structural changes

CMakeLists.txt

@@ -1,16 +1,21 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.15)
 
 project(SDL_Minigame)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+set(PROJECT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
+set(PROJECT_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
+set(PROJECT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
 
 add_subdirectory(lib/SDL EXCLUDE_FROM_ALL)
 add_subdirectory(lib/SDL_image EXCLUDE_FROM_ALL)
+add_subdirectory(lib/zlib EXCLUDE_FROM_ALL)
 add_subdirectory(lib/libpng EXCLUDE_FROM_ALL)
 
 include_directories(
+    ${PROJECT_INCLUDE_DIR}
     ${SDL2_INCLUDE_DIRS}
     ${SDL2_IMAGE_INCLUDE_DIRS}
     ${ZLIB_IMAGE_INCLUDE_DIRS}
@@ -20,11 +25,10 @@ file(GLOB_RECURSE SOURCES src/*.cpp)
 add_executable(${PROJECT_NAME} ${SOURCES})
 
 target_link_libraries(${PROJECT_NAME} PRIVATE
-    SDL2
+    SDL2::SDL2
     SDL2_image
     ${ZLIB_LIBRARY}
     ${PNG_LIBRARIES}
 )
 
-# Copy assets (if any) to build directory during build
-file(COPY src/assets DESTINATION ${CMAKE_BINARY_DIR})
+file(COPY ${PROJECT_SOURCE_DIR}/assets DESTINATION ${PROJECT_BINARY_DIR})