class MachineController(object):
"""Base class for the Machine Controller object.
The machine controller is the main entity of the entire framework. It's the
main part that's in charge and makes things happen.
Args:
options: Dictionary of options the machine controller uses to configure
itself.
Attributes:
options: A dictionary of options built from the command line options
used to launch mpf.py.
config: A dictionary of machine's configuration settings, merged from
various sources.
done: Boolean. Set to True and MPF exits.
machine_path: The root path of this machine_files folder
display:
plugins:
scriptlets:
platform:
events:
"""
def __init__(self, options):
self.options = options
self.log = logging.getLogger("Machine")
self.log.info("Mission Pinball Framework v%s", version.__version__)
self.log.debug("Command line arguments: {}".format(self.options))
self.verify_system_info()
self.loop_start_time = 0
self.tick_num = 0
self.done = False
self.machine_path = None # Path to this machine's folder root
self.monitors = dict()
self.plugins = list()
self.scriptlets = list()
self.modes = list()
self.asset_managers = dict()
self.game = None
self.active_debugger = dict()
self.machine_vars = CaseInsensitiveDict()
self.machine_var_monitor = False
self.machine_var_data_manager = None
self.flag_bcp_reset_complete = False
self.asset_loader_complete = False
self.delay = DelayManager()
self.crash_queue = Queue.Queue()
Task.create(self._check_crash_queue)
FileManager.init()
self.config = dict()
self._load_mpf_config()
self._set_machine_path()
self._load_machine_config()
self.configure_debugger()
self.hardware_platforms = dict()
self.default_platform = None
if not self.options['force_platform']:
for section, platform in self.config['hardware'].iteritems():
if platform.lower() != 'default' and section != 'driverboards':
self.add_platform(platform)
self.set_default_platform(self.config['hardware']['platform'])
else:
self.add_platform(self.options['force_platform'])
self.set_default_platform(self.options['force_platform'])
# Do this here so there's a credit_string var even if they're not using
# the credits mode
try:
credit_string = self.config['credits']['free_play_string']
except KeyError:
credit_string = 'FREE PLAY'
self.create_machine_var('credits_string', credit_string, silent=True)
self._load_system_modules()
# This is called so hw platforms have a change to register for events,
# and/or anything else they need to do with system modules since
# they're not set up yet when the hw platforms are constructed.
for platform in self.hardware_platforms.values():
platform.initialize()
self.validate_machine_config_section('machine')
self.validate_machine_config_section('timing')
self.validate_machine_config_section('hardware')
self.validate_machine_config_section('game')
self._register_system_events()
self._load_machine_vars()
self.events.post("init_phase_1")
self.events._process_event_queue()
self.events.post("init_phase_2")
self.events._process_event_queue()
self._load_plugins()
self.events.post("init_phase_3")
self.events._process_event_queue()
self._load_scriptlets()
self.events.post("init_phase_4")
self.events._process_event_queue()
self.events.post("init_phase_5")
self.events._process_event_queue()
self.reset()
def validate_machine_config_section(self, section):
if section not in self.config['config_validator']:
return
if section not in self.config:
self.config[section] = dict()
self.config[section] = self.config_processor.process_config2(
section, self.config[section], section)
def _register_system_events(self):
self.events.add_handler('shutdown', self.power_off)
self.events.add_handler(
self.config['mpf']['switch_tag_event'].replace('%', 'shutdown'),
self.power_off)
self.events.add_handler('quit', self.quit)
self.events.add_handler(
self.config['mpf']['switch_tag_event'].replace('%', 'quit'),
self.quit)
self.events.add_handler('timer_tick', self._loading_tick)
def _load_machine_vars(self):
self.machine_var_data_manager = DataManager(self, 'machine_vars')
current_time = time.time()
for name, settings in (
self.machine_var_data_manager.get_data().iteritems()):
if ('expire' in settings and settings['expire']
and settings['expire'] < current_time):
settings['value'] = 0
self.create_machine_var(name=name, value=settings['value'])
def _check_crash_queue(self):
try:
crash = self.crash_queue.get(block=False)
except Queue.Empty:
yield 1000
else:
self.log.critical("MPF Shutting down due to child thread crash")
self.log.critical("Crash details: %s", crash)
self.done = True
def _load_mpf_config(self):
self.config = Config.load_config_file(self.options['mpfconfigfile'])
def _set_machine_path(self):
# If the machine folder value passed starts with a forward or
# backward slash, then we assume it's from the mpf root. Otherwise we
# assume it's in the mpf/machine_files folder
if (self.options['machine_path'].startswith('/')
or self.options['machine_path'].startswith('\\')):
machine_path = self.options['machine_path']
else:
machine_path = os.path.join(
self.config['mpf']['paths']['machine_files'],
self.options['machine_path'])
self.machine_path = os.path.abspath(machine_path)
self.log.debug("Machine path: {}".format(self.machine_path))
# Add the machine folder to sys.path so we can import modules from it
sys.path.append(self.machine_path)
def _load_machine_config(self):
for num, config_file in enumerate(self.options['configfile']):
if not (config_file.startswith('/')
or config_file.startswith('\\')):
config_file = os.path.join(
self.machine_path, self.config['mpf']['paths']['config'],
config_file)
self.log.info("Machine config file #%s: %s", num + 1, config_file)
self.config = Util.dict_merge(self.config,
Config.load_config_file(config_file))
def verify_system_info(self):
"""Dumps information about the Python installation to the log.
