CMakeLists.txt

cmake_minimum_required(VERSION 3.20)
project(dxball_reconstruction VERSION 0.1.0 LANGUAGES C CXX)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

add_library(dxball_core SHARED
    # Storage, loading, and low-level drawing
    src/allocator.c
    src/random.c
    src/allocator_host.c
    src/cpp_allocator.cpp
    src/boards.c
    src/resources.c
    src/rotation.c
    src/raster.cpp
    src/list_initializers.cpp
    src/bitmap.c

    # Gameplay and entity controllers
    src/gameplay.c
    src/effects.c
    src/particles.c
    src/bonuses.c
    src/geometry.c
    src/paddle.c
    src/round.c
    src/trig.c
    src/balls.c
    src/core.c

    # Frame dispatch and presentation
    src/runtime.c
    src/display.c
    src/device.c

    # Platform, screens, and audio
    src/platform.c
    src/platform_host.c
    src/startup.c
    src/ui.c
    src/intro.c
    src/gameover.c
    src/editor.c
    src/midi.cpp
    src/music.cpp
    src/file.c
    src/memory.c
    src/sound.c
)
if(UNIX)
    target_sources(dxball_core PRIVATE src/runtime_text_host.c src/directx_factory_host.c)
    target_link_libraries(dxball_core PRIVATE m)
    # Keep recovered C++ allocation inside this image's existing heap boundary.
    target_link_options(dxball_core PRIVATE
        "LINKER:--version-script=${CMAKE_CURRENT_SOURCE_DIR}/config/native-symbols.map")
    set_property(TARGET dxball_core APPEND PROPERTY LINK_DEPENDS
        "${CMAKE_CURRENT_SOURCE_DIR}/config/native-symbols.map")
endif()
if(WIN32)
    target_link_libraries(dxball_core PRIVATE dsound ddraw winmm)
endif()
if(MINGW)
    # Keep compiler runtime dependencies in the DLL, including the POSIX
    # toolchain's pthread support pulled in by the static C++ runtime.
    target_link_options(dxball_core PRIVATE -static -static-libgcc -static-libstdc++)
endif()
target_include_directories(dxball_core PUBLIC src)
set_target_properties(dxball_core PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON)
if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
    target_compile_options(dxball_core PRIVATE -Wall -Wextra -Wpedantic -Werror)
    # VC4 new can return NULL; retain the observed terminal allocation branch.
    set_source_files_properties(src/list_initializers.cpp PROPERTIES
        COMPILE_OPTIONS -fcheck-new)
endif()
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
    # The original tile mapper leaves its result unset outside tiles 0..22.
    set_source_files_properties(src/boards.c PROPERTIES
        COMPILE_OPTIONS -Wno-error=maybe-uninitialized)
    # The original lightning controller requires an eligible tile in its scan.
    set_source_files_properties(src/display.c PROPERTIES
        COMPILE_OPTIONS -Wno-error=maybe-uninitialized)
    # The WAV parser can return data before fmt; loading requires fmt first.
    set_source_files_properties(src/sound.c PROPERTIES
        COMPILE_OPTIONS -Wno-error=maybe-uninitialized)
endif()

add_executable(dxball_resources src/resource_inspector.c)
target_link_libraries(dxball_resources PRIVATE dxball_core)
if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
    target_compile_options(dxball_resources PRIVATE -Wall -Wextra -Wpedantic -Werror)
endif()

add_executable(dxball_boards src/board_inspector.c)
target_link_libraries(dxball_boards PRIVATE dxball_core)
if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
    target_compile_options(dxball_boards PRIVATE -Wall -Wextra -Wpedantic -Werror)
endif()

if(WIN32)
    add_executable(dxball WIN32 src/windows_entry.c src/windows_adapter.c)
    set(DXBALL_RESOURCE_OBJECT "" CACHE FILEPATH "Private verified game resource object")
    if(DXBALL_RESOURCE_OBJECT)
        if(NOT EXISTS "${DXBALL_RESOURCE_OBJECT}")
            message(FATAL_ERROR "DXBALL_RESOURCE_OBJECT does not exist")
        endif()
        set_source_files_properties("${DXBALL_RESOURCE_OBJECT}" PROPERTIES EXTERNAL_OBJECT TRUE)
        target_sources(dxball PRIVATE "${DXBALL_RESOURCE_OBJECT}")
    endif()
    # Diagnostic tools are built only when their target is requested.
    add_executable(dxball_state_reader EXCLUDE_FROM_ALL tests/windows_state_reader.c)
    add_executable(dxball_ddraw_loss_probe EXCLUDE_FROM_ALL tests/windows_ddraw_loss_probe.c)
    add_executable(dxball_resource_reader EXCLUDE_FROM_ALL tests/windows_resource_reader.c)
    foreach(probe IN ITEMS dxball_state_reader dxball_ddraw_loss_probe dxball_resource_reader)
        set_target_properties(${probe} PROPERTIES C_STANDARD 90 C_STANDARD_REQUIRED ON C_EXTENSIONS OFF)
        if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
            target_compile_options(${probe} PRIVATE -Wall -Wextra -Wpedantic -Werror)
        endif()
    endforeach()
    target_link_libraries(dxball_state_reader PRIVATE user32)
    target_link_libraries(dxball_ddraw_loss_probe PRIVATE ddraw user32)
    target_link_libraries(dxball_resource_reader PRIVATE user32 gdi32)
    target_link_libraries(dxball PRIVATE dxball_core winmm user32 gdi32)
    if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
        target_compile_options(dxball PRIVATE -Wall -Wextra -Wpedantic -Werror)
    endif()
endif()