PROGRAM=rsod
PROGRAM_DRMFREE=rsod-engine

INCLUDES=include/*.h
# Change the value of CXXSTD depending on what is supported by your compiler. Older compilers may require c++1z
CXXSTD=c++17

# SDL2
SDL2_VER=2.30.3
SDL2_DIR=SDL2-$(SDL2_VER)
SDL2_TAR=$(SDL2_DIR).tar.gz
SDL2_WIN_TAR=SDL2-devel-$(SDL2_VER)-mingw.tar.gz

# Bullet
BULLET_OPTIONS=-DUSE_DOUBLE_PRECISION=ON -DNO_OPENGL3=ON -DBUILD_CPU_DEMOS=OFF -DBUILD_OPENGL3_DEMOS=OFF -DBUILD_BULLET2_DEMOS=OFF -DBUILD_EXTRAS=OFF -DBUILD_UNIT_TESTS=OFF
BULLET_VER=3.09
BULLET_DIR=bullet3-$(BULLET_VER)
BULLET_TAR=$(BULLET_VER).tar.gz
BULLET_DYNAMICS=libBulletDynamics.a
BULLET_COLLISION=libBulletCollision.a
BULLET_LINEARMATH=libLinearMath.a
BULLET_LINKS=-l:$(BULLET_DYNAMICS) -l:$(BULLET_COLLISION) -l:$(BULLET_LINEARMATH)

# Object files.
OBJECTS_LIN=qm.o fdungeon.o inventory.o libs.o
OBJECTS_WIN=qm-win.o fdungeon-win.o inventory-win.o libs-win.o

LINCC := gcc -march=x86-64
LINCXX := $(CXX) -march=x86-64
#LINCXX := $(CXX) -m32
CXXFLAGS=-Iinclude -Isrc -I$(BULLET_DIR)/src -std=$(CXXSTD) -Wall -Wextra -Wfatal-errors
CXXDYNAMIC=$(LINCXX) $(CXXFLAGS) -O3 -o $(PROGRAM)-dynamic src/$(PROGRAM).cpp $(OBJECTS_LIN) -Wl,-rpath,. -L. -l:libSDL2.so -pthread -lsteam_api $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0)
MACCXX := clang++ -march=x86-64
WINCC := i686-w64-mingw32-gcc-posix -march=pentium4 -static-libgcc -Iinclude-win
WINCXX := i686-w64-mingw32-g++-posix -march=pentium4 -static-libgcc -static-libstdc++ -Iinclude-win
WIN_CMAKE_FLAGS=-DCMAKE_C_COMPILER=i686-w64-mingw32-gcc-win32 -DCMAKE_CXX_COMPILER=i686-w64-mingw32-g++-win32 -DCMAKE_C_COMPILER_WORKS=1 -DCMAKE_CXX_COMPILER_WORKS=1
MAC_BULLET_DYNAMICS=libBulletDynamics-mac.a
MAC_BULLET_COLLISION=libBulletCollision-mac.a
MAC_BULLET_LINEARMATH=libLinearMath-mac.a
MAC_BULLET_LINKS=$(MAC_BULLET_DYNAMICS) $(MAC_BULLET_COLLISION) $(MAC_BULLET_LINEARMATH)
WIN_BULLET_DYNAMICS=libBulletDynamics-win.a
WIN_BULLET_COLLISION=libBulletCollision-win.a
WIN_BULLET_LINEARMATH=libLinearMath-win.a
WIN_BULLET_LINKS=$(WIN_BULLET_DYNAMICS) $(WIN_BULLET_COLLISION) $(WIN_BULLET_LINEARMATH)
WEB_PREFIX=sudo docker run --rm -v $(shell pwd):/src -u emscripten trzeci/emscripten
WEB_FLAGS_LEGACY=-s TOTAL_MEMORY=134217728
WEB_FLAGS_NEW=-s INITIAL_MEMORY=134217728
WEB_FLAGS=$(WEB_FLAGS_LEGACY) -fno-rtti -fno-exceptions --llvm-lto 1 -s ELIMINATE_DUPLICATE_FUNCTIONS=1 -s "ENVIRONMENT='web'" -s USE_SDL=0 -s SIMD=0 -s WASM=0 -s "EXTRA_EXPORTED_RUNTIME_METHODS=['Pointer_stringify']" --preload-file data
WEB_SDL_OPT=--disable-render --disable-render-d3d --disable-directx --disable-video-vulkan --disable-filesystem --disable-diskaudio --disable-dummyaudio --disable-libudev --disable-haptic
WEB_SDL_CONFIGURE=emconfigure ../configure --host=asmjs-unknown-emscripten --disable-assembly --disable-threads --disable-cpuinfo $(WEB_SDL_OPT)
WEB_BULLET_DYNAMICS=libBulletDynamics-web.a
WEB_BULLET_COLLISION=libBulletCollision-web.a
WEB_BULLET_LINEARMATH=libLinearMath-web.a
WEB_BULLET_LINKS=$(WEB_BULLET_DYNAMICS) $(WEB_BULLET_COLLISION) $(WEB_BULLET_LINEARMATH)

