include config.mk

BUILDBASE := build
BUILD := $(BUILDBASE)

MD5 := md5sum -c
PYTHON := python
PYTHON3 := python3.6

RGBASM := rgbasm -D$(GAME_VERSION)=1 -DDEBUG=$(DEBUG)
RGBGFX := rgbgfx
RGBLINK := rgblink
RGBFIX := rgbfix

RGBASMFLAGS := -h -E -i $(BUILD)/
tools/gfx :=
tools/make_shim :=
sort_sym := tools/sort_symfile.sh
#sort_sym := $(PYTHON3) tools/sort_sym.py

ROM := poke$(BUILD_NAME)-spaceworld.gb
ROMS := $(foreach r, gold gold-debug silver silver-debug, poke$(r)-spaceworld.gb)
# Pokemon Gold Debug
BASEROM := baserom.gb
DIRS := home engine data audio
OBJS := $(addprefix $(BUILD)/, gfx.o sram.o wram.o hram.o shim.o)
SHIM := shim.sym
CORRECTEDROM := $(ROM:%.gb=%-correctheader.gb)
CORRECTEDROMS := $(ROMS:%.gb=%-correctheader.gb)

rwildcard = $(foreach d, $(wildcard $1*), $(filter $(subst *, %, $2), $d) $(call rwildcard, $d/, $2))
OBJS += $(patsubst %.asm, $(BUILD)/%.o, $(call rwildcard, $(DIRS), *.asm))

GFX := $(patsubst %.png, $(BUILD)/%.2bpp, \
       $(patsubst %.1bpp.png, $(BUILD)/%.1bpp, \
       $(patsubst gfx/pokemon/%/front.png, $(BUILD)/gfx/pokemon/%/front.pic, \
       $(patsubst gfx/pokemon/%/back.png, $(BUILD)/gfx/pokemon/%/back.pic, \
       $(patsubst gfx/trainer/%.png, $(BUILD)/gfx/trainer/%.pic, \
       $(call rwildcard, gfx, *.png))))))

.SECONDEXPANSION:

.PHONY: all
all: $(ROM) $(CORRECTEDROM) compare

.PHONY: compare
compare: $(ROM)
	$(MD5) roms.md5

.PHONY: tools
tools tools/pkmncompress tools/gfx:
	$(MAKE) -C tools/

.PHONY: coverage
coverage: tools/disasm_coverage.py $(ROM)
	$(PYTHON) $< -m $(ROM:.gb=.map) -b 0x40

# Remove files generated by the build process.
.PHONY: clean
clean:
	rm -rf $(ROMS) $(CORRECTEDROMS) $(BUILDBASE) $(ROMS:.gb=.sym) $(ROMS:.gb=.map) $(CORRECTEDROMS)
	make -C tools clean

# Remove files except for graphics.
.PHONY: mostlyclean
mostlyclean:
	rm -rf $(ROMS) $(OBJS) $(ROMS:.gb=.sym) $(ROMS:.gb=.map) $(CORRECTEDROMS)
	find . \( -iname '*.d' \) -exec rm {} +

$(ROM): $(OBJS) | $(BASEROM)
	$(RGBLINK) -d -n $(@:.gb=.sym) -m $(@:.gb=.map) -O $(BASEROM) -o $@ $^
	$(RGBFIX) -f lh -k 01 -l 0x33 -m 0x03 -p 0 -r 3 -t "POKEMON2$(GAME_VERSION)" $@
	$(sort_sym) $(@:.gb=.sym)

$(BASEROM):
	@echo "Please obtain a copy of Gold_debug.sgb and put it in this directory as $@"
	@exit 1

$(BUILD)/shim.asm: tools/make_shim $(SHIM) tools/make_shim | $$(dir $$@)
	tools/make_shim -w $(filter-out $<, $^) > $@
$(CORRECTEDROM): %-correctheader.gb: %.gb
	cp $< $@
	$(RGBFIX) -f hg -m 0x10 $@

$(BUILD)/gfx.o: | $(GFX)
$(BUILD)/%.o: $(BUILD)/%.asm | $$(dir $$@)
	$(RGBASM) $(RGBASMFLAGS) -M $(@:.o=.d) $(OUTPUT_OPTION) $<
$(BUILD)/%.o: %.asm | $$(dir $$@)
	$(RGBASM) $(RGBASMFLAGS) -M $(@:.o=.d) $(OUTPUT_OPTION) $<

$(BUILD)/gfx/sgb/sgb_border_alt.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/sgb/sgb_border_gold.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/sgb/sgb_border_silver.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/title/title_gold.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/title/title_silver.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/trainer_card/leaders.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/trainer_card/trainer_card.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/minigames/slots.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/minigames/poker.2bpp: tools/gfx += --trim-whitespace
$(BUILD)/gfx/intro/purin_pikachu.2bpp: tools/gfx += --trim-whitespace

.PRECIOUS: $(BUILD)/%.pic
$(BUILD)/%.pic: $(BUILD)/%.2bpp tools/pkmncompress | $$(dir $$@)
	tools/pkmncompress $< $@

.PRECIOUS: $(BUILD)/%.2bpp
$(BUILD)/%.2bpp: %.png tools/gfx | $$(dir $$@)
	$(RGBGFX) $(OUTPUT_OPTION) $<
	tools/gfx $(tools/gfx) $(OUTPUT_OPTION) $@

.PRECIOUS: $(BUILD)/%.1bpp
$(BUILD)/%.1bpp: %.1bpp.png tools/gfx | $$(dir $$@)
	$(RGBGFX) -d1 $(OUTPUT_OPTION) $<
	tools/gfx $(tools/gfx) -d1 $(OUTPUT_OPTION) $@

.PRECIOUS: $(BUILD)/%.tilemap
$(BUILD)/%.tilemap: %.png | $$(dir $$@)
	$(RGBGFX) -t $@ $<

.PRECIOUS: %/
%/:
	mkdir -p $@

-include $(call rwildcard, $(BUILD)/, *.d)

#gold:         ; @$(MAKE) GAME_VERSION=GOLD
#gold_debug:   ; @$(MAKE) GAME_VERSION=GOLD DEBUG=1
#silver:       ; @$(MAKE) GAME_VERSION=SILVER
#silver_debug: ; @$(MAKE) GAME_VERSION=SILVER DEBUG=1
#compare: ;
#	@$(MAKE) GAME_VERSION=GOLD COMPARE=1
#	@$(MAKE) GAME_VERSION=GOLD DEBUG=1 COMPARE=1
#	@$(MAKE) GAME_VERSION=SILVER COMPARE=1
#	@$(MAKE) GAME_VERSION=SILVER DEBUG=1 COMPARE=1
#	@$(MD5) roms.md5