OO programing in vizard?

[renama]

Here is the code of the class (same with the previous attachement)

class MusicOnOff:
       def __init__(self,musicObj):
             self. Obj = musicObj
             self.musicIcon = viz.addTexQuad()
             self.musicIcon.texture(viz.add((‘musicOff.png')))
             self.musicOn = True
             viz.callback( viz.MOUSEDOWN_EVENT, self.onMouseDown )
       def onMouseDown(self, button):
             if button == viz.MOUSEBUTTON_LEFT:
                   object = viz.pick()
                   if object.valid() == False: return
                   if object == self.musicIcon:
                          if self.musicOn == True:
                                 self.musicOn = False
                                 self.musicIcon.texture(viz.add((‘musicOn.png')))
                                 self.Obj.pause()				
                          else:
                                 self.musicOn = True
                                 self.musicIcon.texture(viz.add((‘musicOff.png')))
                                 self.Obj.play()

[IGoudt]

From my experience, you can register events only once.
For example:

Class A registers a viz.MOUSEDOWN_EVENT
Class B registers a viz.MOUSEDOWN_EVENT

Then if I recall correctly the last register will overwrite the first. What I did to resolve this, is to put all the registers in one of the main, or container, classes. Whenever an event is triggered there, the main class redirects the event to the appropiate classes or objects.

In your case, I guess your main class creates an instance of the MusicOnOff class (a button), and saves it under a variable. Change to:

class MusicOnOff:
       def __init__(self,musicObj):
             self.Obj = musicObj
             self.musicIcon = viz.addTexQuad()
             self.pictures = [viz.add(‘musicOff.png'), viz.add('musicOn.png')]
             self.musicIcon.texture(self.pictures[1])
             self.musicOn = True
             
             
       def click(self):
             
             self.musicOn = not self.musicOn
             self.musicIcon.texture(self.pictures[self.musicOn])
             if not self.musicOn:
                    
                    self.Obj.pause()				
             else:
                    self.Obj.play()

[renama]

Thanks, IGoudt. You gave me a good idea for OO programming. I appreciate your help. It is your support that makes me keep searching and trying to work on it. Today I found vizact.onpick(object,fun,arg) can be used in this case. It can be called multiple times. Hope this found can help somebody who has the same coding problem in this situation

[farshizzo]

I highly suggest you read the section in the documentation about events, especially the Event Basics page. It describes how to register multiple callbacks for an event using viz.EventClass.

[renama]

Thanks farshizzo, that is great. I need register other events,like mouse move in my class and creating Event Class solved my problem completely.