1.1.

CMakeLists.txt

@@ -26,19 +26,13 @@ set(SOURCES
     "src/assets/skeleton.hpp"
     "src/assets/skeleton.cpp"
     "src/collision/trianglemesh.cpp"
-    # "src/game/entity.hpp"
-    # "src/game/entity.cpp"
-    # "src/game/meshinstance.hpp"
-    # "src/game/meshinstance.cpp"
     "src/game/player_input.hpp"
-    # "src/game/player.hpp"
-    # "src/game/player.cpp"
     "src/game/transform_node.hpp"
-    # "src/game/world.hpp"
-    # "src/game/world.cpp"
     "src/gameview/client_session.hpp"
+    "src/gameview/client_session.cpp"
     "src/gameview/entityview.hpp"
     "src/gameview/worldview.hpp"
+    "src/gameview/worldview.cpp"
     "src/gfx/buffer_object.cpp"
     "src/gfx/buffer_object.hpp"
     "src/gfx/draw_list.hpp"
@@ -58,8 +52,11 @@ set(SOURCES
     "src/net/defs.hpp"
     "src/net/fixed_str.hpp"
     "src/net/inmessage.hpp"
+    "src/net/msg_producer.hpp"
+    "src/net/msg_producer.cpp"
     "src/net/outmessage.hpp"
     "src/net/quantized.hpp"
+    "src/utils/defs.hpp"
     "src/utils/files.hpp"
     "src/utils/files.cpp"
     "src/utils/transform.hpp"
@@ -79,9 +76,23 @@ endif()
 
 
 # Include directories
-target_include_directories(${MAIN_NAME} PRIVATE 
+target_include_directories(${MAIN_NAME} PRIVATE "src")
-    "src"
+
-)
+add_subdirectory(external/glm)
+target_link_libraries(${MAIN_NAME} PRIVATE glm)
+target_include_directories(${MAIN_NAME} PRIVATE "external/stb")
+
+set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
+set(BUILD_BULLET2_DEMOS OFF CACHE BOOL "" FORCE)
+set(BUILD_UNIT_TESTS OFF CACHE BOOL "" FORCE)
+set(BUILD_PYBULLET OFF CACHE BOOL "" FORCE)
+set(BUILD_OPENGL3_DEMOS OFF CACHE BOOL "" FORCE)
+
+add_subdirectory(external/bullet3)
+target_link_libraries(${MAIN_NAME} PRIVATE BulletCollision BulletDynamics LinearMath Bullet3Common)
+target_include_directories(${MAIN_NAME} PRIVATE "external/bullet3/src")
+
+target_compile_definitions(${MAIN_NAME} PRIVATE CLIENT)
 
 # Platform-specific SDL2 handling
 if (CMAKE_SYSTEM_NAME STREQUAL Emscripten)
@@ -134,18 +145,75 @@ endif()
     add_subdirectory(external/glad)
     target_link_libraries(${MAIN_NAME} PRIVATE glad)
 
+    # add easywsclient
+    set(EASYWSCLIENT_PATH "external/easywsclient")
+
+    add_library(easywsclient STATIC 
+        ${EASYWSCLIENT_PATH}/easywsclient.cpp
+    )
+
+    target_include_directories(easywsclient PUBLIC ${EASYWSCLIENT_PATH})
+    
+    target_link_libraries(${MAIN_NAME} PRIVATE easywsclient)
+
+    # build server
+    set(ASIO_INCLUDE_DIR "external/asio/include")
+    include_directories(${ASIO_INCLUDE_DIR})
+
+    add_subdirectory(external/Crow)
+    set(SERVER_SOURCES
+        "src/assets/animation.hpp"
+        "src/assets/animation.cpp"
+        "src/assets/cache.hpp"
+        "src/assets/cache.cpp"
+        "src/assets/cmdfile.hpp"
+        "src/assets/cmdfile.cpp"
+        "src/assets/map.hpp"
+        "src/assets/map.cpp"
+        "src/assets/model.hpp"
+        "src/assets/model.cpp"
+        "src/assets/mesh_builder.cpp"
+        "src/assets/skeleton.hpp"
+        "src/assets/skeleton.cpp"
+        "src/collision/aabb.hpp"
+        "src/collision/dynamicsworld.hpp"
+        "src/collision/dynamicsworld.cpp"
+        "src/collision/trianglemesh.hpp"
+        "src/collision/trianglemesh.cpp"
+        "src/game/entity.hpp"
+        "src/game/entity.cpp"
+        "src/game/game.hpp"
+        "src/game/game.cpp"
+        "src/game/player_input.hpp"
+        "src/game/player.hpp"
+        "src/game/player.cpp"
+        "src/game/transform_node.hpp"
+        "src/game/world.hpp"
+        "src/game/world.cpp"
+        "src/net/defs.hpp"
+        "src/net/fixed_str.hpp"
+        "src/net/inmessage.hpp"
+        "src/net/msg_producer.hpp"
+        "src/net/msg_producer.cpp"
+        "src/net/outmessage.hpp"
+        "src/net/quantized.hpp"
+        "src/server/client.hpp"
+        "src/server/client.cpp"
+        "src/server/main.cpp"
+        "src/server/server.hpp"
+        "src/server/server.cpp"
+        "src/server/wsserver.hpp"
+        "src/server/wsserver.cpp"
+        "src/utils/defs.hpp"
+        "src/utils/files.hpp"
+        "src/utils/files.cpp"
+        "src/utils/transform.hpp"
+    )
+
+    set(SERVER_NAME server)
+    add_executable(${SERVER_NAME} ${SERVER_SOURCES})
+    target_link_libraries(${SERVER_NAME} PRIVATE Crow glm BulletCollision BulletDynamics LinearMath Bullet3Common)
+    target_include_directories(${SERVER_NAME} PRIVATE "src" "external/bullet3/src")
+    target_compile_definitions(${SERVER_NAME} PRIVATE SERVER)
+
 endif()
-
-add_subdirectory(external/glm)
-target_link_libraries(${MAIN_NAME} PRIVATE glm)
-target_include_directories(${MAIN_NAME} PRIVATE "external/stb")
-
-set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
-set(BUILD_BULLET2_DEMOS OFF CACHE BOOL "" FORCE)
-set(BUILD_UNIT_TESTS OFF CACHE BOOL "" FORCE)
-set(BUILD_PYBULLET OFF CACHE BOOL "" FORCE)
-set(BUILD_OPENGL3_DEMOS OFF CACHE BOOL "" FORCE)
-
-add_subdirectory(external/bullet3)
-target_link_libraries(${MAIN_NAME} PRIVATE BulletCollision LinearMath Bullet3Common)
-target_include_directories(${MAIN_NAME} PRIVATE "external/bullet3/src")

src/assets/cache.cpp

@@ -1,5 +1,8 @@
 #include "cache.hpp"
 
-assets::TextureCache assets::CacheManager::texture_cache_;
 assets::SkeletonCache assets::CacheManager::skeleton_cache_;
 assets::ModelCache assets::CacheManager::model_cache_;
+assets::MapCache assets::CacheManager::map_cache_;
+assets::VehicleCache assets::CacheManager::vehicle_cache_;
+
+CLIENT_ONLY(assets::TextureCache assets::CacheManager::texture_cache_;)

src/assets/cache.hpp

@@ -1,8 +1,15 @@
 #pragma once
 
+#include "map.hpp"
 #include "model.hpp"
 #include "skeleton.hpp"
+#include "vehiclemdl.hpp"
+
+#include "utils/defs.hpp"
+
+#ifdef CLIENT
 #include "gfx/texture.hpp"
+#endif
 
 namespace assets
 {
@@ -36,11 +43,13 @@ private:
     std::map<std::string, std::weak_ptr<const T>> cache_;
 };
 
+#ifdef CLIENT
 class TextureCache final : public Cache<gfx::Texture>
 {
 protected:
     PtrType Load(const std::string& key) override { return gfx::Texture::LoadFromFile(key); }
 };
+#endif // CLIENT
 
 class SkeletonCache final : public Cache<Skeleton>
 {
@@ -54,26 +63,45 @@ protected:
     PtrType Load(const std::string& key) override { return Model::LoadFromFile(key); }
 };
 
+class MapCache final : public Cache<Map>
+{
+protected:
+    PtrType Load(const std::string& key) override { return Map::LoadFromFile(key); }
+};
+
+class VehicleCache final : public Cache<VehicleModel>
+{
+protected:
+    PtrType Load(const std::string& key) override { return VehicleModel::LoadFromFile(key); }
+};
+
 class CacheManager
 {
 public:
-    static std::shared_ptr<const gfx::Texture> GetTexture(const std::string& filename) {
+    static std::shared_ptr<const Skeleton> GetSkeleton(const std::string& filename)
-        return texture_cache_.Get(filename);
+    {
-    }
-
-    static std::shared_ptr<const Skeleton> GetSkeleton(const std::string& filename) {
         return skeleton_cache_.Get(filename);
     }
 
