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