partially done work on total source tree rework, separation of engine context and game context, generalization of renderer for different backends as well as web platform target
This commit is contained in:
@ -3,7 +3,10 @@ cmake_minimum_required(VERSION 3.21)
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project(townengine LANGUAGES C)
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# SDL dependencies
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find_package(SDL2 REQUIRED GLOBAL)
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# for whatever reason Emscripten has SDL2 config, but not actual SDL2 port by default
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if(NOT EMSCRIPTEN)
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find_package(SDL2 REQUIRED GLOBAL)
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endif()
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# CMake actually has no default configuration and it's toolchain file dependent, set debug if not specified
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if(NOT CMAKE_BUILD_TYPE)
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@ -19,6 +22,14 @@ set(TWN_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE INTERNAL "")
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option(TWN_FEATURE_DYNLIB_GAME "Enable dynamic library loading support" ON)
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option(TWN_ARCHIVE_DATA "Enable archival of assets" OFF)
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# todo: figure out how to compile for dynamic linking instead
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if(EMSCRIPTEN)
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if(TWN_FEATURE_DYNLIB_GAME)
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message(WARNING "TWN_FEATURE_DYNLIB_GAME is set, but not supported - it is turned off")
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set(TWN_FEATURE_DYNLIB_GAME OFF CACHE INTERNAL "")
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endif()
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endif()
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# add -fPIC globally so that it's linked well
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add_compile_options($<$<BOOL:${TWN_FEATURE_DYNLIB_GAME}>:-fPIC>)
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@ -37,8 +48,8 @@ add_subdirectory(third-party/physfs SYSTEM)
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add_subdirectory(third-party/libxm SYSTEM)
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if(UNIX)
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set(SYSTEM_SOURCE_FILES townengine/system/linux/elf.c)
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if(LINUX)
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set(SYSTEM_SOURCE_FILES src/system/linux/elf.c)
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else()
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set(SYSTEM_SOURCE_FILES)
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endif()
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@ -46,22 +57,22 @@ endif()
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set(TWN_THIRD_PARTY_SOURCE_FILES
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third-party/physfs/extras/physfsrwops.c
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third-party/stb/stb_vorbis.c
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third-party/glad/src/glad.c)
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$<$<NOT:$<BOOL:${EMSCRIPTEN}>>:third-party/glad/src/glad.c>)
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set(TWN_SOURCE_FILES
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townengine/twn_loop.c
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townengine/twn_main.c
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townengine/config.h
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townengine/context/context.c townengine/context.h
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townengine/audio/audio.c townengine/audio.h
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townengine/util.c townengine/util.h
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townengine/rendering.c townengine/rendering.h
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townengine/input/input.c townengine/input.h
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townengine/camera.c townengine/camera.h
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townengine/textures/textures.c
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townengine/twn_game_object.c
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src/twn_loop.c
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src/twn_main.c
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src/twn_context.c include/twn_context.h
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src/twn_audio.c include/twn_audio.h
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src/twn_util.c include/twn_util.h
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src/twn_rendering.c include/twn_rendering.h
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src/twn_input.c include/twn_input.h
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src/twn_camera.c include/twn_camera.h
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src/twn_textures.c include/twn_textures.c
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src/twn_game_object.c
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$<$<NOT:$<BOOL:${TWN_FEATURE_DYNLIB_GAME}>>:townengine/twn_main.c>
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# for dynamic load based solution main is compiled in a separate target
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$<$<NOT:$<BOOL:${TWN_FEATURE_DYNLIB_GAME}>>:src/twn_main.c>
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${SYSTEM_SOURCE_FILES})
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@ -79,13 +90,13 @@ endif()
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source_group(TREE ${TWN_ROOT_DIR} FILES ${TWN_SOURCE_FILES})
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set_target_properties(${TWN_TARGET} PROPERTIES
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C_STANDARD 11
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C_STANDARD_REQUIRED ON
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C_EXTENSIONS ON) # extensions are required by stb_ds.h
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C_STANDARD 11
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C_STANDARD_REQUIRED ON
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C_EXTENSIONS ON) # extensions are required by stb_ds.h
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# precompile commonly used not-so-small headers
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target_precompile_headers(${TWN_TARGET} PRIVATE
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third-party/glad/include/glad/glad.h
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$<$<NOT:$<BOOL:${EMSCRIPTEN}>>:third-party/glad/include/glad/glad.h>
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third-party/stb/stb_ds.h)
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# distribution definitions, set them with -DX=X in cli
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@ -104,7 +115,8 @@ function(give_options_without_warnings target)
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-ffp-contract=fast
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-fno-signed-zeros
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-fno-trapping-math
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-freciprocal-math)
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-freciprocal-math
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$<$<BOOL:${EMSCRIPTEN}>:-sUSE_SDL=2>)
