Add include guards and header comments to sources

27 files changed, 195 insertions, 4 deletions

diff --git a/src/game/server/chat.cc b/src/game/server/chat.cc
index a0ceba8..5bb2258 100644
--- a/src/game/server/chat.cc
+++ b/src/game/server/chat.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: chat.cc
+// Description: Chat handling
+
 #include "server/pch.hh"
 
 #include "server/chat.hh"
diff --git a/src/game/server/chat.hh b/src/game/server/chat.hh
index 1b3e11b..671fd22 100644
--- a/src/game/server/chat.hh
+++ b/src/game/server/chat.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: chat.hh
+// Description: Chat handling
+
+#ifndef SERVER_CHAT_HH
+#define SERVER_CHAT_HH
 #pragma once
 
 struct Session;
@@ -10,3 +17,5 @@ void broadcast(std::string_view message, std::string_view sender);
 void send(Session* session, std::string_view message);
 void send(Session* session, std::string_view message, std::string_view sender);
 } // namespace server_chat
+
+#endif
diff --git a/src/game/server/game.cc b/src/game/server/game.cc
index deb7d68..0aa976e 100644
--- a/src/game/server/game.cc
+++ b/src/game/server/game.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: game.cc
+// Description: Main game logic
+
 #include "server/pch.hh"
 
 #include "server/game.hh"
diff --git a/src/game/server/game.hh b/src/game/server/game.hh
index 1dbe4b8..dccd2f5 100644
--- a/src/game/server/game.hh
+++ b/src/game/server/game.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: game.hh
+// Description: Main game logic
+
+#ifndef SERVER_GAME_HH
+#define SERVER_GAME_HH
 #pragma once
 
 namespace config
@@ -23,3 +30,5 @@ void shutdown(void);
 void fixed_update(void);
 void fixed_update_late(void);
 } // namespace server_game
+
+#endif
diff --git a/src/game/server/globals.cc b/src/game/server/globals.cc
index 12fce4a..796d9f2 100644
--- a/src/game/server/globals.cc
+++ b/src/game/server/globals.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: globals.cc
+// Description: Global variables
+
 #include "server/pch.hh"
 
 #include "server/globals.hh"
diff --git a/src/game/server/globals.hh b/src/game/server/globals.hh
index 80e84bb..c44b03a 100644
--- a/src/game/server/globals.hh
+++ b/src/game/server/globals.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: globals.hh
+// Description: Global variables
+
+#ifndef SERVER_GLOBALS_HH
+#define SERVER_GLOBALS_HH
 #pragma once
 
 #include "shared/globals.hh"
@@ -19,3 +26,5 @@ extern std::uint64_t tickrate_dt;
 extern Dimension* spawn_dimension;
 extern std::unordered_map<std::string, Dimension*> dimensions;
 } // namespace globals
+
+#endif
diff --git a/src/game/server/main.cc b/src/game/server/main.cc
index 181145f..7c70ae1 100644
--- a/src/game/server/main.cc
+++ b/src/game/server/main.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: main.cc
+// Description: Entry point
+
 #include "server/pch.hh"
 
 #include "core/config/number.hh"
diff --git a/src/game/server/pch.hh b/src/game/server/pch.hh
index 6f42c17..a7892d8 100644
--- a/src/game/server/pch.hh
+++ b/src/game/server/pch.hh
@@ -1,3 +1,12 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: pch.hh
+// Description: Precompiled header
+
+#ifndef SERVER_PCH_HH
+#define SERVER_PCH_HH
 #pragma once
 
 #include <shared/pch.hh>
+
+#endif
diff --git a/src/game/server/receive.cc b/src/game/server/receive.cc
index a3ce14b..b9a0da0 100644
--- a/src/game/server/receive.cc
+++ b/src/game/server/receive.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: receive.cc
+// Description: Handle incoming packets
+
 #include "server/pch.hh"
 
 #include "server/receive.hh"
diff --git a/src/game/server/receive.hh b/src/game/server/receive.hh
index 4150226..99c5688 100644
--- a/src/game/server/receive.hh
+++ b/src/game/server/receive.hh
@@ -1,6 +1,15 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: receive.hh
+// Description: Handle incoming packets
+
+#ifndef SERVER_RECEIVE_HH
+#define SERVER_RECEIVE_HH
 #pragma once
 
 namespace server_recieve
 {
 void init(void);
 } // namespace server_recieve
+
+#endif
diff --git a/src/game/server/sessions.cc b/src/game/server/sessions.cc
index b161d55..f66dfa1 100644
--- a/src/game/server/sessions.cc
+++ b/src/game/server/sessions.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: sessions.cc
+// Description: Session handling
+
 #include "server/pch.hh"
 
 #include "server/sessions.hh"
diff --git a/src/game/server/sessions.hh b/src/game/server/sessions.hh
index 4c64f80..7806d71 100644
--- a/src/game/server/sessions.hh
+++ b/src/game/server/sessions.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: sessions.hh
+// Description: Session handling
+
+#ifndef SERVER_SESSIONS_HH
+#define SERVER_SESSIONS_HH
 #pragma once
 
 class Dimension;
@@ -50,3 +57,5 @@ namespace sessions
 {
 void refresh_scoreboard(void);
 } // namespace sessions
+
+#endif
diff --git a/src/game/server/status.cc b/src/game/server/status.cc
index 9414a76..592c5ce 100644
--- a/src/game/server/status.cc
+++ b/src/game/server/status.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: status.cc
+// Description: Respond to client bothering
+
 #include "server/pch.hh"
 
 #include "server/status.hh"
diff --git a/src/game/server/status.hh b/src/game/server/status.hh
index 35370a0..70eea40 100644
--- a/src/game/server/status.hh
+++ b/src/game/server/status.hh
@@ -1,6 +1,15 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: status.hh
+// Description: Respond to client bothering
+
+#ifndef SERVER_STATUS_HH
+#define SERVER_STATUS_HH
 #pragma once
 
 namespace status
 {
 void init(void);
 } // namespace status
+
+#endif
diff --git a/src/game/server/whitelist.cc b/src/game/server/whitelist.cc
index 555e5f3..2370c67 100644
--- a/src/game/server/whitelist.cc
+++ b/src/game/server/whitelist.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: whitelist.cc
+// Description: Player allow-list
+
 #include "server/pch.hh"
 
 #include "server/whitelist.hh"
@@ -48,7 +53,7 @@ void whitelist::init_late(void)
     PHYSFS_File* file = PHYSFS_openRead(whitelist::filename.c_str());
 
     if(file == nullptr) {
-        spdlog::warn("whitelist: {}: {}", whitelist::filename.get(), physfs_error());
+        spdlog::warn("whitelist: {}: {}", whitelist::filename.get(), physfs::last_error());
         whitelist::enabled.set_value(false);
         return;
     }
diff --git a/src/game/server/whitelist.hh b/src/game/server/whitelist.hh
index 4695d16..e9dc3aa 100644
--- a/src/game/server/whitelist.hh
+++ b/src/game/server/whitelist.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: whitelist.hh
+// Description: Player allow-list
+
+#ifndef SERVER_WHITELIST_HH
+#define SERVER_WHITELIST_HH
 #pragma once
 
 namespace config
@@ -24,3 +31,5 @@ namespace whitelist
 bool contains(std::string_view username);
 bool matches(std::string_view username, std::uint64_t password_hash);
 } // namespace whitelist
+
+#endif
diff --git a/src/game/server/world/inhabited.hh b/src/game/server/world/inhabited.hh
index e4b2344..fa34eb2 100644
--- a/src/game/server/world/inhabited.hh
+++ b/src/game/server/world/inhabited.hh
@@ -1,3 +1,12 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: inhabited.hh
+// Description: Flag component for chunks that should be saved on disk
+
+#ifndef SERVER_WORLD_INHABITED_HH
+#define SERVER_WORLD_INHABITED_HH
 #pragma once
 
 struct Inhabited final {};
+
+#endif
diff --git a/src/game/server/world/overworld.cc b/src/game/server/world/overworld.cc
index b03311d..3e9f15b 100644
--- a/src/game/server/world/overworld.cc
+++ b/src/game/server/world/overworld.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: overworld.cc
+// Description: Generic world dimension
+
 #include "server/pch.hh"
 
 #include "server/world/overworld.hh"
diff --git a/src/game/server/world/overworld.hh b/src/game/server/world/overworld.hh
index ef4bb54..fd21089 100644
--- a/src/game/server/world/overworld.hh
+++ b/src/game/server/world/overworld.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: overworld.hh
+// Description: Generic world dimension
+
+#ifndef SERVER_WORLD_OVERWORLD_HH
+#define SERVER_WORLD_OVERWORLD_HH
 #pragma once
 
 #include "core/config/number.hh"
@@ -60,3 +67,5 @@ private:
 private:
     std::mutex m_mutex;
 };
+
+#endif
diff --git a/src/game/server/world/random_tick.cc b/src/game/server/world/random_tick.cc
index 8fdcfeb..6e6c65a 100644
--- a/src/game/server/world/random_tick.cc
+++ b/src/game/server/world/random_tick.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: random_tick.cc
+// Description: Voxel random ticking
+
 #include "server/pch.hh"
 
 #include "server/world/random_tick.hh"
diff --git a/src/game/server/world/random_tick.hh b/src/game/server/world/random_tick.hh
index 9c67dc4..0d01267 100644
--- a/src/game/server/world/random_tick.hh
+++ b/src/game/server/world/random_tick.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: random_tick.hh
+// Description: Voxel random ticking
+
+#ifndef SERVER_WORLD_RANDOM_TICK_HH
+#define SERVER_WORLD_RANDOM_TICK_HH
 #pragma once
 
