PNGFILES := $(shell find png -type f -name '*.png')
IMGFILES := $(PNGFILES:%.png=%.2bpp)

SFILES := $(shell find src -type f -name '*.s')
OFILES := $(SFILES:%.s=%.o)

.PHONY: clean

is.gb is.gb.sym: $(IMGFILES) $(OFILES)
	rgblink -o $@ -n $@.sym $(OFILES)
	rgbfix -v $@

$(OFILES): $(IMGFILES)

%.o: %.s
	rgbasm -i inc -o $@ $<

%.2bpp: %.png
	rgbgfx -o $@ $<

clean:
	rm -f is.gb is.gb.sym $(IMGFILES) $(OFILES)