From 0fe3d9410e18a2cc76f36a8f171bd4e798a0eb26 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Tue, 6 Dec 2022 12:21:56 +0100
Subject: [PATCH] 1.19.3-rc3 Definitely still 4.5.0 as well

---
 .../packets/EntityPackets1_19_3.java                   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_1to1_19_3/packets/EntityPackets1_19_3.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_1to1_19_3/packets/EntityPackets1_19_3.java
index 994a6ab4..de50ffb3 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_1to1_19_3/packets/EntityPackets1_19_3.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_1to1_19_3/packets/EntityPackets1_19_3.java
@@ -96,7 +96,17 @@ public final class EntityPackets1_19_3 extends EntityRewriter<Protocol1_19_1To1_
             public void registerMap() {
                 map(Type.STRING); // Dimension
                 map(Type.STRING); // World
+                map(Type.LONG); // Seed
+                map(Type.UNSIGNED_BYTE); // Gamemode
+                map(Type.BYTE); // Previous gamemode
+                map(Type.BOOLEAN); // Debug
+                map(Type.BOOLEAN); // Flat
                 handler(worldDataTrackerHandlerByKey());
+                handler(wrapper -> {
+                    // Old clients will always keep entity data (packed here as 0x02), nothing we can do there
+                    final byte keepDataMask = wrapper.read(Type.BYTE);
+                    wrapper.write(Type.BOOLEAN, (keepDataMask & 1) != 0); // Keep attributes
+                });
             }
         });