Information includes Python version, Python executable, platform, and
system architecture.
"""
python_version = sys.version_info
if python_version[0] != 2 or python_version[1] != 7:
self.log.error(
"Incorrect Python version. MPF requires Python 2.7."
"x. You have Python %s.%s.%s.", python_version[0],
python_version[1], python_version[2])
sys.exit()
self.log.debug("Python version: %s.%s.%s", python_version[0],
python_version[1], python_version[2])
self.log.debug("Platform: %s", sys.platform)
self.log.debug("Python executable location: %s", sys.executable)
self.log.debug("32-bit Python? %s", sys.maxsize < 2**32)
def _load_system_modules(self):
self.log.info("Loading system modules...")
for module in self.config['mpf']['system_modules']:
self.log.debug("Loading '%s' system module", module[1])
m = self.string_to_class(module[1])(self)
setattr(self, module[0], m)
def _load_plugins(self):
self.log.info("Loading plugins...")
# TODO: This should be cleaned up. Create a Plugins superclass and
# classmethods to determine if the plugins should be used.
for plugin in Util.string_to_list(self.config['mpf']['plugins']):
self.log.debug("Loading '%s' plugin", plugin)
pluginObj = self.string_to_class(plugin)(self)
self.plugins.append(pluginObj)
def _load_scriptlets(self):
if 'scriptlets' in self.config:
self.config['scriptlets'] = self.config['scriptlets'].split(' ')
self.log.info("Loading scriptlets...")
for scriptlet in self.config['scriptlets']:
self.log.debug("Loading '%s' scriptlet", scriptlet)
i = __import__(self.config['mpf']['paths']['scriptlets'] +
'.' + scriptlet.split('.')[0],
fromlist=[''])
self.scriptlets.append(
getattr(i,
scriptlet.split('.')[1])(
machine=self, name=scriptlet.split('.')[1]))
def _prepare_to_reset(self):
pass
# wipe all event handlers
def reset(self):
"""Resets the machine.
This method is safe to call. It essentially sets up everything from
scratch without reloading the config files and assets from disk. This
method is called after a game ends and before attract mode begins.
Note: This method is not yet implemented.
"""
self.events.post('Resetting...')
self.events._process_event_queue()
self.events.post('machine_reset_phase_1')
self.events._process_event_queue()
self.events.post('machine_reset_phase_2')
self.events._process_event_queue()
self.events.post('machine_reset_phase_3')
self.events._process_event_queue()
self.log.debug('Reset Complete')
def add_platform(self, name):
"""Makes an additional hardware platform interface available to MPF.
Args:
name: String name of the platform to add. Must match the name of a
platform file in the mpf/platforms folder (without the .py
extension).
"""
if name not in self.hardware_platforms:
hardware_platform = __import__('mpf.platform.%s' % name,
fromlist=["HardwarePlatform"])
self.hardware_platforms[name] = (
hardware_platform.HardwarePlatform(self))
def set_default_platform(self, name):
"""Sets the default platform which is used if a device class-specific or
device-specific platform is not specified. The default platform also
controls whether a platform timer or MPF's timer is used.
Args:
name: String name of the platform to set to default.
