LIBGL := -lGL -lGLU
LIBSDL := `sdl-config --libs`
LIBS := ${LIBSDL} ${LIBGL}

OPTFLAGS := -O2
DBGFLAGS := -ggdb
PRFFLAGS := ${DBGFLAGS} -pg

#CXX := g++
CXXFLAGS := -Wall -pedantic -ansi ${DBGFLAGS}


SRCS := entityManager.cpp
SRCS += game.cpp
SRCS += main.cpp
SRCS += mathw.cpp
SRCS += ticks.cpp
SRCS += Vector2.cpp

SRCS += Entities/Ball.cpp
SRCS += Entities/Entity.cpp
SRCS += Entities/Line.cpp
SRCS += Entities/Particle.cpp
SRCS += Entities/PhysicsEntity.cpp
SRCS += Entities/Point.cpp
SRCS += Entities/Polygon.cpp
SRCS += Entities/WindParticle.cpp

SRCS += GameStates/CreatingPolygon.cpp
SRCS += GameStates/GameState.cpp
SRCS += GameStates/Paused.cpp
SRCS += GameStates/Running.cpp

SRCS += input/inputManager.cpp

SRCS += graphics/graphics.cpp

OBJS := ${SRCS:.cpp=.o}


TARGET := ../run_physics
DEPENDS := ${SRCS:.cpp=.d}


.PHONY: all
all: ${TARGET}

${TARGET}: ${OBJS}
	${CXX} ${CXXFLAGS} -o ${TARGET} $^ ${LIBS}
	@echo ""

# how to make a depend file from a source file
%.d: %.cpp
	@echo "DEP: $@"
	@${CXX} -M ${CXXFLAGS} $< | sed 's,: , $@: ,' > $@

#@${CXX} -M ${CXXFLAGS} $< | sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' > $@


.PHONY: clean
clean:
	rm -f ${OBJS} ${TARGET}

.PHONY: distclean
distclean: clean
	rm -f ${DEPENDS} tags prof gmon.out

tags: ${SRCS}
	ctags $^

tar: clean
	cd ..; tar -cjf physics.tar.bz2 src/


.PHONY: run
run: all
	${TARGET}

.PHONY: val
val: all
	valgrind ${TARGET}

.PHONY: prof
prof: all
	${TARGET}
	gprof -b ${TARGET} > prof
	kprof -f prof

-include ${DEPENDS}