64 Zeilen
3.4 KiB
Diff
64 Zeilen
3.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: BillyGalbreath <blake.galbreath@gmail.com>
|
|
Date: Tue, 8 Dec 2020 20:24:52 -0600
|
|
Subject: [PATCH] MC-4: Fix item position desync
|
|
|
|
This fixes item position desync (MC-4) by running the item coordinates
|
|
through the encode/decode methods of the packet that causes the precision
|
|
loss, which forces the server to lose the same precision as the client
|
|
keeping them in sync.
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
index 652d87fc5d566dba8018c81676329f0e0bca471b..c56e7fb18f9a56c8025eb70a524f028b5942da37 100644
|
|
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
@@ -474,4 +474,9 @@ public class PaperConfig {
|
|
private static void trackPluginScoreboards() {
|
|
trackPluginScoreboards = getBoolean("settings.track-plugin-scoreboards", false);
|
|
}
|
|
+
|
|
+ public static boolean fixEntityPositionDesync = true;
|
|
+ private static void fixEntityPositionDesync() {
|
|
+ fixEntityPositionDesync = getBoolean("settings.fix-entity-position-desync", fixEntityPositionDesync);
|
|
+ }
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundMoveEntityPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundMoveEntityPacket.java
|
|
index b30c08bfb8c55161543a4ef09f2e462e0a1fe4ae..ec93f5300cc7d423ec0d292f0f8443f900d72dab 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundMoveEntityPacket.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundMoveEntityPacket.java
|
|
@@ -21,11 +21,11 @@ public abstract class ClientboundMoveEntityPacket implements Packet<ClientGamePa
|
|
protected final boolean hasPos;
|
|
|
|
public static long entityToPacket(double coord) {
|
|
- return Mth.lfloor(coord * 4096.0D);
|
|
+ return Mth.lfloor(coord * 4096.0D); // Paper - check ItemEntity#setPosRaw on update
|
|
}
|
|
|
|
public static double packetToEntity(long coord) {
|
|
- return (double)coord / 4096.0D;
|
|
+ return (double)coord / 4096.0D; // Paper - check ItemEntity#setPosRaw on update
|
|
}
|
|
|
|
public Vec3 updateEntityPosition(Vec3 orig) {
|
|
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
|
|
index 75860a8c0373d3675e3b7e20d7b427f787ebd16b..1e82f9b9fc83cd39fecd5e0a99ca457e8c371558 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/Entity.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
|
|
@@ -3731,6 +3731,16 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
|
|
}
|
|
|
|
public final void setPosRaw(double x, double y, double z) {
|
|
+ // Paper start - fix MC-4
|
|
+ if (this instanceof ItemEntity) {
|
|
+ if (com.destroystokyo.paper.PaperConfig.fixEntityPositionDesync) {
|
|
+ // encode/decode from PacketPlayOutEntity
|
|
+ x = Mth.lfloor(x * 4096.0D) * (1 / 4096.0D);
|
|
+ y = Mth.lfloor(y * 4096.0D) * (1 / 4096.0D);
|
|
+ z = Mth.lfloor(z * 4096.0D) * (1 / 4096.0D);
|
|
+ }
|
|
+ }
|
|
+ // Paper end - fix MC-4
|
|
// Paper start - never allow AABB to become desynced from position
|
|
// hanging has its own special logic
|
|
if (!(this instanceof net.minecraft.world.entity.decoration.HangingEntity) && (this.position.x != x || this.position.y != y || this.position.z != z)) {
|