-    static std::shared_ptr<const Model> GetModel(const std::string& filename) {
+    static std::shared_ptr<const Model> GetModel(const std::string& filename) { return model_cache_.Get(filename); }
-        return model_cache_.Get(filename);
+
+    static std::shared_ptr<const Map> GetMap(const std::string& filename) { return map_cache_.Get(filename); }
+    
+    static std::shared_ptr<const VehicleModel> GetVehicleModel(const std::string& filename) { return vehicle_cache_.Get(filename); }
+
+#ifdef CLIENT
+    static std::shared_ptr<const gfx::Texture> GetTexture(const std::string& filename)
+    {
+        return texture_cache_.Get(filename);
     }
+#endif
 
 private:
-    static TextureCache texture_cache_;
     static SkeletonCache skeleton_cache_;
     static ModelCache model_cache_;
-
+    static MapCache map_cache_;
+    static VehicleCache vehicle_cache_;
+    CLIENT_ONLY(static TextureCache texture_cache_;)
 };
 
 } // namespace assets

src/assets/map.cpp

@@ -47,3 +47,20 @@ std::shared_ptr<const assets::Map> assets::Map::LoadFromFile(const std::string&
 
     return map;
 }
+
+#ifdef CLIENT
+void assets::Map::Draw(gfx::DrawList& dlist) const
+{
+    if (!basemodel_ || !basemodel_->GetMesh())
+        return;
+
+    const auto& surfaces = basemodel_->GetMesh()->surfaces;
+
+    for (const auto& surface : surfaces)
+    {
+        gfx::DrawSurfaceCmd cmd;
+        cmd.surface = &surface;
+        dlist.AddSurface(cmd);
+    }
+}
+#endif // CLIENT

src/assets/map.hpp

@@ -6,6 +6,10 @@
 #include "model.hpp"
 #include "utils/transform.hpp"
 
+#ifdef CLIENT
+#include "gfx/draw_list.hpp"
+#endif // CLIENT
+
 namespace assets
 {
 
@@ -22,6 +26,11 @@ public:
     Map() = default;
     static std::shared_ptr<const Map> LoadFromFile(const std::string& filename);
 
+    const std::shared_ptr<const Model>& GetBaseModel() const { return basemodel_; }
+    const std::vector<MapStaticObject>& GetStaticObjects() const { return static_objects_; }
+
+    CLIENT_ONLY(void Draw(gfx::DrawList& dlist) const;)
+
 private:
     std::shared_ptr<const Model> basemodel_;
     std::vector<MapStaticObject> static_objects_;

src/assets/mesh_builder.cpp

@@ -13,7 +13,7 @@ void assets::MeshBuilder::BeginSurface(gfx::SurfaceFlags sflags, const std::stri
 
     gfx::Surface surface;
     surface.sflags = sflags;
-    surface.texture = texture;
+    surface.texture = std::move(texture);
     surface.first = tris_.size();
     mesh_->surfaces.push_back(surface);
 

src/assets/model.cpp

@@ -6,32 +6,53 @@
 std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::string& filename)
 {
     auto model = std::make_shared<Model>();
+    std::vector<glm::vec3> vert_pos; // rember for collision trimesh
     
-    MeshBuilder mb(gfx::MF_NONE);
+    CLIENT_ONLY(MeshBuilder mb(gfx::MF_NONE);)
 
     LoadCMDFile(filename, [&](const std::string& command, std::istringstream& iss) {
         if (command == "v")
         {
+            glm::vec3 pos;
+            iss >> pos.x >> pos.y >> pos.z;
+
+            CLIENT_ONLY(
                 MeshVertex v;
-            iss >> v.pos.x >> v.pos.y >> v.pos.z;
+                v.pos = pos;
                 iss >> v.normal.x >> v.normal.y >> v.normal.z;
                 iss >> v.uv.x >> v.uv.y;
     
                 // TODO: LUV & bone data
     
                 mb.AddVertex(v);
+            )
+
+            if (model->cmesh_)
+                vert_pos.emplace_back(pos);
         }
         else if (command == "f")
         {
-            MeshTriangle t;
+            uint32_t indices[3];
-            iss >> t.vert[0] >> t.vert[1] >> t.vert[2];
+            iss >> indices[0] >> indices[1] >> indices[2];
             
+            CLIENT_ONLY(
+                MeshTriangle t;
+                t.vert[0] = indices[0];
+                t.vert[1] = indices[1];
+                t.vert[2] = indices[2];
                 mb.AddTriangle(t);
+            )
+
+            if (model->cmesh_)
+            {
+                // FIXME: possible index segfault
+                model->cmesh_->AddTriangle(vert_pos[indices[0]], vert_pos[indices[1]], vert_pos[indices[2]]);
+            }
         }
         else if (command == "surface")
         {
             std::string surface_name, texture_name;
-            gfx::SurfaceFlags sflags = gfx::SF_NONE;
+            CLIENT_ONLY(gfx::SurfaceFlags sflags = gfx::SF_NONE;)
 
             iss >> surface_name;
 
@@ -40,15 +61,24 @@ std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::stri
             while (iss >> flag)
             {
                 if (flag == "+texture")
+                {
                     iss >> texture_name;
+                }
                 else if (flag == "+doublesided")
-                    sflags |= gfx::SF_DOUBLE_SIDED;
+                {
+                    CLIENT_ONLY(sflags |= gfx::SF_DOUBLE_SIDED;)
+                }
                 else if (flag == "+transparent")
-                    sflags |= gfx::SF_TRANSPARENT;
+                {   
+                    CLIENT_ONLY(sflags |= gfx::SF_TRANSPARENT;)
+                }
                 else if (flag == "+ocolor")
-                    sflags |= gfx::SF_OBJECT_COLOR;
+                {
+                    CLIENT_ONLY(sflags |= gfx::SF_OBJECT_COLOR;)
+                }
             }
 
+            CLIENT_ONLY(
                 std::shared_ptr<const gfx::Texture> texture;
                 if (!texture_name.empty())
                 {
@@ -56,6 +86,11 @@ std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::stri
                 }
     
                 mb.BeginSurface(sflags, surface_name, texture);
+            )
+        }
+        else if (command == "makecoltrimesh")
+        {
+            model->cmesh_ = std::make_unique<collision::TriangleMesh>();
         }
         else
         {
@@ -65,7 +100,13 @@ std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::stri
         // TODO: skeleton
     });
     
+    CLIENT_ONLY(
+        mb.Build();
+        model->mesh_ = mb.GetMesh();
+    )
 
+    if (model->cmesh_)
+        model->cmesh_->Build();
 
     return model;
 }

src/assets/model.hpp

@@ -1,21 +1,55 @@
 #pragma once
 
 #include <string>
+#include <memory>
+
+#include "utils/defs.hpp"
+
+#include "collision/trianglemesh.hpp"
+
+#ifdef CLIENT
 #include "mesh_builder.hpp"
+#endif
 
 namespace assets
 {
 
+enum ModelCollisionShapeType
+{
+    MCS_NONE,
+    
+    MCS_BOX,
+    MCS_SPHERE,
+};
+
+struct ModelCollisionShape
+{
+    ModelCollisionShapeType type = MCS_NONE;
+    glm::vec3 origin = glm::vec3(0.0f);
+    union
+    {
+        float radius;
+        glm::vec3 half_extents;
+    };
+};
+
 class Model
 {
 public:
     Model() = default;
     static std::shared_ptr<const Model> LoadFromFile(const std::string& filename);
 
-    const std::shared_ptr<const Mesh>& GetMesh() const { return mesh_; }
+    const collision::TriangleMesh* GetColMesh() const { return cmesh_.get(); }
+    const std::vector<ModelCollisionShape>& GetColShapes() const { return cshapes_; }
+
+    CLIENT_ONLY(const std::shared_ptr<const Mesh>& GetMesh() const { return mesh_; })
 
 private:
-    std::shared_ptr<const Mesh> mesh_;
+    std::unique_ptr<collision::TriangleMesh> cmesh_;
+    std::vector<ModelCollisionShape> cshapes_;
+
+    CLIENT_ONLY(std::shared_ptr<const Mesh> mesh_;)
+
 };
 
