136 changed files with 131 additions and 4777 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -10,50 +10,49 @@ endif()

 option(USE_FRAMEBUFFER "Use Linux framebuffer instead of SDL2" OFF)

-set(CORE_SOURCES
-    src/Core/Asset/ObjLoader.cpp
-    src/Core/Asset/SpriteAssetLoader.cpp
-    src/Core/Core/DepthBuffer.cpp
-    src/Core/Core/FrameBuffer.cpp
-    src/Core/Core/Renderer.cpp
-    src/Core/Draw2D/DrawContext.cpp
-    src/Core/Rasterizer/Rasterizer.cpp
-    src/Core/Rasterizer/TriangleRasterizer.cpp
-    src/Core/Scene/Camera.cpp
-    src/Core/Shading/BlinnPhongShader.cpp
+set(SOURCES
+        src/Apps/Demo/main.cpp
+        src/Gfx/Asset/ObjLoader.cpp
+        src/Gfx/Core/DepthBuffer.cpp
+        src/Gfx/Core/FrameBuffer.cpp
+        src/Gfx/Core/Renderer.cpp
+        src/Gfx/Draw2D/DrawContext.cpp
+        src/Gfx/Rasterizer/Rasterizer.cpp
+        src/Gfx/Rasterizer/TriangleRasterizer.cpp
+        src/Gfx/Scene/Camera.cpp
+        src/Gfx/Shading/BlinnPhongShader.cpp
 )

-set(CORE_INCLUDE_DIRS
-    src/Core/Platform
-    src/Core/Asset
-    src/Core/Core
-    src/Core/Draw2D
-    src/Core/Math
-    src/Core/Rasterizer
-    src/Core/RenderData
-    src/Core/Scene
-    src/Core/Shading
+if(USE_FRAMEBUFFER)
+    list(APPEND SOURCES src/Gfx/Platform/FBDisplay.cpp)
+else()
+    list(APPEND SOURCES src/Gfx/Platform/SDLDisplay.cpp)
+endif()
+
+add_executable(IMX6U-Game ${SOURCES})
+
+target_include_directories(IMX6U-Game PRIVATE
+        src/Gfx/Platform
+        src/Gfx/Asset
+        src/Gfx/Core
+        src/Gfx/Draw2D
+        src/Gfx/Math
+        src/Gfx/Rasterizer
+        src/Gfx/RenderData
+        src/Gfx/Scene
+        src/Gfx/Shading
        assets/font
        assets/sprite
 )

-set(SOURCES
-    src/Apps/Game/Main.cpp
-    ${CORE_SOURCES}
-)
-
-if(USE_FRAMEBUFFER)
-    list(APPEND SOURCES src/Core/Platform/FBDisplay.cpp)
-else()
-    list(APPEND SOURCES src/Core/Platform/SDLDisplay.cpp)
-endif()
-
-add_executable(IMX6U-Game ${SOURCES})
-target_include_directories(IMX6U-Game PRIVATE ${CORE_INCLUDE_DIRS})
-
 if(USE_FRAMEBUFFER)
    target_compile_definitions(IMX6U-Game PRIVATE USE_FRAMEBUFFER)
 else()
+    target_include_directories(IMX6U-Game PRIVATE
+        libs/Win/SDL2/include
+        libs/Win/SDL_image/include
+    )
+
    if(WIN32)
        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
            set(SDL2_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL2/lib/x64")
@ -67,18 +66,21 @@ else()
            set(SDL2_IMAGE_DLL "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL_image/lib/x86/SDL2_image.dll")
        endif()

-        target_include_directories(IMX6U-Game PRIVATE libs/Win/SDL2/include)
-        target_link_directories(IMX6U-Game PRIVATE ${SDL2_LIB_DIR})
-        target_link_libraries(IMX6U-Game PRIVATE SDL2main SDL2)
+        target_link_directories(IMX6U-Game PRIVATE ${SDL2_LIB_DIR} ${SDL2_IMAGE_LIB_DIR})
+        target_link_libraries(IMX6U-Game PRIVATE SDL2main SDL2 SDL2_image)

        add_custom_command(TARGET IMX6U-Game POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_if_different
            "${SDL2_DLL}"
            "$<TARGET_FILE_DIR:IMX6U-Game>"
        )
+        add_custom_command(TARGET IMX6U-Game POST_BUILD
+            COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${SDL2_IMAGE_DLL}"
+            "$<TARGET_FILE_DIR:IMX6U-Game>"
+        )
    else()
        find_package(SDL2 REQUIRED)
-        find_package(SDL2_image QUIET)
        target_link_libraries(IMX6U-Game PRIVATE SDL2::SDL2)
    endif()
 endif()
@ -87,56 +89,3 @@ if(MSVC)
    target_compile_options(IMX6U-Game PRIVATE /utf-8 /W3)
    set_property(TARGET IMX6U-Game PROPERTY INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE)
 endif()
-
-if(NOT USE_FRAMEBUFFER)
-    set(SPRITE_ASSET_TOOL_SOURCES
-        src/Apps/Game/tools/asset_pipeline/SpriteAssetTool.cpp
-        src/Core/Asset/SpriteAssetLoader.cpp
-    )
-
-    if(WIN32)
-        add_executable(SpriteAssetTool ${SPRITE_ASSET_TOOL_SOURCES})
-        target_include_directories(SpriteAssetTool PRIVATE
-            src/Core/Asset
-            src/Core/RenderData
-            libs/Win/SDL2/include
-            libs/Win/SDL_image/include
-        )
-        target_link_directories(SpriteAssetTool PRIVATE ${SDL2_LIB_DIR} ${SDL2_IMAGE_LIB_DIR})
-        target_link_libraries(SpriteAssetTool PRIVATE SDL2main SDL2 SDL2_image)
-
-        add_custom_command(TARGET SpriteAssetTool POST_BUILD
-            COMMAND ${CMAKE_COMMAND} -E copy_if_different
-            "${SDL2_DLL}"
-            "$<TARGET_FILE_DIR:SpriteAssetTool>"
-        )
-        add_custom_command(TARGET SpriteAssetTool POST_BUILD
-            COMMAND ${CMAKE_COMMAND} -E copy_if_different
-            "${SDL2_IMAGE_DLL}"
-            "$<TARGET_FILE_DIR:SpriteAssetTool>"
-        )
-    elseif(SDL2_image_FOUND)
-        add_executable(SpriteAssetTool ${SPRITE_ASSET_TOOL_SOURCES})
-        target_include_directories(SpriteAssetTool PRIVATE
-            src/Core/Asset
-            src/Core/RenderData
-        )
-        target_link_libraries(SpriteAssetTool PRIVATE SDL2::SDL2 SDL2_image::SDL2_image)
-    else()
-        message(STATUS "SpriteAssetTool disabled: SDL2_image was not found")
-    endif()
-
-    if(TARGET SpriteAssetTool)
-        add_custom_target(ConvertTomSprites
-            COMMAND $<TARGET_FILE:SpriteAssetTool>
-                --batch
-                "src/Apps/Game/assets/raw"
-                "src/Apps/Game/assets/sprites"
-                --preset tom-800x480
-            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-            DEPENDS SpriteAssetTool
-            COMMENT "Converting PNG assets to board-ready .sprite files"
-            VERBATIM
-        )
-    endif()
-endif()
--- a/README.md
+++ b/README.md
@ -33,13 +33,13 @@ IMX6U 运行时性能预算较紧，后续开发必须遵守 `docs/DEVELOPMENT_G

 ## 应用层与图形库拆分

-项目后续按“两个游戏 + 一个启动器 + 一套底层图形库”组织，详细边界见 `docs/APP_AND_CORE_ARCHITECTURE.md`：
+项目后续按“两个游戏 + 一个启动器 + 一套底层图形库”组织，详细边界见 `docs/APP_AND_GFX_ARCHITECTURE.md`：

- `Core` / 底层图形库：只提供 framebuffer、SDL2/fb0 平台适配、独立时间源、基础绘制能力，例如点、线、矩形、四边形、sprite、bitmap font、tilemap。
+- `Gfx` / 底层图形库：只提供 framebuffer、SDL2/fb0 平台适配、独立时间源、基础绘制能力，例如点、线、矩形、四边形、sprite、bitmap font、tilemap。
 - `Apps/Launcher`：负责游戏选择、全局设置和启动流程。
 - `Apps/GameA`、`Apps/GameB`：分别维护自己的游戏规则、状态、资源和渲染调用。
 - `Shared`：只放应用层共享但不属于底层图形库的 UI、存档、配置、资源索引等。
- 依赖方向必须保持 `Apps -> Shared -> Core -> Platform`，底层图形库不能反向依赖具体游戏。
+- 依赖方向必须保持 `Apps -> Shared -> Gfx -> Platform`，底层图形库不能反向依赖具体游戏。

 初期推荐单进程多应用模式：Launcher、GameA、GameB 共用同一个 SDL2 初始化、framebuffer 和主循环，通过统一 `IApp` 接口切换当前应用。

@ -196,7 +196,7 @@ assets/font/font_atlas.h

 ## 显示后端架构

-显示层通过抽象接口 `Platform::IDisplay` 与渲染逻辑解耦。后续应用层和图形库拆分后，`Platform` 会收敛到 `Core` 的平台适配层：
+显示层通过抽象接口 `Platform::IDisplay` 与渲染逻辑解耦。后续应用层和图形库拆分后，`Platform` 会收敛到 `Gfx` 的平台适配层：

 ```
 ┌──────────────────────────────────────────────┐
@ -204,7 +204,7 @@ assets/font/font_atlas.h
 ├──────────────────────────────────────────────┤
 │ Shared：UI、存档、配置、资源索引              │
 ├──────────────────────────────────────────────┤
-│ Core：DrawContext、FrameBuffer、Draw2D、Math   │
+│ Gfx：DrawContext、FrameBuffer、Draw2D、Math   │
 ├──────────────────────────────────────────────┤
 │ Platform::IDisplay                           │
 │  - SDLDisplay : SDL2 显示/输入适配            │
@ -232,7 +232,7 @@ IMX6U-Game/
 │  ├─ gen_font_atlas.py                    # TTF -> bitmap font atlas/header
 │  └─ png_to_header.py                     # PNG -> uint32_t RGBA header
 ├─ src/
-│  ├─ Core/                                 # 底层图形库：可复用、无具体游戏规则
+│  ├─ Gfx/                                 # 底层图形库：可复用、无具体游戏规则
 │  │  ├─ Draw2D/                           # DrawContext 统一绘制入口
 │  │  ├─ Core/                             # FrameBuffer、DepthBuffer
 │  │  ├─ Math/                             # 向量、矩阵、数学工具
@ -247,7 +247,7 @@ IMX6U-Game/
 │  └─ test_fb.cpp                          # 独立 fb 测试（最小示例）
 ├─ docs/
 │  ├─ DEVELOPMENT_GUIDELINES.md            # IMX6U 性能红线
-│  ├─ APP_AND_CORE_ARCHITECTURE.md          # 应用层与图形库分层
+│  ├─ APP_AND_GFX_ARCHITECTURE.md          # 应用层与图形库分层
 │  └─ CONVENTIONS.md                       # 坐标系、矩阵、深度等数学约定
 ├─ CMakeLists.txt
 └─ README.md
@ -301,8 +301,10 @@ IMX6U-Game/
 - 双平台显示后端（SDL2 / Framebuffer）
 - 离线资源转换工具：PNG sprite -> C++ 头文件，像素字体 -> bitmap atlas/header
 - 基础 2D sprite、SpriteRegion、bitmap font 文本绘制和 tilemap 视口绘制，当前 demo 显示 FPS 文本、测试 sprite 和小型滚动 tilemap
+- 当前板端性能 demo 已临时移除旋转正方体，只保留 2D sprite/tilemap/FPS 与 `Frame/Present` 耗时显示，用于测量 framebuffer 提交瓶颈
 - Gfx 目录规范化，代码收敛到 `src/Gfx/`
 - `Gfx::DrawContext` 统一绘制入口，封装现有绘制能力
+- `DrawContext::clear_color()` 支持只清颜色缓冲，避免 2D-only demo 每帧无意义清 depth buffer
 - C++11 兼容代码
 - CMake 跨平台构建

@ -310,7 +312,7 @@ IMX6U-Game/
 1. FrameBuffer / FBDisplay 性能优化（目标像素格式 backbuffer、dirty rect、专用 tile/sprite 快路径、NEON）
 2. 应用层拆分（Launcher / GameA / GameB / Shared）和统一 `IApp` 主循环
 3. SDL2 输入抽象（键盘/触摸/按键状态快照）
-4. Core 基础 2D 绘制接口（矩形、四边形、继续完善 Sprite/Text/Tilemap 的批处理和专用快路径）
+4. Gfx 基础 2D 绘制接口（矩形、四边形、继续完善 Sprite/Text/Tilemap 的批处理和专用快路径）
 5. 纹理贴图、OBJ 模型加载与完整光照

 ## 说明
--- a/build-check/CMakeCache.txt.tmp58dbc
+++ b/build-check/CMakeCache.txt.tmp58dbc
@ -1,89 +0,0 @@
-# This is the CMakeCache file.
-# For build in directory: e:/嵌入式实验/实训/IMX6U-Game/build-check
-# It was generated by CMake: C:/Program Files/CMake/bin/cmake.exe
-# You can edit this file to change values found and used by cmake.
-# If you do not want to change any of the values, simply exit the editor.
-# If you do want to change a value, simply edit, save, and exit the editor.
-# The syntax for the file is as follows:
-# KEY:TYPE=VALUE
-# KEY is the name of a variable in the cache.
-# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!.
-# VALUE is the current value for the KEY.
-
-########################
-# EXTERNAL cache entries
-########################
-
-//Semicolon separated list of supported configuration types, only
-// supports Debug, Release, MinSizeRel, and RelWithDebInfo, anything
-// else will be ignored.
-CMAKE_CONFIGURATION_TYPES:STRING=Debug;Release;MinSizeRel;RelWithDebInfo
-
-//Value Computed by CMake.
-CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=E:/嵌入式实验/实训/IMX6U-Game/build-check/CMakeFiles/pkgRedirects
-
-//Value Computed by CMake
-CMAKE_PROJECT_COMPAT_VERSION:STATIC=
-
-//Value Computed by CMake
-CMAKE_PROJECT_DESCRIPTION:STATIC=
-
-//Value Computed by CMake
-CMAKE_PROJECT_HOMEPAGE_URL:STATIC=
-
-//Value Computed by CMake
-CMAKE_PROJECT_NAME:STATIC=IMX6U-Game
-
-//Value Computed by CMake
-CMAKE_PROJECT_SPDX_LICENSE:STATIC=
-
-//Value Computed by CMake
-IMX6U-Game_BINARY_DIR:STATIC=E:/嵌入式实验/实训/IMX6U-Game/build-check
-
-//Value Computed by CMake
-IMX6U-Game_IS_TOP_LEVEL:STATIC=ON
-
-//Value Computed by CMake
-IMX6U-Game_SOURCE_DIR:STATIC=E:/嵌入式实验/实训/IMX6U-Game
-
-
-########################
-# INTERNAL cache entries
-########################
-
-//This is the directory where this CMakeCache.txt was created
-CMAKE_CACHEFILE_DIR:INTERNAL=e:/嵌入式实验/实训/IMX6U-Game/build-check
-//Major version of cmake used to create the current loaded cache
-CMAKE_CACHE_MAJOR_VERSION:INTERNAL=4
-//Minor version of cmake used to create the current loaded cache
-CMAKE_CACHE_MINOR_VERSION:INTERNAL=3
-//Patch version of cmake used to create the current loaded cache
-CMAKE_CACHE_PATCH_VERSION:INTERNAL=3
-//Path to CMake executable.
-CMAKE_COMMAND:INTERNAL=C:/Program Files/CMake/bin/cmake.exe
-//Path to cpack program executable.
-CMAKE_CPACK_COMMAND:INTERNAL=C:/Program Files/CMake/bin/cpack.exe
-//Path to ctest program executable.
-CMAKE_CTEST_COMMAND:INTERNAL=C:/Program Files/CMake/bin/ctest.exe
-//Name of external makefile project generator.
-CMAKE_EXTRA_GENERATOR:INTERNAL=
-//Name of generator.
-CMAKE_GENERATOR:INTERNAL=Visual Studio 17 2022
-//Generator instance identifier.
-CMAKE_GENERATOR_INSTANCE:INTERNAL=C:/Program Files/Microsoft Visual Studio/2022/Community
-//Name of generator platform.
-CMAKE_GENERATOR_PLATFORM:INTERNAL=
-//Name of generator toolset.
-CMAKE_GENERATOR_TOOLSET:INTERNAL=
-//Source directory with the top level CMakeLists.txt file for this
-// project
-CMAKE_HOME_DIRECTORY:INTERNAL=E:/嵌入式实验/实训/IMX6U-Game
-//Name of CMakeLists files to read
-CMAKE_LIST_FILE_NAME:INTERNAL=CMakeLists.txt
-//number of local generators
-CMAKE_NUMBER_OF_MAKEFILES:INTERNAL=1
-//Platform information initialized
-CMAKE_PLATFORM_INFO_INITIALIZED:INTERNAL=1
-//Path to CMake installation.