default: $(PROGRAM_DRMFREE)

drmfree: $(PROGRAM_DRMFREE) $(PROGRAM_DRMFREE).exe

demo: $(PROGRAM)-demo $(PROGRAM)-demo.exe

# CodeBlocks target for GNU/Linux.
Release: $(PROGRAM_DRMFREE)
	mkdir -p bin/Release
	cp -f $(PROGRAM_DRMFREE) bin/Release/rsod

$(PROGRAM_DRMFREE): $(OBJECTS_LIN) $(BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	# Building DRM-free version for GNU/Linux with dynamic SDL.
	$(RM) libSDL2.a
	$(LINCXX) $(CXXFLAGS) -static-libgcc -static-libstdc++ -O3 -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) \
	-Wl,-rpath,. -L. -ldl -pthread -lSDL2 $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0)

$(PROGRAM)-static: $(OBJECTS_LIN) libSDL2.a $(BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	# Building DRM-free version for GNU/Linux with static SDL.
	$(LINCXX) $(CXXFLAGS) -static-libgcc -static-libstdc++ -O3 -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) libSDL2.a \
	-Wl,-rpath,. -L. -ldl -pthread $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0)

$(PROGRAM)-xr: $(OBJECTS_LIN) xr.o libSDL2.a $(BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	# Building OpenXR version for GNU/Linux.
	$(LINCXX) $(CXXFLAGS) -static-libgcc -static-libstdc++ -O3 -D__OPENXR__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) xr.o libSDL2.a \
	-Wl,-rpath,. -L. -ldl -pthread $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0) -lGLX -lopenxr_loader

$(PROGRAM)-dynamic: $(OBJECTS_LIN) src/$(PROGRAM).cpp $(INCLUDES)
	$(CXXDYNAMIC)

$(PROGRAM)-steam: $(OBJECTS_LIN) libSDL2.a $(BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	$(LINCXX) $(CXXFLAGS) -static-libgcc -static-libstdc++ -O3 -D__STEAM__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) libSDL2.a \
	-Wl,-rpath,. -L. -ldl -pthread -lsteam_api $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0)

debug: clean $(OBJECTS_LIN) $(BULLET_DYNAMICS) src/$(PROGRAM).cpp
	$(LINCXX) -Iinclude -Isrc -I$(BULLET_DIR)/src -std=$(CXXSTD) -Wall -Wextra -Wfatal-errors -g -D__DEBUG__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) \
	-Wl,-rpath,. -L. -ldl -pthread -lSDL2 $(BULLET_LINKS) $(shell pkg-config --libs gtk+-3.0)

lint:
	clang-tidy src/$(PROGRAM).cpp -checks=cert-*-cpp -- $(CXXDYNAMIC)

qm.o: include/qm.c
	$(LINCC) -std=c99 -Wall $(shell pkg-config --cflags gtk+-3.0) include/qm.c -c -o $@

qm-win.o: include/qm.c
	$(WINCC) -std=c99 -Wall include/qm.c -c -o $@

wfcgen: src/wfcgen.cpp
	$(LINCXX) -std=$(CXXSTD) -Wall -Wextra -Wfatal-errors -static-libgcc -static-libstdc++ -g -o $@ src/$@.cpp

obj2bin: src/obj2bin.cpp
	$(LINCXX) -std=$(CXXSTD) -Wall -Wextra -Wfatal-errors -static-libgcc -static-libstdc++ -g -o $@ src/$@.cpp

obj2anib: src/obj2anib.cpp
	$(LINCXX) -std=$(CXXSTD) -Wall -Wextra -Wfatal-errors -static-libgcc -static-libstdc++ -g -o $@ src/$@.cpp

