feature: UI (#31)

* refactor(ui): replace Text with Label/Widget component system

Replace the old `Text` class with a new component-based UI system consisting of `Widget` and `Label` classes. Key changes:

- Remove `Text` class and its GPU upload logic; introduce `Label` as a `Widget` subclass with dirty-flag vertex update.
- Add `UIVertexData` struct to manage per-label vertex buffer/array and memory.
- Refactor `DebugCollector` to store labels in a `Widget` tree, removing hash-based lookup.
- Simplify `Font::vertices()` signature by removing position/scale parameters; scaling is now applied in the renderer’s model matrix.
- Update `Renderer` with `render_label()` and move UI rendering to a `render_ui()` that renders the widget tree.
- Add new source files `label.cpp`, `widget.cpp`, `ui_vertex_data.cpp` and update CMakeLists.

* refactor(render): replace UI shaders with image shaders and Image widget

* refactor(core): add event system and scene management

- Introduce Event variant and Overloaded helper for input handling
- Move game state (camera, client_world, dev_panel) from App to WorldScene
- Add SceneManager with push/pop/change operations for scene stack
- Refactor input callbacks to dispatch events through scene hierarchy
- Extract Argument struct to separate header
- Update Renderer and WorldRenderer to accept world reference
- Replace global input state with event-driven processing in ClientPlayer, Camera, etc.

* refactor: add framebuffer resize event and separate UI management

* fix(font): use correct texture format and clamp to edge for font atlas

* feat(input): add KeyAction::REPEAT for key repeat events

Add a new REPEAT value to the KeyAction enum and update the input callbacks to map GLFW_REPEAT actions to the new value instead of treating them as press.

* feat(client-player): add block cooldown and track mouse state

Introduce a time-based cooldown for block placement (PLACE_BLOCK_INTERVAL) to prevent rapid clicking. Replace the global InputState with per-player MouseState tracking in ClientPlayer. Rename place_block() to get_current_block() for clarity. Remove the old src/input.cpp and the Cubed/input.hpp header, moving input structures to Cubed/input/input.hpp.

* ui: add main menu scene and interactive button widget

- Implement MainMenuScene with a "Start Game" button that pushes the WorldScene.
- Extend Button class with background/foreground, hover detection, and size queries.
- Add virtual width/height and event handlers to Widget base class.
- Update WorldUIManager to propagate mouse move events.
- Adjust Window mouse mode based on game running state.

* feat(ui): add button scaling and change square vertices to top-left origin

* refactor(font): return TextMesh from Font::vertices to include bounding box

Replace the plain vertex vector with a TextMesh struct that carries width, height, and min coordinates. Update Label to compute and store these values immediately on text change (removing lazy dirty update). Fix Button's width/height to factor in scale and use concrete widget types for background and foreground.

* feat(ui): support scaling of labels and images

Modify width() and height() methods to multiply by m_scale for both Label and Image. Rename internal dimensions to m_real_width and m_real_height for clarity. Adjust Button foreground position to vertically center when label is scaled.

* refactor(ui): move scale property to subclasses and fix resize event handling

Remove scale from base Widget class and add per-type set_scale/scale methods to Button, Image, and Label. Dispatch separate WindowResizeEvent alongside existing FrameBufferResizeEvent. Correct centering calculations from `+` to `-` in main menu and world UI managers.

* fix(render): remove duplicate scaling in render_image model matrix

* feat(ui): introduce anchor-based widget positioning system

Replace set_position with anchor and offset for relative positioning. Add parent pointer to widget hierarchy. Remove manual resize logic in UI managers.

* feat(ui): introduce ColumnLayout widget and refactor widget parenting

- Add ColumnLayout widget that arranges children vertically with spacing.
- Refactor Widget::add_child to automatically pass `this` as parent.
- Update DebugCollector to use ColumnLayout for consistent spacing.
- Expose children() accessor in Widget for layout management.