-CMAKE_ROOT:INTERNAL=C:/Program Files/CMake/share/cmake-4.3
-
--- a/docs/APP_AND_CORE_ARCHITECTURE.md
+++ b/docs/APP_AND_CORE_ARCHITECTURE.md
@ -1,165 +0,0 @@
-# 应用层与 Core 分层设计
-
-本文记录当前项目的代码分层。`src/Core` 是可复用底层库，`src/Apps` 放具体应用和游戏。
-
-## 目录边界
-
-```text
-src/
-  Core/                 # 底层库：渲染、数学、资源、平台适配
-    Asset/              # 离线资源格式加载
-    Core/               # FrameBuffer、DepthBuffer、Renderer、Timer
-    Draw2D/             # Core::DrawContext
-    Math/               # Vector、Matrix、MathUtil
-    Platform/           # 显示、时间、音频、按键等平台接口和后端
-    Rasterizer/         # 线段和三角形光栅化
-    RenderData/         # Color、Image、Triangle、Tilemap 等数据结构
-    Scene/              # Camera、Transform、Mesh、Model
-    Shading/            # Shader 相关代码
-  Apps/
-    Demo/               # Core 能力演示
-    Game/               # Tom 游戏
-```
-
-`src/Core/Core` 这个二级目录保留的是原底层库里的核心运行时对象。它和顶层 `src/Core` 名称重复，但含义不同：
-
- `src/Core`：整个底层库。
- `src/Core/Core`：底层库内部的 framebuffer、depthbuffer、timer 等核心对象。
-
-后续如果觉得重复命名影响阅读，可以再把 `src/Core/Core` 单独改成 `Runtime/` 或 `Buffer/`，但这次先只做旧底层库名称到 `Core` 的一致性修复。
-
-## 依赖方向
-
-允许：
-
-```text
-Apps -> Shared -> Core -> Platform
-Apps -> Core
-```
-
-禁止：
-
-```text
-Core -> Apps
-Core -> Shared
-GameA -> GameB
-GameB -> GameA
-Platform -> Game
-```
-
-Core 层不应该知道具体游戏规则、场景流程、角色状态机、关卡数据或游戏专属资源路径。
-
-## Core 职责
-
-Core 只提供底层能力：
-
- 管理 `FrameBuffer`、`DepthBuffer` 和绘制上下文。
- 提供基础绘制接口：line、triangle、sprite、sprite region、tilemap、bitmap font。
- 提供基础数学、颜色、图片、三角形、tilemap 等数据结构。
- 封装 SDL2 / framebuffer 显示提交。
- 提供独立时间源 `Platform::ITimeSource`。
- 提供音频输入、音频输出和按键输入的抽象接口。
- 使用离线转换后的运行时资源，不在热路径解码 PNG/TTF。
-
-Core 不做：
-
- 不实现具体游戏规则。
- 不直接读取某个游戏专属资源目录。
- 不在核心绘制接口暴露 SDL2 类型。
- 不在每帧热路径中执行图片、字体解码或文件 IO。
-
-## 应用职责
-
-`src/Apps/*` 负责具体应用流程：
-
- 创建具体游戏或 Demo 的主循环。
- 加载应用自己的资源。
- 调用 `Core::DrawContext` 绘制画面。
- 根据平台输入更新游戏状态。
-
-当前主程序位于：
-
-```text
-src/Apps/Game/Main.cpp
-```
-
-它默认启动 Tom 游戏视觉入口。
-
-## DrawContext
-
-`Core::DrawContext` 是当前统一绘制入口，位于：
-
-```text
-src/Core/Draw2D/DrawContext.h
-src/Core/Draw2D/DrawContext.cpp
-```
-
-它封装：
-
- `Core::FrameBuffer`
- `Core::DepthBuffer`
- `Rasterizer::Rasterizer`
- `Rasterizer::TriangleRasterizer`
-
-对外提供：
-
-```cpp
-Core::DrawContext ctx(width, height);
-ctx.clear(RenderData::Color(18, 18, 24, 255));
-ctx.draw_sprite(x, y, image);
-ctx.draw_text(font, x, y, color, "text");
-ctx.present(display);
-```
-
-## 显示后端
-
-平台层采用“抽象接口 + 多套后端实现”的模式。
-
-显示层通过 `Platform::IDisplay` 抽象：
-
-```text
-Platform::IDisplay
-  SDLDisplay   # PC / SDL2 调试后端
-  FBDisplay    # Linux /dev/fb0 后端
-```
-
-音频输入通过 `Platform::IAudioInput` 抽象：
-
-```text
-Platform::IAudioInput
-  SdlAudioInput    # PC / SDL2 麦克风后端
-  AlsaAudioInput   # Linux ALSA 录音后端
-```
-
-音频输出通过 `Platform::IAudioOutput` 抽象：
-
-```text
-Platform::IAudioOutput
-  SdlAudioOutput   # PC / SDL2 扬声器后端
-  AlsaAudioOutput  # Linux ALSA 播放后端
-```
-
-按键输入通过 `Platform::IButtonInput` 抽象：
-
-```text
-Platform::IButtonInput
-  SdlKeyboardButtonInput # PC / SDL2 键盘后端，默认空格键
-  EvdevButtonInput # Linux evdev 按键后端
-```
-
-游戏代码只能依赖这些 `I*` 接口。ALSA、evdev、SDL2、`/dev/fb0` 等平台细节只能出现在 `src/Core/Platform` 或明确的平台适配代码中。
-如果只需要当前构建平台的默认后端，可以使用 `Platform::DefaultAudioInput`、`Platform::DefaultAudioOutput` 和 `Platform::DefaultButtonInput`。
-
-CMake 通过 `USE_FRAMEBUFFER` 选择实现：
-
-```cmake
-DUSE_FRAMEBUFFER=OFF  # 默认，使用 SDLDisplay
-DUSE_FRAMEBUFFER=ON   # 使用 FBDisplay
-```
-
-## 后续建议
-
-1. 保持 `Core` 不依赖 `Apps`。
-2. 新增游戏逻辑放在 `src/Apps/Game` 或新的 `src/Apps/*`。
-3. 新增底层绘制、数学、资源格式、平台显示能力放在 `src/Core`。
-4. 如果继续清理命名，优先处理 `src/Core/Core` 这个重复目录名。
--- a/docs/CONVENTIONS.md
+++ b/docs/CONVENTIONS.md
@ -2,7 +2,7 @@

 本文档用于记录当前项目已经采用的坐标系、矩阵、相机和屏幕空间约定，避免后续开发时在符号、方向和乘法顺序上产生混乱。

-> 文档分工：坐标、矩阵、深度等数学语义记录在本文档；IMX6U 运行时性能红线记录在 `../docs/DEVELOPMENT_GUIDELINES.md`；两个游戏、启动器和底层图形库的分层边界记录在 `../docs/APP_AND_CORE_ARCHITECTURE.md`。新增或修改热路径、应用层边界、显示后端代码时，应同步参考对应文档。
+> 文档分工：坐标、矩阵、深度等数学语义记录在本文档；IMX6U 运行时性能红线记录在 `../docs/DEVELOPMENT_GUIDELINES.md`；两个游戏、启动器和底层图形库的分层边界记录在 `../docs/APP_AND_GFX_ARCHITECTURE.md`。新增或修改热路径、应用层边界、显示后端代码时，应同步参考对应文档。

 ## 1. 通用约定

--- a/docs/DEVELOPMENT_GUIDELINES.md
+++ b/docs/DEVELOPMENT_GUIDELINES.md
@ -9,7 +9,7 @@
 - **先按 IMX6U 运行时成本设计，再按 PC 调试便利包装。** Windows/Linux SDL 版本只是验证与调试入口，不代表最终性能预算。
 - **热路径默认禁止隐式高成本操作。** 每帧、每对象、每顶点、每像素级代码必须避免动态分配、浮点、虚函数链、复杂 STL 算法和异常控制流。
 - **核心逻辑保持 C++11 兼容。** 不引入需要新工具链或重型运行时支持的语言/库特性。
- **优先复用已有类型与缓冲。** 新增抽象前先确认 `src/Core/Core`、`src/Core/Math`、`src/Core/RenderData` 中是否已有可复用能力。
+- **优先复用已有类型与缓冲。** 新增抽象前先确认 `src/Gfx/Core`、`src/Gfx/Math`、`src/Gfx/RenderData` 中是否已有可复用能力。
 - **性能相关例外必须写明边界。** 如果必须违反本文红线，需要在代码附近注释说明原因、调用频率、数据规模和替代方案。

 ## 2. 数值计算规范
@ -164,7 +164,7 @@ Framebuffer 后端是 IMX6U 上最容易误判性能的路径。`FBDisplay::pres

 后续如果继续推进性能优化，优先建立这些基础设施：

-1. 统一定点数类型与转换工具，集中放在 `src/Core/Math/`。
+1. 统一定点数类型与转换工具，集中放在 `src/Gfx/Math/`。
 2. 帧级临时缓冲/工作区，集中管理可复用数组和 scratch memory。
 3. 渲染数据的运行时紧凑格式，区分“加载期模型数据”和“运行时渲染数据”。
 4. ARM release 配置下的性能开关，关闭日志、调试绘制和昂贵检查。
@ -184,8 +184,8 @@ Framebuffer 后端是 IMX6U 上最容易误判性能的路径。`FBDisplay::pres

 ### 12.1 SDL2 边界

- SDL2 类型和调用只允许出现在 `src/Core/Platform/` 以及明确的平台适配层中。
- `src/Core/Core`、`src/Core/Math`、`src/Core/Rasterizer`、`src/Core/RenderData`、`src/Core/Scene`、`src/Core/Draw2D` 不应直接包含 `SDL.h`。
+- SDL2 类型和调用只允许出现在 `src/Gfx/Platform/` 以及明确的平台适配层中。
+- `src/Gfx/Core`、`src/Gfx/Math`、`src/Gfx/Rasterizer`、`src/Gfx/RenderData`、`src/Gfx/Scene`、`src/Gfx/Draw2D` 不应直接包含 `SDL.h`。
 - 游戏逻辑不直接处理 `SDL_Event`，应转换为项目自己的输入状态结构。
 - 时间源不挂在 `IDisplay` 上；核心逻辑从 `Platform::ITimeSource` 读取单调整数毫秒，并使用 `Core::Timer` 生成整数 tick / fixed timestep，不直接依赖 float 秒数。

--- a/src/Apps/Demo/main.cpp
+++ b/src/Apps/Demo/main.cpp
@ -1,22 +1,19 @@
-#include <algorithm>
-#include <chrono>
-#include <cstdint>
-#include <cstdlib>
-#include <cstring>
-#include <cstdio>
 #include <iostream>
+#include <array>
+#include <cstdint>
+#include <cstdio>
+#include <cstring>
 #include <thread>
 #include <chrono>
 #include "Color.h"
 #include <cstdlib>
 #include "Timer.h"
 #include "DrawContext.h"
-#include "Image.h"
-#include "TimeSource.h"
-#include "Timer.h"
-#include "font_atlas.h"
 #include "test_sprite.h"
+#include "font_atlas.h"

+#include "Display.h"
+#include "TimeSource.h"
 #ifdef USE_FRAMEBUFFER
 #include "FBDisplay.h"
 #else
@ -33,8 +30,8 @@ static void PrintUsage(const char *program_name)
 		<< "       " << program_name << " [--fps=30|45|60]\n";
 }

-	struct ProgramOptions
-	{
+struct ProgramOptions
+{
 	uint32_t target_fps;
 	bool show_help;

@ -43,32 +40,16 @@ static void PrintUsage(const char *program_name)
 		  show_help(false)
 	{
 	}
-	};
+};

-	static Platform::IDisplay* CreateDisplay()
-	{
-#ifdef USE_FRAMEBUFFER
-		return new Platform::FBDisplay();
-#else
-		return new Platform::SDLDisplay();
-#endif
-	}
-
-	static void PrintUsage(const char* program_name)
-	{
-		std::cout
-			<< "Usage: " << program_name << " [--fps 30|45|60]\n"
-			<< "       " << program_name << " [--fps=30|45|60]\n";
-	}
-
-	static ProgramOptions ParseProgramOptions(int argc, char* argv[])
-	{
+static ProgramOptions ParseProgramOptions(int argc, char *argv[])
+{
 	ProgramOptions options;

 	for (int i = 1; i < argc; ++i)
 	{
-			const char* arg = argv[i];
-			const char* fps_value = nullptr;
+		const char *arg = argv[i];
+		const char *fps_value = nullptr;

 		if (std::strcmp(arg, "--help") == 0 || std::strcmp(arg, "-h") == 0)
 		{
@ -107,19 +88,18 @@ static void PrintUsage(const char *program_name)
 	}

 	return options;
-	}
+}

-	static void SleepRemainingFrameTime(const Core::Timer& timer, const Platform::ITimeSource& time_source)
-	{
+static void SleepRemainingFrameTime(const Core::Timer &timer, const Platform::ITimeSource &time_source)
+{
 	const uint32_t sleep_ms = timer.remaining_frame_ms(time_source.get_time_ms());
 	if (sleep_ms > 0u)
 	{
 		std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms));
 	}
-	}
 }

-int main(int argc, char* argv[])
+int main(int argc, char *argv[])
 {
 	const ProgramOptions options = ParseProgramOptions(argc, argv);
 	if (options.show_help)
@ -127,17 +107,23 @@ int main(int argc, char* argv[])
 		PrintUsage(argv[0]);
 		return 0;
 	}
+	Core::Timer timer(options.target_fps);
+	Platform::SteadyTimeSource time_source;

-	Platform::IDisplay* display = CreateDisplay();
-	if (!display->init(DemoWidth, DemoHeight))
+#ifdef USE_FRAMEBUFFER
+	Platform::IDisplay *display = new Platform::FBDisplay();
+#else
+	Platform::IDisplay *display = new Platform::SDLDisplay();
+#endif
+
+	if (!display->init(width, height))
 	{
 		delete display;
 		return -1;
 	}

-	Core::DrawContext ctx(DemoWidth, DemoHeight);
-	Core::Timer timer(options.target_fps);
-	Platform::SteadyTimeSource time_source;
+	Gfx::DrawContext ctx(width, height);
+	std::cout << "Target FPS: " << timer.target_fps() << std::endl;

 	RenderData::BitmapFont font;
 	font.atlas = RenderData::Image(font_atlas_pixels, font_atlas_width, font_atlas_height);
@ -163,7 +149,6 @@ int main(int argc, char* argv[])
 	int32_t fps = 0;
 	int32_t frame_count = 0;
 	uint32_t last_fps_time = 0;
-	uint32_t animation_time_ms = 0;
 	char fps_text[32];
 	char perf_text[64];
 	uint32_t last_frame_ms = 0;
@ -188,13 +173,12 @@ int main(int argc, char* argv[])
 		// FPS 计数
 		++frame_count;
 		const uint32_t now = time_source.get_time_ms();
-		if (now - last_fps_time >= 1000u)
+		if (now - last_fps_time >= 1000)
 		{
 			fps = frame_count;
 			frame_count = 0;
 			last_fps_time = now;
 		}
-
 		std::snprintf(fps_text, sizeof(fps_text), "FPS: %d", fps);
 		ctx.draw_text(font, 4, 4, fpsColor, fpsBg, fps_text);
 		std::snprintf(perf_text, sizeof(perf_text), "Frame:%ums Present:%ums", last_frame_ms, last_present_ms);
--- a/src/Apps/Game/Main.cpp
+++ b/src/Apps/Game/Main.cpp
@ -1,301 +0,0 @@
-#include <algorithm>
-#include <chrono>
-#include <cstdint>
-#include <cstdlib>
-#include <cstring>
-#include <fstream>
-#include <iostream>
-#include <string>
-#include <thread>
-#include <vector>
-
-#include "Color.h"
-#include "Display.h"
-#include "DrawContext.h"
-#include "Image.h"
-#include "SpriteAssetLoader.h"
-#include "TimeSource.h"
-#include "Timer.h"
-
-#ifdef USE_FRAMEBUFFER
-#include "FBDisplay.h"
-#else
-#include "SDLDisplay.h"
-#endif
-
-namespace
-{
-	const int32_t ScreenWidth = 800;
-	const int32_t ScreenHeight = 480;
-
-	struct ProgramOptions
-	{
-		uint32_t target_fps;
-		bool show_help;
-
-		ProgramOptions()
-			: target_fps(Core::Timer::DefaultFps),
-			  show_help(false)
-		{
-		}
-	};
-
-	struct SpriteImage
-	{
-		std::vector<uint32_t> pixels;
-		RenderData::Image image;
-
-		bool is_valid() const
-		{
-			return image.pixels != nullptr && image.width > 0 && image.height > 0;
-		}
-	};
-
-	static Platform::IDisplay* CreateDisplay()
-	{
-#ifdef USE_FRAMEBUFFER
-		return new Platform::FBDisplay();
-#else
-		return new Platform::SDLDisplay();
-#endif
-	}
-
-	static void PrintUsage(const char* program_name)
-	{
-		std::cout
-			<< "Usage: " << program_name << " [--fps 30|45|60]\n"
-			<< "       " << program_name << " [--fps=30|45|60]\n";
-	}
-
-	static ProgramOptions ParseProgramOptions(int argc, char* argv[])
-	{
-		ProgramOptions options;
-
-		for (int i = 1; i < argc; ++i)
-		{
-			const char* arg = argv[i];
-			const char* fps_value = nullptr;
-
-			if (std::strcmp(arg, "--help") == 0 || std::strcmp(arg, "-h") == 0)
-			{
-				options.show_help = true;
-				return options;
-			}
-			else if (std::strcmp(arg, "--fps") == 0)
-			{
-				if (i + 1 < argc)
-				{
-					fps_value = argv[++i];
-				}
-				else
-				{
-					std::cerr << "Missing value for --fps, falling back to 30. Supported: 30, 45, 60.\n";
-				}
-			}
-			else if (std::strncmp(arg, "--fps=", 6) == 0)
-			{
-				fps_value = arg + 6;
-			}
-
-			if (fps_value != nullptr)
-			{
-				const uint32_t parsed_fps = static_cast<uint32_t>(std::strtoul(fps_value, nullptr, 10));
-				if (Core::Timer::is_supported_fps(parsed_fps))
-				{
-					options.target_fps = parsed_fps;
-				}
-				else
-				{
-					std::cerr << "Unsupported FPS '" << fps_value << "', falling back to 30. Supported: 30, 45, 60.\n";
-					options.target_fps = Core::Timer::DefaultFps;
-				}
-			}
-		}
-
-		return options;
-	}
-
-	static void SleepRemainingFrameTime(const Core::Timer& timer, const Platform::ITimeSource& time_source)
-	{
-		const uint32_t sleep_ms = timer.remaining_frame_ms(time_source.get_time_ms());
-		if (sleep_ms > 0u)
-		{
-			std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms));
-		}
-	}
-
-	static std::string FindSpriteAssetPath(const std::string& file_name)
-	{
-		const char* roots[] = {
-			"src/Apps/Game/assets/sprites/",
-			"../src/Apps/Game/assets/sprites/",
-			"../../src/Apps/Game/assets/sprites/",
-			"../../../src/Apps/Game/assets/sprites/",
-			"/usr/local/share/imx6u-game/sprites/"
-		};
-
-		for (size_t i = 0; i < sizeof(roots) / sizeof(roots[0]); ++i)
-		{
-			const std::string path = std::string(roots[i]) + file_name;
-			std::ifstream file(path.c_str(), std::ios::binary);
-			if (file.good())
-			{
-				return path;
-			}
-		}
-
-		return std::string("src/Apps/Game/assets/sprites/") + file_name;
-	}
-
-	static void EnableAlphaColorKey(SpriteImage& sprite)
-	{
-		for (size_t i = 0; i < sprite.pixels.size(); ++i)
-		{
-			if ((sprite.pixels[i] & 0xFFu) == 0u)
-			{
-				sprite.pixels[i] = 0x00000000u;
-			}
-		}
-
-		sprite.image = RenderData::Image(
-			sprite.pixels.data(),
-			sprite.image.width,
-			sprite.image.height,
-			0x00000000u);
-	}
-
-	static bool LoadSpriteAsset(const std::string& file_name, SpriteImage& sprite, bool use_alpha_key)
-	{
-		const std::string path = FindSpriteAssetPath(file_name);
-		if (!Asset::SpriteAssetLoader::Load(path, sprite.pixels, sprite.image))
-		{
-			std::cerr << "Load sprite asset failed: " << path << std::endl;
-			return false;
-		}
-
-		if (use_alpha_key)
-		{
-			EnableAlphaColorKey(sprite);
-		}
-
-		return sprite.is_valid();
-	}
-
-	static const RenderData::Image& SelectTomFrame(
-		uint32_t animation_time_ms,
-		const SpriteImage& stand,
-		const SpriteImage& listen,
-		const SpriteImage* const* speaking_frames,
-		size_t speaking_frame_count)
-	{
-		const uint32_t phase = (animation_time_ms / 1000u) % 6u;
-		if (phase < 2u)
-		{
-			return stand.image;
-		}
-		if (phase < 3u)
-		{
-			return listen.image;
-		}
-
-		const size_t frame_index = (animation_time_ms / 120u) % speaking_frame_count;
-		return speaking_frames[frame_index]->image;
-	}
-}
-
-int main(int argc, char* argv[])
-{
-	const ProgramOptions options = ParseProgramOptions(argc, argv);
-	if (options.show_help)
-	{
-		PrintUsage(argv[0]);
-		return 0;
-	}
-
-	Platform::IDisplay* display = CreateDisplay();
-	if (!display->init(ScreenWidth, ScreenHeight))
-	{
-		delete display;
-		return -1;
-	}
-
-	SpriteImage background;
-	SpriteImage tom_stand;
-	SpriteImage tom_listen;
-	SpriteImage tom_say1;
-	SpriteImage tom_say2;
-	SpriteImage tom_say3;
-	SpriteImage tom_say4;
-	SpriteImage record_button;
-
-	if (!LoadSpriteAsset("background.sprite", background, false) ||
-		!LoadSpriteAsset("Tom-stand.sprite", tom_stand, true) ||
-		!LoadSpriteAsset("Tom-listhen.sprite", tom_listen, true) ||
-		!LoadSpriteAsset("Tom-say1.sprite", tom_say1, true) ||
-		!LoadSpriteAsset("Tom-say2.sprite", tom_say2, true) ||
-		!LoadSpriteAsset("Tom-say3.sprite", tom_say3, true) ||
-		!LoadSpriteAsset("Tom-say4.sprite", tom_say4, true) ||
-		!LoadSpriteAsset("ui-record.sprite", record_button, true))
-	{
-		std::cerr << "Missing Tom sprite assets. Run the ConvertTomSprites target first.\n";
-		display->shutdown();
-		delete display;
-		return -1;
-	}
-
-	const SpriteImage* speaking_frames[] = {
-		&tom_say1,
-		&tom_say2,
-		&tom_say3,
-		&tom_say4,
-		&tom_say3,
-		&tom_say2
-	};
-	const size_t speaking_frame_count = sizeof(speaking_frames) / sizeof(speaking_frames[0]);
-
-	Core::DrawContext ctx(ScreenWidth, ScreenHeight);
-	Core::Timer timer(options.target_fps);
-	Platform::SteadyTimeSource time_source;
-
-	std::cout << "Tom game started. Target FPS: " << timer.target_fps() << std::endl;
-
-	bool is_running = true;
-	uint32_t animation_time_ms = 0;
-	while (is_running)
-	{
-		timer.begin_frame(time_source.get_time_ms());
-		animation_time_ms += timer.fixed_delta_ms();
-
-		bool should_quit = false;
-		display->poll_events(should_quit);
-		if (should_quit)
-		{
-			is_running = false;
-		}
-
-		ctx.clear(RenderData::Color(18, 18, 24, 255));
