src/pywiiuse/pygame_wiimouse.py

   1 # -*- coding: utf-8 -*-
   2 '''
   3 wiimote -> mouse interface
   4 $Id$
   5 $URL$
   6 '''
   7
   8 import pygame
   9 from threading import Thread
  10 from Queue import Queue, Empty
  11 import time
  12
  13 # events to use. Is there a way to get ones known to be unused?
  14
  15
  16 wiiuse = None # import within the thread, why do I have to do this?
  17
  18 class wiimote_thread(Thread):
  19     '''Manage the wiiuse interface'''
  20     def __init__(self, nmotes=1, timeout=5):
  21         Thread.__init__(self, name='wiimote')
  22         self.queue = Queue()
  23         self.startup = Queue()
  24         self.nmotes = nmotes
  25         self.selectedWiimoteIndex = 0
  26         self.timeout = timeout
  27         self.setDaemon(1)
  28         self._paused = False
  29         self.start()
  30         self.startup.get(True) # wait for the thread to get started and acquire the motes
  31         self.eventCallBack = _default_event_cb
  32
  33     def setEventCallBack(self, func) :
  34         self.eventCallBack = func
  35
  36     def run(self):
  37         '''This runs in a separate thread'''
  38         global wiiuse
  39         import PyWiiUse as wiiuse # import here to avoid thread problems on windows
  40         self.wiimotes = wiiuse.init(self.nmotes)
  41         found = wiiuse.find(self.wiimotes, self.nmotes, self.timeout)
  42         self.actual_nmotes = wiiuse.connect(self.wiimotes, self.nmotes)
  43
  44
  45         for i in range(self.nmotes):
  46             wiiuse.set_leds(self.wiimotes[i], wiiuse.LED[i])
  47
  48         self.go = self.actual_nmotes != 0
  49
  50         self.startup.put(self.go)
  51
  52         while self.go:
  53             if self._paused : continue
  54             try :
  55                 if wiiuse.poll(self.wiimotes, self.nmotes) :
  56                     for i in range(self.nmotes) :
  57                         m = self.wiimotes[i]
  58                         if m[0].event == wiiuse.EVENT:
  59                             self.eventCallBack(self, i, m)
  60             except :
  61                 pass
  62
  63             while True:
  64                 try:
  65                     func, args = self.queue.get_nowait()
  66                 except Empty:
  67                     break
  68                 func(*args)
  69
  70     def pause(self) :
  71         self._paused  = True
  72
  73     def resume(self) :
  74         self._paused = False
  75
  76     def selectWiimote(self, wiimoteIndex) :
  77         self.selectedWiimoteIndex = wiimoteIndex
  78
  79     def do(self, func, *args):
  80         '''Run the function in the thread handling the wiimote'''
  81         self.queue.put((func, args))
  82
  83     def control_cb(self, wmp, attachment, speaker, ir, led, battery):
  84         '''Could check the battery level and such here'''
  85         pygame.event.post(pygame.event.Event(WIIMOTE_STATUS,
  86                                              attachment=attachment,
  87                                              speaker=speaker,
  88                                              ir=ir,
  89                                              led=[led[i] for i in range(4)],
  90                                              battery=battery,
  91                                              id=wmp[0].unid))
  92
  93     def disconnect_cb(self, wmp):
  94         '''What should we do here?'''
  95         pygame.event.post(pygame.event.Event(WIIMOTE_DISCONNECT,
  96                                              id=wmp[0].unid))
  97
  98     def quit(self):
  99         '''Go away.'''
 100         for i in range(self.nmotes):
 101             wiiuse.set_leds(self.wiimotes[i], 0)
 102             wiiuse.disconnect(self.wiimotes[i])
 103         self.go = False
 104
 105     def get_count(self):
 106         return self.actual_nmotes
 107
 108
 109 def _default_event_cb(self, id, wmp):
 110     '''Called when the library has some data for the user.'''