* feat(main_menu): add exit button and refactor layout with ColumnLayout

- Add `should_close_window()` method to force window close from UI.
- Replace standalone button with ColumnLayout for proper centering.
- Add "Exit" button that calls `should_close_window()`.
- Update ESC key handling to only close window when game is not running.
- Fix ColumnLayout to respect parent's anchor instead of hardcoded TOP_LEFT.
- Remove unused parameter name in Image::update for consistency.

* feat(ui): add Rect widget with fill, color, and parent-relative sizing

* refactor(ui): extract common UI manager logic into base class

* refactor: move server logic to WorldScene and refactor UI methods

* feat(scene): implement pause menu with UI manager and escape key toggling

Add PauseMenuUIManager class and integrate pause state into WorldScene.
Escape key toggles pause in ClientPlayer and PauseMenuUIManager.
Refactor Window mouse and imgui control to support pause state.

* refactor(scene): dispatch events via typed handlers and move pause toggle to WorldScene

* feat(ui): add HUD visibility toggle and image fill features

* refactor(app): remove redundant ImGui WantCaptureMouse check in cursor callback

* feat(scene): add credits scene and UI

* feat(credits): add ESC key handling; remove about tab from dev panel

* feat(ui): add Slider widget for value selection

* refactor(ui/slider): improve track/thumb initialization and validation

Rename track/thumb accessors from set_track/set_thumb to get_track/get_thumb.
Add private init methods and a constant THUMB_WIDTH.
Add validation to set_width with log and assert.
Modify set_height to assume non-null m_thumb.

* refactor(ui): simplify Button API with property setters

* feat(ui): add label and image support to slider

- Add `set_text()`, `set_track_image()`, `set_thumb_image()` methods.
- Include label rendering and auto-scaling based on slider dimensions.
- Replace static `THUMB_WIDTH` with dynamic thumb sizing.
- Add slider thumb and track texture assets.

* feat(ui): add int slider support and fix update_text_scale calls

* refactor(config): rename hot_reload to reload_config and add settings scene

* feat(ui): add auto-scaling option for button and slider text

* feat(ui): add button enable/disable and reset on re-enter

Prevent double-clicking on buttons that push new scenes by disabling them on click and re-enabling when the UI manager's on_re_enter is called.

* fix(input): reset key status on pause

* feat(ui): add ComboButton widget and integrate into settings

Introduce ComboButton, a button that cycles through options on click.
Used in SettingsUI for fullscreen, V-Sync, and anisotropic filtering.
Adds texture reload support in SettingsScene and makes Button methods
virtual to allow overriding. Also fixes default mouse_enable to true.

* feat(ui): add child anchor and content sizing to column layout

* feat(ui): add TextField widget with UTF-8 text input support

* feat(scene): add host game scene and world parameter handling

* feat(scene): add join game scene and UI

* feat(ui): add clipboard paste to TextField

* feat(ui): add blinking cursor to text field

* feat(ui): add error UI for connection failures and network errors

Introduce ErrorUI to display error messages in-world when the client encounters connection failures or network errors. The network client now stores error strings thread-safely and exposes them via `get_error_string()`. The world scene suspends normal update/render when an error is active and shows the error overlay, allowing the user to return to the previous scene. Additionally, the client world checks for connection errors during exit to avoid hanging, and the join game UI is fixed to correctly default to client mode.

* refactor: move connect error check to WorldScene and add UI titles

* feat(ui): add error display in host and join game screens

* feat(ui): add configurable child traversal order for event handling

Add TraversalOrder enum to Widget, allowing event handlers to iterate children in back-to-front (default) or front-to-back order.
Set ColumnLayout to front-to-back order.
Change TextField mouse button handler to return false, enabling event propagation.

