application separation

CMakeLists.txt

@@ -7,14 +7,16 @@ list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 # dependencies
-find_package(SDL2 REQUIRED)
-find_package(SDL2_image REQUIRED)
-find_package(SDL2_ttf REQUIRED)
+find_package(SDL2 REQUIRED GLOBAL)
+find_package(SDL2_image REQUIRED GLOBAL)
+find_package(SDL2_ttf REQUIRED GLOBAL)
 
 if (NOT CMAKE_BUILD_TYPE)
         set(CMAKE_BUILD_TYPE Debug)
 endif ()
 
+set(TOWNENGINE_TARGET townengine CACHE INTERNAL "")
+set(TOWNENGINE_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE INTERNAL "")
 
 set(PHYSFS_BUILD_SHARED FALSE)
 set(PHYSFS_DISABLE_INSTALL TRUE)
@@ -49,29 +51,16 @@ set(TOWNENGINE_SOURCE_FILES
 
         ${SYSTEM_SOURCE_FILES}
 )
-
-set(GAME_SOURCE_FILES
-        src/game_api.h
-
-        src/game/game.c src/game/game.h
-        src/game/state.h
-
-        src/game/player.c src/game/player.h
-        src/game/world.c src/game/world.h
-
-        src/game/scenes/scene.c src/game/scenes/scene.h
-        src/game/scenes/title.c src/game/scenes/title.h
-        src/game/scenes/ingame.c src/game/scenes/ingame.h
-)
+list(TRANSFORM TOWNENGINE_SOURCE_FILES PREPEND ${TOWNENGINE_DIR}/)
 
 # base engine code, reused for games and tools
-add_library(${PROJECT_NAME} ${TOWNENGINE_SOURCE_FILES})
-source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${TOWNENGINE_SOURCE_FILES})
+add_library(${TOWNENGINE_TARGET} ${TOWNENGINE_SOURCE_FILES})
+source_group(TREE ${TOWNENGINE_DIR} FILES ${TOWNENGINE_SOURCE_FILES})
 
-set_target_properties(${PROJECT_NAME} PROPERTIES
-                                      C_STANDARD 11
-                                      C_STANDARD_REQUIRED ON
-                                      C_EXTENSIONS ON) # extensions are required by stb_ds.h
+set_target_properties(${TOWNENGINE_TARGET} PROPERTIES
+                                           C_STANDARD 11
+                                           C_STANDARD_REQUIRED ON
+                                           C_EXTENSIONS ON) # extensions are required by stb_ds.h
 
 # distribution definitions
 set(ORGANIZATION_NAME "wanp" CACHE STRING
@@ -161,18 +150,18 @@ endfunction()
 function(link_and_include_deps target)
         # header-only libraries should be marked as "system includes"
         # to suppress compiler warnings in their code (it's not my problem after all)
-        target_include_directories(${target}
-                SYSTEM
-                PRIVATE
+        set(THIRD_PARTY_INCLUDES
                 third-party/physfs/src
                 third-party/physfs/extras
                 third-party/libxm/include
                 third-party/glad/include
                 third-party/stb
         )
+        list(TRANSFORM THIRD_PARTY_INCLUDES PREPEND ${TOWNENGINE_DIR}/)
+        target_include_directories(${target} SYSTEM PRIVATE ${THIRD_PARTY_INCLUDES})
 
         # allow access to headers from any point in source tree
-        target_include_directories(${target} PRIVATE ./)
+        target_include_directories(${target} PRIVATE ${TOWNENGINE_DIR})
 
         target_link_libraries(${target} PUBLIC
                                         SDL2::SDL2
@@ -197,7 +186,7 @@ function(use_townengine target)
 
         # third-party libraries
         target_link_libraries(${target} PUBLIC
-                                        ${PROJECT_NAME}
+                                        ${TOWNENGINE_TARGET}
                                         SDL2::SDL2
                                         SDL2::SDL2main
                                         SDL2_image::SDL2_image
@@ -214,11 +203,10 @@ function(use_townengine target)
         )
 endfunction()
 
-give_options(${PROJECT_NAME})
-link_and_include_deps(${PROJECT_NAME})
+give_options(${TOWNENGINE_TARGET})
+link_and_include_deps(${TOWNENGINE_TARGET})
 
-add_executable(game ${GAME_SOURCE_FILES})
-use_townengine(game)
+add_subdirectory(apps/testgame)
 
 # zip up assets
 # currently, you must run cmake from the project root dir for this to work correctly