$(PROGRAM)-demo: $(OBJECTS_LIN) libSDL2.a src/$(PROGRAM).cpp $(INCLUDES)
	$(LINCXX) $(CXXFLAGS) -static-libgcc -static-libstdc++ -O3 -D__STEAM__ -D__DEMO__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_LIN) libSDL2.a \
	-Wl,-rpath,. -L. -ldl -pthread -lsteam_api $(BULLET_LINKS)

$(PROGRAM)-demo.exe: $(OBJECTS_WIN) $(WIN_BULLET_DYNAMICS) SDL2.dll include-win/SDL2 src/$(PROGRAM).cpp $(INCLUDES)
	$(WINCXX) $(CXXFLAGS) -mwindows -O3 -D__STEAM__ -D__DEMO__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_WIN) \
	-L. -lmingw32 -l:SDL2.dll -l:libSDL2main.a -l:steam_api.dll $(WIN_BULLET_LINKS) \
	-static -lpthread

fdungeon.o: src/fdungeon.cpp include/avatar.h include/particle.h $(INCLUDES)
	$(LINCXX) $(CXXFLAGS) -O3 src/fdungeon.cpp -c -o $@

inventory.o: src/inventory.cpp $(INCLUDES) fdungeon.o
	$(LINCXX) $(CXXFLAGS) -O3 src/inventory.cpp -c -o $@

libs.o: src/libs.cpp include/tm_json.h
	$(LINCXX) $(CXXFLAGS) -O3 src/libs.cpp -c -o $@

xr.o: src/xr.cpp
	$(LINCXX) $(CXXFLAGS) -O3 src/xr.cpp -c -o $@

# Build SDL2 for Linux as compatibly as possible.
libSDL2.a: $(SDL2_DIR)
	rm -r -f $(SDL2_DIR)/build
	mkdir -p $(SDL2_DIR)/build
	export CC="$(LINCC)" ;\
	cd $(SDL2_DIR)/build; ../configure --disable-sndio --disable-esd \
	--disable-arts --disable-video-directfb --disable-rpath \
	--enable-alsa --enable-alsa-shared --enable-pulseaudio \
	--enable-pulseaudio-shared --enable-x11-shared --enable-sdl-dlopen \
	--disable-input-tslib CFLAGS="-O3" && make
	cp $(SDL2_DIR)/build/build/.libs/libSDL2.a $@
	touch $@

$(SDL2_DIR): $(SDL2_TAR)
	$(RM) -r $@
	tar xzvf $(SDL2_TAR) $@
	touch $@

$(SDL2_TAR):
	wget -c https://libsdl.org/release/$(SDL2_TAR)

$(PROGRAM_DRMFREE)-mac: qm-mac.o fdungeon-mac.o inventory-mac.o libs-mac.o SDL2.framework $(MAC_BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	# Building DRM-free version for Mac.
	$(MACCXX) $(CXXFLAGS) -O3 -o $@ src/$(PROGRAM).cpp qm-mac.o fdungeon-mac.o inventory-mac.o libs-mac.o \
	-F. -L. -Wl,-rpath,"." -framework SDL2 $(MAC_BULLET_LINKS) -ldl -pthread

libs-mac.o: src/libs.cpp include/tm_json.h
	$(MACCXX) $(CXXFLAGS) -O3 -o $@ src/libs.cpp -c

$(PROGRAM_DRMFREE).exe: $(OBJECTS_WIN) $(WIN_BULLET_DYNAMICS) SDL2.dll include-win/SDL2 src/$(PROGRAM).cpp $(INCLUDES)
	# Building DRM-free version for Windows.
	$(WINCXX) $(CXXFLAGS) -mwindows -O3 -o $@ src/$(PROGRAM).cpp $(OBJECTS_WIN) \
	-L. -lcomdlg32 -lmingw32 -l:SDL2.dll -l:libSDL2main.a $(WIN_BULLET_LINKS) \
	-static -lpthread

