From c027ebd62529c4fc951ccd03cb64b4517b93814f Mon Sep 17 00:00:00 2001
From: Vincent <magicdroidx@gmail.com>
Date: Fri, 14 Jun 2024 16:37:07 +0100
Subject: [PATCH] fix: hiding seeds from the client

---
 .../network/packet/start_game_packet.h        | 35 -------------------
 include/bedrock/world/level/level_settings.h  |  6 ----
 .../network/packet/start_game_packet.cpp      | 15 +++++++-
 3 files changed, 14 insertions(+), 42 deletions(-)

diff --git a/include/bedrock/network/packet/start_game_packet.h b/include/bedrock/network/packet/start_game_packet.h
index b6e8e4f51..f0c32d7e4 100644
--- a/include/bedrock/network/packet/start_game_packet.h
+++ b/include/bedrock/network/packet/start_game_packet.h
@@ -18,51 +18,16 @@
 #include <vector>
 
 #include "bedrock/bedrock.h"
-#include "bedrock/core/math/vec2.h"
-#include "bedrock/core/math/vec3.h"
 #include "bedrock/core/utility/uuid.h"
-#include "bedrock/forward.h"
 #include "bedrock/nbt/compound_tag.h"
 #include "bedrock/network/packet.h"
 #include "bedrock/server/packs/content_identity.h"
-#include "bedrock/world/actor/actor_runtime_id.h"
-#include "bedrock/world/actor/actor_unique_id.h"
-#include "bedrock/world/actor/player/synced_player_movement_settings.h"
-#include "bedrock/world/level/game_type.h"
 #include "bedrock/world/level/level_settings.h"
 
-class NetworkPermissions {
-public:
-    bool unknown;
-};
-
 class StartGamePacket : public Packet {
 public:
     ENDSTONE_HOOK virtual void write(BinaryStream &) const;
 
 private:
     mutable LevelSettings settings_;                                     // +48
-    ActorUniqueID entity_id_;                                            // +1296 (+1072)
-    ActorRuntimeID runtime_id_;                                          // +1304 (+1080)
-    GameType game_type_;                                                 // +1312 (+1088)
-    Vec3 position_;                                                      // +1316
-    Vec2 rotation_;                                                      // +1328
-    std::string level_id_;                                               // +1336
-    std::string level_name_;                                             // +1368
-    ContentIdentity template_content_identity_;                          // +1400
-    mce::UUID world_template_id_;                                        // +1424
-    bool is_trial_;                                                      // +1440
-    SyncedPlayerMovementSettings movement_settings_;                     // +1444
-    std::uint64_t level_current_time_;                                   // +1456
-    int enchantment_seed_;                                               // +1464
-    std::string multiplayer_correlation_id_;                             // +1472
-    std::vector<void *> item_data_;                                      // +1504
-    bool enable_item_stack_net_manager_;                                 // +1528
-    std::string server_version_;                                         // +1536
-    CompoundTag player_property_data_;                                   // +1568
-    std::uint64_t server_block_type_registry_checksum_;                  // +1592
-    bool server_enabled_client_side_generation_;                         // +1600 (+1352)
-    bool block_network_ids_are_hashes_;                                  // +1601 (+1353)
-    NetworkPermissions network_permissions_;                             // +1602 (+1354)
-    std::vector<std::pair<std::string, CompoundTag>> block_properties_;  // +1608 (+1360)
 };
diff --git a/include/bedrock/world/level/level_settings.h b/include/bedrock/world/level/level_settings.h
index 39f931001..22827cb8a 100644
--- a/include/bedrock/world/level/level_settings.h
+++ b/include/bedrock/world/level/level_settings.h
@@ -31,10 +31,4 @@ class LevelSettings {
 
 private:
     LevelSeed64 seed_;
-#ifdef _WIN32
-    size_t pad_[1248 / 8 - 1];
-#else
-    size_t pad_[1024 / 8 - 1];
-#endif
 };
-BEDROCK_STATIC_ASSERT_SIZE(LevelSettings, 1248, 1024);
diff --git a/src/endstone_runtime/bedrock/network/packet/start_game_packet.cpp b/src/endstone_runtime/bedrock/network/packet/start_game_packet.cpp
index c632c8359..d0a2efea7 100644
--- a/src/endstone_runtime/bedrock/network/packet/start_game_packet.cpp
+++ b/src/endstone_runtime/bedrock/network/packet/start_game_packet.cpp
@@ -14,11 +14,24 @@
 
 #include "bedrock/network/packet/start_game_packet.h"
 
+#include <entt/entt.hpp>
+
 #include "endstone/detail/hook.h"
+#include "endstone/detail/level/level.h"
+#include "endstone/detail/server.h"
+
+using endstone::detail::EndstoneLevel;
+using endstone::detail::EndstoneServer;
 
 void StartGamePacket::write(BinaryStream &stream) const
 {
-    if (!server_enabled_client_side_generation_) {
+    static bool client_side_generation_enabled = []() {
+        auto &server = entt::locator<EndstoneServer>::value();
+        auto *level = static_cast<EndstoneLevel *>(server.getLevels()[0]);
+        return level->getHandle().isClientSideGenerationEnabled();
+    }();
+
+    if (!client_side_generation_enabled) {
         settings_.setRandomSeed({0});
     }