On Thu, Sep 30, 2010 at 1:45 PM, ALAN GAULD <alan.ga...@btinternet.com> wrote:
> Copy the code into a text file with a name ending in .py - lets call it
> myfile.py for now
> (if you have not already done so)
>
> From a bash prompt type
>
> $ python myfile.py
>
> Then cut n paste any error messages into an email to the list
well, actually i corrected the code so that the function outOfBounds()
is directly called (as you can see hereafter);
but if you have time to run the code you'll see the same strange
behavior as me (maybe):
when the arrow hits anyone of the window borders, it gets stuck back
and forth indefinitely and never starts the path again
thank you in advance
##############################################################################
import turtle, random
def checkForward(distance):
old_position = turtle.position()
turtle._pen.up()
# no show/hide turtle methods in my turtle module !
turtle.forward(distance)
forward_failed = outOfBounds()
turtle.setx(old_position[0]); turtle.sety(old_position[1])
turtle._pen.down()
# no show/hide turtle methods in my turtle module !
if outOfBounds() == 'false':
turtle.forward(distance)
def stuck():
return forward_failed
def outOfBounds():
if (abs(turtle.position()[0]) > turtle.window_height()/2) or
(abs(turtle.position()[1]) > turtle.window_width()/2):
return "true"
else:
return "false"
def randomMove2(d1, d2, a1, a2):
while 1:
turtle.left(random.uniform(a1,a2))
checkForward(random.uniform(d1,d2))
if outOfBounds() == 'true':
turtle.right(180)
#############################################################################
--
roberto
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