"""
try:
self.default_platform = self.hardware_platforms[name]
self.log.debug("Setting default platform to '%s'", name)
except KeyError:
self.log.error(
"Cannot set default platform to '%s', as that's not"
" a currently active platform", name)
def string_to_class(self, class_string):
"""Converts a string like mpf.system.events.EventManager into a python
class.
Args:
class_string(str): The input string
Returns:
A reference to the python class object
This function came from here:
http://stackoverflow.com/questions/452969/
does-python-have-an-equivalent-to-java-class-forname
"""
parts = class_string.split('.')
module = ".".join(parts[:-1])
m = __import__(module)
for comp in parts[1:]:
m = getattr(m, comp)
return m
def register_monitor(self, monitor_class, monitor):
"""Registers a monitor.
Args:
monitor_class: String name of the monitor class for this monitor
that's being registered.
monitor: String name of the monitor.
MPF uses monitors to allow components to monitor certain internal
elements of MPF.
For example, a player variable monitor could be setup to be notified of
any changes to a player variable, or a switch monitor could be used to
allow a plugin to be notified of any changes to any switches.
The MachineController's list of registered monitors doesn't actually
do anything. Rather it's a dictionary of sets which the monitors
themselves can reference when they need to do something. We just needed
a central registry of monitors.
"""
if monitor_class not in self.monitors:
self.monitors[monitor_class] = set()
self.monitors[monitor_class].add(monitor)
def run(self):
"""Starts the main machine run loop."""
self.log.debug("Starting the main run loop.")
self.default_platform.timer_initialize()
self.loop_start_time = time.time()
if self.default_platform.features['hw_timer']:
self.default_platform.run_loop()
else:
self._mpf_timer_run_loop()
def _mpf_timer_run_loop(self):
#Main machine run loop with when the default platform interface
#specifies the MPF should control the main timer
start_time = time.time()
loops = 0
secs_per_tick = timing.Timing.secs_per_tick
sleep_sec = self.config['timing']['hw_thread_sleep_ms'] / 1000.0
self.default_platform.next_tick_time = time.time()
try:
while self.done is False:
time.sleep(sleep_sec)
self.default_platform.tick()
loops += 1
if self.default_platform.next_tick_time <= time.time(
): # todo change this
self.timer_tick()
self.default_platform.next_tick_time += secs_per_tick
except KeyboardInterrupt:
pass
self.log_loop_rate()
self._platform_stop()
try:
self.log.info("Hardware loop rate: %s Hz",
round(loops / (time.time() - start_time), 2))
except ZeroDivisionError:
self.log.info("Hardware loop rate: 0 Hz")
def timer_tick(self):
"""Called to "tick" MPF at a rate specified by the machine Hz setting.
This method is called by the MPF run loop or the platform run loop,
depending on the platform. (Some platforms drive the loop, and others
let MPF drive.)
"""
self.tick_num += 1 # used to calculate the loop rate when MPF exits
self.timing.timer_tick() # notifies the timing module
self.events.post('timer_tick') # sends the timer_tick system event
tasks.Task.timer_tick() # notifies tasks
tasks.DelayManager.timer_tick(self)
self.events._process_event_queue()
def _platform_stop(self):
for platform in self.hardware_platforms.values():
platform.stop()
def power_off(self):
"""Attempts to perform a power down of the pinball machine and ends MPF.
This method is not yet implemented.
"""
pass
def quit(self):
"""Performs a graceful exit of MPF."""
self.log.info("Shutting down...")
self.events.post('shutdown')
self.events._process_event_queue()
self.done = True
def log_loop_rate(self):
self.log.info("Target MPF loop rate: %s Hz", timing.Timing.HZ)
try:
self.log.info(
"Actual MPF loop rate: %s Hz",
round(self.tick_num / (time.time() - self.loop_start_time), 2))
except ZeroDivisionError:
self.log.info("Actual MPF loop rate: 0 Hz")
def _loading_tick(self):
if not self.asset_loader_complete:
if AssetManager.loader_queue.qsize():
self.log.debug(
"Holding Attract start while MPF assets load. "
"Remaining: %s", AssetManager.loader_queue.qsize())
self.bcp.bcp_trigger(
'assets_to_load',
total=AssetManager.total_assets,
remaining=AssetManager.loader_queue.qsize())
else:
self.bcp.bcp_trigger('assets_to_load',
total=AssetManager.total_assets,
remaining=0)
self.asset_loader_complete = True
elif self.bcp.active_connections and not self.flag_bcp_reset_complete:
if self.tick_num % Timing.HZ == 0:
self.log.info("Waiting for BCP reset_complete...")