 }

src/assets/vehiclemdl.cpp

@@ -0,0 +1,43 @@
+#include "vehiclemdl.hpp"
+
+#include "cache.hpp"
+#include "cmdfile.hpp"
+
+std::shared_ptr<const assets::VehicleModel> assets::VehicleModel::LoadFromFile(const std::string& filename)
+{
+    auto veh = std::shared_ptr<VehicleModel>();
+
+    LoadCMDFile(filename, [&](const std::string& command, std::istringstream& iss) {
+        if (command == "basemodel")
+        {
+            std::string model_name;
+            iss >> model_name;
+
+            veh->basemodel_ = CacheManager::GetModel("data/" + model_name + ".mdl");
+        }
+        else if (command == "wheel")
+        {
+            VehicleWheel wheel;
+
+            std::string type_str;
+            std::string model_name;
+            iss >> type_str >> model_name;
+
+            if (type_str == "FL")
+                wheel.type = WHEEL_FL;
+            else if (type_str == "FR")
+                wheel.type = WHEEL_FR;
+            else if (type_str == "RL")
+                wheel.type = WHEEL_RL;
+            else if (type_str == "RR")
+                wheel.type = WHEEL_RR;
+
+            wheel.model = assets::CacheManager::GetModel("data/" + model_name + ".mdl");
+
+            iss >> wheel.position.x >> wheel.position.y >> wheel.position.z;
+            iss >> wheel.radius;
+
+            veh->wheels_.emplace_back(wheel);
+        }
+    });
+}

src/assets/vehiclemdl.hpp

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "model.hpp"
+#include "utils/transform.hpp"
+
+namespace assets
+{
+
+enum VehicleWheelType
+{
+    WHEEL_REAR = 1,
+    WHEEL_RIGHT = 2,
+
+    WHEEL_FL = 0,
+    WHEEL_FR = WHEEL_RIGHT,
+    WHEEL_RL = WHEEL_REAR | WHEEL_RIGHT,
+    WHEEL_RR = WHEEL_REAR | WHEEL_RIGHT,
+};
+
+struct VehicleWheel
+{
+    VehicleWheelType type = WHEEL_FL;
+    std::shared_ptr<const Model> model;
+    glm::vec3 position;
+    float radius;
+};
+
+class VehicleModel
+{
+public:
+    VehicleModel() = default;
+
+    static std::shared_ptr<const VehicleModel> LoadFromFile(const std::string& filename);
+
+    const std::shared_ptr<const Model>& GetModel() { return basemodel_; } 
+    const std::vector<VehicleWheel>& GetWheels() { return wheels_; }
+
+private:
+    std::shared_ptr<const Model> basemodel_;
+    std::vector<VehicleWheel> wheels_;
+
+
+};
+
+}

src/client/app.cpp

@@ -2,6 +2,11 @@
 
 #include <iostream>
 
+#include "net/defs.hpp"
+#include "net/outmessage.hpp"
+
+#include "gameview/worldview.hpp"
+
 App::App()
 {
 	std::cout << "Initializing App..." << std::endl;
@@ -30,8 +35,53 @@ void App::Frame()
 	float aspect = static_cast<float>(viewport_size_.x) / static_cast<float>(viewport_size_.y);
 
 	renderer_.Begin(viewport_size_.x, viewport_size_.y);
+	renderer_.ClearColor(glm::vec3(0.3f, 0.9f, 1.0f));
+	renderer_.ClearDepth();
 
-	// TODO: draw world
+	dlist_.Clear();
+
+	const game::view::WorldView* world;
+	if (session_ && (world = session_->GetWorld()))
+	{
+		world->Draw(dlist_);
+	
+		glm::mat4 view = glm::lookAt(glm::vec3(80.0f, 0.0f, 10.0f), glm::vec3(40.0f, 0.0f, 0.0f), glm::vec3(0.0f, 0.0f, 1.0f));
+		glm::mat4 proj = glm::perspective(glm::radians(45.0f), aspect, 0.1f, 3000.0f);
+	
+		gfx::DrawListParams params;
+		params.view_proj = proj * view;
+	
+		renderer_.DrawList(dlist_, params);
+	}
+}
+
+void App::Connected()
+{
+	std::cout << "WS connected" << std::endl;
+
+	// init session
+	session_ = std::make_unique<game::view::ClientSession>();
+
+	// send login
+	auto msg = BeginMsg(net::MSG_ID);
+	net::PlayerName name;
+	msg.Write(name);
+}
+
+void App::ProcessMessage(net::InMessage& msg)
+{
+	if (!session_)
+		return;
+
+	session_->ProcessMessage(msg);
+}
+
+void App::Disconnected(const std::string& reason)
+{
+	std::cout << "WS disconnected" << std::endl;
+
+	// close session
+	session_.reset();
 }
 
 void App::MouseMove(const glm::vec2& delta)

src/client/app.hpp

@@ -1,10 +1,37 @@
 #pragma once
 
+#include <functional>
+
 #include "game/player_input.hpp"
 #include "gfx/renderer.hpp"
+#include "net/msg_producer.hpp"
+#include "net/inmessage.hpp"
 
-class App
+#include "gameview/client_session.hpp"
+
+class App : public net::MsgProducer
 {
+
+public:
+    App();
+
+    void Frame();
+
+    void Connected();
+    void ProcessMessage(net::InMessage& msg);
+    void Disconnected(const std::string& reason);
+
+    void SetTime(float time) { time_ = time; }
+    void SetViewportSize(int width, int height) { viewport_size_ = {width, height}; }
+    void SetInput(game::PlayerInputFlags input) { input_ = input; }
+    void MouseMove(const glm::vec2& delta);
+
+    ~App();
+
+private:
+    void Send(std::vector<char> data);
+
+private:
     float time_ = 0.0f;
     glm::ivec2 viewport_size_ = {800, 600};
     game::PlayerInputFlags input_ = 0;
@@ -13,17 +40,7 @@ class App
     float prev_time_ = 0.0f;
 
     gfx::Renderer renderer_;
+    gfx::DrawList dlist_;
 
-public:
+    std::unique_ptr<game::view::ClientSession> session_;
-    App();
-
-    void Frame();
-
-    void SetTime(float time) { time_ = time; }
-	void SetViewportSize(int width, int height) { viewport_size_ = { width, height }; }
-	void SetInput(game::PlayerInputFlags input) { input_ = input; }
-    void MouseMove(const glm::vec2& delta);
-
-    ~App();
 };
-

src/client/main.cpp

@@ -1,13 +1,16 @@
 #include <SDL.h>
 #include <iostream>
 #include <memory>
-#include "app.hpp"
+#include <vector>
 
 #ifdef EMSCRIPTEN
 #include <emscripten.h>
 #include <emscripten/html5_webgl.h>
-#endif
+#else
+#include <easywsclient.hpp>
+#endif // EMSCRIPTEN
 
+#include "app.hpp"
 #include "gl.hpp"
 
 static SDL_Window *s_window = nullptr;
@@ -155,39 +158,39 @@ static void Frame()
 	const uint8_t* kbd_state = SDL_GetKeyboardState(nullptr);
     
     if (kbd_state[SDL_GetScancodeFromKey(SDLK_w)])
-		input |= game::PI_FORWARD;
+		input |= game::IN_FORWARD;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_s)])
-		input |= game::PI_BACKWARD;
+		input |= game::IN_BACKWARD;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_a)])
-		input |= game::PI_LEFT;
+		input |= game::IN_LEFT;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_d)])
-		input |= game::PI_RIGHT;
+		input |= game::IN_RIGHT;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_SPACE)])
-		input |= game::PI_JUMP;
+		input |= game::IN_JUMP;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_LCTRL)])
-		input |= game::PI_CROUCH;
+		input |= game::IN_CROUCH;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_e)])
-		input |= game::PI_USE;
+		input |= game::IN_USE;
 
     if (kbd_state[SDL_GetScancodeFromKey(SDLK_F3)])
-		input |= game::PI_DEBUG1;
+		input |= game::IN_DEBUG1;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_F4)])
-		input |= game::PI_DEBUG2;
+		input |= game::IN_DEBUG2;
 
 	if (kbd_state[SDL_GetScancodeFromKey(SDLK_F5)])
-		input |= game::PI_DEBUG3;
+		input |= game::IN_DEBUG3;
 
 	int mouse_state = SDL_GetMouseState(nullptr, nullptr);
 
 	if (mouse_state & SDL_BUTTON(SDL_BUTTON_LEFT))
-		input |= game::PI_ATTACK;
+		input |= game::IN_ATTACK;
 
 
 	s_app->SetInput(input);
@@ -216,16 +219,58 @@ static void Main() {
 #ifdef EMSCRIPTEN
     emscripten_set_main_loop(Frame, 0, true);
 #else
+    {
+        using namespace easywsclient;
+
+        auto ws = std::unique_ptr<WebSocket>(WebSocket::from_url("ws://127.0.0.1:8080/ws"));
+        bool connected = false;
+        
+        std::vector<uint8_t> data;
+
         while (!s_quit)
         {
+            ws->poll();
+
+            auto ws_state = ws->getReadyState();
+            if (ws_state == WebSocket::OPEN && !connected)
+            {
+                connected = true;
+                s_app->Connected();
+            }
+            else if (ws_state != WebSocket::CLOSED && connected)
+            {
+                connected = false;
+                s_app->Disconnected("WS closed");
+            }
+
+            ws->dispatchBinary([&](const std::vector<uint8_t>& data) {
+                net::InMessage msg(reinterpret_cast<const char*>(data.data()), data.size());
+                s_app->ProcessMessage(msg);
+            });
+
             Frame();
+
+            if (connected)
+            {
+                auto msg = s_app->GetMsg();
+                if (!msg.empty())
+                {
+                    data.resize(msg.size_bytes());
+                    memcpy(data.data(), msg.data(), msg.size_bytes());
+                    ws->sendBinary(data);
+                }
+            }
+
+            s_app->ResetMsg();
+        }
+        
     }
 
     s_app.reset();
 
