cmake_minimum_required(VERSION 3.2)
project(Graphite)

list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/bin/runtime/bin)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/bin/runtime)

function(SetMSVCOutput output)
    if(MSVC)
        foreach(OUTPUTCONFIG ${CMAKE_CONFIGURATION_TYPES})
            string(TOUPPER ${OUTPUTCONFIG} OUTPUTCONFIG)
            set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${output})
            set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${output})
        endforeach(OUTPUTCONFIG CMAKE_CONFIGURATION_TYPES)
    endif()
endfunction()

SetMSVCOutput(${CMAKE_CURRENT_SOURCE_DIR}/bin/runtime/bin)

set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)

find_package(Vulkan)
find_package(OpenGL)

set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

if(${VULKAN_FOUND})
    option(ENABLE_VULKAN "Enable Vulkan support" ON)
endif()

if(${OPENGL_FOUND})
    option(ENABLE_OPENGL45 "Enable OpenGL 4.5 support" ON)
    option(ENABLE_OPENGLES2 "Enable OpenGL ES 2 support" ON)
endif()

option(BUILD_EDITOR "Build editor" OFF)
option(INCLUDE_LICENSES "Include licenses" ON)

include(paths.cmake)

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

add_subdirectory(3rdparty)

set(GAME_NAME "testgame") #used only for the executable name atm
set(GAME_FOLDER "game") #the game folder used for asset lookups

add_definitions(-DGAME_NAME="${GAME_NAME}" -DGAME_FOLDER="${GAME_FOLDER}" -DGLM_ENABLE_EXPERIMENTAL)

set(CMAKE_CXX_STANDARD 14) #needed for some things like better auto type deduction
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,bin")
set(CMAKE_DEBUG_POSTFIX "") #stop libraries from vendor messing with our library names

if(MSVC)
	add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()

if(NOT EMSCRIPTEN)
    if(WIN32)
        add_definitions(-DWINDOWS)
        set(RUNTIME_EXPORT_STRING win32)
    endif()

    if(APPLE)
        add_definitions(-DMACOS)
        set(RUNTIME_EXPORT_STRING macos)
    endif()

    if(UNIX)
        add_definitions(-DLINUX)
        set(RUNTIME_EXPORT_STRING linux)
    endif()

	add_definitions(-DGLFW_INCLUDE_NONE)

	if(CMAKE_CXX_COMPILER_ID MATCHES "GCC")
		set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -Wextra -Wold-style-cast -Wno-missing-braces")
    endif()
	
    if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wfloat-conversion -Wextra-semi -Wdouble-promotion -Wshadow -Wno-missing-braces -DGLFW_INCLUDE_NONE")
    endif()
else()
    add_definitions(-DEMSCRIPTEN)
    set(RUNTIME_EXPORT_STRING emscripten)
endif()

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    add_definitions(-DVDEBUG)
endif()

add_subdirectory(engine)
add_subdirectory(dist)

if(BUILD_EDITOR)
    add_subdirectory(editor)
endif()

add_custom_target(runtime_zip
        WORKING_DIRECTORY
        ${CMAKE_CURRENT_SOURCE_DIR}/bin/runtime
        COMMAND
        ${CMAKE_COMMAND} -E tar "cf" "${CMAKE_CURRENT_SOURCE_DIR}/bin/runtime-${RUNTIME_EXPORT_STRING}.zip" --format=zip
        *)