else:
self.log.debug("Asset loading complete")
self._reset_complete()
def bcp_reset_complete(self):
self.flag_bcp_reset_complete = True
def _reset_complete(self):
self.log.debug('Reset Complete')
self.events.post('reset_complete')
self.events.remove_handler(self._loading_tick)
def configure_debugger(self):
pass
def get_debug_status(self, debug_path):
if (self.options['loglevel'] > 10
or self.options['consoleloglevel'] > 10):
return True
class_, module = debug_path.split('|')
try:
if module in self.active_debugger[class_]:
return True
else:
return False
except KeyError:
return False
def set_machine_var(self, name, value, force_events=False):
"""Sets the value of a machine variable.
Args:
name: String name of the variable you're setting the value for.
value: The value you're setting. This can be any Type.
force_events: Boolean which will force the event posting, the
machine monitor callback, and writing the variable to disk (if
it's set to persist). By default these things only happen if
the new value is different from the old value.
"""
if name not in self.machine_vars:
self.log.warning(
"Received request to set machine_var '%s', but "
"that is not a valid machine_var.", name)
return
prev_value = self.machine_vars[name]['value']
self.machine_vars[name]['value'] = value
try:
change = value - prev_value
except TypeError:
if prev_value != value:
change = True
else:
change = False
if change or force_events:
if self.machine_vars[name]['persist']:
disk_var = CaseInsensitiveDict()
disk_var['value'] = value
if self.machine_vars[name]['expire_secs']:
disk_var['expire'] = (
time.time() + self.machine_vars[name]['expire_secs'])
self.machine_var_data_manager.save_key(name, disk_var)
self.log.debug(
"Setting machine_var '%s' to: %s, (prior: %s, "
"change: %s)", name, value, prev_value, change)
self.events.post('machine_var_' + name,
value=value,
prev_value=prev_value,
change=change)
if self.machine_var_monitor:
for callback in self.monitors['machine_vars']:
callback(name=name,
value=value,
prev_value=prev_value,
change=change)
def get_machine_var(self, name):
"""Returns the value of a machine variable.
Args:
name: String name of the variable you want to get that value for.
Returns:
The value of the variable if it exists, or None if the variable
does not exist.
"""
try:
return self.machine_vars[name]['value']
except KeyError:
return None
def is_machine_var(self, name):
if name in self.machine_vars:
return True
else:
return False
def create_machine_var(self,
name,
value=0,
persist=False,
expire_secs=None,
silent=False):
"""Creates a new machine variable:
Args:
name: String name of the variable.
value: The value of the variable. This can be any Type.
persist: Boolean as to whether this variable should be saved to
disk so it's available the next time MPF boots.
expire_secs: Optional number of seconds you'd like this variable
to persist on disk for. When MPF boots, if the expiration time
of the variable is in the past, it will be loaded with a value
of 0. For example, this lets you write the number of credits on
the machine to disk to persist even during power off, but you
could set it so that those only stay persisted for an hour.
"""
var = CaseInsensitiveDict()
var['value'] = value
var['persist'] = persist
var['expire_secs'] = expire_secs
self.machine_vars[name] = var
if not silent:
self.set_machine_var(name, value, force_events=True)
def remove_machine_var(self, name):
"""Removes a machine variable by name. If this variable persists to
disk, it will remove it from there too.
Args:
name: String name of the variable you want to remove.
"""
try:
del self.machine_vars[name]
self.machine_var_data_manager.remove_key(name)
except KeyError:
pass
def remove_machine_var_search(self, startswith='', endswith=''):
"""Removes a machine variable by matching parts of its name.
Args:
startswith: Optional start of the variable name to match.
endswith: Optional end of the variable name to match.
For example, if you pass startswit='player' and endswith='score', this
method will match and remove player1_score, player2_score, etc.
"""
for var in self.machine_vars.keys():
if var.startswith(startswith) and var.endswith(endswith):
del self.machine_vars[var]
self.machine_var_data_manager.remove_key(var)
class MachineController(object):
"""Base class for the Machine Controller object.
