Event Handler Class

Scripting Issues
1

Is it possible to make a DirectObject class to handle some event handling. Import the class into a ShowBase class to handle those events and and handle other events directly in the show base class?

2

ShowBase inherits from DirectObject, you know. You can use ‘base’ as if it was a usual DirectObject instance.

A good thing about grouping events with DOs, though, is that you have functions that affect only selected events; like deactivating all keybodard keys with one method.

Example:
Say you have a steering DO for a vehicle and want to switch to a menu, which takes different input events, of course. In this case you could simply disable the steering DO, switch the menu DO on and vice versa.

3

I think I’m just confused. Here is my code

from direct.showbase import DirectObject

Dist=.5

class Event(DirectObject.DirectObject):
     def __init__(self):
         self.accept('w',self.MovForward)
         self.accept('a',self.MovLeft)
         self.accept('s',self.MovBack)
         self.accept('d',self.MovRight)
         
     def MoveNP(NP):
        movNP=NP
    
     def MovForward():
        NP.setPos(0,Dist,0)
    
     def MovLeft():
        NP.setPos(Dist,0,0)
        
     def MovBack():
        NP.setPos(0,-Dist,0)
        NP.setPos(0,-Dist,0)
     
     def MovRight():
        NP.setPos(-Dist,0,0)

and the main app

from event import Event
from direct.showbase.ShowBase import ShowBase
 

 
class MyApp(ShowBase):
 
    def __init__(self):
        ShowBase.__init__(self)
        #insert mouse controls here.

        # Load the environment model.
        self.environ = self.loader.loadModel("models/environment")
        # Reparent the model to render.
        self.environ.reparentTo(self.render)
        # Apply scale and position transforms on the model.
        self.environ.setScale(0.25, 0.25, 0.25)
        self.environ.setPos(-8, 42, 0)
        
        self.disableMouse()
        EventH=Event.MoveNP(self.camera)
    
              

app = MyApp()
app.run()
4

You’re using the Event class wrong.
I suggest you make all its functions to methods (this is done by adding ‘self’ as first argument) and in your main file you use an instance of that classs then.