$(PROGRAM)-steam.exe: $(OBJECTS_WIN) $(WIN_BULLET_DYNAMICS) SDL2.dll include-win/SDL2 src/$(PROGRAM).cpp $(INCLUDES)
	$(WINCXX) $(CXXFLAGS) -mwindows -O3 -D__STEAM__ -o $@ src/$(PROGRAM).cpp $(OBJECTS_WIN) \
	-L. -lcomdlg32 -lmingw32 -l:SDL2.dll -l:libSDL2main.a -l:steam_api.dll $(WIN_BULLET_LINKS) \
	-static -lpthread

fdungeon-win.o: SDL2.dll include-win/SDL2 src/fdungeon.cpp include/avatar.h include/particle.h $(INCLUDES)
	$(WINCXX) $(CXXFLAGS) -O3 src/fdungeon.cpp -c -o $@

inventory-win.o: src/inventory.cpp $(INCLUDES) fdungeon-win.o
	$(WINCXX) $(CXXFLAGS) -O3 src/inventory.cpp -c -o $@

libs-win.o: libSDL2main.a SDL2.dll include-win/SDL2 src/libs.cpp include/tm_json.h
	$(WINCXX) $(CXXFLAGS) -O3 src/libs.cpp -c -o $@

include-win/SDL2: $(SDL2_WIN_TAR)
	$(RM) -r $@
	mkdir -p include-win
	cd include-win ;\
	tar xzvf ../$(SDL2_WIN_TAR) --strip-components=3 SDL2-$(SDL2_VER)/i686-w64-mingw32/include/SDL2
	touch $@

libSDL2main.a: $(SDL2_WIN_TAR)
	tar xzvf $(SDL2_WIN_TAR) --strip-components=3 SDL2-$(SDL2_VER)/i686-w64-mingw32/lib/$@
	touch $@

SDL2.dll: $(SDL2_WIN_TAR)
	tar xzvf $(SDL2_WIN_TAR) --strip-components=3 SDL2-$(SDL2_VER)/i686-w64-mingw32/bin/$@
	touch $@

$(SDL2_WIN_TAR):
	wget -c https://libsdl.org/release/$(SDL2_WIN_TAR)

html: libs-web.o libSDL2-web.a src/$(PROGRAM).cpp $(INCLUDES)
	mkdir -p $@
	$(WEB_PREFIX) emcc $(WEB_FLAGS) $(CXXFLAGS) --closure 1 -Oz -o $@/index.html src/$(PROGRAM).cpp libs-web.o libSDL2-web.a -lwebsocket.js

web: index-template.html web/index.js
	cp -f index-template.html $@/index.html
	cp -f favicon.ico $@
	touch $@

web/index.js: libs-web.o libSDL2-web.a src/$(PROGRAM).cpp $(INCLUDES)
	mkdir -p web
	$(WEB_PREFIX) emcc $(WEB_FLAGS) $(CXXFLAGS) --closure 1 -Oz -o $@ src/$(PROGRAM).cpp libs-web.o libSDL2-web.a -lwebsocket.js

html-bullet: libs-web.o libSDL2-web.a $(WEB_BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	mkdir -p $@
	$(WEB_PREFIX) emcc $(WEB_FLAGS) $(CXXFLAGS) -O3 -o $@/index.html src/$(PROGRAM).cpp libs-web.o libSDL2-web.a $(WEB_BULLET_LINKS) -lwebsocket.js

web-bullet: index-template.html web-bullet/index.js
	cp -f index-template.html $@/index.html
	cp -f favicon.ico $@
	touch $@

web-bullet/index.js: libs-web.o libSDL2-web.a $(WEB_BULLET_DYNAMICS) src/$(PROGRAM).cpp $(INCLUDES)
	mkdir -p web
	$(WEB_PREFIX) emcc $(WEB_FLAGS) $(CXXFLAGS) -O3 -o $@ src/$(PROGRAM).cpp libs-web.o libSDL2-web.a $(WEB_BULLET_LINKS) -lwebsocket.js

libs-web.o: src/libs.cpp include/tm_json.h
	$(WEB_PREFIX) emcc $(WEB_FLAGS) $(CXXFLAGS) -Oz -o $@ src/libs.cpp -c

libSDL2-web.a: $(SDL2_DIR)
	rm -r -f $(SDL2_DIR)/build
	mkdir -p $(SDL2_DIR)/build
	$(WEB_PREFIX) /bin/bash -c "cd $(SDL2_DIR)/build; $(WEB_SDL_CONFIGURE) CFLAGS=\"-Oz\" && emmake make"
	cp $(SDL2_DIR)/build/build/.libs/libSDL2.a $@
	touch $@

bullet: $(BULLET_DYNAMICS) $(WIN_BULLET_DYNAMICS)

$(BULLET_COLLISION): $(BULLET_DYNAMICS)

$(BULLET_LINEARMATH): $(BULLET_DYNAMICS)

$(BULLET_DYNAMICS): $(BULLET_DIR)
	#cd $(BULLET_DIR); ./build_cmake_pybullet_double.sh
	mkdir -p $(BULLET_DIR)/build_cmake
	cd $(BULLET_DIR)/build_cmake; \
	cmake $(BULLET_OPTIONS) -DCMAKE_BUILD_TYPE=Release .. && make
	mv $(BULLET_DIR)/build_cmake/src/BulletDynamics/$(BULLET_DYNAMICS) .
	mv $(BULLET_DIR)/build_cmake/src/BulletCollision/$(BULLET_COLLISION) .
	mv $(BULLET_DIR)/build_cmake/src/LinearMath/$(BULLET_LINEARMATH) .