The machine controller is the main entity of the entire framework. It's the
main part that's in charge and makes things happen.
Args:
options: Dictionary of options the machine controller uses to configure
itself.
Attributes:
options: A dictionary of options built from the command line options
used to launch mpf.py.
config: A dictionary of machine's configuration settings, merged from
various sources.
done: Boolean. Set to True and MPF exits.
machine_path: The root path of this machine_files folder
display:
plugins:
scriptlets:
platform:
events:
"""
def __init__(self, options):
self.options = options
self.log = logging.getLogger("Machine")
self.log.info("Mission Pinball Framework v%s", version.__version__)
self.log.debug("Command line arguments: {}".format(self.options))
self.verify_system_info()
self.loop_start_time = 0
self.tick_num = 0
self.done = False
self.machine_path = None # Path to this machine's folder root
self.monitors = dict()
self.plugins = list()
self.scriptlets = list()
self.modes = list()
self.asset_managers = dict()
self.game = None
self.active_debugger = dict()
self.machine_vars = CaseInsensitiveDict()
self.machine_var_monitor = False
self.machine_var_data_manager = None
self.flag_bcp_reset_complete = False
self.asset_loader_complete = False
self.delay = DelayManager()
self.crash_queue = Queue.Queue()
Task.create(self._check_crash_queue)
FileManager.init()
self.config = dict()
self._load_mpf_config()
self._set_machine_path()
self._load_machine_config()
self.configure_debugger()
self.hardware_platforms = dict()
self.default_platform = None
if not self.options['force_platform']:
for section, platform in self.config['hardware'].iteritems():
if platform.lower() != 'default' and section != 'driverboards':
self.add_platform(platform)
self.set_default_platform(self.config['hardware']['platform'])
else:
self.add_platform(self.options['force_platform'])
self.set_default_platform(self.options['force_platform'])
# Do this here so there's a credit_string var even if they're not using
# the credits mode
try:
credit_string = self.config['credits']['free_play_string']
except KeyError:
credit_string = 'FREE PLAY'
self.create_machine_var('credits_string', credit_string, silent=True)
self._load_system_modules()
# This is called so hw platforms have a change to register for events,
# and/or anything else they need to do with system modules since
# they're not set up yet when the hw platforms are constructed.
for platform in self.hardware_platforms.values():
platform.initialize()
self.validate_machine_config_section('machine')
self.validate_machine_config_section('timing')
self.validate_machine_config_section('hardware')
self.validate_machine_config_section('game')
self._register_system_events()
self._load_machine_vars()
self.events.post("init_phase_1")
self.events._process_event_queue()
self.events.post("init_phase_2")
self.events._process_event_queue()
self._load_plugins()
self.events.post("init_phase_3")
self.events._process_event_queue()
self._load_scriptlets()
self.events.post("init_phase_4")
self.events._process_event_queue()
self.events.post("init_phase_5")
self.events._process_event_queue()
self.reset()
def validate_machine_config_section(self, section):
if section not in self.config['config_validator']:
return
if section not in self.config:
self.config[section] = dict()
self.config[section] = self.config_processor.process_config2(
section, self.config[section], section)
def _register_system_events(self):
self.events.add_handler('shutdown', self.power_off)
self.events.add_handler(self.config['mpf']['switch_tag_event'].
replace('%', 'shutdown'), self.power_off)
self.events.add_handler('quit', self.quit)
self.events.add_handler(self.config['mpf']['switch_tag_event'].