-		ctx.draw_sprite(0, 0, background.image);
-
-		const RenderData::Image& tom = SelectTomFrame(
-			animation_time_ms,
-			tom_stand,
-			tom_listen,
-			speaking_frames,
-			speaking_frame_count);
-
-		const int32_t tom_x = (ScreenWidth - tom.width) / 2;
-		const int32_t tom_y = std::max(0, ScreenHeight - tom.height - 72);
-		ctx.draw_sprite(tom_x, tom_y, tom);
-
-		const int32_t button_x = (ScreenWidth - record_button.image.width) / 2;
-		const int32_t button_y = ScreenHeight - record_button.image.height - 16;
-		ctx.draw_sprite(button_x, button_y, record_button.image);
-
-		ctx.present(display);
-		SleepRemainingFrameTime(timer, time_source);
-	}
-
-	display->shutdown();
-	delete display;
-	return 0;
-}
--- a/src/Apps/Game/assets/audio/music/.gitkeep
+++ b/src/Apps/Game/assets/audio/music/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/audio/sfx/.gitkeep
+++ b/src/Apps/Game/assets/audio/sfx/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/fonts/.gitkeep
+++ b/src/Apps/Game/assets/fonts/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/materials/.gitkeep
+++ b/src/Apps/Game/assets/materials/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/models/.gitkeep
+++ b/src/Apps/Game/assets/models/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/raw/.gitkeep
+++ b/src/Apps/Game/assets/raw/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/raw/Tom-listhen.png
+++ b/src/Apps/Game/assets/raw/Tom-listhen.png
--- a/src/Apps/Game/assets/raw/Tom-openmouse1.png
+++ b/src/Apps/Game/assets/raw/Tom-openmouse1.png
--- a/src/Apps/Game/assets/raw/Tom-openmouse2.png
+++ b/src/Apps/Game/assets/raw/Tom-openmouse2.png
--- a/src/Apps/Game/assets/raw/Tom-say1.png
+++ b/src/Apps/Game/assets/raw/Tom-say1.png
--- a/src/Apps/Game/assets/raw/Tom-say2.png
+++ b/src/Apps/Game/assets/raw/Tom-say2.png
--- a/src/Apps/Game/assets/raw/Tom-say3.png
+++ b/src/Apps/Game/assets/raw/Tom-say3.png
--- a/src/Apps/Game/assets/raw/Tom-say4.png
+++ b/src/Apps/Game/assets/raw/Tom-say4.png
--- a/src/Apps/Game/assets/raw/Tom-stand.png
+++ b/src/Apps/Game/assets/raw/Tom-stand.png
--- a/src/Apps/Game/assets/raw/background.png
+++ b/src/Apps/Game/assets/raw/background.png
--- a/src/Apps/Game/assets/raw/ui-fat.png
+++ b/src/Apps/Game/assets/raw/ui-fat.png
--- a/src/Apps/Game/assets/raw/ui-hand.png
+++ b/src/Apps/Game/assets/raw/ui-hand.png
--- a/src/Apps/Game/assets/raw/ui-i.png
+++ b/src/Apps/Game/assets/raw/ui-i.png
--- a/src/Apps/Game/assets/raw/ui-record.png
+++ b/src/Apps/Game/assets/raw/ui-record.png
--- a/src/Apps/Game/assets/raw/ui-tom.png
+++ b/src/Apps/Game/assets/raw/ui-tom.png
--- a/src/Apps/Game/assets/sprites/.gitkeep
+++ b/src/Apps/Game/assets/sprites/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/sprites/Tom-listhen.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-listhen.sprite
--- a/src/Apps/Game/assets/sprites/Tom-openmouse1.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-openmouse1.sprite
--- a/src/Apps/Game/assets/sprites/Tom-openmouse2.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-openmouse2.sprite
--- a/src/Apps/Game/assets/sprites/Tom-say1.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-say1.sprite
--- a/src/Apps/Game/assets/sprites/Tom-say2.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-say2.sprite
--- a/src/Apps/Game/assets/sprites/Tom-say3.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-say3.sprite
--- a/src/Apps/Game/assets/sprites/Tom-say4.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-say4.sprite
--- a/src/Apps/Game/assets/sprites/Tom-stand.sprite
+++ b/src/Apps/Game/assets/sprites/Tom-stand.sprite
--- a/src/Apps/Game/assets/sprites/background.sprite
+++ b/src/Apps/Game/assets/sprites/background.sprite
--- a/src/Apps/Game/assets/sprites/ui-fat.sprite
+++ b/src/Apps/Game/assets/sprites/ui-fat.sprite
--- a/src/Apps/Game/assets/sprites/ui-hand.sprite
+++ b/src/Apps/Game/assets/sprites/ui-hand.sprite
--- a/src/Apps/Game/assets/sprites/ui-i.sprite
+++ b/src/Apps/Game/assets/sprites/ui-i.sprite
--- a/src/Apps/Game/assets/sprites/ui-record.sprite
+++ b/src/Apps/Game/assets/sprites/ui-record.sprite
--- a/src/Apps/Game/assets/sprites/ui-tom.sprite
+++ b/src/Apps/Game/assets/sprites/ui-tom.sprite
--- a/src/Apps/Game/assets/textures/.gitkeep
+++ b/src/Apps/Game/assets/textures/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/tilesets/.gitkeep
+++ b/src/Apps/Game/assets/tilesets/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/assets/ui/.gitkeep
+++ b/src/Apps/Game/assets/ui/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/docs/design/.gitkeep
+++ b/src/Apps/Game/docs/design/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/docs/technical/.gitkeep
+++ b/src/Apps/Game/docs/technical/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/src/app/.gitkeep
+++ b/src/Apps/Game/src/app/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/src/app/TomGameApp.cpp
+++ b/src/Apps/Game/src/app/TomGameApp.cpp
@ -1,280 +0,0 @@
-#include "TomGameApp.h"
-#include "../audio/VoiceEffect.h"
-#include "AudioInput.h"
-#include "AudioOutput.h"
-#include "ButtonInput.h"
-#include "FrameBuffer.h"
-#include "SpriteRasterizer.h"
-#include "Image.h"
-
-namespace Game
-{
-	TomGameApp::TomGameApp(
-		Core::FrameBuffer* frameBuffer,
-		Rasterizer::SpriteRasterizer* spriteRasterizer,
-		Platform::IAudioInput* audioInput,
-		Platform::IAudioOutput* audioOutput,
-		Platform::IButtonInput* buttonInput) :
-		frameBuffer(frameBuffer),
-		spriteRasterizer(spriteRasterizer),
-		audioInput(audioInput),
-		audioOutput(audioOutput),
-		buttonInput(buttonInput),
-		state(TomGameState::Idle),
-		screenWidth(frameBuffer ? frameBuffer->get_width() : 0),
-		screenHeight(frameBuffer ? frameBuffer->get_height() : 0),
-		tomX(0),
-		tomY(0),
-		buttonX(0),
-		buttonY(0),
-		audioSampleRate(16000),
-		audioChannels(1),
-		pitchFactor(1.45f),
-		outputGain(1.15f)
-	{
-		recorder.configure(audioSampleRate, audioChannels);
-	}
-
-	void TomGameApp::set_assets(const TomGameAssets& assets)
-	{
-		this->assets = assets;
-
-		speakingFrames.clear();
-		if (assets.tomSay1 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay1));
-		if (assets.tomSay2 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay2));
-		if (assets.tomSay3 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay3));
-		if (assets.tomSay4 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay4));
-		if (assets.tomSay3 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay3));
-		if (assets.tomSay2 != nullptr) speakingFrames.push_back(RenderData::Sprite(assets.tomSay2));
-
-		speakingAnimator.set_frames(speakingFrames);
-		speakingAnimator.set_frame_time(0.08f);
-		speakingAnimator.set_loop(true);
-		speakingAnimator.stop();
-
-		calculate_layout();
-	}
-
-	void TomGameApp::configure_audio(uint32_t sampleRate, uint32_t channels)
-	{
-		if (sampleRate > 0)
-		{
-			audioSampleRate = sampleRate;
-		}
-		if (channels > 0)
-		{
-			audioChannels = channels;
-		}
-
-		recorder.configure(audioSampleRate, audioChannels);
-	}
-
-	void TomGameApp::update(float deltaTime, bool buttonPressed)
-	{
-		bool trigger = buttonPressed;
-		if (buttonInput != nullptr)
-		{
-			buttonInput->update();
-			trigger = trigger || buttonInput->was_pressed();
-		}
-
-		switch (state)
-		{
-		case TomGameState::Idle:
-			if (trigger)
-			{
-				start_recording();
-			}
-			break;
-
-		case TomGameState::Recording:
-			if (audioInput != nullptr)
-			{
-				recorder.update(*audioInput, 512);
-			}
-			if (trigger || recorder.is_finished())
-			{
-				finish_recording();
-			}
-			break;
-
-		case TomGameState::Processing:
-			process_voice();
-			break;
-
-		case TomGameState::Speaking:
-			speakingAnimator.update(deltaTime);
-			if (audioOutput == nullptr)
-			{
-				back_to_idle();
-				break;
-			}
-
-			player.update(*audioOutput, 1024);
-			if (player.is_finished())
-			{
-				back_to_idle();
-			}
-			break;
-		}
-	}
-
-	void TomGameApp::draw()
-	{
-		if (spriteRasterizer == nullptr)
-		{
-			return;
-		}
-
-		if (assets.background != nullptr)
-		{
-			spriteRasterizer->DrawImage(*assets.background, 0, 0);
-		}
-
-		const RenderData::Sprite tomSprite = get_current_tom_sprite();
-		if (tomSprite.is_valid())
-		{
-			spriteRasterizer->DrawSprite(tomSprite, tomX, tomY);
-		}
-
-		if (assets.button != nullptr)
-		{
-			spriteRasterizer->DrawImage(*assets.button, buttonX, buttonY);
-		}
-	}
-
-	bool TomGameApp::is_ready() const
-	{
-		return frameBuffer != nullptr &&
-			spriteRasterizer != nullptr &&
-			assets.background != nullptr &&
-			assets.tomStand != nullptr &&
-			assets.tomListen != nullptr &&
-			assets.button != nullptr &&
-			speakingFrames.size() == 6;
-	}
-
-	bool TomGameApp::is_button_hit(int32_t x, int32_t y) const
-	{
-		if (assets.button == nullptr)
-		{
-			return false;
-		}
-
-		return x >= buttonX &&
-			x < buttonX + assets.button->get_width() &&
-			y >= buttonY &&
-			y < buttonY + assets.button->get_height();
-	}
-
-	void TomGameApp::calculate_layout()
-	{
-		screenWidth = frameBuffer ? frameBuffer->get_width() : 0;
-		screenHeight = frameBuffer ? frameBuffer->get_height() : 0;
-
-		if (assets.button != nullptr)
-		{
-			buttonX = (screenWidth - assets.button->get_width()) / 2;
-			buttonY = screenHeight - assets.button->get_height() - 16;
-		}
-
-		const RenderData::Sprite tomSprite = get_current_tom_sprite();
-		if (tomSprite.is_valid())
-		{
-			tomX = (screenWidth - tomSprite.width) / 2;
-			tomY = screenHeight - tomSprite.height - 72;
-			if (tomY < 0)
-			{
-				tomY = 0;
-			}
-		}
-	}
-
-	void TomGameApp::start_recording()
-	{
-		if (audioInput != nullptr && !audioInput->is_open())
-		{
-			audioInput->init("default", audioSampleRate, audioChannels);
-		}
-
-		player.stop();
-		recorder.configure(audioSampleRate, audioChannels);
-		recorder.start();
-		state = TomGameState::Recording;
-		calculate_layout();
-	}
-
-	void TomGameApp::finish_recording()
-	{
-		if (recorder.is_recording())
-		{
-			recorder.stop();
-		}
-
-		state = TomGameState::Processing;
-	}
-
-	void TomGameApp::process_voice()
-	{
-		std::vector<int16_t> samples = recorder.get_samples();
-		samples = VoiceEffect::trim_silence(samples, 0.02f, audioChannels);
-		samples = VoiceEffect::pitch_up(samples, pitchFactor, audioChannels);
-		samples = VoiceEffect::amplify(samples, outputGain);
-
-		start_speaking(samples);
-	}
-
-	void TomGameApp::start_speaking(const std::vector<int16_t>& samples)
-	{
-		if (samples.empty())
-		{
-			back_to_idle();
-			return;
-		}
-
-		player.set_voice(samples, audioSampleRate, audioChannels);
-		player.play();
-
-		speakingAnimator.reset();
-		speakingAnimator.play();
-		state = TomGameState::Speaking;
-		calculate_layout();
-	}
-
-	void TomGameApp::back_to_idle()
-	{
-		player.stop();
-		speakingAnimator.stop();
-		state = TomGameState::Idle;
-		calculate_layout();
-	}
-
-	void TomGameApp::draw_sprite_centered(const RenderData::Sprite& sprite, int32_t centerX, int32_t y)
-	{
-		if (spriteRasterizer == nullptr || !sprite.is_valid())
-		{
-			return;
-		}
-
-		spriteRasterizer->DrawSprite(sprite, centerX - sprite.width / 2, y);
-	}
-
-	const RenderData::Sprite TomGameApp::get_current_tom_sprite() const
-	{
-		if (state == TomGameState::Recording && assets.tomListen != nullptr)
-		{
-			return RenderData::Sprite(assets.tomListen);
-		}
-
-		if (state == TomGameState::Speaking)
-		{
-			const RenderData::Sprite* sprite = speakingAnimator.get_current_sprite();
-			if (sprite != nullptr)
-			{
-				return *sprite;
-			}
-		}
-
-		return RenderData::Sprite(assets.tomStand);
-	}
-}
--- a/src/Apps/Game/src/app/TomGameApp.h
+++ b/src/Apps/Game/src/app/TomGameApp.h
@ -1,120 +0,0 @@
-#pragma once
-#include <cstdint>
-#include <vector>
-#include "../audio/VoicePlayer.h"
-#include "../audio/VoiceRecorder.h"
-#include "../components/SpriteAnimator.h"
-#include "Sprite.h"
-
-namespace Core
-{
-	class FrameBuffer;
-}
-
-namespace Rasterizer
-{
-	class SpriteRasterizer;
-}
-
-namespace RenderData
-{
-	class Image;
-}
-
-namespace Platform
-{
-	class IAudioInput;
-	class IAudioOutput;
-	class IButtonInput;
-}
-
-namespace Game
-{
-	enum class TomGameState
-	{
-		Idle,
-		Recording,
-		Processing,
-		Speaking
-	};
-
-	struct TomGameAssets
-	{
-		const RenderData::Image* background;
-		const RenderData::Image* tomStand;
-		const RenderData::Image* tomListen;
-		const RenderData::Image* tomSay1;
-		const RenderData::Image* tomSay2;
-		const RenderData::Image* tomSay3;
-		const RenderData::Image* tomSay4;
-		const RenderData::Image* button;
-
-		TomGameAssets() :
-			background(nullptr),
-			tomStand(nullptr),
-			tomListen(nullptr),
-			tomSay1(nullptr),
-			tomSay2(nullptr),
-			tomSay3(nullptr),
-			tomSay4(nullptr),
-			button(nullptr)
-		{}
-	};
-
-	class TomGameApp
-	{
-	private:
-		Core::FrameBuffer* frameBuffer;
-		Rasterizer::SpriteRasterizer* spriteRasterizer;
-		Platform::IAudioInput* audioInput;
-		Platform::IAudioOutput* audioOutput;
-		Platform::IButtonInput* buttonInput;
-
-		TomGameAssets assets;
-		TomGameState state;
-		VoiceRecorder recorder;
-		VoicePlayer player;
-		SpriteAnimator speakingAnimator;
-		std::vector<RenderData::Sprite> speakingFrames;
-
-		int32_t screenWidth;
-		int32_t screenHeight;
-		int32_t tomX;
-		int32_t tomY;
-		int32_t buttonX;
-		int32_t buttonY;
-
-		uint32_t audioSampleRate;
-		uint32_t audioChannels;
-		float pitchFactor;
-		float outputGain;
-
-		void calculate_layout();
-		void start_recording();
-		void finish_recording();
-		void process_voice();
-		void start_speaking(const std::vector<int16_t>& samples);
-		void back_to_idle();
-		void draw_sprite_centered(const RenderData::Sprite& sprite, int32_t centerX, int32_t y);
-		const RenderData::Sprite get_current_tom_sprite() const;
-
-	public:
-		TomGameApp(
-			Core::FrameBuffer* frameBuffer,
-			Rasterizer::SpriteRasterizer* spriteRasterizer,
-			Platform::IAudioInput* audioInput,
-			Platform::IAudioOutput* audioOutput,
-			Platform::IButtonInput* buttonInput = nullptr);
-
-		void set_assets(const TomGameAssets& assets);
-		void configure_audio(uint32_t sampleRate = 16000, uint32_t channels = 1);
-		void update(float deltaTime, bool buttonPressed = false);
-		void draw();
-
-		bool is_ready() const;
-		bool is_button_hit(int32_t x, int32_t y) const;
-		TomGameState get_state() const { return state; }
-		float get_record_volume() const { return recorder.get_last_volume(); }
-		float get_play_progress() const { return player.get_progress(); }
-	};
-}
--- a/src/Apps/Game/src/audio/VoiceEffect.cpp
+++ b/src/Apps/Game/src/audio/VoiceEffect.cpp
@ -1,145 +0,0 @@
-#include "VoiceEffect.h"
-#include <algorithm>
-#include <cmath>
-
-namespace Game
-{
-	std::vector<int16_t> VoiceEffect::pitch_up(
-		const std::vector<int16_t>& samples,
-		float factor,
-		uint32_t channels)
-	{
-		return change_speed(samples, factor, channels);
-	}
-
-	std::vector<int16_t> VoiceEffect::change_speed(
-		const std::vector<int16_t>& samples,
-		float speed,
-		uint32_t channels)
-	{
-		if (samples.empty() || speed <= 0.0f || channels == 0)
-		{
-			return samples;
-		}
-
-		const size_t frameCount = samples.size() / channels;
-		if (frameCount == 0)
-		{
-			return std::vector<int16_t>();
-		}
-
-		const size_t outputFrameCount = std::max<size_t>(1, static_cast<size_t>(frameCount / speed));
-		std::vector<int16_t> output(outputFrameCount * channels, 0);
-
-		for (size_t outFrame = 0; outFrame < outputFrameCount; ++outFrame)
-		{
-			const float sourceFrame = static_cast<float>(outFrame) * speed;
-			const size_t source0 = std::min(static_cast<size_t>(sourceFrame), frameCount - 1);
-			const size_t source1 = std::min(source0 + 1, frameCount - 1);
-			const float t = sourceFrame - static_cast<float>(source0);
-
-			for (uint32_t channel = 0; channel < channels; ++channel)
-			{
-				const int16_t a = samples[source0 * channels + channel];
-				const int16_t b = samples[source1 * channels + channel];
-				const float mixed = static_cast<float>(a) + (static_cast<float>(b) - static_cast<float>(a)) * t;
-				output[outFrame * channels + channel] = clamp_to_sample(mixed);
-			}
-		}
-
-		return output;
-	}
-
-	std::vector<int16_t> VoiceEffect::amplify(const std::vector<int16_t>& samples, float gain)
-	{
