gametoy.py 文件源码

def run(path, debug, max_cycles):
    with open(path, "rb") as rom_file:
        debug_title = debug == "TITLE"
        debug_header = debug == "HEADER" or debug == "ALL"
        debug_mem = debug == "MEMORY" or debug == "ALL"
        debug_instructions = debug == "INSTRUCTIONS" or debug == "ALL"
        debug_registers = debug == "REGISTERS" or debug == "ALL"
        rom = [i for i in rom_file.read()]

        header = Header(rom, debug_header)
        mem = Memory(rom, header)
        if debug_title:
            print("Title: " + header.name)
        if debug_instructions:
            print("PC:    Operation")

        interrupts = Interrupts()
        cpu = CPU(mem, interrupts, debug_instructions, debug_registers)
        timer = Timer(interrupts)
        sound = Sound()
        link = Link()
        joypad = Joypad()
        lcdc = LCDC(mem, interrupts)
        mem.setupIO(lcdc, interrupts, timer, sound, link, joypad)
        total_cycles = 0

        try:
            pygame.init()
            while cpu.run_state != "QUIT":
                for event in pygame.event.get():
                    if event.type == pygame.QUIT:
                        cpu.run_state = "QUIT"
                    if event.type == pygame.KEYDOWN or event.type == pygame.KEYUP:
                        joypad.keyEvent(event)

                interrupts.update()
                if cpu.run_state == "RUN":
                    cpu.run()
                else:
                    cpu.cycles += 1

                timer.update(cpu.cycles)
                lcdc.update(cpu.cycles)

                total_cycles += cpu.popCycles()
                if max_cycles >= 0 and total_cycles > max_cycles:
                    cpu.run_state = "QUIT"
        except AssertionError as e:
            if debug_mem:
                mem.display()
            traceback.print_tb(e.__traceback__)
        except KeyboardInterrupt as e:
            if debug_mem:
                mem.display()
        else:
            if debug_mem:
                mem.display()