replace('%', 'quit'), self.quit)
self.events.add_handler('timer_tick', self._loading_tick)
def _load_machine_vars(self):
self.machine_var_data_manager = DataManager(self, 'machine_vars')
current_time = time.time()
for name, settings in (
self.machine_var_data_manager.get_data().iteritems()):
if ('expire' in settings and settings['expire'] and
settings['expire'] < current_time):
settings['value'] = 0
self.create_machine_var(name=name, value=settings['value'])
def _check_crash_queue(self):
try:
crash = self.crash_queue.get(block=False)
except Queue.Empty:
yield 1000
else:
self.log.critical("MPF Shutting down due to child thread crash")
self.log.critical("Crash details: %s", crash)
self.done = True
def _load_mpf_config(self):
self.config = Config.load_config_file(self.options['mpfconfigfile'])
def _set_machine_path(self):
# If the machine folder value passed starts with a forward or
# backward slash, then we assume it's from the mpf root. Otherwise we
# assume it's in the mpf/machine_files folder
if (self.options['machine_path'].startswith('/') or
self.options['machine_path'].startswith('\\')):
machine_path = self.options['machine_path']
else:
machine_path = os.path.join(self.config['mpf']['paths']
['machine_files'],
self.options['machine_path'])
self.machine_path = os.path.abspath(machine_path)
self.log.debug("Machine path: {}".format(self.machine_path))
# Add the machine folder to sys.path so we can import modules from it
sys.path.append(self.machine_path)
def _load_machine_config(self):
for num, config_file in enumerate(self.options['configfile']):
if not (config_file.startswith('/') or
config_file.startswith('\\')):
config_file = os.path.join(self.machine_path,
self.config['mpf']['paths']['config'], config_file)
self.log.info("Machine config file #%s: %s", num+1, config_file)
self.config = Util.dict_merge(self.config,
Config.load_config_file(config_file))
def verify_system_info(self):
"""Dumps information about the Python installation to the log.
Information includes Python version, Python executable, platform, and
system architecture.
"""
python_version = sys.version_info
if python_version[0] != 2 or python_version[1] != 7:
self.log.error("Incorrect Python version. MPF requires Python 2.7."
"x. You have Python %s.%s.%s.", python_version[0],
python_version[1], python_version[2])
sys.exit()
self.log.debug("Python version: %s.%s.%s", python_version[0],
python_version[1], python_version[2])
self.log.debug("Platform: %s", sys.platform)
self.log.debug("Python executable location: %s", sys.executable)
self.log.debug("32-bit Python? %s", sys.maxsize < 2**32)
def _load_system_modules(self):
self.log.info("Loading system modules...")
for module in self.config['mpf']['system_modules']:
self.log.debug("Loading '%s' system module", module[1])
m = self.string_to_class(module[1])(self)
setattr(self, module[0], m)
def _load_plugins(self):
self.log.info("Loading plugins...")
# TODO: This should be cleaned up. Create a Plugins superclass and
# classmethods to determine if the plugins should be used.
for plugin in Util.string_to_list(
self.config['mpf']['plugins']):
self.log.debug("Loading '%s' plugin", plugin)
pluginObj = self.string_to_class(plugin)(self)
self.plugins.append(pluginObj)
def _load_scriptlets(self):
if 'scriptlets' in self.config:
self.config['scriptlets'] = self.config['scriptlets'].split(' ')
self.log.info("Loading scriptlets...")
for scriptlet in self.config['scriptlets']:
self.log.debug("Loading '%s' scriptlet", scriptlet)
i = __import__(self.config['mpf']['paths']['scriptlets'] + '.'
+ scriptlet.split('.')[0], fromlist=[''])
self.scriptlets.append(getattr(i, scriptlet.split('.')[1])
(machine=self,
name=scriptlet.split('.')[1]))
def _prepare_to_reset(self):
pass
# wipe all event handlers
def reset(self):
"""Resets the machine.
This method is safe to call. It essentially sets up everything from
scratch without reloading the config files and assets from disk. This
method is called after a game ends and before attract mode begins.
Note: This method is not yet implemented.
"""
self.events.post('Resetting...')
self.events._process_event_queue()
self.events.post('machine_reset_phase_1')
self.events._process_event_queue()
self.events.post('machine_reset_phase_2')
self.events._process_event_queue()
self.events.post('machine_reset_phase_3')
self.events._process_event_queue()
self.log.debug('Reset Complete')
def add_platform(self, name):
"""Makes an additional hardware platform interface available to MPF.
Args:
name: String name of the platform to add. Must match the name of a
platform file in the mpf/platforms folder (without the .py
extension).
"""
if name not in self.hardware_platforms:
hardware_platform = __import__('mpf.platform.%s' % name,
fromlist=["HardwarePlatform"])
self.hardware_platforms[name] = (
hardware_platform.HardwarePlatform(self))
def set_default_platform(self, name):
"""Sets the default platform which is used if a device class-specific or
device-specific platform is not specified. The default platform also
controls whether a platform timer or MPF's timer is used.