-		if (samples.empty() || gain == 1.0f)
-		{
-			return samples;
-		}
-
-		std::vector<int16_t> output(samples.size(), 0);
-		for (size_t i = 0; i < samples.size(); ++i)
-		{
-			output[i] = clamp_to_sample(static_cast<float>(samples[i]) * gain);
-		}
-
-		return output;
-	}
-
-	std::vector<int16_t> VoiceEffect::trim_silence(
-		const std::vector<int16_t>& samples,
-		float threshold,
-		uint32_t channels)
-	{
-		if (samples.empty() || channels == 0)
-		{
-			return samples;
-		}
-
-		const size_t frameCount = samples.size() / channels;
-		size_t startFrame = 0;
-		size_t endFrame = frameCount;
-
-		while (startFrame < frameCount)
-		{
-			bool loud = false;
-			for (uint32_t channel = 0; channel < channels; ++channel)
-			{
-				if (sample_abs(samples[startFrame * channels + channel]) >= threshold)
-				{
-					loud = true;
-					break;
-				}
-			}
-
-			if (loud)
-			{
-				break;
-			}
-			++startFrame;
-		}
-
-		while (endFrame > startFrame)
-		{
-			bool loud = false;
-			const size_t frame = endFrame - 1;
-			for (uint32_t channel = 0; channel < channels; ++channel)
-			{
-				if (sample_abs(samples[frame * channels + channel]) >= threshold)
-				{
-					loud = true;
-					break;
-				}
-			}
-
-			if (loud)
-			{
-				break;
-			}
-			--endFrame;
-		}
-
-		const size_t startSample = startFrame * channels;
-		const size_t endSample = endFrame * channels;
-		return std::vector<int16_t>(samples.begin() + startSample, samples.begin() + endSample);
-	}
-
-	int16_t VoiceEffect::clamp_to_sample(float value)
-	{
-		if (value > 32767.0f)
-		{
-			return 32767;
-		}
-		if (value < -32768.0f)
-		{
-			return -32768;
-		}
-
-		return static_cast<int16_t>(value);
-	}
-
-	float VoiceEffect::sample_abs(int16_t sample)
-	{
-		return std::abs(static_cast<float>(sample) / 32768.0f);
-	}
-}
--- a/src/Apps/Game/src/audio/VoiceEffect.h
+++ b/src/Apps/Game/src/audio/VoiceEffect.h
@ -1,33 +0,0 @@
-#pragma once
-#include <cstdint>
-#include <vector>
-
-namespace Game
-{
-	class VoiceEffect
-	{
-	public:
-		static std::vector<int16_t> pitch_up(
-			const std::vector<int16_t>& samples,
-			float factor = 1.45f,
-			uint32_t channels = 1);
-
-		static std::vector<int16_t> change_speed(
-			const std::vector<int16_t>& samples,
-			float speed,
-			uint32_t channels = 1);
-
-		static std::vector<int16_t> amplify(
-			const std::vector<int16_t>& samples,
-			float gain);
-
-		static std::vector<int16_t> trim_silence(
-			const std::vector<int16_t>& samples,
-			float threshold = 0.02f,
-			uint32_t channels = 1);
-
-	private:
-		static int16_t clamp_to_sample(float value);
-		static float sample_abs(int16_t sample);
-	};
-}
--- a/src/Apps/Game/src/audio/VoicePlayer.cpp
+++ b/src/Apps/Game/src/audio/VoicePlayer.cpp
@ -1,154 +0,0 @@
-#include "VoicePlayer.h"
-#include <algorithm>
-
-namespace Game
-{
-	VoicePlayer::VoicePlayer() :
-		playPosition(0),
-		sampleRate(16000),
-		channels(1),
-		playing(false),
-		finished(false)
-	{}
-
-	void VoicePlayer::set_voice(const std::vector<int16_t>& samples, uint32_t sampleRate, uint32_t channels)
-	{
-		this->samples = samples;
-		this->sampleRate = sampleRate > 0 ? sampleRate : 16000;
-		this->channels = channels > 0 ? channels : 1;
-		reset();
-	}
-
-	void VoicePlayer::play()
-	{
-		if (samples.empty())
-		{
-			playing = false;
-			finished = true;
-			return;
-		}
-
-		if (playPosition >= samples.size())
-		{
-			playPosition = 0;
-		}
-
-		playing = true;
-		finished = false;
-	}
-
-	void VoicePlayer::stop()
-	{
-		playing = false;
-		finished = true;
-	}
-
-	void VoicePlayer::reset()
-	{
-		playPosition = 0;
-		playing = false;
-		finished = samples.empty();
-	}
-
-	void VoicePlayer::clear()
-	{
-		samples.clear();
-		playPosition = 0;
-		playing = false;
-		finished = false;
-	}
-
-	int VoicePlayer::update(Platform::IAudioOutput& audioOutput, int maxSamplesPerUpdate)
-	{
-		if (!playing || samples.empty())
-		{
-			return 0;
-		}
-
-		if (!audioOutput.is_open() ||
-			audioOutput.get_sample_rate() != sampleRate ||
-			audioOutput.get_channels() != channels)
-		{
-			if (!audioOutput.init(audioOutput.get_device_name(), sampleRate, channels))
-			{
-				stop();
-				return 0;
-			}
-		}
-
-		const size_t remaining = get_remaining_samples();
-		if (remaining == 0)
-		{
-			stop();
-			return 0;
-		}
-
-		int requestCount = get_aligned_sample_count(maxSamplesPerUpdate);
-		if (requestCount <= 0)
-		{
-			return 0;
-		}
-
-		requestCount = static_cast<int>(std::min<size_t>(static_cast<size_t>(requestCount), remaining));
-		requestCount = get_aligned_sample_count(requestCount);
-		if (requestCount <= 0)
-		{
-			stop();
-			return 0;
-		}
-
-		const int written = audioOutput.write_samples(samples.data() + playPosition, requestCount);
-		if (written <= 0)
-		{
-			return 0;
-		}
-
-		playPosition += static_cast<size_t>(written);
-		if (playPosition >= samples.size())
-		{
-			stop();
-		}
-
-		return written;
-	}
-
-	size_t VoicePlayer::get_remaining_samples() const
-	{
-		if (playPosition >= samples.size())
-		{
-			return 0;
-		}
-
-		return samples.size() - playPosition;
-	}
-
-	float VoicePlayer::get_duration_seconds() const
-	{
-		if (sampleRate == 0 || channels == 0)
-		{
-			return 0.0f;
-		}
-
-		return static_cast<float>(samples.size()) / static_cast<float>(sampleRate * channels);
-	}
-
-	float VoicePlayer::get_progress() const
-	{
-		if (samples.empty())
-		{
-			return 0.0f;
-		}
-
-		return static_cast<float>(playPosition) / static_cast<float>(samples.size());
-	}
-
-	int VoicePlayer::get_aligned_sample_count(int sampleCount) const
-	{
-		if (sampleCount <= 0 || channels == 0)
-		{
-			return 0;
-		}
-
-		return sampleCount - (sampleCount % static_cast<int>(channels));
-	}
-}
--- a/src/Apps/Game/src/audio/VoicePlayer.h
+++ b/src/Apps/Game/src/audio/VoicePlayer.h
@ -1,44 +0,0 @@
-#pragma once
-#include <cstddef>
-#include <cstdint>
-#include <vector>
-#include "AudioOutput.h"
-
-namespace Game
-{
-	class VoicePlayer
-	{
-	private:
-		std::vector<int16_t> samples;
-		size_t playPosition;
-		uint32_t sampleRate;
-		uint32_t channels;
-		bool playing;
-		bool finished;
-
-		int get_aligned_sample_count(int sampleCount) const;
-
-	public:
-		VoicePlayer();
-
-		void set_voice(const std::vector<int16_t>& samples, uint32_t sampleRate = 16000, uint32_t channels = 1);
-		void play();
-		void stop();
-		void reset();
-		void clear();
-		int update(Platform::IAudioOutput& audioOutput, int maxSamplesPerUpdate = 1024);
-
-		const std::vector<int16_t>& get_samples() const { return samples; }
-		size_t get_sample_count() const { return samples.size(); }
-		size_t get_play_position() const { return playPosition; }
-		size_t get_remaining_samples() const;
-		uint32_t get_sample_rate() const { return sampleRate; }
-		uint32_t get_channels() const { return channels; }
-		float get_duration_seconds() const;
-		float get_progress() const;
-
-		bool is_playing() const { return playing; }
-		bool is_finished() const { return finished; }
-		bool has_voice() const { return !samples.empty(); }
-	};
-}
--- a/src/Apps/Game/src/audio/VoiceRecorder.cpp
+++ b/src/Apps/Game/src/audio/VoiceRecorder.cpp
@ -1,170 +0,0 @@
-#include "VoiceRecorder.h"
-#include <algorithm>
-#include <cmath>
-#include <vector>
-
-namespace Game
-{
-	VoiceRecorder::VoiceRecorder() :
-		sampleRate(16000),
-		channels(1),
-		maxDurationSeconds(5.0f),
-		silenceThreshold(0.03f),
-		silenceDurationSeconds(0.8f),
-		minRecordSeconds(0.3f),
-		lastVolume(0.0f),
-		silentSampleCount(0),
-		recording(false),
-		finished(false),
-		finishedBySilence(false)
-	{}
-
-	void VoiceRecorder::configure(
-		uint32_t sampleRate,
-		uint32_t channels,
-		float maxDurationSeconds,
-		float silenceThreshold,
-		float silenceDurationSeconds,
-		float minRecordSeconds)
-	{
-		if (sampleRate > 0)
-		{
-			this->sampleRate = sampleRate;
-		}
-		if (channels > 0)
-		{
-			this->channels = channels;
-		}
-		if (maxDurationSeconds > 0.0f)
-		{
-			this->maxDurationSeconds = maxDurationSeconds;
-		}
-		if (silenceThreshold >= 0.0f)
-		{
-			this->silenceThreshold = silenceThreshold;
-		}
-		if (silenceDurationSeconds > 0.0f)
-		{
-			this->silenceDurationSeconds = silenceDurationSeconds;
-		}
-		if (minRecordSeconds >= 0.0f)
-		{
-			this->minRecordSeconds = minRecordSeconds;
-		}
-	}
-
-	void VoiceRecorder::start()
-	{
-		clear();
-		recording = true;
-		finished = false;
-		finishedBySilence = false;
-	}
-
-	void VoiceRecorder::stop()
-	{
-		recording = false;
-		finished = true;
-	}
-
-	void VoiceRecorder::clear()
-	{
-		samples.clear();
-		lastVolume = 0.0f;
-		silentSampleCount = 0;
-		recording = false;
-		finished = false;
-		finishedBySilence = false;
-	}
-
-	int VoiceRecorder::update(Platform::IAudioInput& audioInput, int sampleCount)
-	{
-		if (!recording || sampleCount <= 0)
-		{
-			return 0;
-		}
-
-		const size_t maxSampleCount = get_max_sample_count();
-		if (samples.size() >= maxSampleCount)
-		{
-			stop();
-			return 0;
-		}
-
-		const size_t remaining = maxSampleCount - samples.size();
-		const int requestCount = static_cast<int>(std::min<size_t>(static_cast<size_t>(sampleCount), remaining));
-		std::vector<int16_t> buffer(static_cast<size_t>(requestCount), 0);
-
-		const int readCount = audioInput.read_samples(buffer.data(), requestCount);
-		if (readCount <= 0)
-		{
-			return 0;
-		}
-
-		lastVolume = calculate_volume(buffer.data(), readCount);
-		samples.insert(samples.end(), buffer.begin(), buffer.begin() + readCount);
-
-		if (samples.size() >= get_min_sample_count() && lastVolume < silenceThreshold)
-		{
-			silentSampleCount += static_cast<size_t>(readCount);
-		}
-		else
-		{
-			silentSampleCount = 0;
-		}
-
-		if (silentSampleCount >= get_silence_sample_limit())
-		{
-			finishedBySilence = true;
-			stop();
-		}
-		else if (samples.size() >= maxSampleCount)
-		{
-			stop();
-		}
-
-		return readCount;
-	}
-
-	float VoiceRecorder::get_duration_seconds() const
-	{
-		if (sampleRate == 0 || channels == 0)
-		{
-			return 0.0f;
-		}
-
-		return static_cast<float>(samples.size()) / static_cast<float>(sampleRate * channels);
-	}
-
-	size_t VoiceRecorder::get_max_sample_count() const
-	{
-		return static_cast<size_t>(sampleRate * channels * maxDurationSeconds);
-	}
-
-	size_t VoiceRecorder::get_silence_sample_limit() const
-	{
-		return static_cast<size_t>(sampleRate * channels * silenceDurationSeconds);
-	}
-
-	size_t VoiceRecorder::get_min_sample_count() const
-	{
-		return static_cast<size_t>(sampleRate * channels * minRecordSeconds);
-	}
-
-	float VoiceRecorder::calculate_volume(const int16_t* buffer, int sampleCount) const
-	{
-		if (buffer == nullptr || sampleCount <= 0)
-		{
-			return 0.0f;
-		}
-
-		double sum = 0.0;
-		for (int i = 0; i < sampleCount; ++i)
-		{
-			const double value = static_cast<double>(buffer[i]) / 32768.0;
-			sum += value * value;
-		}
-
-		return static_cast<float>(std::sqrt(sum / sampleCount));
-	}
-}
--- a/src/Apps/Game/src/audio/VoiceRecorder.h
+++ b/src/Apps/Game/src/audio/VoiceRecorder.h
@ -1,58 +0,0 @@
-#pragma once
-#include <cstddef>
-#include <cstdint>
-#include <vector>
-#include "AudioInput.h"
-
-namespace Game
-{
-	class VoiceRecorder
-	{
-	private:
-		std::vector<int16_t> samples;
-		uint32_t sampleRate;
-		uint32_t channels;
-		float maxDurationSeconds;
-		float silenceThreshold;
-		float silenceDurationSeconds;
-		float minRecordSeconds;
-		float lastVolume;
-		size_t silentSampleCount;
-		bool recording;
-		bool finished;
-		bool finishedBySilence;
-
-		size_t get_max_sample_count() const;
-		size_t get_silence_sample_limit() const;
-		size_t get_min_sample_count() const;
-		float calculate_volume(const int16_t* buffer, int sampleCount) const;
-
-	public:
-		VoiceRecorder();
-
-		void configure(
-			uint32_t sampleRate,
-			uint32_t channels,
-			float maxDurationSeconds = 5.0f,
-			float silenceThreshold = 0.03f,
-			float silenceDurationSeconds = 0.8f,
-			float minRecordSeconds = 0.3f);
-
-		void start();
-		void stop();
-		void clear();
-		int update(Platform::IAudioInput& audioInput, int sampleCount = 512);
-
-		const std::vector<int16_t>& get_samples() const { return samples; }
-		size_t get_sample_count() const { return samples.size(); }
-		uint32_t get_sample_rate() const { return sampleRate; }
-		uint32_t get_channels() const { return channels; }
-		float get_duration_seconds() const;
-		float get_last_volume() const { return lastVolume; }
-
-		bool is_recording() const { return recording; }
-		bool is_finished() const { return finished; }
-		bool is_finished_by_silence() const { return finishedBySilence; }
-		bool has_samples() const { return !samples.empty(); }
-	};
-}
--- a/src/Apps/Game/src/components/.gitkeep
+++ b/src/Apps/Game/src/components/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/src/components/SpriteAnimator.cpp
+++ b/src/Apps/Game/src/components/SpriteAnimator.cpp
@ -1,101 +0,0 @@
-#include "SpriteAnimator.h"
-
-namespace Game
-{
-	SpriteAnimator::SpriteAnimator() :
-		currentFrame(0),
-		frameTime(0.1f),
-		timer(0.0f),
-		loop(true),
-		playing(true)
-	{}
-
-	SpriteAnimator::SpriteAnimator(const std::vector<RenderData::Sprite>& frames, float frameTime, bool loop) :
-		frames(frames),
-		currentFrame(0),
-		frameTime(frameTime > 0.0f ? frameTime : 0.1f),
-		timer(0.0f),
-		loop(loop),
-		playing(!frames.empty())
-	{}
-
-	void SpriteAnimator::set_frames(const std::vector<RenderData::Sprite>& frames)
-	{
-		this->frames = frames;
-		reset();
-	}
-
-	void SpriteAnimator::set_frame_time(float frameTime)
-	{
-		if (frameTime > 0.0f)
-		{
-			this->frameTime = frameTime;
-		}
-	}
-
-	void SpriteAnimator::set_loop(bool loop)
-	{
-		this->loop = loop;
-	}
-
-	void SpriteAnimator::play()
-	{
-		playing = !frames.empty();
-	}
-
-	void SpriteAnimator::stop()
-	{
-		playing = false;
-	}
-
-	void SpriteAnimator::reset()
-	{
-		currentFrame = 0;
-		timer = 0.0f;
-		playing = !frames.empty();
-	}
-
-	void SpriteAnimator::update(float deltaTime)
-	{
-		if (!playing || frames.empty() || frameTime <= 0.0f)
-		{
-			return;
-		}
-
-		timer += deltaTime;
-		while (timer >= frameTime)
-		{
-			timer -= frameTime;
-
-			if (currentFrame + 1 < frames.size())
-			{
-				++currentFrame;
-			}
-			else if (loop)
-			{
-				currentFrame = 0;
-			}
-			else
-			{
-				playing = false;
-				currentFrame = frames.size() - 1;
-				break;
-			}
-		}
-	}
-
-	const RenderData::Sprite* SpriteAnimator::get_current_sprite() const
-	{
-		if (frames.empty() || currentFrame >= frames.size())
-		{
-			return nullptr;
-		}
-
-		return &frames[currentFrame];
-	}
-
-	bool SpriteAnimator::is_finished() const
-	{
-		return !loop && !playing && !frames.empty() && currentFrame == frames.size() - 1;
-	}
-}
--- a/src/Apps/Game/src/components/SpriteAnimator.h
+++ b/src/Apps/Game/src/components/SpriteAnimator.h
@ -1,37 +0,0 @@
-#pragma once
-#include <cstddef>
-#include <vector>
-#include "Sprite.h"
-
-namespace Game
-{
-	class SpriteAnimator
-	{
-	private:
-		std::vector<RenderData::Sprite> frames;
-		size_t currentFrame;
-		float frameTime;
-		float timer;
-		bool loop;
-		bool playing;
-
-	public:
-		SpriteAnimator();
-		SpriteAnimator(const std::vector<RenderData::Sprite>& frames, float frameTime, bool loop = true);
-
-		void set_frames(const std::vector<RenderData::Sprite>& frames);
-		void set_frame_time(float frameTime);
-		void set_loop(bool loop);
-
-		void play();
-		void stop();
-		void reset();
-		void update(float deltaTime);
-
-		const RenderData::Sprite* get_current_sprite() const;
-		size_t get_current_frame() const { return currentFrame; }
-		size_t get_frame_count() const { return frames.size(); }
-		bool is_playing() const { return playing; }
-		bool is_finished() const;
-	};
-}
--- a/src/Apps/Game/src/scenes/.gitkeep
+++ b/src/Apps/Game/src/scenes/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/src/scenes/TomScene.cpp
+++ b/src/Apps/Game/src/scenes/TomScene.cpp
--- a/src/Apps/Game/src/scenes/TomScene.h
+++ b/src/Apps/Game/src/scenes/TomScene.h
--- a/src/Apps/Game/src/systems/.gitkeep
+++ b/src/Apps/Game/src/systems/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/src/systems/AnimationSystem.cpp
+++ b/src/Apps/Game/src/systems/AnimationSystem.cpp
@ -1,98 +0,0 @@
-#include "AnimationSystem.h"
-#include "SpriteRasterizer.h"