* fix: window build fail

* style(ui): remove extra blank line

src/scene/credits_scene.cpp

@@ -0,0 +1,28 @@
+#include "Cubed/scene/credits_scene.hpp"
+
+#include "Cubed/app.hpp"
+#include "Cubed/scene/scene_manager.hpp"
+
+namespace Cubed {
+CreditsScene::CreditsScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_ui(*this) {}
+
+void CreditsScene::update(float dt) { m_ui.update(dt); }
+void CreditsScene::render(Renderer& renderer) { m_ui.render(renderer); }
+bool CreditsScene::handle_event(const Event& e) {
+    if (m_ui.handle_event(e)) {
+        return true;
+    }
+    return false;
+}
+void CreditsScene::on_enter() { m_ui.init(); }
+void CreditsScene::on_re_enter() {
+    auto width = m_scene_manager.app().renderer().window_width();
+    auto height = m_scene_manager.app().renderer().window_height();
+
+    handle_event(
+        WindowResizeEvent{static_cast<int>(width), static_cast<int>(height)});
+};
+SceneManager& CreditsScene::scene_manager() { return m_scene_manager; }
+
+} // namespace Cubed

src/scene/host_game_scene.cpp

@@ -0,0 +1,18 @@
+#include "Cubed/scene/host_game_scene.hpp"
+
+namespace Cubed {
+HostGameScene::HostGameScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_ui(*this) {}
+HostGameScene::~HostGameScene() {}
+
+void HostGameScene::update(float dt) { m_ui.update(dt); }
+void HostGameScene::render(Renderer& renderer) { m_ui.render(renderer); }
+bool HostGameScene::handle_event(const Event& e) {
+    return m_ui.handle_event(e);
+}
+void HostGameScene::on_enter() { m_ui.init(); }
+void HostGameScene::on_leave() {}
+void HostGameScene::on_re_enter() { m_ui.on_re_enter(); }
+SceneManager& HostGameScene::scene_manager() { return m_scene_manager; }
+
+} // namespace Cubed

src/scene/join_game_scene.cpp

@@ -0,0 +1,16 @@
+#include "Cubed/scene/join_game_scene.hpp"
+
+namespace Cubed {
+JoinGameScene::JoinGameScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_ui(*this) {}
+
+void JoinGameScene::update(float dt) { m_ui.update(dt); }
+void JoinGameScene::render(Renderer& renderer) { m_ui.render(renderer); }
+bool JoinGameScene::handle_event(const Event& e) {
+    return m_ui.handle_event(e);
+}
+void JoinGameScene::on_enter() { m_ui.init(); }
+void JoinGameScene::on_leave() {}
+void JoinGameScene::on_re_enter() { m_ui.on_re_enter(); }
+SceneManager& JoinGameScene::scene_manager() { return m_scene_manager; }
+} // namespace Cubed

src/scene/main_menu_scene.cpp

@@ -0,0 +1,32 @@
+#include "Cubed/scene/main_menu_scene.hpp"
+
+#include "Cubed/app.hpp"
+#include "Cubed/scene/scene_manager.hpp"
+
+namespace Cubed {
+MainMenuScene::MainMenuScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_ui_manager(*this) {}
+MainMenuScene::~MainMenuScene() {}
+
+void MainMenuScene::update(float dt) { m_ui_manager.update(dt); }
+void MainMenuScene::render(Renderer& renderer) {
+    m_ui_manager.render(renderer);
+}
+bool MainMenuScene::handle_event(const Event& e) {
+    if (m_ui_manager.handle_event(e)) {
+        return true;
+    }
+    return false;
+}
+void MainMenuScene::on_enter() { m_ui_manager.init(); }
+void MainMenuScene::on_leave() {}
+void MainMenuScene::on_re_enter() {
+    m_ui_manager.on_re_enter();
+    auto width = m_scene_manager.app().renderer().window_width();
+    auto height = m_scene_manager.app().renderer().window_height();
+
+    handle_event(
+        WindowResizeEvent{static_cast<int>(width), static_cast<int>(height)});
+}
+SceneManager& MainMenuScene::scene_manager() { return m_scene_manager; }
+} // namespace Cubed

src/scene/scene_manager.cpp

@@ -0,0 +1,115 @@
+#include "Cubed/scene/scene_manager.hpp"
+
+#include "Cubed/scene/credits_scene.hpp"
+#include "Cubed/scene/host_game_scene.hpp"
+#include "Cubed/scene/join_game_scene.hpp"
+#include "Cubed/scene/main_menu_scene.hpp"
+#include "Cubed/scene/settings_scene.hpp"
+#include "Cubed/scene/world_scene.hpp"
+
+namespace Cubed {
+SceneManager::SceneManager(App& app) : m_app(app) {}
+SceneManager::~SceneManager() {}
+
+void SceneManager::update(float dt) {
+    m_pending_delete_scene.clear();
+    process_operation();
+    if (!m_scenes.empty()) {
+        m_scenes.top()->update(dt);
+    }
+}
+void SceneManager::render(Renderer& renderer) {
+    if (m_scenes.empty()) {
+        return;
+    }
+    m_scenes.top()->render(renderer);
+}
+
+bool SceneManager::handle_event(const Event& e) {
+    if (m_scenes.empty()) {
+        return false;
+    }
+    return m_scenes.top()->handle_event(e);
+}
+
+void SceneManager::request_change(SceneType type) {
+    ASSERT(!m_operation.has_value());
+    m_operation = {OperationType::CHANGE, type};
+}
+void SceneManager::request_push(SceneType type) {
+    ASSERT(!m_operation.has_value());
+    m_operation = {OperationType::PUSH, type};
+}
+void SceneManager::request_pop() {
+    ASSERT(!m_operation.has_value());
+    m_operation = {OperationType::POP, std::nullopt};
+}
+
+void SceneManager::process_operation() {
+    while (m_operation) {
+        auto op = std::move(*m_operation);
+        m_operation.reset();
+
+        switch (op.type) {
+        case OperationType::PUSH:
+            push(*op.scene);
+            break;
+        case OperationType::POP:
+            pop();
+            break;
+        case OperationType::CHANGE:
+            change(*op.scene);
+            break;
+        }
+    }
+}
+
+void SceneManager::change(SceneType type) {
+    if (!m_scenes.empty()) {
+        pop(false);
+    }
+
+    push(type);
+}
+void SceneManager::push(SceneType type) {
+    auto scene = create_scene(type);
+    scene->on_enter();
+    m_scenes.push(std::move(scene));
+}
+void SceneManager::pop(bool re_enter) {
+    if (m_scenes.empty()) {
+        return;
+    }
+    auto scene = std::move(m_scenes.top());
+    m_scenes.pop();
+    scene->on_leave();
+    m_pending_delete_scene.push_back(std::move(scene));
+    if (!m_scenes.empty() && re_enter) {
+        m_scenes.top()->on_re_enter();
+    }
+}
+
+std::unique_ptr<Scene> SceneManager::create_scene(SceneType type) {
+    switch (type) {
+    case SceneType::WORLD:
+        return std::make_unique<WorldScene>(*this);
+    case SceneType::MAIN_MENU:
+        return std::make_unique<MainMenuScene>(*this);
+    case SceneType::CREDITS:
+        return std::make_unique<CreditsScene>(*this);
+    case SceneType::SETTINGS:
+        return std::make_unique<SettingsScene>(*this);
+    case SceneType::HOST_GAME:
+        return std::make_unique<HostGameScene>(*this);
+    case SceneType::JOIN_GAME:
+        return std::make_unique<JoinGameScene>(*this);
+    }
+
+    std::string err = std::format("Unknown Scene");
+    ASSERT_MSG(false, err);
+    throw std::runtime_error(err);
+}
+
+App& SceneManager::app() { return m_app; }
+WorldSceneParam& SceneManager::world_scene_param() { return m_world_param; }
+} // namespace Cubed

src/scene/settings_scene.cpp

@@ -0,0 +1,68 @@
+#include "Cubed/scene/settings_scene.hpp"
+
+#include "Cubed/app.hpp"
+#include "Cubed/config.hpp"
+#include "Cubed/scene/scene_manager.hpp"
+namespace Cubed {
+SettingsScene::SettingsScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_settings_ui(*this) {}
+SettingsScene::~SettingsScene() {}
+
+void SettingsScene::update(float dt) { m_settings_ui.update(dt); }
+void SettingsScene::render(Renderer& renderer) {
+    m_settings_ui.render(renderer);
+}
+bool SettingsScene::handle_event(const Event& e) {
+    if (m_settings_ui.handle_event(e)) {
+        return true;
+    }
+    return false;
+}
+void SettingsScene::on_enter() {
+    m_settings_ui.init();
+    auto& config = m_scene_manager.app().config();
+    m_slider_variable.fov = config.get("player.fov", m_slider_variable.fov);
+    m_slider_variable.mouse_sensitivity = config.get(
+        "player.mouse_sensitivity", m_slider_variable.mouse_sensitivity);
+    m_slider_variable.music =
+        config.get("volume.music", m_slider_variable.music);
+    m_slider_variable.sfx = config.get("volume.SFX", m_slider_variable.sfx);
+    m_slider_variable.rendering_distance = config.get(
+        "world.rendering_distance", m_slider_variable.rendering_distance);
+}
+void SettingsScene::on_leave() {
+    save_and_apply();
+
+    if (m_need_texture_reload) {
+        m_scene_manager.app().texture_manager().need_reload();
+    }
+}
+
+void SettingsScene::on_re_enter() {
+    auto width = m_scene_manager.app().renderer().window_width();
+    auto height = m_scene_manager.app().renderer().window_height();
+
+    handle_event(
+        WindowResizeEvent{static_cast<int>(width), static_cast<int>(height)});
+}
+
+void SettingsScene::save_and_apply() {
+    auto& config = m_scene_manager.app().config();
+    config.set("player.fov", m_slider_variable.fov);
+    config.set("player.mouse_sensitivity", m_slider_variable.mouse_sensitivity);
+    config.set("world.rendering_distance",
+               m_slider_variable.rendering_distance);
+    config.set("volume.SFX", m_slider_variable.sfx);
+    config.set("volume.music", m_slider_variable.music);
+    config.save_to_file();
+    auto& app = m_scene_manager.app();
+    app.audio().reload_config();
+    app.renderer().reload_config();
+}
+
+SceneManager& SettingsScene::scene_manager() { return m_scene_manager; }
+SliderVariable& SettingsScene::slider_variable() { return m_slider_variable; }
+void SettingsScene::set_texture_reload(bool reload) {
+    m_need_texture_reload = reload;
+}
+} // namespace Cubed

