mirror of
https://github.com/PaperMC/Paper.git
synced 2024-08-24 21:53:21 +02:00
The patch does not implement Vanilla forceUpgrade behavior. Specifically, poi/entity conversion and regionfile recreation. The Vanilla force upgrader is also no longer broken by CB, so the bug fixes from this patch are not relevant anymore.
86 lines
5.4 KiB
Diff
86 lines
5.4 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.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
index dbe9df1e1973db133f7c8516256697ef7c968137..7fb9ba3dadb1eca4a1000ea8cf4d13fed2b7db1e 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
@@ -1450,6 +1450,7 @@ 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 4f103f731623a8570238a6867fda1c5f83fca4e4..f16a69775332a08ed0e87d27acd0fc959359694c 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
|
|
@@ -97,6 +97,13 @@ 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() {
|
|
List<Entity> list = this.entity.getPassengers();
|
|
|
|
@@ -141,7 +148,7 @@ 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;
|
|
|
|
@@ -177,13 +184,13 @@ public class ServerEntity {
|
|
boolean flag4 = false;
|
|
boolean flag5 = false;
|
|
|
|
- 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
|
|
+ if (this.forceStateResync || !(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);
|
|
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()&& !(io.papermc.paper.configuration.GlobalConfiguration.get().collisions.sendFullPosForHardCollidingEntities && this.entity.hardCollides())) { // Paper - send full pos for hard colliding entities to prevent collision problems due to desync
|
|
+ if (!this.forceStateResync && !flag6 && this.teleportDelay <= 400 && !this.wasRiding && this.wasOnGround == this.entity.onGround()&& !(io.papermc.paper.configuration.GlobalConfiguration.get().collisions.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)) {
|
|
if (flag2) {
|
|
packet1 = new ClientboundMoveEntityPacket.Pos(this.entity.getId(), (short) ((int) k), (short) ((int) l), (short) ((int) i1), this.entity.onGround());
|
|
@@ -240,6 +247,7 @@ public class ServerEntity {
|
|
}
|
|
|
|
this.entity.hasImpulse = false;
|
|
+ this.forceStateResync = false; // Paper - fix desync when a player is added to the tracker
|
|
}
|
|
|
|
++this.tickCount;
|