CMakeLists.txt

cmake_minimum_required(VERSION 3.5)
project(SDL_Gravity_Box LANGUAGES C CXX)

# Set output directories and other configurations
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Enable colors for diagnostics
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdiagnostics-color=always")

# Ensure a build type is set
if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE
      Debug
      CACHE STRING "Choose the type of build, options are: None Debug Release"
            FORCE)
endif()

# OpenGL preferences
set(OpenGL_GL_PREFERENCE GLVND)

# add sdl2 cmake module
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/sdl2)

# Find and include required packages
find_package(SDL2 REQUIRED)
find_package(SDL2_image REQUIRED)
find_package(OpenGL REQUIRED)
find_package(glm REQUIRED) # Add glm package

# SDL2_mixer configuration
find_package(PkgConfig REQUIRED)
pkg_search_module(SDL2_MIXER REQUIRED SDL2_mixer)

# Include directories for all packages
include_directories(
  ${SDL2_INCLUDE_DIRS} ${SDL2_MIXER_INCLUDE_DIRS} ${SDL2_IMAGE_INCLUDE_DIRS}
  ${OPENGL_INCLUDE_DIR} ${GLM_INCLUDE_DIRS} # Add glm include directory
)

# Native File Picker
add_subdirectory(src/inc/submodules/nfd)

# Set platform-specific libraries
set(LIBS SDL2 SDL2_mixer SDL2_image OpenGL glm nfd # Add glm to the libraries
)

if(WIN32)
  add_definitions(-D_CRT_SECURE_NO_WARNINGS)
elseif(UNIX)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic")
  # Link with dl for dynamic loading support (Linux-specific)
  set(LIBS ${LIBS} dl)
else()
  message(FATAL_ERROR "Unsupported platform")
endif()

# Glad library
add_library(glad "src/glad.c")

# Include and link the ImGui source files
set(IMGUI_DIR src/inc/submodules/imgui)
set(IMGUI_BACKENDS_DIR ${IMGUI_DIR}/backends)

set(IMGUI_SOURCES
    ${IMGUI_DIR}/imgui.cpp
    ${IMGUI_DIR}/imgui_demo.cpp
    ${IMGUI_DIR}/imgui_draw.cpp
    ${IMGUI_DIR}/imgui_tables.cpp
    ${IMGUI_DIR}/imgui_widgets.cpp
    ${IMGUI_BACKENDS_DIR}/imgui_impl_sdl2.cpp
    ${IMGUI_BACKENDS_DIR}/imgui_impl_opengl3.cpp)

include_directories(${IMGUI_DIR} ${IMGUI_BACKENDS_DIR})

# Include other necessary directories
include_directories(src/inc src/inc/vertx)

# Gather all source files
file(GLOB SOURCES "src/*.cpp" "src/*.c" "src/vertx/*.cpp" ${IMGUI_SOURCES})

# Define the executable
add_executable(SDL_Gravity_Box ${SOURCES})

# Link libraries
target_link_libraries(SDL_Gravity_Box ${LIBS})

# Copy the resources to the build directory
file(COPY "src/res" DESTINATION ${CMAKE_BINARY_DIR})
file(COPY "imgui.ini" DESTINATION ${CMAKE_BINARY_DIR})