problem with exam task for college

[jeltedeproft_8 at hotmail.com]

sorry for the extremely late reply, i have been very very busy :s

i implemented the solution that was posted in the second to last post. but now it gets a little confusing because i think a couple terms where deleted that i refered to in other code blocks, so once again i''l post the full code here



from visual import *
import time
import math
import random
from datetime import datetime
import operator 


class lunar_lander(object):
    def __init__(self):
        scene.title = 'mini star wars'
        scene.width = 375
        scene.height = 550
        scene.center = (0,0)
        self.pos = (0,0)
        self.axis = 0
        self.brandstofmeter = brandstofmeter()
        self.ruimteschip = ruimteschip()
        self.view = game_view(self)
        
        

    def play(self):
        t=0
        dt=0.01
        self.ruimteschip.updatemeter = False
        while t<999999999:
            time.sleep(0.01)
            self.ruimteschip.update(dt)
            t = t + dt
            if self.ruimteschip.updatemeter == True:
                self.brandstofmeter.update
                
                

            
            
class game_view(object):
    def __init__(self,owner):
        autoscale=True
        box(pos=( 0, -375, 0), length=500, height=5, width=0, color = color.white)
        box(pos=(0,375, 0), length=500, height=5, width=0, color = color.white)
        box(pos=(-250,0, 0), length=5, height=750, width=0, color = color.white)
        box(pos=(250,0, 0), length=5, height=750, width=0, color = color.white)
    
        maan = curve(pos=[(-250,-353),(-240,-341),(-210,-354),(-199.5,-374)],color=color.red)
        maana = curve(pos=[(-199.5,-374),(-166,-374)],color=color.green)
        maanb = curve(pos=[(-166,-374),(-140,-357),(-80,-319),(-40,-361),(0,-321),(40,-329),(80,-347)],color=color.red)
        maanc = curve(pos=[(80,-347),(140,-347)],color=color.green)
        maand = curve(pos=[(140,-347),(162,-337),(189.5,-365),(210,-355),(240,-372),(250,-338)],color=color.red)

        for i in random.sample(range (-250,250),20):
            for j in random.sample(range (-375,375),20):
                sterren = points(pos = [i,j,0],size = 2, color=color.white)



                
class brandstofmeter(object):
    def __init__(self):
        axis = 0
        self.pos = (210,345)
        self.length = 25
        self.height = 45
        self.meter = box(pos = self.pos, length = self.length, height = self.height,color = color.green)
    def update(self):
        self.height = self.height - 0.2
        print "ok"
        
                    
                    
        
class ruimteschip(object):
    def __init__(self):
        self.pos = vector(0,330)
        self.acceleration = vector(0,-88,0)
        self.axis = (1,0,0)
        self.hoek = (90*math.pi)/180
        self.graden = math.degrees(self.hoek)
        self.gas = vector(10 * cos(self.hoek),10 * sin (self.hoek))
        self.velocity = vector(0,0,0)
        self.angle = pi / 2
        self.updatemeter = False
        self.view = ruimteschip_view(self)
        self.vlam = self.view.vlam
        self.frame = self.view.frame
        self.zicht = brandstofmeter()
        
        

    def update(self,dt):
        self.velocity = self.velocity + (self.acceleration * dt)
        self.pos = self.pos + self.velocity * dt
        
        if scene.kb.keys:
            key = scene.kb.getkey()
            if key == "left":
                # Set left deviation
                self.frame.axis -= (0, 0, 0.05)
                self.gas = vector(-sin(self.angle), cos(self.angle))

            elif key == "right":
                # Set right deviation
                self.frame.axis += (0, 0, 0.05)
                self.gas = vector(sin(self.angle), cos(self.angle))

            elif key == "up":
                self.deviate()

    def deviate(self):
        # Set modified velocity
        self.frame.velocity += self.gas
        self.frame.pos += self.frame.velocity
        # Reset falling velocity
        self.frame.velocity -= self.gas

            
             
        if self.pos.x > 250:
            self.pos.x = -250
        if self.pos.x < -250:
            self.pos.x = 250
        self.view.update(self)
                    
class ruimteschip_view(object):
    def __init__(self,owner):
        self.owner = owner
        self.frame = frame(pos = owner.pos,axis = owner.axis)
        self.motor = curve(frame = self.frame,pos=[(0,24.0),(22.0,24.0),(22.0,39.0),(-22.0,39.0),(-22,24),(0,24)])
        self.capsule = curve(frame = self.frame,color = color.blue ,pos=[(0,39),(-3,39),(-9,44),(-12,46),(-18,48),(-22,50),(-18,52),(-12,54),(-9,56),(-3,61),(0,61),(3,59),(9,56),(12,54),(18,52),(22,50),(18,48),(12,46),(9,44),(3,39),(0,39)])
        self.poota = curve(frame = self.frame,pos = [(-18,24),(-20,24),(-20,0),(-18,0),(-18,24)])
        self.pootb = curve(frame = self.frame,pos = [(18,24),(20,24),(20,0),(18,0),(18,24)])
        self.vlam = curve(frame = self.frame,color = color.orange , visible=false,pos = [(0,24.0),(-9.0,14.0),(0,-5.0),(9,14.0),(0,24.0)])
        
    def update(self,owner):
        self.frame.axis = owner.axis  
        self.frame.pos = owner.pos