$(WEB_BULLET_COLLISION): $(WEB_BULLET_DYNAMICS)

$(WEB_BULLET_LINEARMATH): $(WEB_BULLET_DYNAMICS)

$(WEB_BULLET_DYNAMICS): $(BULLET_DIR)
	mkdir -p $(BULLET_DIR)/build_cmake_web
	$(WEB_PREFIX) /bin/bash -c "cd $(BULLET_DIR)/build_cmake_web; emcmake cmake $(BULLET_OPTIONS) -DCMAKE_BUILD_TYPE=Release .. && emmake make"
	mv $(BULLET_DIR)/build_cmake_web/src/BulletDynamics/libBulletDynamics.a ./$(WEB_BULLET_DYNAMICS)
	mv $(BULLET_DIR)/build_cmake_web/src/BulletCollision/libBulletCollision.a ./$(WEB_BULLET_COLLISION)
	mv $(BULLET_DIR)/build_cmake_web/src/LinearMath/libLinearMath.a ./$(WEB_BULLET_LINEARMATH)

$(MAC_BULLET_COLLISION): $(MAC_BULLET_DYNAMICS)

$(MAC_BULLET_LINEARMATH): $(MAC_BULLET_DYNAMICS)

$(MAC_BULLET_DYNAMICS): $(BULLET_DIR)
	mkdir -p $(BULLET_DIR)/build_cmake_mac
	cd $(BULLET_DIR)/build_cmake_mac; \
	cmake $(BULLET_OPTIONS) -DCMAKE_BUILD_TYPE=Release .. && make
	mv $(BULLET_DIR)/build_cmake_mac/src/BulletDynamics/libBulletDynamics.a ./$(MAC_BULLET_DYNAMICS)
	mv $(BULLET_DIR)/build_cmake_mac/src/BulletCollision/libBulletCollision.a ./$(MAC_BULLET_COLLISION)
	mv $(BULLET_DIR)/build_cmake_mac/src/LinearMath/libLinearMath.a ./$(MAC_BULLET_LINEARMATH)

$(WIN_BULLET_COLLISION): $(WIN_BULLET_DYNAMICS)

$(WIN_BULLET_LINEARMATH): $(WIN_BULLET_DYNAMICS)

$(WIN_BULLET_DYNAMICS): $(BULLET_DIR)
	mkdir -p $(BULLET_DIR)/build_cmake_win
	cd $(BULLET_DIR)/build_cmake_win; \
	cmake $(BULLET_OPTIONS) $(WIN_CMAKE_FLAGS) -DCMAKE_BUILD_TYPE=Release .. && make
	mv $(BULLET_DIR)/build_cmake_win/src/BulletDynamics/libBulletDynamics.a ./$(WIN_BULLET_DYNAMICS)
	mv $(BULLET_DIR)/build_cmake_win/src/BulletCollision/libBulletCollision.a ./$(WIN_BULLET_COLLISION)
	mv $(BULLET_DIR)/build_cmake_win/src/LinearMath/libLinearMath.a ./$(WIN_BULLET_LINEARMATH)

$(BULLET_DIR): $(BULLET_TAR)
	$(RM) -r $@
	tar xzvf $(BULLET_TAR) $@
	touch $@

$(BULLET_TAR):
	wget -c https://github.com/bulletphysics/bullet3/archive/$(BULLET_TAR)

clean:
	$(RM) wfcgen obj2bin obj2anib debug $(PROGRAM_DRMFREE) $(PROGRAM)-xr $(PROGRAM)-dynamic $(PROGRAM)-steam $(PROGRAM)-demo $(OBJECTS_LIN) xr.o \
	$(PROGRAM).exe $(PROGRAM)-steam.exe $(PROGRAM_DRMFREE).exe $(PROGRAM)-demo.exe $(OBJECTS_WIN) libs-web.o