     ShutdownGL();
     ShutdownSDL();
-#endif
+#endif // EMSCRIPTEN
 }
 
 int main(int argc, char *argv[])

src/collision/dynamicsworld.cpp

@@ -0,0 +1,52 @@
+#include "dynamicsworld.hpp"
+
+#include <stdexcept>
+
+collision::DynamicsWorld::DynamicsWorld(std::shared_ptr<const assets::Map> map)
+    : map_(std::move(map)), bt_dispatcher_(&bt_cfg_),
+      bt_world_(&bt_dispatcher_, &bt_broadphase_, &bt_solver_, &bt_cfg_), bt_veh_raycaster_(&bt_world_)
+{
+    AddMapCollision();
+}
+
+void collision::DynamicsWorld::AddMapCollision()
+{
+    if (!map_) // is perfectly possible that there is no map in this world
+        return;
+
+    // add basemodel
+    const auto& basemodel = map_->GetBaseModel();
+    if (basemodel)
+    {
+        Transform identity;
+        AddModelInstance(*basemodel, identity);
+    }
+
+    // add static objects
+    for (const auto& sobjs = map_->GetStaticObjects(); const auto& sobj : sobjs)
+    {
+        AddModelInstance(*sobj.model, sobj.transform);
+    }
+}
+
+void collision::DynamicsWorld::AddModelInstance(const assets::Model& model, const Transform& trans)
+{
+    if (auto cmesh = model.GetColMesh(); cmesh)
+    {
+        // create trimesh object
+        auto obj = std::make_unique<btCollisionObject>();
+        obj->setCollisionShape(cmesh->GetShape());
+
+        // set transform
+        obj->setWorldTransform(trans.ToBtTransform());
+
+        // add to world
+        bt_world_.addCollisionObject(obj.get());
+        static_objs_.emplace_back(std::move(obj));
+    }
+
+    for (const auto& shapes = model.GetColShapes(); const auto& shape : shapes)
+    {
+        // TODO: add basic shapes
+    }
+}

src/collision/dynamicsworld.hpp

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <map>
+
+#include <btBulletDynamicsCommon.h>
+
+#include "assets/map.hpp"
+
+namespace collision
+{
+
+class DynamicsWorld
+{
+public:
+    DynamicsWorld(std::shared_ptr<const assets::Map> map);
+
+    btDynamicsWorld& GetBtWorld() { return bt_world_; }
+    const btDynamicsWorld& GetBtWorld() const { return bt_world_; }
+    btVehicleRaycaster& GetVehicleRaycaster() { return bt_veh_raycaster_; }
+
+    const std::shared_ptr<const assets::Map>& GetMap() const { return map_; }
+    
+private:
+    void AddMapCollision();
+    void AddModelInstance(const assets::Model& model, const Transform& trans);
+
+private:
+    // this is BEFORE bt_world_!!!
+    std::shared_ptr<const assets::Map> map_;
+    std::vector<std::unique_ptr<btCollisionObject>> static_objs_;
+    // ^-----
+
+    btDefaultCollisionConfiguration bt_cfg_;
+    btCollisionDispatcher bt_dispatcher_;
+    btDbvtBroadphase bt_broadphase_;
+    btSequentialImpulseConstraintSolver bt_solver_;
+    btDiscreteDynamicsWorld bt_world_;
+    btDefaultVehicleRaycaster bt_veh_raycaster_;
+
+};
+
+} // namespace collision

src/collision/motionstate.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "utils/transform.hpp"
+#include <btBulletDynamicsCommon.h>
+
+namespace collision
+{
+
+class MotionState : public btMotionState
+{
+public:
+    MotionState(Transform& transform) : transform_(transform) {}
+
+    void getWorldTransform(btTransform& bt_trans) const override {
+        bt_trans = transform_.ToBtTransform();
+    }
+
+    void setWorldTransform(const btTransform& bt_trans) override {
+        transform_.SetBtTransform(bt_trans);
+    }
+
+private:
+    Transform& transform_;
+};
+
+}

src/collision/trianglemesh.hpp

@@ -22,6 +22,6 @@ namespace collision
 		void AddTriangle(const glm::vec3& v0, const glm::vec3& v1, const glm::vec3& v2);
 		void Build();
 
-		btBvhTriangleMeshShape* GetShape() { return bt_shape_.get(); }
+		btBvhTriangleMeshShape* GetShape() const { return bt_shape_.get(); }
 	};
 }

src/game/entity.cpp

@@ -0,0 +1,5 @@
+#include "entity.hpp"
+
+#include "world.hpp"
+
+game::Entity::Entity(World& world, net::EntType viewtype) : world_(world), entnum_(world.GetNewEntnum()), viewtype_(viewtype) {}

src/game/entity.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <vector>
+
+#include "net/msg_producer.hpp"
+#include "transform_node.hpp"
+
+namespace game
+{
+
+class World;
+class Player;
+
+class Entity : public net::MsgProducer
+{
+public:
+    Entity(World& world, net::EntType viewtype);
+
+    net::EntNum GetEntNum() const { return entnum_; }
+    net::EntType GetViewType() const { return viewtype_; }
+
+    virtual void Update() { ResetMsg(); }
+    virtual void SendInitData(Player& player, net::OutMessage& msg) const {}
+
+protected:
+    World& world_;
+    const net::EntNum entnum_;
+    const net::EntType viewtype_;
+
+    TransformNode root_;
+};
+
+}

src/game/game.cpp

@@ -0,0 +1,8 @@
+#include "game.hpp"
+
+game::Game::Game()
+{
+    default_world_ = std::make_shared<World>("openworld");
+
+    
+}

src/game/game.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <map>
+
+#include "world.hpp"
+
+namespace game
+{
+
+class Game
+{
+public:
+    Game();
+
+private:
+    std::shared_ptr<World> default_world_;
+
+};
+
+}

src/game/player.cpp

@@ -0,0 +1,114 @@
+#include "player.hpp"
+
+#include "world.hpp"
+
+game::Player::Player(Game& game, std::string name) : game_(game), name_(std::move(name)) {}
+
+bool game::Player::ProcessMsg(net::MessageType type, net::InMessage& msg)
+{
+    switch (type)
+    {
+    case net::MSG_IN:
+        return ProcessInputMsg(msg);
+    default:
+        return false;
+    }
+}
+
+void game::Player::Update()
+{
+    if (world_ != known_world_)
+    {
+        SendWorldMsg();
+        known_world_ = world_;
+        known_ents_.clear();
+    }
+
+    if (world_)
+        SyncEntities();
+}
+
+void game::Player::SendWorldMsg()
+{
+    auto msg = BeginMsg(net::MSG_CHWORLD);
+    msg.Write(net::MapName(world_->GetMapName()));
+}
+
+void game::Player::SyncEntities()
+{
+    const auto& ents = world_->GetEntities();
+
+    auto ent_it = ents.begin();
+    auto know_it = known_ents_.begin();
+
+    while (ent_it != ents.end() || know_it != known_ents_.end())
+    {
+        const net::EntNum entnum = (ent_it != ents.end() ? ent_it->first : std::numeric_limits<net::EntNum>::max());
+        const net::EntNum knownum = (know_it != known_ents_.end() ? *know_it : std::numeric_limits<net::EntNum>::max());
+
+        if (entnum == knownum) // ----- entity exists and is currently known -----
+        {
+            const Entity& e = *ent_it->second;
+            if (ShouldSeeEntity(e)) // still visible?
+            {
+                SendUpdateEntity(e); // 2) update
+                ++ent_it;
+                ++know_it;
+            }
+            else // vanished for player
+            {
+                SendDestroyEntity(knownum);           // 3) destroy
+                know_it = known_ents_.erase(know_it); // remove from known
+                ++ent_it;
+            }
+        }
+        else if (entnum < knownum) // ----- entity exists, player does NOT know it -----
+        {
+            const Entity& e = *ent_it->second;
+            if (ShouldSeeEntity(e)) // 1) become visible
+            {
+                SendInitEntity(e);
+                known_ents_.insert(entnum); // add to known
+            } // else: stays invisible, nothing to do
+            ++ent_it;
+        }
+        else // ----- player knows it, but it no longer exists -----
+        {
+            SendDestroyEntity(knownum);           // 3) destroy
+            know_it = known_ents_.erase(know_it); // remove from known
+        }
+    }
+}
+
+bool game::Player::ShouldSeeEntity(const Entity& entity) const
+{
+    return true; // TODO: check distance?
+}
+
+void game::Player::SendInitEntity(const Entity& entity)
+{
+    auto msg = BeginMsg(net::MSG_ENTSPAWN);
+    msg.Write(entity.GetEntNum());
+    msg.Write(entity.GetViewType());
+    entity.SendInitData(*this, msg);
+}
+
+void game::Player::SendUpdateEntity(const Entity& entity)
+{
+    auto msg = BeginMsg(); // no CMD here, these are already included in entity message payload!
+    msg.Write(entity.GetMsg());
+}
+
+void game::Player::SendDestroyEntity(net::EntNum entnum)
+{
+    auto msg = BeginMsg(net::MSG_ENTDESTROY);
+    msg.Write(entnum);
+}
+
+bool game::Player::ProcessInputMsg(net::InMessage& msg)
+{
+    if (!msg.Read(in_))
+        return false;
+
+    return true;
+}

src/game/player.hpp

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <set>
+
+#include "server/client.hpp"
+#include "net/msg_producer.hpp"
+
+#include "player_input.hpp"
+#include "game.hpp"
+
+namespace game
+{
+
+class World;
+class Entity;
+
+enum PlayerState
+{
+    PS_NONE,
+    PS_CHARACTER,
+    PS_VEHICLE,
+};
+
+class Player : public net::MsgProducer
+{
+public:
+    Player(Game& game, std::string name);
+
+    bool ProcessMsg(net::MessageType type, net::InMessage& msg);
+    void Update();
+
+private:
+    void SendWorldMsg();
+
+    // entities sync
+    void SyncEntities();
+    bool ShouldSeeEntity(const Entity& entity) const;
+    void SendInitEntity(const Entity& entity);
+    void SendUpdateEntity(const Entity& entity);
+    void SendDestroyEntity(net::EntNum entnum);
+
+    // msg handlers
+    bool ProcessInputMsg(net::InMessage& msg);
+
+private:
+    Game& game_;
+    std::string name_;
+
+    World* world_ = nullptr;
+    World* known_world_ = nullptr;
+    std::set<net::EntNum> known_ents_;
+
+    PlayerInputFlags in_;
+
+    PlayerState state_;
+
+};
+
+}

src/game/player_input.hpp

@@ -8,16 +8,16 @@ namespace game
 
 	enum PlayerInputFlag : PlayerInputFlags
 	{
-		PI_FORWARD		= 1 << 0,
+		IN_FORWARD		= 1 << 0,
-		PI_BACKWARD		= 1 << 1,
+		IN_BACKWARD		= 1 << 1,
-		PI_LEFT			= 1 << 2,
+		IN_LEFT			= 1 << 2,
-		PI_RIGHT		= 1 << 3,
+		IN_RIGHT		= 1 << 3,
-		PI_JUMP			= 1 << 4,
+		IN_JUMP			= 1 << 4,
-		PI_CROUCH		= 1 << 5,
+		IN_CROUCH		= 1 << 5,
-		PI_USE			= 1 << 6,
+		IN_USE			= 1 << 6,
-		PI_ATTACK		= 1 << 7,
+		IN_ATTACK		= 1 << 7,
-		PI_DEBUG1		= 1 << 8,
+		IN_DEBUG1		= 1 << 8,
-		PI_DEBUG2		= 1 << 9,
+		IN_DEBUG2		= 1 << 9,
-		PI_DEBUG3		= 1 << 10,
+		IN_DEBUG3		= 1 << 10,
 	};
 }

src/game/transform_node.hpp

@@ -7,7 +7,7 @@ namespace game
 	struct TransformNode
 	{
 		const TransformNode* parent = nullptr;
-		Transform local_transform;
+		Transform local;
 		glm::mat4 matrix = glm::mat4(1.0f); // Global
 
 		TransformNode()
@@ -17,7 +17,7 @@ namespace game
 
 		void UpdateMatrix()
 		{
-			matrix = local_transform.ToMatrix();
+			matrix = local.ToMatrix();
 			
 			if (parent)
 			{

src/game/vehicle.cpp

@@ -0,0 +1,34 @@
+#include "vehicle.hpp"
+
+#include "assets/cache.hpp"
+
+static std::shared_ptr<const assets::VehicleModel> LoadVehicleModelByName(const std::string& model_name)
+{
+    return assets::CacheManager::GetVehicleModel("data/" + model_name + ".map");
+}
+
+
+
+game::Vehicle::Vehicle(World& world, std::string model_name) :
+    Entity(world, net::ET_VEHICLE),
+    model_name_(model_name),
+    model_(LoadVehicleModelByName(model_name)),
+    motion_(root_.local)
+{
+    // setup chassis rigidbody
+    float mass = 300.0f;
+    static btBoxShape shape(btVector3(1, 1, 1));
+    
+    btVector3 local_inertia(0, 0, 0);
+    shape.calculateLocalInertia(mass, local_inertia);
+
+    btRigidBody::btRigidBodyConstructionInfo rb_info(mass, &motion_, &shape, local_inertia);
+    body_ = std::make_unique<btRigidBody>(rb_info);
+
+    // setup vehicle
+    btRaycastVehicle::btVehicleTuning tuning;
+    vehicle_ = std::make_unique<btRaycastVehicle>(tuning, body_.get(), &world_.GetVehicleRaycaster());
+    vehicle_->setCoordinateSystem(0, 2, 1);
+    
+}
+

src/game/vehicle.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "entity.hpp"
+#include "world.hpp"
+#include "assets/vehiclemdl.hpp"
+#include "collision/motionstate.hpp"
+
+namespace game
+{
+
+class Vehicle : public Entity
+{
+public:
+    Vehicle(World& world, std::string model_name);
+
+private:
+    std::string model_name_;
+    std::shared_ptr<const assets::VehicleModel> model_;
+
+    collision::MotionState motion_;
+    std::unique_ptr<btRigidBody> body_;
+    std::unique_ptr<btRaycastVehicle> vehicle_;
+};
+
+}

src/game/world.cpp

@@ -0,0 +1,44 @@
+#include "world.hpp"
+
+#include <stdexcept>
+
+#include "assets/cache.hpp"
+#include "utils/allocnum.hpp"
+
+static std::shared_ptr<const assets::Map> LoadMapByName(const std::string& mapname)
+{
+    return assets::CacheManager::GetMap("data/" + mapname + ".map");
+}
+
+game::World::World(std::string mapname) : DynamicsWorld(LoadMapByName(mapname)), mapname_(std::move(mapname)) {}
+
+net::EntNum game::World::GetNewEntnum()
+{
+    auto entnum = utils::AllocNum(ents_, last_entnum_);
+
+    if (!entnum)
+        throw std::runtime_error("Max entities reached");
+
+    return entnum;
+}
+
+void game::World::RegisterEntity(std::unique_ptr<Entity> ent)
+{
+    auto& entslot = ents_[ent->GetEntNum()];
+
+    if (entslot)
+        throw std::runtime_error("Attempted to register entity with an occupied entnum");
+
+    entslot = std::move(ent);
+}
+
+void game::World::Update(int64_t delta_time)
+{
+    time_ms_ += delta_time;
+    GetBtWorld().stepSimulation(static_cast<float>(delta_time) * 1000.0f);
+
+    for (auto& [entnum, ent] : ents_)
+    {
+        ent->Update();
+    }
+}

src/game/world.hpp

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <concepts>
+
+#include "assets/map.hpp"
+#include "collision/dynamicsworld.hpp"
+#include "entity.hpp"
+#include "net/defs.hpp"
+
+namespace game
+{
+
+class World : public collision::DynamicsWorld
+{
+public:
+    World(std::string mapname);
+
+    // spawn entity of type T
+    template <std::derived_from<Entity> T, typename... TArgs>
+    T& Spawn(TArgs&&... args)
+    {
+        auto ent = std::make_unique<T>(*this, std::forward<TArgs>(args)...);
+        auto& ref = *ent;
+        RegisterEntity(std::move(ent));
+        return ref;
+    }
+
+    net::EntNum GetNewEntnum();
+    void RegisterEntity(std::unique_ptr<Entity> ent);
+
+    void Update(int64_t delta_time);
+
+    const std::string& GetMapName() const { return mapname_; }
+    const std::map<net::EntNum, std::unique_ptr<Entity>>& GetEntities() const { return ents_; }
+    int64_t GetTime() const { return time_ms_; }
+
+private:
+    std::string mapname_;
+    std::map<net::EntNum, std::unique_ptr<Entity>> ents_;
+    net::EntNum last_entnum_ = 0;
+
+    int64_t time_ms_ = 0;
+};
+
+} // namespace game

src/gameview/client_session.cpp

@@ -0,0 +1,46 @@
+#include "client_session.hpp"
+
+game::view::ClientSession::ClientSession(App& app) : app_(app) {}
+
+bool game::view::ClientSession::ProcessMessage(net::InMessage& msg)
+{
+    while (true)
+    {
+        net::MessageType type = net::MSG_NONE;
+        if (!msg.Read(type))
+            break;
+
+        if (type == net::MSG_NONE || type >= net::MSG_COUNT)
+            return false;
+
+        ProcessSingleMessage(type, msg);
+    }
+}
+
+bool game::view::ClientSession::ProcessSingleMessage(net::MessageType type, net::InMessage& msg)
+{
+    switch (type)
+    {
+    case net::MSG_CHWORLD:
+        return ProcessWorldMsg(msg);
+
+    default:
+        // try pass the msg to world
+        if (world_ && world_->ProcessMsg(type, msg))
+            return true;
+
+        return false;
+    }
+}
+
+bool game::view::ClientSession::ProcessWorldMsg(net::InMessage& msg)
+{
+    net::MapName mapname;
+    if (!msg.Read(mapname))
+        return false;
+
+    // TODO: pass mapname
+    world_ = std::make_unique<WorldView>();
+
+    return true;
+}

src/gameview/client_session.hpp

@@ -1,12 +1,36 @@
 #pragma once
 
+#include <memory>
+
+#include "worldview.hpp"
+
+#include "client/app.hpp"
+#include "gfx/draw_list.hpp"
+#include "net/defs.hpp"
+#include "net/inmessage.hpp"
+
 namespace game::view
 {
 
 class ClientSession
 {
 public:
+    ClientSession(App& app);
+
+    bool ProcessMessage(net::InMessage& msg);
+    bool ProcessSingleMessage(net::MessageType type, net::InMessage& msg);
+
+    const WorldView* GetWorld() const { return world_.get(); } 
+
 private:
+    // msg handlers
+    bool ProcessWorldMsg(net::InMessage& msg);
+
+private:
+    App& app_;
+    
+    std::unique_ptr<WorldView> world_;
+
 };
 
 } // namespace game::view

src/gameview/entityview.hpp

@@ -1,8 +1,13 @@
 #pragma once
 
+#include <stdexcept>
+
 #include "game/transform_node.hpp"
 #include "gfx/draw_list.hpp"
 
+#include "net/defs.hpp"
+#include "net/inmessage.hpp"
+
 class World;
 
 namespace game::view
@@ -13,9 +18,12 @@ class EntityView
 public:
     EntityView(World& world) : world_(world) {}
 
-    virtual void Draw(gfx::DrawList& dlist) {}
+    virtual bool ProcessMsg( net::InMessage& msg) { return false; }
+
     virtual void Update() {}
 
+    virtual void Draw(gfx::DrawList& dlist) {}
+
 protected:
     World& world_;
     TransformNode root_;

src/gameview/worldview.cpp

@@ -0,0 +1,69 @@
+#include "worldview.hpp"
+
+#include "assets/cache.hpp"
+
+game::view::WorldView::WorldView()
+{
+    map_ = assets::CacheManager::GetMap("data/openworld.map");
+}
+
+bool game::view::WorldView::ProcessMsg(net::MessageType type, net::InMessage& msg)
+{
+    switch (type)
+    {
+    case net::MSG_ENTSPAWN:
+        return ProcessEntSpawnMsg(msg);
+
+    case net::MSG_ENTMSG:
+        return ProcessEntMsgMsg(msg);
+
+    case net::MSG_ENTDESTROY:
+        return ProcessEntDestroyMsg(msg);
+
+    default:
+        return false;
+    }
+}
+
+void game::view::WorldView::Draw(gfx::DrawList& dlist) const
+{
+    if (map_)
+        map_->Draw(dlist);
+}
+
+bool game::view::WorldView::ProcessEntSpawnMsg(net::InMessage& msg)
+{
+    net::EntNum entnum;
+    net::EntType type;
+
+    if (!msg.Read(entnum) || !msg.Read(type))
+        return false;
+
+    auto& entslot = ents_[entnum];
+    if (entslot)
+        entslot.reset();
+
+    switch (type)
+    {
+
+    default:
+        return false;
+    }
+
+    return true;
+}
+
+bool game::view::WorldView::ProcessEntMsgMsg(net::InMessage& msg)
+{
+    return false;
+}
+
+bool game::view::WorldView::ProcessEntDestroyMsg(net::InMessage& msg)
+{
+    net::EntNum entnum;
+    if (!msg.Read(entnum))
+        return false;
+
+    ents_.erase(entnum);
+    return true;
+}

src/gameview/worldview.hpp

@@ -1,13 +1,34 @@
 #pragma once
 
+#include "assets/map.hpp"
+#include "gfx/draw_list.hpp"
+#include "net/defs.hpp"
+#include "net/inmessage.hpp"
+
+#include "entityview.hpp"
+
 namespace game::view
 {
 
 class WorldView
 {
 public:
+    WorldView();
+
+    bool ProcessMsg(net::MessageType type, net::InMessage& msg);
+
+    void Draw(gfx::DrawList& dlist) const;
 
 private:
+    // msg handlers
+    bool ProcessEntSpawnMsg(net::InMessage& msg);
+    bool ProcessEntMsgMsg(net::InMessage& msg);
+    bool ProcessEntDestroyMsg(net::InMessage& msg);
+
+private:
+    std::shared_ptr<const assets::Map> map_;
+
+    std::map<net::EntNum, std::unique_ptr<EntityView>> ents_;
     
 };
 

src/gfx/draw_list.hpp

@@ -2,7 +2,6 @@
 
 #include <vector>
 
-#include "assets/map.hpp"
 #include "assets/skeleton.hpp"
 #include "surface.hpp"
 
@@ -11,12 +10,12 @@ namespace gfx
 
 struct DrawSurfaceCmd
 {
-    const Surface* surface;
+    const Surface* surface = nullptr;
-    const glm::mat4* matrices; // model matrix, continues in array of matrices for skeletal meshes
+    const glm::mat4* matrices = nullptr; // model matrix, continues in array of matrices for skeletal meshes
-    const glm::vec4* color;    // optional tint
+    const glm::vec4* color = nullptr;    // optional tint
-    uint32_t first;            // first triangle index
+    uint32_t first = 0;                  // first triangle index
-    uint32_t count;            // num triangles
+    uint32_t count = 0;                  // num triangles
-    float dist;                // distance to camera - for transparnt sorting
+    float dist = 0.0f;                   // distance to camera - for transparnt sorting
 };
 
 struct DrawList

src/gfx/renderer.cpp

@@ -96,6 +96,8 @@ void gfx::Renderer::DrawSurfaceList(std::span<DrawSurfaceCmd> list, const DrawLi
 
 		if (auto cmp = sa->va.get() <=> sb->va.get(); cmp != 0)
 			return cmp < 0;
+
+		return false;
 	});
 
 	glEnable(GL_DEPTH_TEST);
@@ -140,7 +142,15 @@ void gfx::Renderer::DrawSurfaceList(std::span<DrawSurfaceCmd> list, const DrawLi
 		SetupMeshShader(mshader, params);
 
 		// set model matrix
+		if (cmd.matrices)
+		{
 			glUniformMatrix4fv(mshader.shader->U(gfx::SU_MODEL), 1, GL_FALSE, &cmd.matrices[0][0][0]);
+		}
+		else
+		{ // use identity if no matrix provided
+			static const glm::mat4 identity(1.0f);
+			glUniformMatrix4fv(mshader.shader->U(gfx::SU_MODEL), 1, GL_FALSE, &identity[0][0]);
+		}
 
 		// set color
 		glm::vec4 color = (object_color_flag && cmd.color) ? glm::vec4(*cmd.color) : glm::vec4(1.0f);

src/gfx/shader_sources.cpp

@@ -85,7 +85,8 @@ void main() {
     gl_Position = u_view_proj * world_pos;
 
     v_uv = vec2(a_uv.x, 1.0 - a_uv.y);
-    v_color = ComputeLights(world_pos.xyz, world_normal) * a_color;
+    // v_color = ComputeLights(world_pos.xyz, world_normal) * a_color;
+    v_color = a_color;
 }	
 )GLSL",
 

src/net/defs.hpp

@@ -14,7 +14,10 @@ enum MessageType : uint8_t
     MSG_NONE,
 
     /*~~~~~~~~ Client->Server ~~~~~~~~*/
-    // IN <PlayerInputFlags> <ViewYaw> <ViewPitch>
+    // ID <PlayerName>
+    MSG_ID,
+
+    // IN <PlayerInputFlags> <ViewYawQ> <ViewPitchQ>
     MSG_IN,
 
     /*~~~~~~~~ World ~~~~~~~~*/
@@ -26,17 +29,22 @@ enum MessageType : uint8_t
     MSG_ENTSPAWN,
     // ENTMSG <EntNum> data...
     MSG_ENTMSG,
-    // ENTRM <EntNum>
+    // ENTDESTROY <EntNum>
-    MSG_ENTRM,
+    MSG_ENTDESTROY,
 
     /*~~~~~~~~~~~~~~~~*/
     MSG_COUNT,
 };
 
+using PlayerName = FixedStr<24>;
 using MapName = FixedStr<32>;
 
-using ViewYaw = Quantized<uint16_t, 0, 360>;
+// pi approx fraction
-using ViewPitch = Quantized<uint16_t, -180, 180>;
+constexpr long long PI_N = 245850922;
+constexpr long long PI_D = 78256779;
+
+using ViewYawQ = Quantized<uint16_t, 0, 2 * PI_N, PI_D>;
+using ViewPitchQ = Quantized<uint16_t, -PI_N, PI_N, PI_D>;
 
 using EntNum = uint16_t;
 
@@ -44,10 +52,17 @@ enum EntType : uint8_t
 {
     ET_NONE,
 
-    ET_PAWN,
+    ET_CHARACTER,
-    ET_CAR,
+    ET_VEHICLE,
 
     ET_COUNT,
 };
 
+enum EntMsgType : uint8_t 
+{
+    EMSG_NONE,
+
+    EMSG_UPDATE,
+};
+
 } // namespace net

src/net/fixed_str.hpp

@@ -14,7 +14,12 @@ struct FixedStr
     size_t len = 0;
     char str[N];
 
-    size_t MaxLen() const { return N; }
+    FixedStr() = default;
+
+    FixedStr(const std::string& stdstr)
+    {
+        *this = stdstr;
+    }
     
     FixedStr& operator=(const std::string& stdstr)
     {
@@ -23,6 +28,8 @@ struct FixedStr
         memcpy(str, stdstr.data(), putsize);
     }
 
+    size_t MaxLen() const { return N; }
+    
     operator std::string() { return std::string(str, len); }
     operator std::string_view() { return std::string_view(str, len); }
 };

src/net/inmessage.hpp

@@ -24,6 +24,11 @@ public:
         return ptr_ + n <= end_;
     }
 
+    bool Eof() const
+    {
+        return ptr_ < end_;
+    }
+
     bool Read(char* dest, size_t n)
     {
         if (!CheckAvail(n))
@@ -45,6 +50,17 @@ public:
         return true;
     }
 
+    template <typename T> requires (std::is_enum_v<T> && std::integral<std::underlying_type_t<T>>)
+    bool Read(T& value)
+    {
+        std::underlying_type_t<T> und;
+        if (!Read(und))
+            return false;
+        
+        value = und;
+        return true;
+    }
+
     template <size_t N>
     bool Read(FixedStr<N>& str)
     {

src/net/msg_producer.cpp

@@ -0,0 +1,16 @@
+#include "msg_producer.hpp"
+
+#include <cstdint>
+
+void net::MsgProducer::ResetMsg()
+{
+    message_buf_.clear();
+}
+
+net::OutMessage net::MsgProducer::BeginMsg(net::MessageType type)
+{
+    OutMessage msg(message_buf_);
+    if (type != net::MSG_NONE)
+        msg.Write(type);
+    return msg;
+}

src/net/msg_producer.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <span>
+
+#include "defs.hpp"
+#include "outmessage.hpp"
+
+namespace net
+{
+
+class MsgProducer
+{
+public:
+    MsgProducer() = default;
+
+    void ResetMsg();
+    OutMessage BeginMsg(MessageType type = MSG_NONE);
+    std::span<const char> GetMsg() const { return message_buf_; };
+
+private:
+    std::vector<char> message_buf_;
+};
+
+}

src/net/outmessage.hpp

@@ -2,6 +2,7 @@
 
 #include <concepts>
 #include <vector>
+#include <span>
 
 #include "fixed_str.hpp"
 #include "quantized.hpp"
@@ -34,6 +35,12 @@ public:
         WriteAt(Reserve<T>(), value);
     }
 
+    template <typename T> requires (std::is_enum_v<T> && std::integral<std::underlying_type_t<T>>)
+    void Write(T value)
+    {
+        Write(static_cast<std::underlying_type_t<T>>(value));
+    }
+
     void Write(const char* str, size_t n)
     {
         size_t pos = buffer_.size();
@@ -41,6 +48,11 @@ public:
         memcpy(&buffer_[pos], str, n);
     }
 
+    void Write(std::span<const char> data)
+    {
+        Write(data.data(), data.size());
+    }
+
     template <size_t N>
     void Write(const FixedStr<N>& str)
     {

src/server/client.cpp

@@ -0,0 +1,62 @@
+#include "client.hpp"
+
+#include "server.hpp"
+#include "utils/validate.hpp"
+
+sv::Client::Client(Server& server, WSConnId id) : server_(server), id_(id) {}
+
+bool sv::Client::ProcessMessage(net::InMessage& msg)
+{
+    while (true)
+    {
+        net::MessageType type = net::MSG_NONE;
+        if (!msg.Read(type))
+            break;
+
+        if (type == net::MSG_NONE || type >= net::MSG_COUNT)
+            return false; 
+
+        ProcessSingleMessage(type, msg);
+    }
+}
+
+bool sv::Client::ProcessSingleMessage(net::MessageType type, net::InMessage& msg)
+{
+    if (state_ == CS_PLAYER)
+        return player_->ProcessMsg(type, msg);
+
+    if (state_ == CS_INIT)
+    {
+        // allow only login
+        if (type != net::MSG_ID)
+            return false;
+        
+        net::PlayerName name;
+        if (!msg.Read(name) || !utils::IsAlphanumeric(name))
+            return false;
+            
+        player_ = std::make_unique<game::Player>(server_.GetGame(), name);
+        state_ = CS_PLAYER;
+        return true;
+    }
+
+    return false;
+}
+
+void sv::Client::Update()
+{
+    if (player_)
+    {
+        player_->ResetMsg();
+        player_->Update();
+
+        auto msg = player_->GetMsg();
+        if (!msg.empty())
+            Send(std::string(msg.data(), msg.size()));
+    }
+}
+
+void sv::Client::Send(std::string msg)
+{
+    server_.Send(*this, std::move(msg));
+}

src/server/client.hpp

@@ -0,0 +1,48 @@
+#pragma once
+
+#include "wsserver.hpp"
+#include "net/inmessage.hpp"
+#include "game/player.hpp"
+
+namespace sv
+{
+
+class Server;
+
+enum ClientState
+{
+    CS_INIT,
+    CS_PLAYER,
+    CS_CLOSED,
+};
+
+class Client
+{
+public:
+    Client(Server& server, WSConnId id);
+
+    bool ProcessMessage(net::InMessage& msg);
+    bool ProcessSingleMessage(net::MessageType type, net::InMessage& msg);
+
+    void Update();
+
+    // void Disconnect(const std::string& reason);
+
+    WSConnId GetConnId() const { return id_; }
+    ClientState GetState() const { return state_; }
+
+    game::Player* GetPlayer() { return player_.get(); }
+    const game::Player* GetPlayer() const { return player_.get(); }
+
+private:
+    void Send(std::string msg);
+
+private:
+    Server& server_;
+    WSConnId id_ = 0;
+    ClientState state_ = CS_INIT;
+
+    std::unique_ptr<game::Player> player_;
+};
+
+}

src/server/main.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <stdexcept>
+
+#include "server.hpp"
+
+int main()
+{
+    try
+    {
+        sv::Server server(11200);
+        server.Run();
+    } catch (const std::exception& e)
+    {
+        std::cerr << "FATAL ERROR: " << e.what() << std::endl;
+        return 1;
+    } 
+
+    return 0;
+}

src/server/server.cpp

@@ -0,0 +1,77 @@
+#include "server.hpp"
+
+sv::Server::Server(uint16_t port) : ws_(port) {}
+
+void sv::Server::Run()
+{
+    bool exit = false;
+    while (!exit)
+    {
+        PollWSEvents();
+    }
+}
+
+void sv::Server::Send(Client& client, std::string msg)
+{
+    ws_.Send(client.GetConnId(), std::move(msg));
+}
+
+void sv::Server::PollWSEvents()
+{
+    WSEvent event;
+    while (ws_.PollEvent(event))
+    {
+        switch (event.type)
+        {
+        case WSE_CONNECTED:
+            HandleWSConnect(event.conn);
+            break;
+
+        case WSE_MESSAGE:
+            HandleWSMessage(event.conn, event.data);
+            break;
+
+        case WSE_DISCONNECTED:
+            HandleWSDisconnect(event.conn);
+            break;
+
+        case WSE_EXIT:
+            exit_ = true;
+            break;
+
+        default:
+            break;
+        }
+    }
+}
+
+void sv::Server::HandleWSConnect(WSConnId conn) 
+{
+    clients_[conn] = std::make_unique<Client>();
+}
+
+void sv::Server::HandleWSMessage(WSConnId conn, const std::string& data)
+{
+    net::InMessage msg(data.data(), data.size());
+    if (!clients_.at(conn)->ProcessMessage(msg))
+    {
+        // TODO: disconnect
+    }    
+}
+
+void sv::Server::HandleWSDisconnect(WSConnId conn)
+{
+    clients_.erase(conn);
+}
+
+void sv::Server::Update()
+{
+    // update game
+
+
+    // update players
+    for (const auto& [conn, client] : clients_)
+    {
+        client->Update();
+    }
+}