 #include "shared/types.hh"
@@ -9,3 +16,5 @@ namespace random_tick
 void init(void);
 void tick(const chunk_pos& cpos, Chunk* chunk);
 } // namespace random_tick
+
+#endif
diff --git a/src/game/server/world/universe.cc b/src/game/server/world/universe.cc
index defefc6..0a8d956 100644
--- a/src/game/server/world/universe.cc
+++ b/src/game/server/world/universe.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: universe.cc
+// Description: Dimension handling
+
 #include "server/pch.hh"
 
 #include "server/world/universe.hh"
@@ -52,7 +57,7 @@ static void add_new_dimension(Dimension* dimension)
     auto dimension_dir = std::format("{}/{}", universe_name.get(), dimension->get_name());
 
     if(!PHYSFS_mkdir(dimension_dir.c_str())) {
-        spdlog::critical("universe: {}: {}", dimension_dir, physfs_error());
+        spdlog::critical("universe: {}: {}", dimension_dir, physfs::last_error());
         std::terminate();
     }
 
@@ -61,7 +66,7 @@ static void add_new_dimension(Dimension* dimension)
     metadata->zvox_dir = std::format("{}/chunk", dimension_dir);
 
     if(!PHYSFS_mkdir(metadata->zvox_dir.c_str())) {
-        spdlog::critical("universe: {}: {}", metadata->zvox_dir, physfs_error());
+        spdlog::critical("universe: {}: {}", metadata->zvox_dir, physfs::last_error());
         std::terminate();
     }
 
@@ -109,7 +114,7 @@ void universe::init_late(void)
     const auto universe_dir = std::string(universe_name.get());
 
     if(!PHYSFS_mkdir(universe_dir.c_str())) {
-        spdlog::critical("universe: {}: {}", universe_dir, physfs_error());
+        spdlog::critical("universe: {}: {}", universe_dir, physfs::last_error());
         std::terminate();
     }
 
diff --git a/src/game/server/world/universe.hh b/src/game/server/world/universe.hh
index 31d3721..0901b9e 100644
--- a/src/game/server/world/universe.hh
+++ b/src/game/server/world/universe.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: universe.hh
+// Description: Dimension handling
+
+#ifndef SERVER_WORLD_UNIVERSE_HH
+#define SERVER_WORLD_UNIVERSE_HH
 #pragma once
 
 #include "shared/types.hh"
@@ -20,3 +27,5 @@ Chunk* load_chunk(Dimension* dimension, const chunk_pos& cpos);
 void save_chunk(Dimension* dimension, const chunk_pos& cpos);
 void save_all_chunks(Dimension* dimension);
 } // namespace universe
+
+#endif
diff --git a/src/game/server/world/unloader.cc b/src/game/server/world/unloader.cc
index 5842b14..bbb87d3 100644
--- a/src/game/server/world/unloader.cc
+++ b/src/game/server/world/unloader.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: unloader.cc
+// Description: Handle chunks that are out of view for all players
+
 #include "server/pch.hh"
 
 #include "server/world/unloader.hh"
diff --git a/src/game/server/world/unloader.hh b/src/game/server/world/unloader.hh
index bf816bd..85e7d5e 100644
--- a/src/game/server/world/unloader.hh
+++ b/src/game/server/world/unloader.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: unloader.hh
+// Description: Handle chunks that are out of view for all players
+
+#ifndef SERVER_WORLD_UNLOADER_HH
+#define SERVER_WORLD_UNLOADER_HH
 #pragma once
 
 class Dimension;
@@ -8,3 +15,5 @@ void init(void);
 void init_late(void);
 void fixed_update_late(Dimension* dimension);
 } // namespace unloader
+
+#endif
diff --git a/src/game/server/world/worldgen.cc b/src/game/server/world/worldgen.cc
index c8c7ade..e543208 100644
--- a/src/game/server/world/worldgen.cc
+++ b/src/game/server/world/worldgen.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: worldgen.cc
+// Description: Threaded requests for dimensions to generate chunks
+
 #include "server/pch.hh"
 
 #include "server/world/worldgen.hh"
diff --git a/src/game/server/world/worldgen.hh b/src/game/server/world/worldgen.hh
index f991744..ef0cc49 100644
--- a/src/game/server/world/worldgen.hh
+++ b/src/game/server/world/worldgen.hh
@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+// Copyright (c) 2025 Kirill Dmitrievich
+// File: worldgen.hh
+// Description: Threaded requests for dimensions to generate chunks
+
+#ifndef SERVER_WORLD_WORLDGEN_HH
+#define SERVER_WORLD_WORLDGEN_HH
 #pragma once
 
 #include "shared/types.hh"
@@ -16,3 +23,5 @@ namespace worldgen
 bool is_generating(Dimension* dimension, const chunk_pos& cpos);
 void request_chunk(Session* session, const chunk_pos& cpos);
 } // namespace worldgen
+
+#endif