cmake_minimum_required(VERSION 3.16)
project(IMX6U-Game)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

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

set(ENGINE_SOURCES
    src/Asset/ObjLoader.cpp
    src/Asset/SpriteAssetLoader.cpp
    src/Core/DepthBuffer.cpp
    src/Core/FrameBuffer.cpp
    src/Core/Renderer.cpp
    game/src/app/TomGameApp.cpp
    game/src/components/SpriteAnimator.cpp
    game/src/audio/VoiceEffect.cpp
    game/src/audio/VoicePlayer.cpp
    game/src/audio/VoiceRecorder.cpp
    game/src/hardware/AudioInput.cpp
    game/src/hardware/AudioOutput.cpp
    game/src/hardware/ButtonInput.cpp
    game/src/systems/AnimationSystem.cpp
    src/Rasterizer/Rasterizer.cpp
    src/Rasterizer/SpriteRasterizer.cpp
    src/Rasterizer/TriangleRasterizer.cpp
    src/Scene/Camera.cpp
    src/Shading/BlinnPhongShader.cpp
)

set(ENGINE_INCLUDE_DIRS
    src/Platform
    src/Asset
    src/Core
    src/Math
    src/Rasterizer
    src/RenderData
    src/Scene
    src/Shading
    game/src/app
    game/src/audio
    game/src/components
    game/src/hardware
    game/src/systems
)

set(SOURCES
    src/main.cpp
    ${ENGINE_SOURCES}
)

if(USE_FRAMEBUFFER)
    list(APPEND SOURCES src/Platform/FBDisplay.cpp)
else()
    list(APPEND SOURCES src/Platform/SDLDisplay.cpp)
endif()

add_executable(IMX6U-Game ${SOURCES})

target_include_directories(IMX6U-Game PRIVATE ${ENGINE_INCLUDE_DIRS})

if(USE_FRAMEBUFFER)
    target_compile_definitions(IMX6U-Game PRIVATE USE_FRAMEBUFFER)
else()
    target_include_directories(IMX6U-Game PRIVATE
        libs/Win/SDL2/include
    )

    if(WIN32)
        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
            set(SDL2_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL2/lib/x64")
            set(SDL2_DLL "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL2/lib/x64/SDL2.dll")
            set(SDL2_IMAGE_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL_image/lib/x64")
            set(SDL2_IMAGE_DLL "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL_image/lib/x64/SDL2_image.dll")
        else()
            set(SDL2_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL2/lib/x86")
            set(SDL2_DLL "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL2/lib/x86/SDL2.dll")
            set(SDL2_IMAGE_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL_image/lib/x86")
            set(SDL2_IMAGE_DLL "${CMAKE_CURRENT_SOURCE_DIR}/libs/Win/SDL_image/lib/x86/SDL2_image.dll")
        endif()

        target_link_directories(IMX6U-Game PRIVATE ${SDL2_LIB_DIR})
        target_link_libraries(IMX6U-Game PRIVATE SDL2main SDL2)

        add_custom_command(TARGET IMX6U-Game POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_if_different
            "${SDL2_DLL}"
            "$<TARGET_FILE_DIR:IMX6U-Game>"
        )
    else()
        find_package(SDL2 REQUIRED)
        target_link_libraries(IMX6U-Game PRIVATE SDL2::SDL2)
    endif()

    find_package(SDL2_image QUIET)
endif()

if(UNIX)
    target_link_libraries(IMX6U-Game PRIVATE asound)
endif()

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_ANIMATION_TEST_SOURCES
        game/tests/manual/SpriteAnimationTest.cpp
        ${ENGINE_SOURCES}
        src/Platform/SDLDisplay.cpp
    )

    if(WIN32)
        add_executable(SpriteAnimationTest ${SPRITE_ANIMATION_TEST_SOURCES})
        target_include_directories(SpriteAnimationTest PRIVATE
            ${ENGINE_INCLUDE_DIRS}
            libs/Win/SDL2/include
        )
        target_link_directories(SpriteAnimationTest PRIVATE ${SDL2_LIB_DIR})
        target_link_libraries(SpriteAnimationTest PRIVATE SDL2main SDL2)

        add_custom_command(TARGET SpriteAnimationTest POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_if_different
            "${SDL2_DLL}"
            "$<TARGET_FILE_DIR:SpriteAnimationTest>"
        )
    else()
        add_executable(SpriteAnimationTest ${SPRITE_ANIMATION_TEST_SOURCES})
        target_include_directories(SpriteAnimationTest PRIVATE ${ENGINE_INCLUDE_DIRS})
        target_link_libraries(SpriteAnimationTest PRIVATE SDL2::SDL2 asound)
    endif()

    if(MSVC AND TARGET SpriteAnimationTest)
        target_compile_options(SpriteAnimationTest PRIVATE /utf-8 /W3)
    endif()

    set(SPRITE_ASSET_TOOL_SOURCES
        game/tools/asset_pipeline/SpriteAssetTool.cpp
        src/Asset/SpriteAssetLoader.cpp
    )

    if(WIN32)
        add_executable(SpriteAssetTool ${SPRITE_ASSET_TOOL_SOURCES})
        target_include_directories(SpriteAssetTool PRIVATE
            src/Asset
            src/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/Asset
            src/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 $<TARGET_FILE:SpriteAssetTool>
                --batch
                "${CMAKE_CURRENT_SOURCE_DIR}/game/assets/raw"
                "${CMAKE_CURRENT_SOURCE_DIR}/game/assets/sprites"
                --preset tom-800x480
            DEPENDS SpriteAssetTool
            COMMENT "Converting PNG assets to board-ready .sprite files"
            VERBATIM
        )
    endif()
endif()