[#20] Introduce tape player as a device.

zx/_device.py

@@ -74,4 +74,5 @@ class ToggleTapePause(DeviceEvent):
 
 
 class Device(object):
-    pass
+    def destroy(self):
+        pass

zx/_emulator.py

@@ -63,18 +63,19 @@ def __init__(self, speed_factor=1.0, profile=None, devices=None):
 
         self.__events_to_signal = RunEvents.NO_EVENTS
 
+        # TODO: Communicate with tape players via events; remove
+        # this field.
+        self._tape_player = TapePlayer()
+
         # Don't even create the window on full throttle.
         if devices is None and self.__speed_factor is not None:
-            devices = Dispatcher([self, ScreenWindow()])
+            devices = Dispatcher([self, ScreenWindow(), self._tape_player])
 
         self.devices = devices
 
         self.__keyboard_state = KeyboardState()
         self.set_on_input_callback(self.__on_input)
 
-        # TODO: Double-underscore or make public.
-        self._tape_player = TapePlayer()
-
         self.__playback_player = None
         self.__playback_samples = None
 

zx/_gui.py

@@ -448,3 +448,4 @@ def __toggle_tape_pause(self, devices):
 
     def destroy(self):
         self._window.destroy()
+        super().destroy()

zx/_tape.py

@@ -9,6 +9,7 @@
 #   Published under the MIT license.
 
 
+from ._device import Device
 from ._time import Time
 
 
@@ -82,7 +83,7 @@ def tag_last_pulse(pulses):
             yield level, pulse, ids
 
 
-class TapePlayer(object):
+class TapePlayer(Device):
     def __init__(self):
         self._is_paused = True
         self._pulses = None
@@ -166,3 +167,6 @@ def skip_rest_of_frame(self):
 
         assert self._tick >= self._ticks_per_frame
         self._tick -= self._ticks_per_frame
+
+    def on_event(self, event, devices, result):
+        return result