python: writing to a curses window from a class

daweefolk · 03-24-2011, 10:18 AM

I'm trying to make a game in python with a nethack-style map, I'm using the curses module to organize my screen.
I have a class in a module (characters.py) called "Character", which will control npc movement. How can I make it so, when an npc moves or is created, the curses window mapwin in the main file (main.py) updates?
Something like (in the Characters class)

Code:

def __init__(self,y,x):
  self.y=y#track character's
  self.x=x#y and x location
  main.mapwin.addstr(self.y,self.x,"Q")
  #when created, place new character on 
  #map with the symbol "Q"
  main.mapwin.refresh()

I can't figure out how to access the curses windows from an external class. Is it even possible?

Snark1994 · 03-24-2011, 11:24 AM

You'd have to pass it to the class. What you could do is add another variable:

Code:

class Characters:
    window = None
    def __init__(self,y,x,window=None):
        self.y = y
        self.x = x

        if window != None:
            Characters.window = window
        Characters.window.addstr(self.y,self.x,"Q")
        Characters.window.refresh()

You would then at some point need to initialise a character and pass the 'window' argument, so it sets the variable for all characters. Alternatively, you could remove it from the constructor, and make a new function called "setClassWindow(window)" or something similar, which just sets "Characters.window = window"