-
-namespace Game
-{
-	size_t AnimationSystem::add(SpriteAnimator* animator, int32_t x, int32_t y)
-	{
-		objects.push_back(AnimationObject(animator, x, y));
-		return objects.size() - 1;
-	}
-
-	void AnimationSystem::remove(size_t index)
-	{
-		if (index >= objects.size())
-		{
-			return;
-		}
-
-		objects.erase(objects.begin() + index);
-	}
-
-	void AnimationSystem::clear()
-	{
-		objects.clear();
-	}
-
-	void AnimationSystem::update(float deltaTime)
-	{
-		for (size_t i = 0; i < objects.size(); ++i)
-		{
-			if (objects[i].animator != nullptr)
-			{
-				objects[i].animator->update(deltaTime);
-			}
-		}
-	}
-
-	void AnimationSystem::draw(Rasterizer::SpriteRasterizer& spriteRasterizer) const
-	{
-		for (size_t i = 0; i < objects.size(); ++i)
-		{
-			const AnimationObject& object = objects[i];
-			if (!object.visible || object.animator == nullptr)
-			{
-				continue;
-			}
-
-			const RenderData::Sprite* sprite = object.animator->get_current_sprite();
-			if (sprite != nullptr)
-			{
-				spriteRasterizer.DrawSprite(*sprite, object.x, object.y);
-			}
-		}
-	}
-
-	void AnimationSystem::set_position(size_t index, int32_t x, int32_t y)
-	{
-		AnimationObject* object = get_object(index);
-		if (object == nullptr)
-		{
-			return;
-		}
-
-		object->x = x;
-		object->y = y;
-	}
-
-	void AnimationSystem::set_visible(size_t index, bool visible)
-	{
-		AnimationObject* object = get_object(index);
-		if (object == nullptr)
-		{
-			return;
-		}
-
-		object->visible = visible;
-	}
-
-	AnimationObject* AnimationSystem::get_object(size_t index)
-	{
-		if (index >= objects.size())
-		{
-			return nullptr;
-		}
-
-		return &objects[index];
-	}
-
-	const AnimationObject* AnimationSystem::get_object(size_t index) const
-	{
-		if (index >= objects.size())
-		{
-			return nullptr;
-		}
-
-		return &objects[index];
-	}
-}
--- a/src/Apps/Game/src/systems/AnimationSystem.h
+++ b/src/Apps/Game/src/systems/AnimationSystem.h
@ -1,50 +0,0 @@
-#pragma once
-#include <cstddef>
-#include <cstdint>
-#include <vector>
-#include "../components/SpriteAnimator.h"
-
-namespace Rasterizer
-{
-	class SpriteRasterizer;
-}
-
-namespace Game
-{
-	struct AnimationObject
-	{
-		SpriteAnimator* animator;
-		int32_t x;
-		int32_t y;
-		bool visible;
-
-		AnimationObject() : animator(nullptr), x(0), y(0), visible(true) {}
-		AnimationObject(SpriteAnimator* animator, int32_t x, int32_t y) :
-			animator(animator),
-			x(x),
-			y(y),
-			visible(true)
-		{}
-	};
-
-	class AnimationSystem
-	{
-	private:
-		std::vector<AnimationObject> objects;
-
-	public:
-		size_t add(SpriteAnimator* animator, int32_t x, int32_t y);
-		void remove(size_t index);
-		void clear();
-
-		void update(float deltaTime);
-		void draw(Rasterizer::SpriteRasterizer& spriteRasterizer) const;
-
-		void set_position(size_t index, int32_t x, int32_t y);
-		void set_visible(size_t index, bool visible);
-
-		AnimationObject* get_object(size_t index);
-		const AnimationObject* get_object(size_t index) const;
-		size_t count() const { return objects.size(); }
-	};
-}
--- a/src/Apps/Game/tests/fixtures/.gitkeep
+++ b/src/Apps/Game/tests/fixtures/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/tests/manual/SpriteAnimationTest.cpp
+++ b/src/Apps/Game/tests/manual/SpriteAnimationTest.cpp
@ -1,234 +0,0 @@
-#include <SDL.h>
-#include <algorithm>
-#include <cstdint>
-#include <fstream>
-#include <iostream>
-#include <string>
-#include <vector>
-
-#include "FrameBuffer.h"
-#include "SDLDisplay.h"
-#include "SpriteAssetLoader.h"
-#include "SpriteRasterizer.h"
-#include "Image.h"
-#include "Sprite.h"
-#include "SpriteAnimator.h"
-#include "AnimationSystem.h"
-
-static std::string FindAssetPath(const std::string& fileName)
-{
-	const char* roots[] = {
-		"src/Apps/Game/assets/sprites/",
-		"../src/Apps/Game/assets/sprites/",
-		"../../src/Apps/Game/assets/sprites/",
-		"../../../src/Apps/Game/assets/sprites/"
-	};
-
-	for (size_t i = 0; i < sizeof(roots) / sizeof(roots[0]); ++i)
-	{
-		const std::string path = std::string(roots[i]) + fileName;
-		std::ifstream file(path.c_str(), std::ios::binary);
-		if (file.good())
-		{
-			return path;
-		}
-	}
-
-	return std::string("src/Apps/Game/assets/sprites/") + fileName;
-}
-
-static bool LoadSpriteImage(const std::string& fileName, RenderData::Image& image)
-{
-	const std::string path = FindAssetPath(fileName);
-	if (!Asset::SpriteAssetLoader::Load(path, image))
-	{
-		std::cerr << "Load sprite failed: " << path << std::endl;
-		return false;
-	}
-
-	return true;
-}
-
-static RenderData::Image ResizeImageNearest(const RenderData::Image& source, int32_t width, int32_t height)
-{
-	if (!source.is_valid() || width <= 0 || height <= 0)
-	{
-		return RenderData::Image();
-	}
-
-	RenderData::Image result(width, height);
-	for (int32_t y = 0; y < height; ++y)
-	{
-		const int32_t sourceY = y * source.get_height() / height;
-		for (int32_t x = 0; x < width; ++x)
-		{
-			const int32_t sourceX = x * source.get_width() / width;
-			result.set_pixel(x, y, source.get_pixel_fast(sourceX, sourceY));
-		}
-	}
-
-	return result;
-}
-
-static RenderData::Image ResizeImageToFit(const RenderData::Image& source, int32_t maxWidth, int32_t maxHeight)
-{
-	if (!source.is_valid() || maxWidth <= 0 || maxHeight <= 0)
-	{
-		return RenderData::Image();
-	}
-
-	const float scaleX = static_cast<float>(maxWidth) / source.get_width();
-	const float scaleY = static_cast<float>(maxHeight) / source.get_height();
-	const float scale = std::min(scaleX, scaleY);
-
-	const int32_t width = std::max(1, static_cast<int32_t>(source.get_width() * scale));
-	const int32_t height = std::max(1, static_cast<int32_t>(source.get_height() * scale));
-	return ResizeImageNearest(source, width, height);
-}
-
-static bool LoadFrames(
-	const std::vector<std::string>& fileNames,
-	std::vector<RenderData::Image>& images,
-	std::vector<RenderData::Sprite>& frames,
-	int32_t maxFrameWidth,
-	int32_t maxFrameHeight)
-{
-	images.clear();
-	frames.clear();
-	images.reserve(fileNames.size());
-
-	for (size_t i = 0; i < fileNames.size(); ++i)
-	{
-		RenderData::Image image;
-		if (!LoadSpriteImage(fileNames[i], image))
-		{
-			return false;
-		}
-
-		images.push_back(ResizeImageToFit(image, maxFrameWidth, maxFrameHeight));
-	}
-
-	frames.reserve(images.size());
-	for (size_t i = 0; i < images.size(); ++i)
-	{
-		frames.push_back(RenderData::Sprite(&images[i]));
-	}
-
-	return !frames.empty();
-}
-
-int main(int argc, char* argv[])
-{
-	(void)argc;
-	(void)argv;
-
-	const int32_t width = 800;
-	const int32_t height = 480;
-
-	Platform::SDLDisplay display;
-	if (!display.init(width, height))
-	{
-		return -1;
-	}
-
-	RenderData::Image originalBackground;
-	if (!LoadSpriteImage("background.sprite", originalBackground))
-	{
-		display.shutdown();
-		return -1;
-	}
-	RenderData::Image background = ResizeImageNearest(originalBackground, width, height);
-
-	std::vector<std::string> frameFiles;
-	frameFiles.push_back("Tom-stand.sprite");
-	frameFiles.push_back("Tom-listhen.sprite");
-	frameFiles.push_back("Tom-openmouse1.sprite");
-	frameFiles.push_back("Tom-openmouse2.sprite");
-	frameFiles.push_back("Tom-say1.sprite");
-	frameFiles.push_back("Tom-say2.sprite");
-	frameFiles.push_back("Tom-say3.sprite");
-	frameFiles.push_back("Tom-say4.sprite");
-
-	std::vector<RenderData::Image> frameImages;
-	std::vector<RenderData::Sprite> frames;
-	if (!LoadFrames(frameFiles, frameImages, frames, width * 7 / 10, height * 9 / 10))
-	{
-		display.shutdown();
-		return -1;
-	}
-
-	Core::FrameBuffer frameBuffer(width, height);
-	Rasterizer::SpriteRasterizer spriteRasterizer(&frameBuffer);
-
-	Game::SpriteAnimator tomAnimator(frames, 0.12f, true);
-	Game::AnimationSystem animationSystem;
-
-	const RenderData::Sprite* firstFrame = tomAnimator.get_current_sprite();
-	const int32_t tomX = firstFrame ? (width - firstFrame->width) / 2 : 0;
-	const int32_t tomY = firstFrame ? height - firstFrame->height - 20 : 0;
-	animationSystem.add(&tomAnimator, tomX, tomY);
-
-	std::cout << "Sprite animation test" << std::endl;
-	std::cout << "Space: play/pause, R: reset, Esc: quit" << std::endl;
-	std::cout << "Background: " << originalBackground.get_width() << "x" << originalBackground.get_height()
-		<< " -> " << background.get_width() << "x" << background.get_height() << std::endl;
-	std::cout << "Tom frame 0: " << frameImages[0].get_width() << "x" << frameImages[0].get_height() << std::endl;
-
-	bool shouldQuit = false;
-	uint32_t lastTime = display.get_time_ms();
-	while (!shouldQuit)
-	{
-		SDL_Event event;
-		while (SDL_PollEvent(&event))
-		{
-			if (event.type == SDL_QUIT)
-			{
-				shouldQuit = true;
-			}
-			else if (event.type == SDL_KEYDOWN)
-			{
-				if (event.key.repeat != 0)
-				{
-					continue;
-				}
-
-				if (event.key.keysym.sym == SDLK_ESCAPE)
-				{
-					shouldQuit = true;
-				}
-				else if (event.key.keysym.sym == SDLK_SPACE)
-				{
-					if (tomAnimator.is_playing())
-					{
-						tomAnimator.stop();
-					}
-					else
-					{
-						tomAnimator.play();
-					}
-				}
-				else if (event.key.keysym.sym == SDLK_r)
-				{
-					tomAnimator.reset();
-					tomAnimator.play();
-				}
-			}
-		}
-
-		const uint32_t currentTime = display.get_time_ms();
-		const float deltaTime = static_cast<float>(currentTime - lastTime) * 0.001f;
-		lastTime = currentTime;
-
-		animationSystem.update(deltaTime);
-
-		frameBuffer.clear(RenderData::Color(18, 18, 24, 255));
-		spriteRasterizer.DrawImage(background, 0, 0);
-		animationSystem.draw(spriteRasterizer);
-		display.present(&frameBuffer);
-
-		SDL_Delay(16);
-	}
-
-	display.shutdown();
-	return 0;
-}
--- a/src/Apps/Game/tests/unit/.gitkeep
+++ b/src/Apps/Game/tests/unit/.gitkeep
@ -1 +0,0 @@
-
--- a/src/Apps/Game/tools/asset_pipeline/SpriteAssetTool.cpp
+++ b/src/Apps/Game/tools/asset_pipeline/SpriteAssetTool.cpp
@ -1,601 +0,0 @@
-#include <SDL.h>
-#include <SDL_image.h>
-#include <algorithm>
-#include <cerrno>
-#include <cctype>
-#include <climits>
-#include <cstdint>
-#include <cstdlib>
-#include <iostream>
-#include <string>
-#include <vector>
-#include "Image.h"
-#include "SpriteAssetLoader.h"
-
-#if defined(_WIN32)
-#define WIN32_LEAN_AND_MEAN
-#define NOMINMAX
-#include <windows.h>
-#else
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#endif
-
-namespace
-{
-	enum class TransformMode
-	{
-		None,
-		Resize,
-		Fit,
-		Tom800x480Preset
-	};
-
-	struct TransformOptions
-	{
-		TransformMode mode;
-		int32_t width;
-		int32_t height;
-
-		TransformOptions() : mode(TransformMode::None), width(0), height(0) {}
-	};
-
-	struct LoadedImage
-	{
-		std::vector<uint32_t> pixels;
-		RenderData::Image image;
-
-		void assign(int32_t width, int32_t height, const std::vector<uint32_t>& sourcePixels)
-		{
-			pixels = sourcePixels;
-			image = RenderData::Image(pixels.empty() ? nullptr : pixels.data(), width, height);
-		}
-
-		bool is_valid() const
-		{
-			return image.pixels != nullptr && image.width > 0 && image.height > 0;
-		}
-	};
-
-	static bool IsPathSeparator(char value)
-	{
-		return value == '/' || value == '\\';
-	}
-
-	static std::string ToLower(std::string text)
-	{
-		std::transform(text.begin(), text.end(), text.begin(), [](char value) {
-			return static_cast<char>(std::tolower(static_cast<unsigned char>(value)));
-		});
-		return text;
-	}
-
-	static std::string JoinPath(const std::string& directory, const std::string& fileName)
-	{
-		if (directory.empty())
-		{
-			return fileName;
-		}
-
-		if (IsPathSeparator(directory[directory.size() - 1]))
-		{
-			return directory + fileName;
-		}
-
-		return directory + "/" + fileName;
-	}
-
-	static std::string GetFileName(const std::string& path)
-	{
-		const size_t slash = path.find_last_of("/\\");
-		if (slash == std::string::npos)
-		{
-			return path;
-		}
-
-		return path.substr(slash + 1);
-	}
-
-	static std::string GetParentPath(const std::string& path)
-	{
-		const size_t slash = path.find_last_of("/\\");
-		if (slash == std::string::npos)
-		{
-			return std::string();
-		}
-		if (slash == 0)
-		{
-			return path.substr(0, 1);
-		}
-
-		return path.substr(0, slash);
-	}
-
-	static std::string ChangeExtensionToSprite(const std::string& fileName)
-	{
-		const size_t slash = fileName.find_last_of("/\\");
-		const size_t dot = fileName.find_last_of('.');
-		if (dot != std::string::npos && (slash == std::string::npos || dot > slash))
-		{
-			return fileName.substr(0, dot) + Asset::SpriteAssetLoader::GetFileExtension();
-		}
-
-		return fileName + Asset::SpriteAssetLoader::GetFileExtension();
-	}
-
-	static bool HasPngExtension(const std::string& path)
-	{
-		const std::string lower = ToLower(path);
-		return lower.size() >= 4 && lower.substr(lower.size() - 4) == ".png";
-	}
-
-	static bool ParsePositiveInt(const char* text, int32_t& value)
-	{
-		if (text == nullptr || text[0] == '\0')
-		{
-			return false;
-		}
-
-		errno = 0;
-		char* end = nullptr;
-		const long parsed = std::strtol(text, &end, 10);
-		if (errno != 0 || end == text || *end != '\0' || parsed <= 0 || parsed > INT_MAX)
-		{
-			return false;
-		}
-
-		value = static_cast<int32_t>(parsed);
-		return true;
-	}
-
-	static bool DirectoryExists(const std::string& path)
-	{
-#if defined(_WIN32)
-		const DWORD attrs = GetFileAttributesA(path.c_str());
-		return attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY) != 0;
-#else
-		struct stat info;
-		return stat(path.c_str(), &info) == 0 && S_ISDIR(info.st_mode);
-#endif
-	}
-
-	static bool CreateSingleDirectory(const std::string& path)
-	{
-		if (path.empty() || DirectoryExists(path))
-		{
-			return true;
-		}
-
-#if defined(_WIN32)
-		if (CreateDirectoryA(path.c_str(), nullptr) != 0)
-		{
-			return true;
-		}
-		return GetLastError() == ERROR_ALREADY_EXISTS && DirectoryExists(path);
-#else
-		if (mkdir(path.c_str(), 0755) == 0)
-		{
-			return true;
-		}
-		return errno == EEXIST && DirectoryExists(path);
-#endif
-	}
-
-	static bool EnsureDirectoryTree(const std::string& path)
-	{
-		if (path.empty())
-		{
-			return true;
-		}
-
-		std::string normalized = path;
-		while (!normalized.empty() && IsPathSeparator(normalized[normalized.size() - 1]))
-		{
-			normalized.erase(normalized.size() - 1);
-		}
-
-		if (normalized.empty())
-		{
-			return true;
-		}
-
-		size_t start = 0;
-		if (normalized.size() >= 2 && normalized[1] == ':')
-		{
-			start = 2;
-		}
-		if (start < normalized.size() && IsPathSeparator(normalized[start]))
-		{
-			++start;
-		}
-
-		for (size_t i = start; i <= normalized.size(); ++i)
-		{
-			if (i != normalized.size() && !IsPathSeparator(normalized[i]))
-			{
-				continue;
-			}
-
-			const std::string part = normalized.substr(0, i);
-			if (part.empty() || (part.size() == 2 && part[1] == ':'))
-			{
-				continue;
-			}
-
-			if (!CreateSingleDirectory(part))
-			{
-				std::cerr << "Create directory failed: " << part << std::endl;
-				return false;
-			}
-		}
-
-		return DirectoryExists(normalized);
-	}
-
-	static bool EnsureParentDirectory(const std::string& path)
-	{
-		return EnsureDirectoryTree(GetParentPath(path));
-	}
-
-	static bool ListPngFiles(const std::string& directory, std::vector<std::string>& fileNames)
-	{
-		fileNames.clear();
-
-#if defined(_WIN32)
-		const std::string searchPath = JoinPath(directory, "*");
-		WIN32_FIND_DATAA data;
-		HANDLE handle = FindFirstFileA(searchPath.c_str(), &data);
-		if (handle == INVALID_HANDLE_VALUE)
-		{
-			return false;
-		}
-
-		do
-		{
-			if ((data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0 &&
-				HasPngExtension(data.cFileName))
-			{
-				fileNames.push_back(data.cFileName);
-			}
-		}
-		while (FindNextFileA(handle, &data) != 0);
-
-		FindClose(handle);
-#else
-		DIR* dir = opendir(directory.c_str());
-		if (dir == nullptr)
-		{
-			return false;
-		}
-
-		dirent* entry = nullptr;
-		while ((entry = readdir(dir)) != nullptr)
-		{
-			const std::string name = entry->d_name;
-			if (name == "." || name == ".." || !HasPngExtension(name))
-			{
-				continue;
-			}
-
-			fileNames.push_back(name);
-		}
-
-		closedir(dir);
-#endif
-
-		std::sort(fileNames.begin(), fileNames.end(), [](const std::string& left, const std::string& right) {
-			return ToLower(left) < ToLower(right);
-		});
-		return true;
-	}
-}
-
