityData().isDirty()) {
+ if (this.forceStateResync || this.tickCount % this.updateInterval == 0 || this.entity.hasImpulse || this.entity.getEntityData().isDirty()) { // Paper - fix desync when a player is added to the tracker
int i;
int j;
@@ -185,7 +192,7 @@ public class ServerEntity {
long i1 = this.positionCodec.encodeZ(vec3d);
boolean flag6 = k < -32768L || k > 32767L || l < -32768L || l > 32767L || i1 < -32768L || i1 > 32767L;
- if (!flag6 && this.teleportDelay <= 400 && !this.wasRiding && this.wasOnGround == this.entity.onGround()) {
+ if (!this.forceStateResync && !flag6 && this.teleportDelay <= 400 && !this.wasRiding && this.wasOnGround == this.entity.onGround()) { // Paper - fix desync when a player is added to the tracker
if ((!flag2 || !flag3) && !(this.entity instanceof AbstractArrow)) {
if (flag2) {
packet1 = new ClientboundMoveEntityPacket.Pos(this.entity.getId(), (short) ((int) k), (short) ((int) l), (short) ((int) i1), this.entity.onGround());
@@ -249,6 +256,7 @@ public class ServerEntity {
}
this.entity.hasImpulse = false;
+ this.forceStateResync = false; // Paper - fix desync when a player is added to the tracker
}
++this.tickCount;