woow jeezes, thanks for the amazingly fast and detailed response, you guys are amazing.
let's clear a few things up : 1) points is a module in vpython to make points, the points do in fact appear although its not really the effect i intended to have, the points are "lined up" in stead of randomly separated, if you know what i mean 2) sorry for the dutch names :) 3) i put the parenteces there and then i got a bunch of errors which i fixed 2 problems: a) my program seems to be stuck in the update phase of brandstoftank(=fuel tank), it doesnt get to the update of the spaceship b) the problem i originally described in my first post was not resolved, by means of elimination i could conclude that the problem situates itself in this lines : if (s == "left"): self.gas = rotate(self.gas,angle = math.pi/10, axis = (0,0,1)) c = list(self.frame.axis) c[2] -= 0.1 c = tuple(c) c = self.frame.axis if (s == "right") : self.gas = rotate(self.gas,angle = -(math.pi/10), axis = (0,0,1)) c = list(self.frame.axis) c[2] += 0.1 c = tuple(c) c = self.frame.axis i will put the full revisited 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_view = brandstofmeter_view() self.ruimteschip = ruimteschip() self.view = game_view(self) def play(self): t=0 dt=0.01 while t<999999999: time.sleep(0.01) self.brandstofmeter_view.update() self.ruimteschip.update(dt) t = t + dt 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_view(object): def __init__(self): axis = 0 self.pos = (220,345) self.meter = box(pos = self.pos, lenght = 25, height = 45,color = color.green) def update (self): s = scene.kb.getkey() if (s == "up"): self.meter.height = self.meter.height - 1 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 = (1,0,0) self.view = ruimteschip_view(self) self.vlam = self.view.vlam self.frame = self.view.frame def update(self,dt): self.velocity = self.velocity + (self.acceleration * dt) self.pos = self.pos + self.velocity * dt a = 0 b = 0 if scene.kb.keys: a = a + 0.001 s = scene.kb.getkey() if (s == "up"): self.velocity = self.velocity + self.gas self.vlam.visible = True b = b + 2 if (s == "left"): self.gas = rotate(self.gas,angle = math.pi/10, axis = (0,0,1)) c = list(self.frame.axis) c[2] -= 0.1 c = tuple(c) c = self.frame.axis if (s == "right") : self.gas = rotate(self.gas,angle = -(math.pi/10), axis = (0,0,1)) c = list(self.frame.axis) c[2] += 0.1 c = tuple(c) c = self.frame.axis if (a == 0): self.vlam.visible = False 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 thanks again, are you guys getting paid for this or is this voluntarily? either way i really appreciate it -- http://mail.python.org/mailman/listinfo/python-list