author | martin.trojer@nokia.com |
Fri, 31 Jul 2009 15:01:17 +0100 | |
changeset 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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#!/usr/bin/python |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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""" turtle-example-suite: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Initial QEMU (symbian-qemu-0.9.1-12) import
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tdemo_minimal_hanoi.py |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Initial QEMU (symbian-qemu-0.9.1-12) import
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A minimal 'Towers of Hanoi' animation: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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A tower of 6 discs is transferred from the |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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left to the right peg. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Initial QEMU (symbian-qemu-0.9.1-12) import
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An imho quite elegant and concise |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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implementation using a tower class, which |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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is derived from the built-in type list. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Discs are turtles with shape "square", but |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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stretched to rectangles by shapesize() |
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--------------------------------------- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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To exit press STOP button |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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--------------------------------------- |
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""" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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from turtle import * |
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|
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class Disc(Turtle): |
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def __init__(self, n): |
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Turtle.__init__(self, shape="square", visible=False) |
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self.pu() |
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self.shapesize(1.5, n*1.5, 2) # square-->rectangle |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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self.fillcolor(n/6., 0, 1-n/6.) |
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self.st() |
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class Tower(list): |
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"Hanoi tower, a subclass of built-in type list" |
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def __init__(self, x): |
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"create an empty tower. x is x-position of peg" |
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self.x = x |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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def push(self, d): |
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d.setx(self.x) |
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d.sety(-150+34*len(self)) |
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self.append(d) |
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def pop(self): |
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d = list.pop(self) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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d.sety(150) |
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return d |
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def hanoi(n, from_, with_, to_): |
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if n > 0: |
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hanoi(n-1, from_, to_, with_) |
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to_.push(from_.pop()) |
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hanoi(n-1, with_, from_, to_) |
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def play(): |
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onkey(None,"space") |
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clear() |
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hanoi(6, t1, t2, t3) |
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write("press STOP button to exit", |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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align="center", font=("Courier", 16, "bold")) |
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def main(): |
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global t1, t2, t3 |
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ht(); penup(); goto(0, -225) # writer turtle |
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t1 = Tower(-250) |
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t2 = Tower(0) |
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t3 = Tower(250) |
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# make tower of 6 discs |
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for i in range(6,0,-1): |
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t1.push(Disc(i)) |
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# prepare spartanic user interface ;-) |
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write("press spacebar to start game", |
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align="center", font=("Courier", 16, "bold")) |
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onkey(play, "space") |
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listen() |
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return "EVENTLOOP" |
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|
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if __name__=="__main__": |
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msg = main() |
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print msg |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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mainloop() |