Args:
name: String name of the platform to set to default.
"""
try:
self.default_platform = self.hardware_platforms[name]
self.log.debug("Setting default platform to '%s'", name)
except KeyError:
self.log.error("Cannot set default platform to '%s', as that's not"
" a currently active platform", name)
def string_to_class(self, class_string):
"""Converts a string like mpf.system.events.EventManager into a python
class.
Args:
class_string(str): The input string
Returns:
A reference to the python class object
This function came from here:
http://stackoverflow.com/questions/452969/
does-python-have-an-equivalent-to-java-class-forname
"""
parts = class_string.split('.')
module = ".".join(parts[:-1])
m = __import__(module)
for comp in parts[1:]:
m = getattr(m, comp)
return m
def register_monitor(self, monitor_class, monitor):
"""Registers a monitor.
Args:
monitor_class: String name of the monitor class for this monitor
that's being registered.
monitor: String name of the monitor.
MPF uses monitors to allow components to monitor certain internal
elements of MPF.
For example, a player variable monitor could be setup to be notified of
any changes to a player variable, or a switch monitor could be used to
allow a plugin to be notified of any changes to any switches.
The MachineController's list of registered monitors doesn't actually
do anything. Rather it's a dictionary of sets which the monitors
themselves can reference when they need to do something. We just needed
a central registry of monitors.
"""
if monitor_class not in self.monitors:
self.monitors[monitor_class] = set()
self.monitors[monitor_class].add(monitor)
def run(self):
"""Starts the main machine run loop."""
self.log.debug("Starting the main run loop.")
self.default_platform.timer_initialize()
self.loop_start_time = time.time()
if self.default_platform.features['hw_timer']:
self.default_platform.run_loop()
else:
self._mpf_timer_run_loop()
def _mpf_timer_run_loop(self):
#Main machine run loop with when the default platform interface
#specifies the MPF should control the main timer
start_time = time.time()
loops = 0
secs_per_tick = timing.Timing.secs_per_tick
sleep_sec = self.config['timing']['hw_thread_sleep_ms'] / 1000.0
self.default_platform.next_tick_time = time.time()
try:
while self.done is False:
time.sleep(sleep_sec)
self.default_platform.tick()
loops += 1
if self.default_platform.next_tick_time <= time.time(): # todo change this
self.timer_tick()
self.default_platform.next_tick_time += secs_per_tick
except KeyboardInterrupt:
pass
self.log_loop_rate()
self._platform_stop()
try:
self.log.info("Hardware loop rate: %s Hz",
round(loops / (time.time() - start_time), 2))
except ZeroDivisionError:
self.log.info("Hardware loop rate: 0 Hz")
def timer_tick(self):
"""Called to "tick" MPF at a rate specified by the machine Hz setting.
This method is called by the MPF run loop or the platform run loop,
depending on the platform. (Some platforms drive the loop, and others
let MPF drive.)
"""
self.tick_num += 1 # used to calculate the loop rate when MPF exits
self.timing.timer_tick() # notifies the timing module
self.events.post('timer_tick') # sends the timer_tick system event
tasks.Task.timer_tick() # notifies tasks
tasks.DelayManager.timer_tick(self)
self.events._process_event_queue()
def _platform_stop(self):
for platform in self.hardware_platforms.values():
platform.stop()
def power_off(self):
"""Attempts to perform a power down of the pinball machine and ends MPF.
This method is not yet implemented.
"""
pass
def quit(self):
"""Performs a graceful exit of MPF."""
self.log.info("Shutting down...")
self.events.post('shutdown')
self.events._process_event_queue()
self.done = True
def log_loop_rate(self):
self.log.info("Target MPF loop rate: %s Hz", timing.Timing.HZ)
try:
self.log.info("Actual MPF loop rate: %s Hz",
round(self.tick_num /
(time.time() - self.loop_start_time), 2))
except ZeroDivisionError:
self.log.info("Actual MPF loop rate: 0 Hz")
def _loading_tick(self):
if not self.asset_loader_complete:
if AssetManager.loader_queue.qsize():
self.log.debug("Holding Attract start while MPF assets load. "
"Remaining: %s",
AssetManager.loader_queue.qsize())
self.bcp.bcp_trigger('assets_to_load',
total=AssetManager.total_assets,
remaining=AssetManager.loader_queue.qsize())
else:
self.bcp.bcp_trigger('assets_to_load',
total=AssetManager.total_assets,
remaining=0)
self.asset_loader_complete = True
elif self.bcp.active_connections and not self.flag_bcp_reset_complete:
if self.tick_num % Timing.HZ == 0:
self.log.info("Waiting for BCP reset_complete...")
else:
self.log.debug("Asset loading complete")
self._reset_complete()
def bcp_reset_complete(self):
self.flag_bcp_reset_complete = True
def _reset_complete(self):
self.log.debug('Reset Complete')
self.events.post('reset_complete')
self.events.remove_handler(self._loading_tick)
def configure_debugger(self):
pass
def get_debug_status(self, debug_path):
if (self.options['loglevel'] > 10 or
self.options['consoleloglevel'] > 10):
return True
class_, module = debug_path.split('|')
try:
if module in self.active_debugger[class_]:
return True
else:
return False
except KeyError:
return False
def set_machine_var(self, name, value, force_events=False):
"""Sets the value of a machine variable.
Args:
name: String name of the variable you're setting the value for.
value: The value you're setting. This can be any Type.
force_events: Boolean which will force the event posting, the
machine monitor callback, and writing the variable to disk (if
it's set to persist). By default these things only happen if
the new value is different from the old value.
"""
if name not in self.machine_vars:
self.log.warning("Received request to set machine_var '%s', but "
"that is not a valid machine_var.", name)
return
prev_value = self.machine_vars[name]['value']
self.machine_vars[name]['value'] = value
try:
change = value-prev_value
except TypeError:
if prev_value != value:
change = True
else:
change = False
if change or force_events:
if self.machine_vars[name]['persist']:
disk_var = CaseInsensitiveDict()
disk_var['value'] = value
if self.machine_vars[name]['expire_secs']:
disk_var['expire'] = (time.time() +
self.machine_vars[name]['expire_secs'])
self.machine_var_data_manager.save_key(name, disk_var)
self.log.debug("Setting machine_var '%s' to: %s, (prior: %s, "
"change: %s)", name, value, prev_value,
change)
self.events.post('machine_var_' + name,
value=value,
prev_value=prev_value,
change=change)
if self.machine_var_monitor:
for callback in self.monitors['machine_vars']:
callback(name=name, value=value,
prev_value=prev_value, change=change)
def get_machine_var(self, name):
"""Returns the value of a machine variable.
Args:
name: String name of the variable you want to get that value for.
Returns:
The value of the variable if it exists, or None if the variable
does not exist.
"""
try:
return self.machine_vars[name]['value']
except KeyError:
return None
def is_machine_var(self, name):
if name in self.machine_vars:
return True
else:
return False
def create_machine_var(self, name, value=0, persist=False,
expire_secs=None, silent=False):
"""Creates a new machine variable:
Args:
name: String name of the variable.
value: The value of the variable. This can be any Type.
persist: Boolean as to whether this variable should be saved to
disk so it's available the next time MPF boots.
expire_secs: Optional number of seconds you'd like this variable
to persist on disk for. When MPF boots, if the expiration time
of the variable is in the past, it will be loaded with a value
of 0. For example, this lets you write the number of credits on
the machine to disk to persist even during power off, but you
could set it so that those only stay persisted for an hour.
"""
var = CaseInsensitiveDict()
var['value'] = value
var['persist'] = persist
var['expire_secs'] = expire_secs
self.machine_vars[name] = var
if not silent:
self.set_machine_var(name, value, force_events=True)
def remove_machine_var(self, name):
"""Removes a machine variable by name. If this variable persists to
disk, it will remove it from there too.
Args:
name: String name of the variable you want to remove.
"""
try:
del self.machine_vars[name]
self.machine_var_data_manager.remove_key(name)
except KeyError:
pass
def remove_machine_var_search(self, startswith='', endswith=''):
"""Removes a machine variable by matching parts of its name.
Args:
startswith: Optional start of the variable name to match.
endswith: Optional end of the variable name to match.
For example, if you pass startswit='player' and endswith='score', this
method will match and remove player1_score, player2_score, etc.
"""
for var in self.machine_vars.keys():
if var.startswith(startswith) and var.endswith(endswith):
del self.machine_vars[var]
self.machine_var_data_manager.remove_key(var)
