Add and use GameAPI submodule

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "dependencies/RSDKv5"]
 	path = dependencies/RSDKv5
 	url = https://github.com/Rubberduckycooly/RSDKv5-Decompilation
+[submodule "dependencies/GameAPI"]
+	path = dependencies/GameAPI
+	url = https://github.com/RSDKModding/RSDKv5-GameAPI

CMakeLists.txt

@@ -36,15 +36,22 @@ option(GAME_INCLUDE_EDITOR "Whether or not to include editor functions. Defaults
 
 option(GAME_INCREMENTAL_BUILD "Whether or not to build all objects separately (for quicker dev-->build iterations). Defaults to false." OFF)
 
+set(GAMEAPI_PATH dependencies/GameAPI CACHE STRING "The path to look for GameAPI.")
+
+set(GAME_TYPE 1)
+set(GAME_CUSTOMLINKLOGIC ON)
+
 if(GAME_INCREMENTAL_BUILD)
     include(${GAME_NAME}/Objects.cmake)
     set(GAME_SOURCES
-        ${GAME_NAME}/Game.c
+        ${GAMEAPI_PATH}/C/GameAPI/Game.c
+        ${GAME_NAME}/SonicMania.c
         ${GENERATED_SOURCES}
     )
 else()
     set(GAME_SOURCES
-        ${GAME_NAME}/Game.c
+        ${GAMEAPI_PATH}/C/GameAPI/Game.c
+        ${GAME_NAME}/SonicMania.c
         ${GAME_NAME}/Objects/All.c
     )
 endif()
@@ -56,6 +63,7 @@ else()
 endif()
 
 target_include_directories(${GAME_NAME} PRIVATE
+    ${GAMEAPI_PATH}/C/GameAPI/
     ${GAME_NAME}/
     ${GAME_NAME}/Objects/
 )
@@ -72,7 +80,10 @@ if(WITH_RSDK)
     add_subdirectory(${RSDK_PATH})
 
     if(GAME_STATIC)
-        target_include_directories(RetroEngine PRIVATE ${GAME_NAME}/)
+        target_include_directories(RetroEngine PRIVATE
+		    ${GAMEAPI_PATH}/C/GameAPI/
+		    ${GAME_NAME}/
+		)
         target_link_libraries(RetroEngine ${GAME_NAME})
     endif()
 else()
@@ -88,9 +99,12 @@ else()
         RETRO_MOD_LOADER_VER=${RETRO_MOD_LOADER_VER}
 
         GAME_INCLUDE_EDITOR=$<BOOL:${GAME_INCLUDE_EDITOR}>
+        GAME_VERSION=${GAME_VERSION}
 
         MANIA_PREPLUS=$<BOOL:${MANIA_PREPLUS}>
         MANIA_FIRST_RELEASE=$<BOOL:${MANIA_FIRST_RELEASE}>
-        GAME_VERSION=${GAME_VERSION}
+
+        GAME_TYPE=${GAME_TYPE}
+        GAME_CUSTOMLINKLOGIC=$<BOOL:${GAME_CUSTOMLINKLOGIC}>
     )
 endif()

Makefile

@@ -87,6 +87,8 @@ endif
 
 DEFINES += -DRETRO_STANDALONE=1
 DEFINES += -DRETRO_REVISION=$(RSDK_REVISION)
+DEFINES += -DGAME_TYPE=1
+DEFINES += -DGAME_CUSTOMLINKLOGIC=1
 
 CFLAGS_ALL += $(CFLAGS) \
 			   -fsigned-char 
@@ -99,11 +101,13 @@ CXXFLAGS_ALL += $(CXXFLAGS) \
 LDFLAGS_ALL = $(LDFLAGS)
 
 GAME_INCLUDES = \
-	-I./$(GAME_NAME)/   		\
+	-I../dependencies/GameAPI/C/GameAPI/        \
+	-I./$(GAME_NAME)/                           \
 	-I./$(GAME_NAME)/Objects/
 
 GAME_SOURCES = \
-	$(GAME_NAME)/Game
+	../dependencies/GameAPI/C/GameAPI/          \
+	$(GAME_NAME)/SonicMania                     \
 
 ifeq ($(GAME_ALLC),1)
 GAME_SOURCES += $(GAME_NAME)/Objects/All