Source Code for Module pyzzle.Switch

 1  """A collection of slides and hotspots that represent  
 2  an object within on/off modes  
 3  """ 
 4  import pyzzle 
 5  from Slide import Slide 
 6  from Hotspot import Hotspot 
 7  from DB import Table,Row 
 8   
 9 -class Switch: 
10      """A collection of slides and hotspots that together represent  
11      an object within the game world that has persistant on/off modes  
12      (switch, lever, button, etc.)  
13       
14      @warning: The Switch class is still very early in design,  
15      and I reserve the right to radically change as I see fit. 
16      You have been warned.  
17      """ 
18      __metaclass__=Table 
19       
20       
21      @staticmethod 
22 -    def _load(cells): 
23          row=Row(cells) 
24          onslide=Slide[row.onslide] if row.onslide else None 
25          offslide=Slide[row.offslide] if row.offslide else None 
26          switches=[] 
27          if row.onhotspot: switches+=[Hotspot[row.onhotspot]] 
28          if row.offhotspot: switches+=[Hotspot[row.offhotspot]] 
29          return Switch(onslide,offslide, switches, on=row.on, id=row.id) 
30 -    def __init__(self, onslide, offslide, hotspots, on=False, 
31                   onSwitch=lambda self:Switch.switch(self), id=None): 
32          if id: Switch.rows[id]=self 
33          self.id=id 
34          self.onslide=onslide 
35          self.offslide=offslide 
36          self.hotspots=hotspots 
37          self.on=on 
38          self._hotspot=None 
39          self.onSwitch=onSwitch 
40          def onClick(hotspot): 
41              self._hotspot=hotspot 
42              self.onSwitch(self) 
43          for hotspot in self.hotspots: 
44              hotspot.onClick=onClick 
45               
46 -    def switch(self): 
47          self.on=not self.on 
48          if self.onslide != self.offslide and all([self.onslide, self.offslide]): 
49              oldslide =self.offslide if self.on else self.onslide 
50              newslide =self.onslide  if self.on else self.offslide 
51              for link in oldslide.links: 
52                  if link not in self.hotspots: 
53                      link.link=newslide 
54              if self._hotspot: 
55                  self._hotspot.transition() 
56