How to use oop with panda?

Scripting Issues
1 
# To change this template, choose Tools | Templates
# and open the template in the editor.


from direct.showbase.ShowBase import ShowBase
from panda3d.core import *
from direct.actor.Actor import Actor
from direct.interval.IntervalGlobal import *

from direct.gui.OnscreenText import OnscreenText
from pandac.PandaModules import loadPrcFileData
from panda3d.core import Vec3
from direct.gui.OnscreenImage import OnscreenImage

class Application(ShowBase):

    def __init__(self):
        ShowBase.__init__(self)

        self.dude = self.mainDude()
        
        
        class mainDude(object, self):
            
            def __init__(self):
                self.smiley = loader.loadModel("smiley")
                self.smiley.reparentTo(render)
                self.smiley.setPos(0,  0,  0)

But I get “application instance has no attribute mainDude”

2

First of all, why are you attempting to define the “mainDude” within the “init” method of Application, instead of outside of the Application class entirely? I gather that such a thing is possible in Python, but I’m not sure of what benefit it provides here…

Secondly, you seem to be defining “mainDude” after you attempt to use it: “self.dude = self.mainDude()” presumes that “mainDude” has been defined at that point, which I don’t believe that it has. If “mainDude” were a method of the class defined outside of the “init” method then this would likely work, but within the same method I suspect that the definition of “mainDude” simply hasn’t yet been reached.

3

How about this?

from direct.showbase.ShowBase import ShowBase

class SmileyApplication(ShowBase):

    def __init__(self):
        ShowBase.__init__(self)

        self.dude = MainDude()
        self.dude.load()
        
        
class MainDude(object):
    def load(self):
        self.smiley = loader.loadModel("smiley")
        self.smiley.reparentTo(render)
        # position is 0,0,0 by default. no need to set it
        #self.smiley.setPos(0,  0,  0)

This way you can also split your classes over multiple files.

4

Or, if you wan’t automatic load on creation of your MainDude:

from direct.showbase.ShowBase import ShowBase

class SmileyApplication(ShowBase):

    def __init__(self):
        ShowBase.__init__(self)

        self.dude = MainDude()
        
        
class MainDude(object):
    def __init__(self):
        self.load()


    def load(self):
        self.smiley = loader.loadModel("smiley")
        self.smiley.reparentTo(render)
        # position is 0,0,0 by default. no need to set it
        #self.smiley.setPos(0,  0,  0)