src/server/server.hpp

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <cstdint>
+#include <memory>
+#include <set>
+
+#include "wsserver.hpp"
+#include "client.hpp"
+
+#include "game/game.hpp"
+
+namespace sv
+{
+
+class Server
+{
+public:
+    Server(uint16_t port);
+
+    void Run();
+
+    void Send(Client& client, std::string msg);
+
+    game::Game& GetGame() { return game_; }
+
+private:
+    void PollWSEvents();
+    void HandleWSConnect(WSConnId conn);
+    void HandleWSMessage(WSConnId conn, const std::string& data);
+    void HandleWSDisconnect(WSConnId conn);
+
+    void Update();
+
+private:
+    WSServer ws_;
+    bool exit_ = false;
+
+    game::Game game_;
+    std::unordered_map<WSConnId, std::unique_ptr<Client>> clients_;
+
+    
+};
+
+}

src/server/wsserver.cpp

@@ -0,0 +1,107 @@
+#include "wsserver.hpp"
+
+#include <crow.h>
+
+#include "utils/allocnum.hpp"
+
+sv::WSServer::WSServer(uint16_t port)
+{
+    ws_thread_ = std::make_unique<std::thread>([=]() {
+        crow::SimpleApp app;
+        app_ptr_ = (void*)&app;
+
+        CROW_WEBSOCKET_ROUTE(app, "/ws")
+        .onopen([&](crow::websocket::connection& conn) {
+            CROW_LOG_INFO << "new websocket connection from " << conn.get_remote_ip();
+
+            std::lock_guard<std::mutex> lock(mtx_);
+            
+            WSConnId conn_id = utils::AllocNum(id2conn_, last_id_);
+
+            // register connection
+            id2conn_[conn_id] = &conn;
+            conn.userdata((void*)conn_id);
+            // push connection event
+            events_.emplace_back(WSE_CONNECTED, conn_id);
+        })
+        .onclose([&](crow::websocket::connection& conn, const std::string& reason, uint16_t) {
+            CROW_LOG_INFO << "websocket connection closed: " << reason;
+
+            std::lock_guard<std::mutex> lock(mtx_);
+
+            WSConnId conn_id = (WSConnId)conn.userdata();
+
+            // push disonnected event
+            events_.emplace_back(WSE_DISCONNECTED, conn_id);
+
+            id2conn_.erase(conn_id);
+        })
+        .onmessage([&](crow::websocket::connection& conn, const std::string& data, bool is_binary) {
+            if (!is_binary)
+                return; // only accept binary messages here
+
+            std::lock_guard<std::mutex> lock(mtx_);
+
+            WSConnId conn_id = (WSConnId)conn.userdata();
+            events_.emplace_back(WSE_MESSAGE, conn_id, data);
+
+        });
+
+        // CROW_ROUTE(app, "/")
+        // ([] {
+        //     crow::mustache::context x;
+        //     x["servername"] = "127.0.0.1";
+        //     auto page = crow::mustache::load("ws.html");
+        //     return page.render(x);
+        // });
+
+        app.port(port).run();
+        
+        // push exit event
+        std::lock_guard<std::mutex> lock(mtx_);
+        events_.emplace_back(WSE_EXIT);
+        
+        app_ptr_ = nullptr;
+
+    });
+}
+
+bool sv::WSServer::PollEvent(WSEvent &out_event)
+{
+    std::lock_guard<std::mutex> lock(mtx_);
+
+    if (events_.empty())
+        return false;
+
+    out_event = std::move(events_.front());
+    events_.pop_front();
+    return true;
+}
+
+void sv::WSServer::Send(WSConnId conn_id, std::string data)
+{
+    std::lock_guard<std::mutex> lock(mtx_);
+    
+    auto it = id2conn_.find(conn_id);
+    if (it == id2conn_.end())
+    {
+        std::cerr << "attempted to send message to unknown conn ID " << conn_id <<std::endl;
+        return;
+    }
+
+    (*it->second).send_binary(std::move(data));
+
+}
+
+void sv::WSServer::Exit()
+{
+    std::lock_guard<std::mutex> lock(mtx_);
+    if (app_ptr_)
+        ((crow::SimpleApp*)app_ptr_)->stop();
+}
+
+sv::WSServer::~WSServer()
+{
+    if (ws_thread_ && ws_thread_->joinable())
+        ws_thread_->join();
+}

src/server/wsserver.hpp

@@ -0,0 +1,69 @@
+#pragma once
+
+#include <cstdint>
+#include <vector>
+#include <deque>
+#include <mutex>
+#include <functional>
+#include <unordered_map>
+#include <unordered_set>
+
+namespace crow::websocket
+{
+    class connection;
+}
+
+namespace sv
+{
+
+enum WSEventType
+{
+    WSE_NONE,
+    WSE_EXIT,
+    WSE_CONNECTED,
+    WSE_MESSAGE,
+    WSE_DISCONNECTED,
+};
+
+using WSConnId = uint32_t;
+
+struct WSEvent
+{
+    WSEventType type = WSE_NONE;
+    WSConnId conn = 0;
+    std::string data;
+};
+
+// using WSEventHandler = std::function<void(const WSEvent&)>;
+
+class WSServer
+{
+public:
+    WSServer(uint16_t port);
+
+    WSServer(const WSServer& other) = delete;
+    WSServer(WSServer&& other) = delete;
+    WSServer& operator=(const WSServer& other) = delete;
+    WSServer& operator=(WSServer&& other) = delete;
+
+    bool PollEvent(WSEvent& out_event);
+    void Send(WSConnId conn_id, std::string data);
+    // void Close(WSConnId conn_id);
+
+    void Exit();
+
+    ~WSServer();
+
+private:
+    std::deque<WSEvent> events_;
+    std::mutex mtx_;
+
+    std::unique_ptr<std::thread> ws_thread_;
+    void* app_ptr_ = nullptr;
+
+    std::unordered_map<WSConnId, crow::websocket::connection*> id2conn_;
+    WSConnId last_id_ = 0;
+
+};
+
+}

src/utils/allocnum.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <concepts>
+
+namespace utils
+{
+
+template <std::unsigned_integral TNum, typename TMap>
+TNum AllocNum(const TMap& map, TNum& num)
+{
+    constexpr auto MAX_NUM = std::numeric_limits<TNum>().max();
+    if (ents_.size() >= MAX_NUM - 2) // 0 & MAX reserved
+        return 0;
+
+    // this is stupid but whatever
+    do
+    {
+        ++num;
+    } while (num == 0 || num == MAX_ENTNUM || ents_.find(num) != ents_.end());
+
+    return num;
+}
+
+}

src/utils/defs.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef SERVER
+#define SERVER_ONLY(...) __VA_ARGS__
+#else
+#define SERVER_ONLY(...)
+#endif // SERVER
+
+#ifdef CLIENT
+#define CLIENT_ONLY(...) __VA_ARGS__
+#else
+#define CLIENT_ONLY(...)
+#endif

src/utils/transform.hpp

@@ -3,6 +3,8 @@
 #include <glm/glm.hpp>
 #include <glm/gtc/quaternion.hpp>
 
+#include <btBulletCollisionCommon.h>
+
 struct Transform
 {
 	glm::vec3 position = glm::vec3(0.0f);
@@ -41,12 +43,27 @@ struct Transform
 		);
 	}
 
+    btTransform ToBtTransform() const 
+    {
+        btQuaternion bt_rotation(rotation.x, rotation.y, rotation.z, rotation.w);
+		btVector3 bt_position(position.x, position.y, position.z);
+		return btTransform(bt_rotation, bt_position);    
+    }
+
 	void SetAngles(const glm::vec3& angles_deg)
 	{
 		glm::vec3 angles_rad = glm::radians(angles_deg);
 		rotation = glm::quat(angles_rad);
 	}
 
+    void SetBtTransform(const btTransform& bt_trans)
+    {
+        btVector3 bt_position = bt_trans.getOrigin();
+        btQuaternion bt_rotation = bt_trans.getRotation();
+        position = glm::vec3(bt_position.x(), bt_position.y(), bt_position.z());
+        rotation = glm::quat(bt_rotation.w(), bt_rotation.x(), bt_rotation.y(), bt_rotation.z());
+    }
+
 	static Transform Lerp(const Transform& a, const Transform& b, float t)
 	{
 		Transform result;

src/utils/validate.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <cstddef>
+#include <string>
+#include "net/fixed_str.hpp"
+
+namespace utils
+{
+
+inline bool IsAlphanumeric(const char* str, size_t len)
+{
+    const char* end = str + len;
+    for (; str < end; ++str)
+    {
+        const char c = *str;
+        if (!((c >= 'a' && c <= 'z') || (c >= 'A' || c <= 'Z') || (c >= '0' && c <= '9') || c == '_'))
+            return false;
+    }
+
+    return true;
+}
+
+inline bool IsAlphanumeric(std::string_view str)
+{
+    return IsAlphanumeric(str.data(), str.length());
+}
+
+template <size_t N>
+inline bool IsAlphanumeric(const net::FixedStr<N>& str)
+{
+    return IsAlphanumeric(str.str, str.len);
+}
+
+}