PROJECT_ROOT = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))

OBJS = pinetab2_framework.o game.o
SPRITES = $(patsubst $(PROJECT_ROOT)sprites/%.xcf,%,$(wildcard $(PROJECT_ROOT)sprites/*.xcf))
NAVMESHES = $(patsubst $(PROJECT_ROOT)navmesh/%.tmx,%,$(wildcard $(PROJECT_ROOT)navmesh/*.tmx))

BUILD_MODE := debug
ifeq ($(BUILD_MODE),debug)
	CFLAGS += -g
else ifeq ($(BUILD_MODE),run)
	CFLAGS += -O2
else ifeq ($(BUILD_MODE),linuxtools)
	CFLAGS += -g -pg -fprofile-arcs -ftest-coverage
	LDFLAGS += -pg -fprofile-arcs -ftest-coverage
	EXTRA_CLEAN += pinetab2_framework.gcda pinetab2_framework.gcno $(PROJECT_ROOT)gmon.out
	EXTRA_CMDS = rm -rf pinetab2_framework.gcda
else
    $(error Build mode $(BUILD_MODE) not supported by this Makefile)
endif

CXX := aarch64-linux-gnu-g++
CC := aarch64-linux-gnu-gcc
OBJCOPY := aarch64-linux-gnu-objcopy -O elf64-littleaarch64
CFLAGS += -I/usr/include

OBJS += $(patsubst %,sprite_%.o,$(SPRITES))
OBJS += $(patsubst %,navmesh_%.o,$(NAVMESHES))

all: pinetab2_framework $(patsubst %,%.png,$(SPRITES))

pinetab2_framework:	$(OBJS)
	$(CXX) $(LDFLAGS) -o $@ $^
	$(EXTRA_CMDS)

%.o: $(PROJECT_ROOT)%.cpp
	$(CXX) -c $(CFLAGS) $(CXXFLAGS) $(CPPFLAGS) -o $@ $<

%.o: $(PROJECT_ROOT)%.c
	$(CC) -c $(CFLAGS) $(CPPFLAGS) -o $@ $<

%.o: %.c
	$(CXX) -c $(CFLAGS) $(CXXFLAGS) $(CPPFLAGS) -o $@ $< -iquote "$(PROJECT_ROOT)"

clean:
	rm -fr pinetab2_framework $(OBJS) $(EXTRA_CLEAN)

sprite_%.o: $(PROJECT_ROOT)sprites/%.xcf
	gimp -in -b '(let ((image (car (gimp-xcf-load 0 "$<" "$(notdir $<)")))) ;\
		;(gimp-image-scale image 1280 800) ;\
		(gimp-image-rotate image ROTATE-90) ;\
		(let ((layer (car (gimp-image-merge-visible-layers image CLIP-TO-IMAGE)))) ;\
			(plug-in-colors-channel-mixer RUN-NONINTERACTIVE image layer 0 0 0 1 0 1 0 1 0 0) ; swap red and blue channels \
			(file-raw-save 1 image layer "$(patsubst %.o,%.raw,$@)" "$(patsubst %.o,%.raw,$@)") ;\
		) ;\
	)' -b '(gimp-quit 0)'
	$(OBJCOPY) -I binary --rename-section .data=.rodata,alloc,load,readonly,data,contents $(patsubst %.o,%.raw,$@) $@
	rm $(patsubst %.o,%.raw,$@)
	@# symbols are _binary_sprite_%_raw_start / _end / _size

navmesh_%.c: $(PROJECT_ROOT)navmesh/%.tmx $(PROJECT_ROOT)compile_navmesh.py
	python3 "$(PROJECT_ROOT)compile_navmesh.py" "$<" "$@" "$(patsubst navmesh_%.c,%,$@)"
	@# symbols are navmesh_% and predef_%

navmesh_%.o: $(PROJECT_ROOT)compiled_structures.h $(PROJECT_ROOT)objids.h

%.png: $(PROJECT_ROOT)sprites/%.xcf
	gimp -in -b '(let ((image (car (gimp-xcf-load 0 "$<" "$(notdir $<)")))) ;\
		;(gimp-image-scale image 1280 800) ;\
		(let ((layer (car (gimp-image-merge-visible-layers image CLIP-TO-IMAGE)))) ;\
			(file-png-save 1 image layer "$@" "$@" 0 9 0 0 0 0 0) ;\
		) ;\
	)' -b '(gimp-quit 0)'