 111     if id != self.selectedWiimoteIndex : return
 112     wm = wmp[0]
 113     pos = (wm.ir.x, wm.ir.y)
 114     pygame.mouse.set_pos(pos)
 115
 116     eventType = None
 117
 118     if wm.btns and \
 119         wiiuse.is_just_pressed(wm, wiiuse.button['B']) :
 120             event = pygame.event.Event(pygame.MOUSEBUTTONDOWN,
 121                                        pos = pos,
 122                                        button = 1)
 123             pygame.event.post(event)
 124
 125     if wm.btns_released and \
 126         wiiuse.is_released(wm, wiiuse.button['B']):
 127             event = pygame.event.Event(pygame.MOUSEBUTTONUP,
 128                                        pos = pos,
 129                                        button = 1)
 130             pygame.event.post(event)
 131
 132
 133
 134 WT = None
 135
 136 def init(nmotes, timeout, screenResolution=(660, 370), position='ABOVE'):
 137     '''Initialize the module.'''
 138     global WT
 139     if WT:
 140         return
 141     WT = wiimote_thread(nmotes, timeout)
 142
 143     if position == 'ABOVE' :
 144         position = wiiuse.IR_ABOVE
 145     elif position == 'BELOW' :
 146         position = wiiuse.IR_BELOW
 147     else :
 148         position = wiiuse.IR_ABOVE
 149
 150
 151     nmotes = get_count()
 152     for i in range(nmotes) :
 153         wm = Wiimote(i) # access the wiimote object
 154         wm.enable_accels(0) # turn off acceleration reporting
 155         wm.enable_ir(1, vres = screenResolution, position=position)
 156
 157
 158 def get_count():
 159     '''How many Wiimotes were found?'''
 160     return WT.get_count()
 161
 162 def quit():
 163     '''Gracefully shutdown the connection and turn off the wiimote leds'''
 164     WT.quit()
 165     WT.join()
 166
 167 class wiimote(object):
 168     '''Object representing a Wiimote'''
 169     def __init__(self, n):
 170         self.wm = WT.wiimotes[n]
 171
 172     def enable_leds(self, m):
 173         '''Control leds. The lower 4 bits map to the 4 leds'''
 174         WT.do(wiiuse.set_leds, self.wm, sum([wiiuse.LED[i] for i in range(4) if m & (1<<i)]))
 175
 176     def enable_rumble(self, on):
 177         '''Control rumble'''
 178         WT.do(wiiuse.rumble, self.wm, on)
 179
 180     def enable_accels(self, on):
 181         '''Control reporting of accelerometer data.'''
 182         WT.do(wiiuse.motion_sensing, self.wm, on)
 183
 184     def enable_ir(self, on, vres=None, position=None, aspect=None):
 185         '''Control reporting IR data.'''
 186         WT.do(wiiuse.set_ir, self.wm, on)
 187         if vres is not None:
 188             WT.do(wiiuse.set_ir_vres, self.wm, *vres)
 189         if position is not None:
 190             WT.do(wiiuse.set_ir_position, self.wm, position)
 191         if aspect is not None:
 192             WT.do(wiiuse.set_aspect_ratio, self.wm, aspect)
 193
 194     def set_flags(self, smoothing=None, continuous=None, threshold=None):
 195         '''Set flags SMOOTHING, CONTINUOUS, ORIENT_THRESH'''
 196         enable = disable = 0
 197         if smoothing is not None:
 198             if smoothing:
 199                 enable |= wiiuse.SMOOTHING
 200             else:
 201                 disable |= wiiuse.SMOOTHING
 202         if continuous is not None:
 203             if continuous:
 204                 enable |= wiiuse.CONTINUOUS
 205             else:
 206                 disable |= wiiuse.CONTINUOUS
 207         if threshold is not None:
 208             if threshold:
 209                 enable |= wiiuse.ORIENT_THRESH
 210             else:
 211                 disable |= wiiuse.ORIENT_THRESH
 212         WT.do(wiiuse.set_flags, self.wm, enable, disable)
 213
 214     def set_orient_thresh(self, thresh):
 215         '''Set orientation threshold'''
 216         WT.do(wiiuse.set_orient_threshold, self.wm, thresh)
 217
 218     def status(self):
 219         '''Trigger a status callback.'''
 220         WT.do(wiiuse.status, self.wm)
 221
 222     def disconnect(self):
 223         '''Disconnect this Wiimote'''
 224         WT.do(wiiuse.disconnect(self.wm))
 225
 226 def Wiimote(n):
 227     '''Get the object for the nth Wiimote'''
 228     return wiimote(n)
 229