src/scene/world_scene.cpp

@@ -0,0 +1,294 @@
+#include "Cubed/scene/world_scene.hpp"
+
+#include "Cubed/app.hpp"
+#include "Cubed/render/renderer.hpp"
+#include "Cubed/scene/scene_manager.hpp"
+namespace Cubed {
+WorldScene::WorldScene(SceneManager& scene_manager)
+    : m_scene_manager(scene_manager), m_dev_panel(*this),
+      m_client_world(scene_manager.app().audio(), scene_manager.app().config(),
+                     *this),
+      m_pasue_menu(*this), m_hud_ui(*this), m_error_ui(*this),
+      m_argument(scene_manager.app().argument()) {}
+
+WorldScene::~WorldScene() {
+    if (m_client) {
+        m_client->stop();
+    }
+}
+
+void WorldScene::update(float dt) {
+    if (m_client->is_connect_error()) {
+        set_error(m_client->get_error_string());
+    }
+    if (m_error_ui.has_error()) {
+        m_error_ui.update(dt);
+        return;
+    }
+    m_client_world.update(dt);
+    m_camera.update_move_camera();
+    m_client_world.get_audio().update_listener(m_camera.get_camera_pos(),
+                                               m_camera.get_camera_front(),
+                                               glm::vec3(0, 1, 0));
+
+    /*
+    const auto& player = m_client_world.get_player();
+    if (player_gait != player.get_gait()) {
+        player_gait = player.get_gait();
+        float fov = m_client_world.get("player.fov", 70.0f);
+        if (player_gait == Gait::WALK) {
+            m_renderer.update_fov(fov);
+        }
+        if (player_gait == Gait::RUN) {
+            m_renderer.update_fov(fov + 5.0f);
+        }
+    }*/
+    if (m_paused) {
+        m_pasue_menu.update(dt);
+    } else {
+
+        m_hud_ui.update(dt);
+    }
+}
+
+void WorldScene::render(Renderer& renderer) {
+    if (m_error_ui.has_error()) {
+        m_error_ui.render(renderer);
+        return;
+    }
+    renderer.render_world(m_client_world);
+    if (m_show_hud) {
+        m_hud_ui.render(renderer);
+    }
+    if (m_paused) {
+        m_pasue_menu.render(renderer);
+    } else {
+        if (m_show_dev_pannel && m_show_hud) {
+            renderer.render_dev_panel(m_dev_panel);
+        }
+    }
+}
+bool WorldScene::handle_event(const Event& e) {
+    if (m_error_ui.has_error()) {
+        return m_error_ui.handle_event(e);
+    }
+    return std::visit(
+        Overloaded{[this](const MouseMoveEvent& e) {
+                       if (handle_mouse_move_event(e)) {
+                           return true;
+                       }
+                       return false;
+                   },
+                   [this](const MouseButtonEvent& e) {
+                       if (handle_mouse_button_event(e)) {
+                           return true;
+                       }
+                       return false;
+                   },
+                   [this](const MouseWheelEvent& e) {
+                       if (handle_mouse_wheel_event(e)) {
+                           return true;
+                       }
+                       return false;
+                   },
+                   [this](const KeyEvent& e) {
+                       if (handle_key_event(e)) {
+                           return true;
+                       }
+                       return false;
+                   },
+                   [](const TextInputEvent&) { return false; },
+                   [this](const WindowResizeEvent& e) {
+                       handle_window_resize_event(e);
+                       return false;
+                   },
+                   [](const FrameBufferResizeEvent&) { return false; }
+
+        },
+        e);
+}
+void WorldScene::on_enter() {
+    auto& param = m_scene_manager.world_scene_param();
+    m_error_ui.init();
+    if (param.host_game) {
+        if (param.seed) {
+            ChunkGenerator::init(*param.seed);
+            param.seed = std::nullopt;
+        } else {
+            ChunkGenerator::init();
+        }
+        m_server.start_server(param.port);
+    }
+    m_client = std::make_shared<NetworkClient>(m_client_world);
+
+    m_client->start(param.ip, param.port);
+    // init will send packet
+    try {
+        m_client_world.init(m_argument.player, m_client);
+
+        Logger::info("World Init Success");
+        m_camera.camera_init(&m_client_world.get_player());
+        m_scene_manager.app().window().set_camera(&m_camera);
+        m_dev_panel.init();
+        m_pasue_menu.init();