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set(BUILD_FLAGS_RELEASE
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-O3
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@ -114,8 +126,7 @@ function(give_options_without_warnings target)
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-fdata-sections
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-ffunction-sections
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-funroll-loops
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-fomit-frame-pointer
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$<$<STREQUAL:${CMAKE_C_COMPILER_ID},Gnu>:-fallow-store-data-races>)
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-fomit-frame-pointer)
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set(BUILD_FLAGS_DEBUG
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-O0
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@ -124,7 +135,8 @@ function(give_options_without_warnings target)
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-fno-omit-frame-pointer
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-fstack-protector-all
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-fsanitize=undefined
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-fsanitize=address)
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-fsanitize=address
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$<$<BOOL:${EMSCRIPTEN}>:-gsource-map>)
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target_compile_options(${target} PRIVATE
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${BUILD_FLAGS}
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@ -179,9 +191,9 @@ function(include_deps target)
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third-party/physfs/src
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third-party/physfs/extras
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third-party/libxm/include
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third-party/glad/include
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third-party/stb
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third-party/x-watcher)
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third-party/x-watcher
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$<$<NOT:$<BOOL:${EMSCRIPTEN}>>:third-party/glad/include>)
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list(TRANSFORM THIRD_PARTY_INCLUDES PREPEND ${TWN_ROOT_DIR}/)
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target_include_directories(${target} SYSTEM PRIVATE ${THIRD_PARTY_INCLUDES})
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@ -193,7 +205,7 @@ endfunction()
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function(link_deps target)
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target_link_libraries(${target} PUBLIC
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SDL2::SDL2
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$<$<NOT:$<BOOL:${EMSCRIPTEN}>>:SDL2::SDL2>
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physfs-static
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xms)
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endfunction()
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@ -205,14 +217,14 @@ function(use_townengine target sources output_directory data_dir)
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add_library(${target}_game SHARED ${sources})
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give_options(${target}_game)
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include_deps(${target}_game)
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target_link_libraries(${target}_game PUBLIC SDL2::SDL2 ${TWN_TARGET})
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target_link_libraries(${target}_game PUBLIC $<$<NOT:$<BOOL:${EMSCRIPTEN}>>:SDL2::SDL2> ${TWN_TARGET})
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set_target_properties(${target}_game PROPERTIES
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OUTPUT_NAME game
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LIBRARY_OUTPUT_DIRECTORY ${output_directory}
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RUNTIME_OUTPUT_DIRECTORY ${output_directory})
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# launcher binary, loads game and engine shared library
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add_executable(${target}_app ${TWN_ROOT_DIR}/townengine/twn_main.c)
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add_executable(${target}_app ${TWN_ROOT_DIR}/src/twn_main.c)
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# todo: copy instead?
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# put libtownengine.so alongside the binary
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@ -225,7 +237,16 @@ function(use_townengine target sources output_directory data_dir)
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set_target_properties(${target}_app PROPERTIES
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OUTPUT_NAME launcher
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LIBRARY_OUTPUT_DIRECTORY ${output_directory})
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LIBRARY_OUTPUT_DIRECTORY ${output_directory}
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RUNTIME_OUTPUT_DIRECTORY ${output_directory})
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if(EMSCRIPTEN)
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set_target_properties(${target}_app PROPERTIES
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SUFFIX .html)
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endif()
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target_compile_options(${target}_app PRIVATE
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$<$<BOOL:${EMSCRIPTEN}>:--shell-file ${TWN_ROOT_DIR}/shell_minimal.html>)
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# system libraries
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find_library(MATH_LIBRARY m)
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@ -236,10 +257,8 @@ function(use_townengine target sources output_directory data_dir)
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give_options(${target}_app)
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include_deps(${target}_app)
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link_deps(${target}_app)
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target_link_libraries(${target}_app PUBLIC ${TWN_TARGET})
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set_target_properties(${target}_app PROPERTIES
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RUNTIME_OUTPUT_DIRECTORY ${output_directory})
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target_link_libraries(${target}_app PUBLIC ${TWN_TARGET})
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if(WIN32)
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# copy dlls for baby windows
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add_custom_command(TARGET ${target}_app POST_BUILD
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@ -297,5 +316,5 @@ endif()
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# move compie_commands.json into root directory so that it plays nicer with code editors without any configuration
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add_custom_target(copy-compile-commands ALL
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${CMAKE_COMMAND} -E copy_if_different ${CMAKE_BINARY_DIR}/compile_commands.json
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${TWN_ROOT_DIR})
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${CMAKE_COMMAND} -E copy_if_different ${CMAKE_BINARY_DIR}/compile_commands.json
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${TWN_ROOT_DIR})
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