Readd mc-4 fix

patches/removed/1.19/0542-MC-4-Fix-item-position-desync.patch

@@ -1,67 +0,0 @@
-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.
-
-1.19: entity tracking position changes
-
-diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
-index ccc60a5465efa2b71fc2593d75af62c0b64fe66c..1adbceadd5df96e17796561a40eb7b760493440e 100644
---- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
-+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
-@@ -101,6 +101,11 @@ public class PaperConfig {
-         trackPluginScoreboards = getBoolean("settings.track-plugin-scoreboards", false);
-     }
- 
-+    public static boolean fixEntityPositionDesync = true;
-+    private static void fixEntityPositionDesync() {
-+        fixEntityPositionDesync = getBoolean("settings.fix-entity-position-desync", fixEntityPositionDesync);
-+    }
-+
-     public static void registerCommands() {
-         for (Map.Entry<String, Command> entry : commands.entrySet()) {
-             MinecraftServer.getServer().server.getCommandMap().register(entry.getKey(), "Paper", entry.getValue());
-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 78dbc89bb247b2765bd2d7d81013d18dfe35539f..e53d8fe713a4c9920f40bf91d6453d36520b45f7 100644
---- a/src/main/java/net/minecraft/world/entity/Entity.java
-+++ b/src/main/java/net/minecraft/world/entity/Entity.java
-@@ -3802,6 +3802,16 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
-     }
-     public final void setPosRaw(double x, double y, double z, boolean forceBoundingBoxUpdate) {
-         // Paper end
-+        // 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
-         if (this.position.x != x || this.position.y != y || this.position.z != z) {
-             this.position = new Vec3(x, y, z);
-             int i = Mth.floor(x);

patches/server/0543-MC-4-Fix-item-position-desync.patch

@@ -0,0 +1,49 @@
+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/net/minecraft/network/protocol/game/VecDeltaCodec.java b/src/main/java/net/minecraft/network/protocol/game/VecDeltaCodec.java
+index 3768a71491ef7836b9739bdaec7a077c523dbacd..a57957ace1a72b3308487f180a366c3879eceb21 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/VecDeltaCodec.java
++++ b/src/main/java/net/minecraft/network/protocol/game/VecDeltaCodec.java
+@@ -8,11 +8,11 @@ public class VecDeltaCodec {
+     public Vec3 base = Vec3.ZERO; // Paper
+ 
+     private static long encode(double value) {
+-        return Mth.lfloor(value * 4096.0D);
++        return Mth.lfloor(value * 4096.0D); // Paper - check ItemEntity#setPosRaw on update
+     }
+ 
+     private static double decode(long value) {
+-        return (double)value / 4096.0D;
++        return (double)value / 4096.0D; // Paper - check ItemEntity#setPosRaw on update
+     }
+ 
+     public Vec3 decode(long x, long y, long z) {
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 6b49e66f0e45eb7ed525fe4314d2a9615212f7e4..4f9a5837d66c1940385e94f80d865cde1c4cf2a2 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -3888,6 +3888,16 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+     }
+     public final void setPosRaw(double x, double y, double z, boolean forceBoundingBoxUpdate) {
+         // Paper end
++        // Paper start - fix MC-4
++        if (this instanceof ItemEntity) {
++            if (io.papermc.paper.configuration.GlobalConfiguration.get().misc.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
+         if (this.position.x != x || this.position.y != y || this.position.z != z) {
+             this.position = new Vec3(x, y, z);
+             int i = Mth.floor(x);

patches/server/0570-Collision-option-for-requiring-a-player-participant.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Collision option for requiring a player participant
 
 
 diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
-index 6b49e66f0e45eb7ed525fe4314d2a9615212f7e4..7634e8a8859f6fbf68cc3f62c698ecb84264f9c0 100644
+index 4f9a5837d66c1940385e94f80d865cde1c4cf2a2..db6be2d9144fb1da9583833849f7b5518402c26d 100644
 --- a/src/main/java/net/minecraft/world/entity/Entity.java
 +++ b/src/main/java/net/minecraft/world/entity/Entity.java
 @@ -1714,6 +1714,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {