feat(protocol): add packet serialization and login handling

Introduce packet header and ID mapping for protobuf messages.
Refactor session and server_world to use new packet wrapper.
Fix missing semicolons in proto files.

src/gameplay/server_world.cpp

@@ -1,6 +1,8 @@
 #include "Cubed/gameplay/server_world.hpp"
 
 #include "Cubed/config.hpp"
+#include "Cubed/gameplay/packet.hpp"
+#include "Cubed/gameplay/session.hpp"
 #include "Cubed/tools/cubed_assert.hpp"
 #include "Cubed/tools/log.hpp"
 
@@ -357,17 +359,14 @@ void ServerWorld::sync_player_pos(const std::string& name, float x, float y,
     it->second.update_pos(x, y, z);
 }
 
-void ServerWorld::handle_player_request(const PlayerRequest& request) {
-    if (request.join()) {
-        player_join(request.name());
-    }
-    if (request.exit()) {
-        player_exit(request.name());
-    }
-    if (request.chunk_send()) {
-        m_request_gen_name = request.name();
-        need_gen();
-    }
+void ServerWorld::handle_player_login(const std::string& name,
+                                      std::shared_ptr<Session> session) {
+    player_join(name);
+    m_player_session.emplace(name, session);
+    LoginRsp rsp;
+    rsp.set_success(true);
+    rsp.set_uuid(name);
+    session->send(make_packet(name));
 }
 
 void ServerWorld::player_join(const std::string& name) {

src/gameplay/session.cpp

@@ -3,8 +3,6 @@
 #include "Cubed/gameplay/server_world.hpp"
 #include "Cubed/tools/log.hpp"
 #include "Cubed/tools/uuid.hpp"
-#include "proto/player_pos.pb.h"
-#include "proto/player_request.pb.h"
 using asio::ip::tcp;
 
 namespace Cubed {
@@ -61,20 +59,8 @@ asio::awaitable<void> Session::read_loop() {
             }
 
             if (cmd_id == 1001) {
-                PlayerRequest player_request;
-                if (player_request.ParseFromArray(body_data.data(),
-                                                  body_data.size())) {
-                }
             }
             if (cmd_id == 1002) {
-                PlayerPos player_pos;
-                if (player_pos.ParseFromArray(body_data.data(),
-                                              body_data.size())) {
-                    m_server_world.sync_player_pos(
-                        player_pos.name(), player_pos.x(), player_pos.y(),
-                        player_pos.z());
-                } else {
-                }
             }
         }
     } catch (const asio::system_error& e) {

src/proto/packet.proto

@@ -0,0 +1,11 @@
+syntax = "proto3";
+
+import "common/chunk_pos.proto";
+import "common/error.proto";
+import "common/player_info.proto";
+import "common/vector3.proto";
+import "player/player.proto";
+import "auth/auth.proto";
+import "system/ping.proto";
+import "system/pong.proto";
+import "world/chunk_data.proto";

src/proto/player/player.proto

@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-import "common/vector3.proto"
+import "common/vector3.proto";
 
 message PlayerPos {
     string uuid = 1;

src/proto/world/chunk_data.proto

@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-import "common/chunk_pos.proto"
+import "common/chunk_pos.proto";
 
 message ChunkData {
     ChunkPos pos = 1;