-static bool LoadPngImage(const std::string& path, LoadedImage& image)
-{
-	SDL_Surface* loadedSurface = IMG_Load(path.c_str());
-	if (loadedSurface == nullptr)
-	{
-		std::cerr << "IMG_Load failed: " << path << " : " << IMG_GetError() << std::endl;
-		return false;
-	}
-
-	SDL_Surface* rgbaSurface = SDL_ConvertSurfaceFormat(loadedSurface, SDL_PIXELFORMAT_RGBA8888, 0);
-	SDL_FreeSurface(loadedSurface);
-	if (rgbaSurface == nullptr)
-	{
-		std::cerr << "SDL_ConvertSurfaceFormat failed: " << SDL_GetError() << std::endl;
-		return false;
-	}
-
-	std::vector<uint32_t> pixels(static_cast<size_t>(rgbaSurface->w) * static_cast<size_t>(rgbaSurface->h), 0);
-	if (SDL_LockSurface(rgbaSurface) != 0)
-	{
-		std::cerr << "SDL_LockSurface failed: " << SDL_GetError() << std::endl;
-		SDL_FreeSurface(rgbaSurface);
-		return false;
-	}
-
-	for (int32_t y = 0; y < rgbaSurface->h; ++y)
-	{
-		const uint8_t* srcRow = static_cast<const uint8_t*>(rgbaSurface->pixels) + y * rgbaSurface->pitch;
-		const uint32_t* srcPixels = reinterpret_cast<const uint32_t*>(srcRow);
-		for (int32_t x = 0; x < rgbaSurface->w; ++x)
-		{
-			pixels[static_cast<size_t>(y) * rgbaSurface->w + x] = srcPixels[x];
-		}
-	}
-	SDL_UnlockSurface(rgbaSurface);
-
-	image.assign(rgbaSurface->w, rgbaSurface->h, pixels);
-	SDL_FreeSurface(rgbaSurface);
-	return image.is_valid();
-}
-
-static LoadedImage ResizeImageNearest(const LoadedImage& source, int32_t width, int32_t height)
-{
-	if (!source.is_valid() || width <= 0 || height <= 0)
-	{
-		return LoadedImage();
-	}
-
-	std::vector<uint32_t> pixels(static_cast<size_t>(width) * static_cast<size_t>(height), 0);
-	for (int32_t y = 0; y < height; ++y)
-	{
-		const int32_t sourceY = y * source.image.height / height;
-		for (int32_t x = 0; x < width; ++x)
-		{
-			const int32_t sourceX = x * source.image.width / width;
-			pixels[static_cast<size_t>(y) * static_cast<size_t>(width) + static_cast<size_t>(x)] =
-				source.image.pixels[static_cast<size_t>(sourceY) * static_cast<size_t>(source.image.width) + static_cast<size_t>(sourceX)];
-		}
-	}
-
-	LoadedImage result;
-	result.assign(width, height, pixels);
-	return result;
-}
-
-static LoadedImage ResizeImageToFit(const LoadedImage& source, int32_t maxWidth, int32_t maxHeight)
-{
-	if (!source.is_valid() || maxWidth <= 0 || maxHeight <= 0)
-	{
-		return LoadedImage();
-	}
-
-	const float scaleX = static_cast<float>(maxWidth) / source.image.width;
-	const float scaleY = static_cast<float>(maxHeight) / source.image.height;
-	const float scale = std::min(scaleX, scaleY);
-
-	const int32_t width = std::max(1, static_cast<int32_t>(source.image.width * scale));
-	const int32_t height = std::max(1, static_cast<int32_t>(source.image.height * scale));
-	return ResizeImageNearest(source, width, height);
-}
-
-static TransformOptions ResolveTransformForInput(
-	const std::string& inputPath,
-	const TransformOptions& requested)
-{
-	if (requested.mode != TransformMode::Tom800x480Preset)
-	{
-		return requested;
-	}
-
-	TransformOptions resolved;
-	const std::string fileName = ToLower(GetFileName(inputPath));
-	if (fileName == "background.png")
-	{
-		resolved.mode = TransformMode::Resize;
-		resolved.width = 800;
-		resolved.height = 480;
-	}
-	else if (fileName.find("tom-") == 0)
-	{
-		resolved.mode = TransformMode::Fit;
-		resolved.width = 560;
-		resolved.height = 360;
-	}
-	else if (fileName.find("ui-") == 0)
-	{
-		resolved.mode = TransformMode::Fit;
-		resolved.width = 72;
-		resolved.height = 72;
-	}
-
-	return resolved;
-}
-
-static bool ApplyTransform(const std::string& inputPath, const TransformOptions& options, LoadedImage& image)
-{
-	const TransformOptions resolved = ResolveTransformForInput(inputPath, options);
-	switch (resolved.mode)
-	{
-	case TransformMode::None:
-		return image.is_valid();
-
-	case TransformMode::Resize:
-		image = ResizeImageNearest(image, resolved.width, resolved.height);
-		return image.is_valid();
-
-	case TransformMode::Fit:
-		image = ResizeImageToFit(image, resolved.width, resolved.height);
-		return image.is_valid();
-
-	case TransformMode::Tom800x480Preset:
-		return false;
-	}
-
-	return false;
-}
-
-static bool ConvertFile(
-	const std::string& inputPath,
-	const std::string& outputPath,
-	const TransformOptions& transformOptions)
-{
-	LoadedImage image;
-	if (!LoadPngImage(inputPath, image))
-	{
-		return false;
-	}
-
-	if (!ApplyTransform(inputPath, transformOptions, image))
-	{
-		std::cerr << "Image transform failed: " << inputPath << std::endl;
-		return false;
-	}
-
-	if (!EnsureParentDirectory(outputPath))
-	{
-		return false;
-	}
-
-	if (!Asset::SpriteAssetLoader::Save(outputPath, image.image))
-	{
-		std::cerr << "Save failed: " << outputPath << std::endl;
-		return false;
-	}
-
-	std::cout << inputPath << " -> " << outputPath
-		<< " (" << image.image.width << "x" << image.image.height << ")" << std::endl;
-	return true;
-}
-
-static bool ConvertBatch(
-	const std::string& inputDirectory,
-	const std::string& outputDirectory,
-	const TransformOptions& transformOptions)
-{
-	std::vector<std::string> files;
-	if (!ListPngFiles(inputDirectory, files) || files.empty())
-	{
-		std::cerr << "No PNG files found: " << inputDirectory << std::endl;
-		return false;
-	}
-
-	if (!EnsureDirectoryTree(outputDirectory))
-	{
-		return false;
-	}
-
-	size_t successCount = 0;
-	for (size_t i = 0; i < files.size(); ++i)
-	{
-		const std::string inputPath = JoinPath(inputDirectory, files[i]);
-		const std::string outputPath = JoinPath(outputDirectory, ChangeExtensionToSprite(files[i]));
-		if (ConvertFile(inputPath, outputPath, transformOptions))
-		{
-			++successCount;
-		}
-	}
-
-	std::cout << "Converted " << successCount << " / " << files.size() << " PNG files." << std::endl;
-	return successCount == files.size();
-}
-
-static bool ParseTransformOptions(int argc, char* argv[], int startIndex, TransformOptions& options)
-{
-	if (startIndex >= argc)
-	{
-		options = TransformOptions();
-		return true;
-	}
-
-	const std::string mode = argv[startIndex];
-	if (mode == "--resize" || mode == "--fit")
-	{
-		if (startIndex + 2 >= argc)
-		{
-			return false;
-		}
-
-		int32_t width = 0;
-		int32_t height = 0;
-		if (!ParsePositiveInt(argv[startIndex + 1], width) ||
-			!ParsePositiveInt(argv[startIndex + 2], height) ||
-			startIndex + 3 != argc)
-		{
-			return false;
-		}
-
-		options.mode = mode == "--resize" ? TransformMode::Resize : TransformMode::Fit;
-		options.width = width;
-		options.height = height;
-		return true;
-	}
-
-	if (mode == "--preset")
-	{
-		if (startIndex + 2 != argc)
-		{
-			return false;
-		}
-
-		const std::string presetName = argv[startIndex + 1];
-		if (presetName != "tom-800x480")
-		{
-			std::cerr << "Unknown preset: " << presetName << std::endl;
-			return false;
-		}
-
-		options.mode = TransformMode::Tom800x480Preset;
-		return true;
-	}
-
-	return false;
-}
-
-static void PrintUsage()
-{
-	std::cout << "Usage:" << std::endl;
-	std::cout << "  SpriteAssetTool input.png output.sprite [--resize width height]" << std::endl;
-	std::cout << "  SpriteAssetTool input.png output.sprite [--fit maxWidth maxHeight]" << std::endl;
-	std::cout << "  SpriteAssetTool --batch inputDir outputDir [--resize width height]" << std::endl;
-	std::cout << "  SpriteAssetTool --batch inputDir outputDir [--fit maxWidth maxHeight]" << std::endl;
-	std::cout << "  SpriteAssetTool --batch src/Apps/Game/assets/raw src/Apps/Game/assets/sprites --preset tom-800x480" << std::endl;
-}
-
-int main(int argc, char* argv[])
-{
-	if (argc < 3)
-	{
-		PrintUsage();
-		return 1;
-	}
-
-	const int imageFlags = IMG_INIT_PNG;
-	if ((IMG_Init(imageFlags) & imageFlags) != imageFlags)
-	{
-		std::cerr << "IMG_Init failed: " << IMG_GetError() << std::endl;
-		return 1;
-	}
-
-	TransformOptions transformOptions;
-	bool ok = false;
-	const std::string command = argv[1];
-	if (command == "--batch")
-	{
-		if (argc < 4 || !ParseTransformOptions(argc, argv, 4, transformOptions))
-		{
-			PrintUsage();
-			IMG_Quit();
-			return 1;
-		}
-
-		ok = ConvertBatch(argv[2], argv[3], transformOptions);
-	}
-	else
-	{
-		if (!ParseTransformOptions(argc, argv, 3, transformOptions))
-		{
-			PrintUsage();
-			IMG_Quit();
-			return 1;
-		}
-
-		ok = ConvertFile(argv[1], argv[2], transformOptions);
-	}
-
-	IMG_Quit();
-	return ok ? 0 : 1;
-}
--- a/src/Asset/SpriteAssetLoader.cpp
+++ b/src/Asset/SpriteAssetLoader.cpp
@ -1,180 +0,0 @@
-#include "SpriteAssetLoader.h"
-#include <cstdint>
-#include <fstream>
-#include <limits>
-#include <vector>
-
-namespace
-{
-	static const char SpriteMagic[4] = { 'S', 'P', 'R', 'T' };
-	static const size_t SpriteHeaderSize = 20;
-	static const uint32_t SpriteVersion = 1;
-	static const uint32_t SpriteFormatRgba8888 = 1;
-	static const uint64_t MaxSpritePixels = 8192ull * 8192ull;
-
-	static bool ReadExact(std::ifstream& file, char* data, size_t size)
-	{
-		file.read(data, static_cast<std::streamsize>(size));
-		return static_cast<size_t>(file.gcount()) == size;
-	}
-
-	static bool ReadU32LE(const std::vector<uint8_t>& bytes, size_t offset, uint32_t& value)
-	{
-		if (offset + 4 > bytes.size())
-		{
-			return false;
-		}
-
-		value =
-			static_cast<uint32_t>(bytes[offset]) |
-			(static_cast<uint32_t>(bytes[offset + 1]) << 8) |
-			(static_cast<uint32_t>(bytes[offset + 2]) << 16) |
-			(static_cast<uint32_t>(bytes[offset + 3]) << 24);
-		return true;
-	}
-
-	static void WriteU32LE(std::ofstream& file, uint32_t value)
-	{
-		const char bytes[4] = {
-			static_cast<char>(value & 0xFF),
-			static_cast<char>((value >> 8) & 0xFF),
-			static_cast<char>((value >> 16) & 0xFF),
-			static_cast<char>((value >> 24) & 0xFF)
-		};
-		file.write(bytes, sizeof(bytes));
-	}
-
-	static bool CheckPixelCount(uint32_t width, uint32_t height, size_t& pixelCount)
-	{
-		if (width == 0 || height == 0)
-		{
-			return false;
-		}
-
-		const uint64_t total = static_cast<uint64_t>(width) * static_cast<uint64_t>(height);
-		if (total > MaxSpritePixels ||
-			total > static_cast<uint64_t>(std::numeric_limits<size_t>::max() / sizeof(uint32_t)))
-		{
-			return false;
-		}
-
-		pixelCount = static_cast<size_t>(total);
-		return true;
-	}
-
-	static bool ReadPixels(std::ifstream& file, std::vector<uint32_t>& pixels)
-	{
-		std::vector<uint8_t> bytes(pixels.size() * sizeof(uint32_t), 0);
-		if (!ReadExact(file, reinterpret_cast<char*>(bytes.data()), bytes.size()))
-		{
-			return false;
-		}
-
-		for (size_t i = 0; i < pixels.size(); ++i)
-		{
-			uint32_t value = 0;
-			if (!ReadU32LE(bytes, i * sizeof(uint32_t), value))
-			{
-				return false;
-			}
-			pixels[i] = value;
-		}
-
-		return true;
-	}
-
-	static void WritePixels(std::ofstream& file, const RenderData::Image& image)
-	{
-		for (size_t i = 0; i < image.total_pixels(); ++i)
-		{
-			WriteU32LE(file, image.data()[i]);
-		}
-	}
-}
-
-namespace Asset
-{
-	bool SpriteAssetLoader::Load(const std::string& path, RenderData::Image& image)
-	{
-		std::ifstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		std::vector<uint8_t> header(SpriteHeaderSize, 0);
-		if (!ReadExact(file, reinterpret_cast<char*>(header.data()), header.size()))
-		{
-			return false;
-		}
-
-		if (header[0] != SpriteMagic[0] ||
-			header[1] != SpriteMagic[1] ||
-			header[2] != SpriteMagic[2] ||
-			header[3] != SpriteMagic[3])
-		{
-			return false;
-		}
-
-		uint32_t version = 0;
-		uint32_t width = 0;
-		uint32_t height = 0;
-		uint32_t format = 0;
-		if (!ReadU32LE(header, 4, version) ||
-			!ReadU32LE(header, 8, width) ||
-			!ReadU32LE(header, 12, height) ||
-			!ReadU32LE(header, 16, format))
-		{
-			return false;
-		}
-
-		size_t pixelCount = 0;
-		if (version != SpriteVersion ||
-			format != SpriteFormatRgba8888 ||
-			!CheckPixelCount(width, height, pixelCount))
-		{
-			return false;
-		}
-
-		std::vector<uint32_t> pixels(pixelCount, 0);
-		if (!ReadPixels(file, pixels))
-		{
-			return false;
-		}
-
-		char trailingByte = 0;
-		file.read(&trailingByte, 1);
-		if (file.gcount() != 0)
-		{
-			return false;
-		}
-
-		image = RenderData::Image(
-			static_cast<int32_t>(width),
-			static_cast<int32_t>(height),
-			pixels);
-		return image.is_valid();
-	}
-
-	bool SpriteAssetLoader::Save(const std::string& path, const RenderData::Image& image)
-	{
-		if (!image.is_valid())
-		{
-			return false;
-		}
-
-		std::ofstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		file.write(SpriteMagic, sizeof(SpriteMagic));
-		WriteU32LE(file, SpriteVersion);
-		WriteU32LE(file, static_cast<uint32_t>(image.get_width()));
-		WriteU32LE(file, static_cast<uint32_t>(image.get_height()));
-		WriteU32LE(file, SpriteFormatRgba8888);
-		WritePixels(file, image);
-		return file.good();
-	}
-}
--- a/src/Asset/SpriteAssetLoader.h
+++ b/src/Asset/SpriteAssetLoader.h
@ -1,14 +0,0 @@
-#pragma once
-#include <string>
-#include "Image.h"
-
-namespace Asset
-{
-	class SpriteAssetLoader
-	{
-	public:
-		static const char* GetFileExtension() { return ".sprite"; }
-		static bool Load(const std::string& path, RenderData::Image& image);
-		static bool Save(const std::string& path, const RenderData::Image& image);
-	};
-}
--- a/src/Core/Asset/SpriteAssetLoader.cpp
+++ b/src/Core/Asset/SpriteAssetLoader.cpp
@ -1,182 +0,0 @@
-#include "SpriteAssetLoader.h"
-#include <cstdint>
-#include <fstream>
-#include <limits>
-
-namespace
-{
-	static const char SpriteMagic[4] = { 'S', 'P', 'R', 'T' };
-	static const size_t SpriteHeaderSize = 20;
-	static const uint32_t SpriteVersion = 1;
-	static const uint32_t SpriteFormatRgba8888 = 1;
-	static const uint64_t MaxSpritePixels = 8192ull * 8192ull;
-
-	static bool ReadExact(std::ifstream& file, char* data, size_t size)
-	{
-		file.read(data, static_cast<std::streamsize>(size));
-		return static_cast<size_t>(file.gcount()) == size;
-	}
-
-	static bool ReadU32LE(const std::vector<uint8_t>& bytes, size_t offset, uint32_t& value)
-	{
-		if (offset + 4 > bytes.size())
-		{
-			return false;
-		}
-
-		value =
-			static_cast<uint32_t>(bytes[offset]) |
-			(static_cast<uint32_t>(bytes[offset + 1]) << 8) |
-			(static_cast<uint32_t>(bytes[offset + 2]) << 16) |
-			(static_cast<uint32_t>(bytes[offset + 3]) << 24);
-		return true;
-	}
-
-	static void WriteU32LE(std::ofstream& file, uint32_t value)
-	{
-		const char bytes[4] = {
-			static_cast<char>(value & 0xFF),
-			static_cast<char>((value >> 8) & 0xFF),
-			static_cast<char>((value >> 16) & 0xFF),
-			static_cast<char>((value >> 24) & 0xFF)
-		};
-		file.write(bytes, sizeof(bytes));
-	}
-
-	static bool CheckPixelCount(uint32_t width, uint32_t height, size_t& pixelCount)
-	{
-		if (width == 0 || height == 0)
-		{
-			return false;
-		}
-
-		const uint64_t total = static_cast<uint64_t>(width) * static_cast<uint64_t>(height);
-		if (total > MaxSpritePixels ||
-			total > static_cast<uint64_t>(std::numeric_limits<size_t>::max() / sizeof(uint32_t)))
-		{
-			return false;
-		}
-
-		pixelCount = static_cast<size_t>(total);
-		return true;
-	}
-
-	static bool ReadPixels(std::ifstream& file, std::vector<uint32_t>& pixels)
-	{
-		std::vector<uint8_t> bytes(pixels.size() * sizeof(uint32_t), 0);
-		if (!ReadExact(file, reinterpret_cast<char*>(bytes.data()), bytes.size()))
-		{
-			return false;
-		}
-
-		for (size_t i = 0; i < pixels.size(); ++i)
-		{
-			uint32_t value = 0;
-			if (!ReadU32LE(bytes, i * sizeof(uint32_t), value))
-			{
-				return false;
-			}
-			pixels[i] = value;
-		}
-
-		return true;
-	}
-}
-
-namespace Asset
-{
-	bool SpriteAssetLoader::Load(
-		const std::string& path,
-		std::vector<uint32_t>& pixels,
-		RenderData::Image& image)
-	{
-		std::ifstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		std::vector<uint8_t> header(SpriteHeaderSize, 0);
-		if (!ReadExact(file, reinterpret_cast<char*>(header.data()), header.size()))
-		{
-			return false;
-		}
-
-		if (header[0] != SpriteMagic[0] ||
-			header[1] != SpriteMagic[1] ||
-			header[2] != SpriteMagic[2] ||
-			header[3] != SpriteMagic[3])
-		{
-			return false;
-		}
-
-		uint32_t version = 0;
-		uint32_t width = 0;
-		uint32_t height = 0;
-		uint32_t format = 0;
-		if (!ReadU32LE(header, 4, version) ||
-			!ReadU32LE(header, 8, width) ||
-			!ReadU32LE(header, 12, height) ||
-			!ReadU32LE(header, 16, format))
-		{
-			return false;
-		}
-
-		size_t pixelCount = 0;