+        m_hud_ui.init();
+
+        m_scene_manager.app().window().set_game_running(true);
+    } catch (const std::exception& e) {
+        m_error_ui.set_error(e.what());
+    }
+}
+void WorldScene::on_leave() {
+    m_client_world.request_exit();
+
+    m_scene_manager.app().window().set_camera(nullptr);
+    m_scene_manager.app().window().set_game_running(false);
+
+    if (!m_argument.is_client) {
+        m_server.server_world().stop();
+    }
+    m_scene_manager.app().audio().stop_bgm();
+}
+
+void WorldScene::on_re_enter() {
+    m_error_ui.on_re_enter();
+    m_pasue_menu.on_re_enter();
+    m_client_world.reload_config();
+    auto width = m_scene_manager.app().renderer().window_width();
+    auto height = m_scene_manager.app().renderer().window_height();
+
+    handle_event(
+        WindowResizeEvent{static_cast<int>(width), static_cast<int>(height)});
+}
+
+bool WorldScene::handle_mouse_move_event(const MouseMoveEvent& e) {
+    if (m_paused) {
+        if (m_pasue_menu.handle_event(e)) {
+            return true;
+        }
+    } else {
+        if (m_hud_ui.handle_event(e)) {
+            return true;
+        }
+        if (m_camera.handle_event(e)) {
+            return true;
+        }
+        // world event needs to be processed last
+        if (m_client_world.handle_event(e)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+bool WorldScene::handle_mouse_button_event(const MouseButtonEvent& e) {
+    if (m_paused) {
+        if (m_pasue_menu.handle_event(e)) {
+            return true;
+        }
+    } else {
+        if (m_hud_ui.handle_event(e)) {
+            return true;
+        }
+        if (m_camera.handle_event(e)) {
+            return true;
+        }
+        // world event needs to be processed last
+        if (m_client_world.handle_event(e)) {
+            return true;
+        }
+    }
+    return false;
+}
+bool WorldScene::handle_window_resize_event(const WindowResizeEvent& e) {
+
+    if (m_pasue_menu.handle_event(e)) {
+        return true;
+    }
+    if (m_hud_ui.handle_event(e)) {
+        return true;
+    }
+    if (m_camera.handle_event(e)) {
+        return true;
+    }
+    // world event needs to be processed last
+    if (m_client_world.handle_event(e)) {
+        return true;
+    }
+
+    return false;
+}
+bool WorldScene::handle_mouse_wheel_event(const MouseWheelEvent& e) {
+    if (m_paused) {
+        if (m_pasue_menu.handle_event(e)) {
+            return true;
+        }
+    } else {
+        if (m_hud_ui.handle_event(e)) {
+            return true;
+        }
+        if (m_camera.handle_event(e)) {
+            return true;
+        }
+        // world event needs to be processed last
+        if (m_client_world.handle_event(e)) {
+            return true;
+        }
+    }
+    return false;
+}
+bool WorldScene::handle_key_event(const KeyEvent& e) {
+
+    if (e.key == Key::ESCAPE && e.action == KeyAction::PRESS) {
+        bool pasued = pause();
+        pasued = !pasued;
+        set_pause(pasued);
+        return true;
+    }
+    if (e.key == Key::F1 && e.action == KeyAction::PRESS) {
+        m_show_hud = !m_show_hud;
+        return true;
+    }
+    if (e.key == Key::F12 && e.action == KeyAction::PRESS) {
+        m_show_dev_pannel = !m_show_dev_pannel;
+        return true;
+    }
+    if (m_paused) {
+        if (m_pasue_menu.handle_event(e)) {
+            return true;
+        }
+    } else {
+        if (m_hud_ui.handle_event(e)) {
+            return true;
+        }
+        if (m_camera.handle_event(e)) {
+            return true;
+        }
+        // world event needs to be processed last
+        if (m_client_world.handle_event(e)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+Camera& WorldScene::camera() { return m_camera; }
+SceneManager& WorldScene::scene_manager() { return m_scene_manager; }
+ClientWorld& WorldScene::client_world() { return m_client_world; }
+ServerWorld& WorldScene::server_world() { return m_server.server_world(); }
+bool WorldScene::pause() const { return m_paused; }
+void WorldScene::set_pause(bool pause) {
+    m_paused = pause;
+    auto& window = m_scene_manager.app().window();
+    window.set_game_running(!m_paused);
+    if (m_paused) {
+        m_client_world.reset_key_status();
+    }
+}
+
+void WorldScene::set_error(std::string_view error) {
+    m_error_ui.set_error(error);
+    set_pause(true);
+}
+
+} // namespace Cubed