src = $(wildcard src/*.asm)
data = data/sprsheet.inc
bin = game

QEMU_FLAGS = -fda floppy.img -serial file:serial.log -soundhw sb16 -d guest_errors

.PHONY: all
all: floppy.img

bootldr: src/boot/boot.asm $(bin)
	nasm -o $@ -f bin -DBINSIZE=`ls -l $(bin) | awk '{print $$5}'` $<

$(bin): $(src) $(data)
	nasm -o $@ -f bin -i src/ src/main.asm

boot.img: bootldr $(bin)
	cat $^ >$@

floppy.img: boot.img
	dd of=$@ if=/dev/zero bs=512 count=2880
	dd of=$@ if=$< bs=1 conv=notrunc

data/sprsheet.inc: data/sprsheet.png
	img2tiles -o $@ -n -t 32x32 $<

.PHONY: clean
clean:
	rm -f $(bin) bootldr floppy.img boot.img

.PHONY: disasm
disasm: bootldr.disasm $(bin).disasm

bootldr.disasm: bootldr
	ndisasm -b 16 -o 7c00h $< >$@

$(bin).disasm: $(bin)
	ndisasm -b 16 -o 7e00h $< >$@

.PHONY: run
run: $(bin)
	qemu-system-i386 $(QEMU_FLAGS)

.PHONY: debug
debug: $(bin)
	qemu-system-i386 $(QEMU_FLAGS) -s -S