-		if (version != SpriteVersion ||
-			format != SpriteFormatRgba8888 ||
-			!CheckPixelCount(width, height, pixelCount))
-		{
-			return false;
-		}
-
-		std::vector<uint32_t> loadedPixels(pixelCount, 0);
-		if (!ReadPixels(file, loadedPixels))
-		{
-			return false;
-		}
-
-		char trailingByte = 0;
-		file.read(&trailingByte, 1);
-		if (file.gcount() != 0)
-		{
-			return false;
-		}
-
-		pixels.swap(loadedPixels);
-		image = RenderData::Image(pixels.data(), static_cast<int32_t>(width), static_cast<int32_t>(height));
-		return image.pixels != nullptr && image.width > 0 && image.height > 0;
-	}
-
-	bool SpriteAssetLoader::Save(const std::string& path, const RenderData::Image& image)
-	{
-		if (image.pixels == nullptr || image.width <= 0 || image.height <= 0)
-		{
-			return false;
-		}
-
-		size_t pixelCount = 0;
-		if (!CheckPixelCount(static_cast<uint32_t>(image.width), static_cast<uint32_t>(image.height), pixelCount))
-		{
-			return false;
-		}
-
-		std::ofstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		file.write(SpriteMagic, sizeof(SpriteMagic));
-		WriteU32LE(file, SpriteVersion);
-		WriteU32LE(file, static_cast<uint32_t>(image.width));
-		WriteU32LE(file, static_cast<uint32_t>(image.height));
-		WriteU32LE(file, SpriteFormatRgba8888);
-		for (size_t i = 0; i < pixelCount; ++i)
-		{
-			WriteU32LE(file, image.pixels[i]);
-		}
-
-		return file.good();
-	}
-}
--- a/src/Core/Asset/SpriteAssetLoader.h
+++ b/src/Core/Asset/SpriteAssetLoader.h
@ -1,17 +0,0 @@
-#pragma once
-
-#include <string>
-#include <vector>
-#include "Image.h"
-
-namespace Asset
-{
-	class SpriteAssetLoader
-	{
-	public:
-		static const char* GetFileExtension() { return ".sprite"; }
-
-		static bool Load(const std::string& path, std::vector<uint32_t>& pixels, RenderData::Image& image);
-		static bool Save(const std::string& path, const RenderData::Image& image);
-	};
-}
--- a/src/Core/Platform/AlsaAudioInput.cpp
+++ b/src/Core/Platform/AlsaAudioInput.cpp
@ -1,141 +0,0 @@
-#include "AlsaAudioInput.h"
-#include <cmath>
-#include <iostream>
-#include <vector>
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-#include <alsa/asoundlib.h>
-#endif
-
-namespace Platform
-{
-	AlsaAudioInput::AlsaAudioInput()
-		: device_name_("default"),
-		  sample_rate_(16000),
-		  channels_(1),
-		  opened_(false)
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		  ,
-		  handle_(nullptr)
-#endif
-	{
-	}
-
-	AlsaAudioInput::~AlsaAudioInput()
-	{
-		shutdown();
-	}
-
-	bool AlsaAudioInput::init(const std::string& device_name, uint32_t sample_rate, uint32_t channels)
-	{
-		shutdown();
-
-		if (sample_rate == 0 || channels == 0)
-		{
-			std::cerr << "AlsaAudioInput invalid params." << std::endl;
-			return false;
-		}
-
-		device_name_ = device_name;
-		sample_rate_ = sample_rate;
-		channels_ = channels;
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		int result = snd_pcm_open(&handle_, device_name_.c_str(), SND_PCM_STREAM_CAPTURE, 0);
-		if (result < 0)
-		{
-			std::cerr << "AlsaAudioInput open failed: " << snd_strerror(result) << std::endl;
-			handle_ = nullptr;
-			return false;
-		}
-
-		result = snd_pcm_set_params(
-			handle_,
-			SND_PCM_FORMAT_S16_LE,
-			SND_PCM_ACCESS_RW_INTERLEAVED,
-			channels_,
-			sample_rate_,
-			1,
-			50000);
-		if (result < 0)
-		{
-			std::cerr << "AlsaAudioInput set params failed: " << snd_strerror(result) << std::endl;
-			shutdown();
-			return false;
-		}
-
-		opened_ = true;
-		return true;
-#else
-		std::cerr << "AlsaAudioInput backend is unavailable. Enable ALSA development libraries." << std::endl;
-		return false;
-#endif
-	}
-
-	int AlsaAudioInput::read_samples(int16_t* buffer, int sample_count)
-	{
-		if (buffer == nullptr || sample_count <= 0 || !opened_)
-		{
-			return 0;
-		}
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		const snd_pcm_uframes_t frames = static_cast<snd_pcm_uframes_t>(sample_count / channels_);
-		int result = snd_pcm_readi(handle_, buffer, frames);
-		if (result == -EPIPE)
-		{
-			snd_pcm_prepare(handle_);
-			return 0;
-		}
-		if (result < 0)
-		{
-			result = snd_pcm_recover(handle_, result, 0);
-			if (result < 0)
-			{
-				std::cerr << "AlsaAudioInput read failed: " << snd_strerror(result) << std::endl;
-				return 0;
-			}
-		}
-
-		return result * static_cast<int>(channels_);
-#else
-		return 0;
-#endif
-	}
-
-	float AlsaAudioInput::read_volume(int sample_count)
-	{
-		if (sample_count <= 0)
-		{
-			return 0.0f;
-		}
-
-		std::vector<int16_t> samples(static_cast<size_t>(sample_count), 0);
-		const int count = read_samples(samples.data(), sample_count);
-		if (count <= 0)
-		{
-			return 0.0f;
-		}
-
-		double sum = 0.0;
-		for (int i = 0; i < count; ++i)
-		{
-			const double value = static_cast<double>(samples[i]) / 32768.0;
-			sum += value * value;
-		}
-
-		return static_cast<float>(std::sqrt(sum / count));
-	}
-
-	void AlsaAudioInput::shutdown()
-	{
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		if (handle_ != nullptr)
-		{
-			snd_pcm_close(handle_);
-			handle_ = nullptr;
-		}
-#endif
-		opened_ = false;
-	}
-}
--- a/src/Core/Platform/AlsaAudioInput.h
+++ b/src/Core/Platform/AlsaAudioInput.h
@ -1,39 +0,0 @@
-#pragma once
-
-#include "AudioInput.h"
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-typedef struct _snd_pcm snd_pcm_t;
-#endif
-
-namespace Platform
-{
-	class AlsaAudioInput : public IAudioInput
-	{
-	private:
-		std::string device_name_;
-		uint32_t sample_rate_;
-		uint32_t channels_;
-		bool opened_;
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		snd_pcm_t* handle_;
-#endif
-
-	public:
-		AlsaAudioInput();
-		~AlsaAudioInput();
-
-		bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) override;
-		int read_samples(int16_t* buffer, int sample_count) override;
-		float read_volume(int sample_count = 512) override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		uint32_t get_sample_rate() const override { return sample_rate_; }
-		uint32_t get_channels() const override { return channels_; }
-		const std::string& get_device_name() const override { return device_name_; }
-	};
-}
--- a/src/Core/Platform/AlsaAudioOutput.cpp
+++ b/src/Core/Platform/AlsaAudioOutput.cpp
@ -1,204 +0,0 @@
-#include "AlsaAudioOutput.h"
-#include <algorithm>
-#include <cstring>
-#include <fstream>
-#include <iostream>
-#include <vector>
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-#include <alsa/asoundlib.h>
-#endif
-
-namespace
-{
-	struct WavHeader
-	{
-		char riff[4];
-		uint32_t file_size;
-		char wave[4];
-		char fmt[4];
-		uint32_t fmt_size;
-		uint16_t audio_format;
-		uint16_t channels;
-		uint32_t sample_rate;
-		uint32_t byte_rate;
-		uint16_t block_align;
-		uint16_t bits_per_sample;
-		char data[4];
-		uint32_t data_size;
-	};
-
-	static bool IsSupportedWav(const WavHeader& header)
-	{
-		return std::memcmp(header.riff, "RIFF", 4) == 0 &&
-			std::memcmp(header.wave, "WAVE", 4) == 0 &&
-			std::memcmp(header.fmt, "fmt ", 4) == 0 &&
-			std::memcmp(header.data, "data", 4) == 0 &&
-			header.audio_format == 1 &&
-			header.bits_per_sample == 16 &&
-			header.fmt_size == 16;
-	}
-}
-
-namespace Platform
-{
-	AlsaAudioOutput::AlsaAudioOutput()
-		: device_name_("default"),
-		  sample_rate_(16000),
-		  channels_(1),
-		  opened_(false)
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		  ,
-		  handle_(nullptr)
-#endif
-	{
-	}
-
-	AlsaAudioOutput::~AlsaAudioOutput()
-	{
-		shutdown();
-	}
-
-	bool AlsaAudioOutput::init(const std::string& device_name, uint32_t sample_rate, uint32_t channels)
-	{
-		shutdown();
-
-		if (sample_rate == 0 || channels == 0)
-		{
-			std::cerr << "AlsaAudioOutput invalid params." << std::endl;
-			return false;
-		}
-
-		device_name_ = device_name;
-		sample_rate_ = sample_rate;
-		channels_ = channels;
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		int result = snd_pcm_open(&handle_, device_name_.c_str(), SND_PCM_STREAM_PLAYBACK, 0);
-		if (result < 0)
-		{
-			std::cerr << "AlsaAudioOutput open failed: " << snd_strerror(result) << std::endl;
-			handle_ = nullptr;
-			return false;
-		}
-
-		result = snd_pcm_set_params(
-			handle_,
-			SND_PCM_FORMAT_S16_LE,
-			SND_PCM_ACCESS_RW_INTERLEAVED,
-			channels_,
-			sample_rate_,
-			1,
-			50000);
-		if (result < 0)
-		{
-			std::cerr << "AlsaAudioOutput set params failed: " << snd_strerror(result) << std::endl;
-			shutdown();
-			return false;
-		}
-
-		opened_ = true;
-		return true;
-#else
-		std::cerr << "AlsaAudioOutput backend is unavailable. Enable ALSA development libraries." << std::endl;
-		return false;
-#endif
-	}
-
-	int AlsaAudioOutput::write_samples(const int16_t* samples, int sample_count)
-	{
-		if (samples == nullptr || sample_count <= 0 || !opened_)
-		{
-			return 0;
-		}
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		const snd_pcm_uframes_t frames = static_cast<snd_pcm_uframes_t>(sample_count / channels_);
-		int result = snd_pcm_writei(handle_, samples, frames);
-		if (result == -EPIPE)
-		{
-			snd_pcm_prepare(handle_);
-			return 0;
-		}
-		if (result < 0)
-		{
-			result = snd_pcm_recover(handle_, result, 0);
-			if (result < 0)
-			{
-				std::cerr << "AlsaAudioOutput write failed: " << snd_strerror(result) << std::endl;
-				return 0;
-			}
-		}
-
-		return result * static_cast<int>(channels_);
-#else
-		return 0;
-#endif
-	}
-
-	bool AlsaAudioOutput::play_wav(const std::string& path)
-	{
-		std::ifstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			std::cerr << "Open wav failed: " << path << std::endl;
-			return false;
-		}
-
-		WavHeader header;
-		file.read(reinterpret_cast<char*>(&header), sizeof(header));
-		if (!file.good() || !IsSupportedWav(header))
-		{
-			std::cerr << "Unsupported wav: " << path << std::endl;
-			return false;
-		}
-
-		if (!opened_ || sample_rate_ != header.sample_rate || channels_ != header.channels)
-		{
-			if (!init(device_name_, header.sample_rate, header.channels))
-			{
-				return false;
-			}
-		}
-
-		std::vector<int16_t> samples(header.data_size / sizeof(int16_t), 0);
-		file.read(reinterpret_cast<char*>(samples.data()), header.data_size);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		size_t offset = 0;
-		while (offset < samples.size())
-		{
-			const int count = static_cast<int>(std::min<size_t>(4096, samples.size() - offset));
-			const int written = write_samples(samples.data() + offset, count);
-			if (written <= 0)
-			{
-				return false;
-			}
-
-			offset += static_cast<size_t>(written);
-		}
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		if (handle_ != nullptr)
-		{
-			snd_pcm_drain(handle_);
-		}
-#endif
-		return true;
-	}
-
-	void AlsaAudioOutput::shutdown()
-	{
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		if (handle_ != nullptr)
-		{
-			snd_pcm_close(handle_);
-			handle_ = nullptr;
-		}
-#endif
-		opened_ = false;
-	}
-}
--- a/src/Core/Platform/AlsaAudioOutput.h
+++ b/src/Core/Platform/AlsaAudioOutput.h
@ -1,39 +0,0 @@
-#pragma once
-
-#include "AudioOutput.h"
-
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-typedef struct _snd_pcm snd_pcm_t;
-#endif
-
-namespace Platform
-{
-	class AlsaAudioOutput : public IAudioOutput
-	{
-	private:
-		std::string device_name_;
-		uint32_t sample_rate_;
-		uint32_t channels_;
-		bool opened_;
-#if defined(__linux__) && defined(PLATFORM_HAS_ALSA)
-		snd_pcm_t* handle_;
-#endif
-
-	public:
-		AlsaAudioOutput();
-		~AlsaAudioOutput();
-
-		bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) override;
-		int write_samples(const int16_t* samples, int sample_count) override;
-		bool play_wav(const std::string& path) override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		uint32_t get_sample_rate() const override { return sample_rate_; }
-		uint32_t get_channels() const override { return channels_; }
-		const std::string& get_device_name() const override { return device_name_; }
-	};
-}
--- a/src/Core/Platform/AudioInput.h
+++ b/src/Core/Platform/AudioInput.h
@ -1,26 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <string>
-
-namespace Platform
-{
-	class IAudioInput
-	{
-	public:
-		virtual ~IAudioInput() {}
-
-		virtual bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) = 0;
-		virtual int read_samples(int16_t* buffer, int sample_count) = 0;
-		virtual float read_volume(int sample_count = 512) = 0;
-		virtual void shutdown() = 0;
-
-		virtual bool is_open() const = 0;
-		virtual uint32_t get_sample_rate() const = 0;
-		virtual uint32_t get_channels() const = 0;
-		virtual const std::string& get_device_name() const = 0;
-	};
-}
--- a/src/Core/Platform/AudioOutput.h
+++ b/src/Core/Platform/AudioOutput.h
@ -1,26 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <string>
-
-namespace Platform
-{
-	class IAudioOutput
-	{
-	public:
-		virtual ~IAudioOutput() {}
-
-		virtual bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) = 0;
-		virtual int write_samples(const int16_t* samples, int sample_count) = 0;
-		virtual bool play_wav(const std::string& path) = 0;
-		virtual void shutdown() = 0;
-
-		virtual bool is_open() const = 0;
-		virtual uint32_t get_sample_rate() const = 0;
-		virtual uint32_t get_channels() const = 0;
-		virtual const std::string& get_device_name() const = 0;
-	};
-}
--- a/src/Core/Platform/ButtonInput.h
+++ b/src/Core/Platform/ButtonInput.h
@ -1,23 +0,0 @@
-#pragma once
-
-#include <string>
-
-namespace Platform
-{
-	class IButtonInput
-	{
-	public:
-		virtual ~IButtonInput() {}
-
-		virtual bool init(const std::string& device_path = "", int key_code = 0) = 0;
-		virtual void update() = 0;
-		virtual void shutdown() = 0;
-
-		virtual bool is_open() const = 0;
-		virtual bool is_down() const = 0;
-		virtual bool was_pressed() const = 0;
-		virtual bool was_released() const = 0;
-		virtual const std::string& get_device_path() const = 0;
-		virtual int get_key_code() const = 0;
-	};
-}
--- a/src/Core/Platform/DefaultHardware.h
+++ b/src/Core/Platform/DefaultHardware.h
@ -1,24 +0,0 @@
-#pragma once
-
-#ifdef USE_FRAMEBUFFER
-#include "AlsaAudioInput.h"
-#include "AlsaAudioOutput.h"
-#include "EvdevButtonInput.h"
-#else
-#include "SdlAudioInput.h"
-#include "SdlAudioOutput.h"
-#include "SdlKeyboardButtonInput.h"
-#endif
-
-namespace Platform
-{
-#ifdef USE_FRAMEBUFFER
-	typedef AlsaAudioInput DefaultAudioInput;
-	typedef AlsaAudioOutput DefaultAudioOutput;
-	typedef EvdevButtonInput DefaultButtonInput;
-#else
-	typedef SdlAudioInput DefaultAudioInput;
-	typedef SdlAudioOutput DefaultAudioOutput;
-	typedef SdlKeyboardButtonInput DefaultButtonInput;
-#endif
-}
--- a/src/Core/Platform/EvdevButtonInput.cpp
+++ b/src/Core/Platform/EvdevButtonInput.cpp
@ -1,123 +0,0 @@
-#include "EvdevButtonInput.h"
-#include <iostream>
-
-#if defined(__linux__)
-#include <errno.h>
-#include <fcntl.h>
-#include <linux/input.h>
-#include <unistd.h>
-#endif
-
-namespace Platform
-{
-	EvdevButtonInput::EvdevButtonInput()
-		: device_path_("/dev/input/event0"),
-		  key_code_(28),
-		  opened_(false),
-		  down_(false),
-		  pressed_(false),
-		  released_(false)
-#if defined(__linux__)
-		  ,
-		  fd_(-1)
-#endif
-	{
-	}
-
-	EvdevButtonInput::~EvdevButtonInput()
-	{
-		shutdown();
-	}
-
-	bool EvdevButtonInput::init(const std::string& device_path, int key_code)
-	{
-		shutdown();
-
-		device_path_ = device_path.empty() ? "/dev/input/event0" : device_path;
-		key_code_ = key_code == 0 ? 28 : key_code;
-		down_ = false;
-		pressed_ = false;
-		released_ = false;
-
-#if defined(__linux__)
-		fd_ = open(device_path_.c_str(), O_RDONLY | O_NONBLOCK);
-		if (fd_ < 0)
-		{
-			std::cerr << "EvdevButtonInput open failed: " << device_path_ << std::endl;
-			return false;
-		}
-
-		opened_ = true;
-		return true;
-#else
-		std::cerr << "EvdevButtonInput is only implemented on Linux evdev." << std::endl;
-		return false;
-#endif
-	}
-
-	void EvdevButtonInput::update()
-	{
-		pressed_ = false;
-		released_ = false;
-
-		if (!opened_)
-		{
-			return;
-		}
-
-#if defined(__linux__)
-		input_event event;
-		while (true)
-		{
-			const ssize_t bytes = read(fd_, &event, sizeof(event));
-			if (bytes == static_cast<ssize_t>(sizeof(event)))
-			{
-				if (event.type != EV_KEY || event.code != key_code_)
-				{
-					continue;
-				}
-
-				if (event.value == 1)
-				{
-					if (!down_)
-					{
-						pressed_ = true;
-					}
-					down_ = true;
-				}
-				else if (event.value == 0)
-				{
-					if (down_)
-					{
-						released_ = true;
-					}
-					down_ = false;
-				}
-			}
-			else
-			{
-				if (errno != EAGAIN && errno != EWOULDBLOCK)
-				{
-					std::cerr << "EvdevButtonInput read failed." << std::endl;
-				}
-				break;
-			}
-		}
-#endif
-	}
-
-	void EvdevButtonInput::shutdown()
-	{
-#if defined(__linux__)
-		if (fd_ >= 0)
-		{
-			close(fd_);
-			fd_ = -1;
-		}
-#endif
-		opened_ = false;
-		down_ = false;
-		pressed_ = false;
-		released_ = false;
-	}
-}
--- a/src/Core/Platform/EvdevButtonInput.h
+++ b/src/Core/Platform/EvdevButtonInput.h
@ -1,35 +0,0 @@
-#pragma once
-
-#include "ButtonInput.h"
-
-namespace Platform
-{
-	class EvdevButtonInput : public IButtonInput
-	{
-	private:
-		std::string device_path_;
-		int key_code_;
-		bool opened_;
-		bool down_;
-		bool pressed_;
-		bool released_;
-#if defined(__linux__)
-		int fd_;
-#endif
-
-	public:
-		EvdevButtonInput();
-		~EvdevButtonInput();
-
-		bool init(const std::string& device_path = "/dev/input/event0", int key_code = 28) override;
-		void update() override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		bool is_down() const override { return down_; }
-		bool was_pressed() const override { return pressed_; }
-		bool was_released() const override { return released_; }
-		const std::string& get_device_path() const override { return device_path_; }
-		int get_key_code() const override { return key_code_; }
-	};
-}
--- a/src/Core/Platform/SdlAudioInput.cpp
+++ b/src/Core/Platform/SdlAudioInput.cpp
@ -1,153 +0,0 @@
-#include "SdlAudioInput.h"
-#include <algorithm>
-#include <cmath>
-#include <iostream>
-#include <vector>
-
-namespace
-{
-	static bool EnsureSdlAudio()
-	{
-		if (SDL_WasInit(0) == 0 && SDL_Init(0) < 0)
-		{
-			std::cerr << "SDL_Init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		if ((SDL_WasInit(SDL_INIT_AUDIO) & SDL_INIT_AUDIO) == 0 &&
-			SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
-		{
-			std::cerr << "SDL audio init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		return true;
-	}
-}
-
-namespace Platform
-{
-	SdlAudioInput::SdlAudioInput()
-		: device_name_("default"),
-		  sample_rate_(16000),
-		  channels_(1),
-		  opened_(false),
-		  device_id_(0)
-	{
-	}
-
-	SdlAudioInput::~SdlAudioInput()
-	{
-		shutdown();
-	}
-
-	bool SdlAudioInput::init(const std::string& device_name, uint32_t sample_rate, uint32_t channels)
-	{
-		shutdown();
-
-		if (sample_rate == 0 || channels == 0)
-		{
-			std::cerr << "SdlAudioInput invalid params." << std::endl;
-			return false;
-		}
-		if (!EnsureSdlAudio())
-		{
-			return false;
-		}
-
-		SDL_AudioSpec desired;
-		SDL_AudioSpec obtained;
-		SDL_zero(desired);
-		SDL_zero(obtained);
-		desired.freq = static_cast<int>(sample_rate);
-		desired.format = AUDIO_S16SYS;
-		desired.channels = static_cast<Uint8>(channels);
-		desired.samples = 512;
-		desired.callback = nullptr;
-
-		const char* sdl_device_name = nullptr;
-		if (!device_name.empty() && device_name != "default")
-		{
-			sdl_device_name = device_name.c_str();
-		}
-
-		device_id_ = SDL_OpenAudioDevice(
-			sdl_device_name,
-			1,
-			&desired,
-			&obtained,
-			SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE);
-		if (device_id_ == 0)
-		{
-			std::cerr << "SdlAudioInput open failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-		if (obtained.format != AUDIO_S16SYS)
-		{
-			std::cerr << "SdlAudioInput unsupported sample format." << std::endl;
-			shutdown();
-			return false;
-		}
-
-		device_name_ = device_name.empty() ? "default" : device_name;
-		sample_rate_ = static_cast<uint32_t>(obtained.freq);
-		channels_ = static_cast<uint32_t>(obtained.channels);
-		opened_ = true;
-
-		SDL_PauseAudioDevice(device_id_, 0);
-		return true;
-	}
-
-	int SdlAudioInput::read_samples(int16_t* buffer, int sample_count)
-	{
-		if (buffer == nullptr || sample_count <= 0 || !opened_)
-		{
-			return 0;
-		}
-
-		const Uint32 requested_bytes = static_cast<Uint32>(sample_count * static_cast<int>(sizeof(int16_t)));
-		const Uint32 available_bytes = SDL_GetQueuedAudioSize(device_id_);
-		const Uint32 read_bytes = std::min(requested_bytes, available_bytes);
-		if (read_bytes == 0)
-		{
-			return 0;
-		}
-
-		const Uint32 dequeued = SDL_DequeueAudio(device_id_, buffer, read_bytes);
-		return static_cast<int>(dequeued / sizeof(int16_t));
-	}
-
-	float SdlAudioInput::read_volume(int sample_count)
-	{
-		if (sample_count <= 0)
-		{
-			return 0.0f;
-		}
-
-		std::vector<int16_t> samples(static_cast<size_t>(sample_count), 0);
-		const int count = read_samples(samples.data(), sample_count);
-		if (count <= 0)
-		{
-			return 0.0f;
-		}
-
-		double sum = 0.0;
-		for (int i = 0; i < count; ++i)
-		{
-			const double value = static_cast<double>(samples[i]) / 32768.0;
-			sum += value * value;
-		}
-
-		return static_cast<float>(std::sqrt(sum / count));
-	}
-
-	void SdlAudioInput::shutdown()
-	{
-		if (device_id_ != 0)
-		{
-			SDL_CloseAudioDevice(device_id_);
-			device_id_ = 0;
-		}
-		opened_ = false;
-	}
-}
--- a/src/Core/Platform/SdlAudioInput.h
+++ b/src/Core/Platform/SdlAudioInput.h
@ -1,34 +0,0 @@
-#pragma once
-
-#include "AudioInput.h"
-#include <SDL.h>
-
-namespace Platform
-{
-	class SdlAudioInput : public IAudioInput
-	{
-	private:
-		std::string device_name_;
-		uint32_t sample_rate_;
-		uint32_t channels_;
-		bool opened_;
-		SDL_AudioDeviceID device_id_;
-
-	public:
-		SdlAudioInput();
-		~SdlAudioInput();
-
-		bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) override;
-		int read_samples(int16_t* buffer, int sample_count) override;
-		float read_volume(int sample_count = 512) override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		uint32_t get_sample_rate() const override { return sample_rate_; }
-		uint32_t get_channels() const override { return channels_; }
-		const std::string& get_device_name() const override { return device_name_; }
-	};
-}
--- a/src/Core/Platform/SdlAudioOutput.cpp
+++ b/src/Core/Platform/SdlAudioOutput.cpp
@ -1,209 +0,0 @@
-#include "SdlAudioOutput.h"
-#include <algorithm>
-#include <cstring>
-#include <fstream>
-#include <iostream>
-#include <vector>
-
-namespace
-{
-	struct WavHeader
-	{
-		char riff[4];
-		uint32_t file_size;
-		char wave[4];
-		char fmt[4];
-		uint32_t fmt_size;
-		uint16_t audio_format;
-		uint16_t channels;
-		uint32_t sample_rate;
-		uint32_t byte_rate;
-		uint16_t block_align;
-		uint16_t bits_per_sample;
-		char data[4];
-		uint32_t data_size;
-	};
-
-	static bool EnsureSdlAudio()
-	{
-		if (SDL_WasInit(0) == 0 && SDL_Init(0) < 0)
-		{
-			std::cerr << "SDL_Init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		if ((SDL_WasInit(SDL_INIT_AUDIO) & SDL_INIT_AUDIO) == 0 &&
-			SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
-		{
-			std::cerr << "SDL audio init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		return true;
-	}
-
-	static bool IsSupportedWav(const WavHeader& header)
-	{
-		return std::memcmp(header.riff, "RIFF", 4) == 0 &&
-			std::memcmp(header.wave, "WAVE", 4) == 0 &&
-			std::memcmp(header.fmt, "fmt ", 4) == 0 &&
-			std::memcmp(header.data, "data", 4) == 0 &&
-			header.audio_format == 1 &&
-			header.bits_per_sample == 16 &&
-			header.fmt_size == 16;
-	}
-}
-
-namespace Platform
-{
-	SdlAudioOutput::SdlAudioOutput()
-		: device_name_("default"),
-		  sample_rate_(16000),
-		  channels_(1),
-		  opened_(false),
-		  device_id_(0),
-		  max_queued_samples_(0)
-	{
-	}
-
-	SdlAudioOutput::~SdlAudioOutput()
-	{
-		shutdown();
-	}
-
-	bool SdlAudioOutput::init(const std::string& device_name, uint32_t sample_rate, uint32_t channels)
-	{
-		shutdown();
-
-		if (sample_rate == 0 || channels == 0)
-		{
-			std::cerr << "SdlAudioOutput invalid params." << std::endl;
-			return false;
-		}
-		if (!EnsureSdlAudio())
-		{
-			return false;
-		}
-
-		SDL_AudioSpec desired;
-		SDL_AudioSpec obtained;
-		SDL_zero(desired);
-		SDL_zero(obtained);
-		desired.freq = static_cast<int>(sample_rate);
-		desired.format = AUDIO_S16SYS;
-		desired.channels = static_cast<Uint8>(channels);
-		desired.samples = 512;
-		desired.callback = nullptr;
-
-		const char* sdl_device_name = nullptr;
-		if (!device_name.empty() && device_name != "default")
-		{
-			sdl_device_name = device_name.c_str();
-		}
-
-		device_id_ = SDL_OpenAudioDevice(
-			sdl_device_name,
-			0,
-			&desired,
-			&obtained,
-			SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE);
-		if (device_id_ == 0)
-		{
-			std::cerr << "SdlAudioOutput open failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-		if (obtained.format != AUDIO_S16SYS)
-		{
-			std::cerr << "SdlAudioOutput unsupported sample format." << std::endl;
-			shutdown();
-			return false;
-		}
-
-		device_name_ = device_name.empty() ? "default" : device_name;
-		sample_rate_ = static_cast<uint32_t>(obtained.freq);
-		channels_ = static_cast<uint32_t>(obtained.channels);
-		max_queued_samples_ = std::max<uint32_t>(channels_, sample_rate_ * channels_ / 8);
-		opened_ = true;
-
-		SDL_PauseAudioDevice(device_id_, 0);
-		return true;
-	}
-
-	int SdlAudioOutput::write_samples(const int16_t* samples, int sample_count)
-	{
-		if (samples == nullptr || sample_count <= 0 || !opened_)
-		{
-			return 0;
-		}
-
-		const Uint32 queued_samples = SDL_GetQueuedAudioSize(device_id_) / sizeof(int16_t);
-		if (queued_samples >= max_queued_samples_)
-		{
-			return 0;
-		}
-
-		const uint32_t available_samples = max_queued_samples_ - queued_samples;
-		const int write_count = static_cast<int>(std::min<uint32_t>(
-			static_cast<uint32_t>(sample_count),
-			available_samples));
-		if (write_count <= 0)
-		{
-			return 0;
-		}
-
-		const Uint32 bytes = static_cast<Uint32>(write_count * static_cast<int>(sizeof(int16_t)));
-		if (SDL_QueueAudio(device_id_, samples, bytes) != 0)
-		{
-			std::cerr << "SdlAudioOutput queue failed: " << SDL_GetError() << std::endl;
-			return 0;
-		}
-
-		return write_count;
-	}
-
-	bool SdlAudioOutput::play_wav(const std::string& path)
-	{
-		std::ifstream file(path.c_str(), std::ios::binary);
-		if (!file.good())
-		{
-			std::cerr << "Open wav failed: " << path << std::endl;
-			return false;
-		}
-
-		WavHeader header;
-		file.read(reinterpret_cast<char*>(&header), sizeof(header));
-		if (!file.good() || !IsSupportedWav(header))
-		{
-			std::cerr << "Unsupported wav: " << path << std::endl;
-			return false;
-		}
-
-		if (!opened_ || sample_rate_ != header.sample_rate || channels_ != header.channels)
-		{
-			if (!init(device_name_, header.sample_rate, header.channels))
-			{
-				return false;
-			}
-		}
-
-		std::vector<int16_t> samples(header.data_size / sizeof(int16_t), 0);
-		file.read(reinterpret_cast<char*>(samples.data()), header.data_size);
-		if (!file.good())
-		{
-			return false;
-		}
-
-		return SDL_QueueAudio(device_id_, samples.data(), header.data_size) == 0;
-	}
-
-	void SdlAudioOutput::shutdown()
-	{
-		if (device_id_ != 0)
-		{
-			SDL_ClearQueuedAudio(device_id_);
-			SDL_CloseAudioDevice(device_id_);
-			device_id_ = 0;
-		}
-		opened_ = false;
-	}
-}
--- a/src/Core/Platform/SdlAudioOutput.h
+++ b/src/Core/Platform/SdlAudioOutput.h
@ -1,35 +0,0 @@
-#pragma once
-
-#include "AudioOutput.h"
-#include <SDL.h>
-
-namespace Platform
-{
-	class SdlAudioOutput : public IAudioOutput
-	{
-	private:
-		std::string device_name_;
-		uint32_t sample_rate_;
-		uint32_t channels_;
-		bool opened_;
-		SDL_AudioDeviceID device_id_;
-		uint32_t max_queued_samples_;
-
-	public:
-		SdlAudioOutput();
-		~SdlAudioOutput();
-
-		bool init(
-			const std::string& device_name = "default",
-			uint32_t sample_rate = 16000,
-			uint32_t channels = 1) override;
-		int write_samples(const int16_t* samples, int sample_count) override;
-		bool play_wav(const std::string& path) override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		uint32_t get_sample_rate() const override { return sample_rate_; }
-		uint32_t get_channels() const override { return channels_; }
-		const std::string& get_device_name() const override { return device_name_; }
-	};
-}
--- a/src/Core/Platform/SdlKeyboardButtonInput.cpp
+++ b/src/Core/Platform/SdlKeyboardButtonInput.cpp
@ -1,99 +0,0 @@
-#include "SdlKeyboardButtonInput.h"
-#include <iostream>
-
-namespace
-{
-	static bool EnsureSdlEvents()
-	{
-		if (SDL_WasInit(0) == 0 && SDL_Init(0) < 0)
-		{
-			std::cerr << "SDL_Init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		if ((SDL_WasInit(SDL_INIT_EVENTS) & SDL_INIT_EVENTS) == 0 &&
-			SDL_InitSubSystem(SDL_INIT_EVENTS) < 0)
-		{
-			std::cerr << "SDL events init failed: " << SDL_GetError() << std::endl;
-			return false;
-		}
-
-		return true;
-	}
-
-	static int NormalizeScancode(const std::string& device_path, int key_code)
-	{
-		const bool looks_like_default_evdev = device_path.empty() || device_path == "keyboard" || device_path == "/dev/input/event0";
-		if ((key_code == 0 || key_code == 28) && looks_like_default_evdev)
-		{
-			return SDL_SCANCODE_SPACE;
-		}
-		if (key_code < 0 || key_code >= SDL_NUM_SCANCODES)
-		{
-			return SDL_SCANCODE_SPACE;
-		}
-
-		return key_code;
-	}
-}
-
-namespace Platform
-{
-	SdlKeyboardButtonInput::SdlKeyboardButtonInput()
-		: device_path_("keyboard"),
-		  key_code_(SDL_SCANCODE_SPACE),
-		  opened_(false),
-		  down_(false),
-		  pressed_(false),
-		  released_(false)
-	{
-	}
-
-	SdlKeyboardButtonInput::~SdlKeyboardButtonInput()
-	{
-		shutdown();
-	}
-
-	bool SdlKeyboardButtonInput::init(const std::string& device_path, int key_code)
-	{
-		if (!EnsureSdlEvents())
-		{
-			return false;
-		}
-
-		device_path_ = device_path.empty() ? "keyboard" : device_path;
-		key_code_ = NormalizeScancode(device_path_, key_code);
-		opened_ = true;
-		down_ = false;
-		pressed_ = false;
-		released_ = false;
-		return true;
-	}
-
-	void SdlKeyboardButtonInput::update()
-	{
-		pressed_ = false;
-		released_ = false;
-
-		if (!opened_)
-		{
-			return;
-		}
-
-		SDL_PumpEvents();
-		const Uint8* keyboard_state = SDL_GetKeyboardState(nullptr);
-		const bool current_down = keyboard_state != nullptr && keyboard_state[key_code_] != 0;
-
-		pressed_ = current_down && !down_;
-		released_ = !current_down && down_;
-		down_ = current_down;
-	}
-
-	void SdlKeyboardButtonInput::shutdown()
-	{
-		opened_ = false;
-		down_ = false;
-		pressed_ = false;
-		released_ = false;
-	}
-}
--- a/src/Core/Platform/SdlKeyboardButtonInput.h
+++ b/src/Core/Platform/SdlKeyboardButtonInput.h
@ -1,33 +0,0 @@
-#pragma once
-
-#include "ButtonInput.h"
-#include <SDL.h>
-
-namespace Platform
-{
-	class SdlKeyboardButtonInput : public IButtonInput
-	{
-	private:
-		std::string device_path_;
-		int key_code_;
-		bool opened_;
-		bool down_;
-		bool pressed_;
-		bool released_;
-
-	public:
-		SdlKeyboardButtonInput();
-		~SdlKeyboardButtonInput();
-
-		bool init(const std::string& device_path = "keyboard", int key_code = SDL_SCANCODE_SPACE) override;
-		void update() override;
-		void shutdown() override;
-
-		bool is_open() const override { return opened_; }
-		bool is_down() const override { return down_; }
-		bool was_pressed() const override { return pressed_; }
-		bool was_released() const override { return released_; }
-		const std::string& get_device_path() const override { return device_path_; }
-		int get_key_code() const override { return key_code_; }
-	};
-}
--- a/src/Core/Asset/ObjLoader.cpp
+++ b/src/Core/Asset/ObjLoader.cpp
--- a/src/Core/Asset/ObjLoader.h
+++ b/src/Core/Asset/ObjLoader.h
--- a/src/Core/Core/DepthBuffer.cpp
+++ b/src/Core/Core/DepthBuffer.cpp
--- a/src/Core/Core/DepthBuffer.h
+++ b/src/Core/Core/DepthBuffer.h
--- a/src/Core/Core/FrameBuffer.cpp
+++ b/src/Core/Core/FrameBuffer.cpp
--- a/src/Core/Core/FrameBuffer.h
+++ b/src/Core/Core/FrameBuffer.h
--- a/src/Core/Core/Renderer.cpp
+++ b/src/Core/Core/Renderer.cpp
--- a/src/Core/Core/Renderer.h
+++ b/src/Core/Core/Renderer.h
--- a/src/Core/Core/Timer.h
+++ b/src/Core/Core/Timer.h
--- a/src/Core/Draw2D/DrawContext.cpp
+++ b/src/Core/Draw2D/DrawContext.cpp
@ -6,7 +6,7 @@
 #include "Display.h"
 #include <algorithm>

-namespace Core
+namespace Gfx
 {
 	DrawContext::DrawContext(int32_t width, int32_t height)
 	{
--- a/Show More
+++ b/Show More