forked from preaw59090032/sep_lab8.3
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Hanoi.py
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Hanoi.py
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from tkinter import *
from turtle import TurtleScreen, RawTurtle
class Disc(RawTurtle):
def __init__(self, cv):
RawTurtle.__init__(self, cv, shape="square", visible=False)
self.pu()
self.goto(-140, 200)
def config(self, k, n):
self.hideturtle()
f = float(k + 1) / n
self.shapesize(0.5, 1.5 + 5 * f) # square-->rectangle
self.fillcolor(f, 0, 1 - f)
self.showturtle()
class Pole(list):
def __init__(self, x):
self.x = x
def push(self, d):
d.setx(self.x)
d.sety(-70 + 10 * len(self))
self.append(d)
def pop(self, y=90):
d = list.pop(self)
d.sety(y)
return d
class HanoiEngine:
def __init__(self, canvas, nrOfDiscs, speed, moveCntDisplay=None):
self.ts = canvas
self.ts.tracer(False)
# setup scene
self.designer = RawTurtle(canvas, shape="square")
self.designer.penup()
self.designer.shapesize(0.5, 21)
self.designer.goto(0, -80);
self.designer.stamp()
self.designer.shapesize(7, 0.5)
self.designer.fillcolor('yellow')
for x in -140, 0, 140:
self.designer.goto(x, -5);
self.designer.stamp()
self.nrOfDiscs = nrOfDiscs
self.speed = speed
self.moveDisplay = moveCntDisplay
self.running = False
self.moveCnt = 0
self.discs = [Disc(canvas) for i in range(10)]
self.towerA = Pole(-140)
self.towerB = Pole(0)
self.towerC = Pole(140)
self.ts.tracer(True)
def setspeed(self):
for disc in self.discs: disc.speed(self.speed)
def hanoi(self, n, src, dest, temp):
if n > 0:
for x in self.hanoi(n - 1, src, temp, dest): yield None
yield self.move(src, dest)
for x in self.hanoi(n - 1, temp, dest, src): yield None
def move(self, src_tower, dest_tower):
dest_tower.push(src_tower.pop())
self.moveCnt += 1
self.moveDisplay(self.moveCnt)
def reset(self):
self.ts.tracer(False)
self.moveCnt = 0
self.moveDisplay(0)
for t in self.towerA, self.towerB, self.towerC:
while t != []: t.pop(200)
for k in range(self.nrOfDiscs - 1, -1, -1):
self.discs[k].config(k, self.nrOfDiscs)
self.towerA.push(self.discs[k])
self.ts.tracer(True)
self.HG = self.hanoi(self.nrOfDiscs,
self.towerA, self.towerC, self.towerB)
def run(self):
self.running = True
try:
while self.running:
result = self.step()
return result # True iff done
except StopIteration: # game over
return True
def step(self):
try:
next(self.HG)
return 2 ** self.nrOfDiscs - 1 == self.moveCnt
except TclError:
return False
def stop(self):
self.running = False
class Hanoi:
def displayMove(self, move):
self.moveCntLbl.configure(text="")
def adjust_nr_of_discs(self, e):
self.hEngine.nrOfDiscs = self.discs.get()
self.reset()
def adjust_speed(self, e):
self.hEngine.speed = self.tempo.get() % 10
self.hEngine.setspeed()
def setState(self, STATE):
self.state = STATE
try:
if STATE == "START":
self.discs.configure(state=NORMAL)
self.discs.configure(fg="black")
self.discsLbl.configure(fg="black")
self.resetBtn.configure(state=DISABLED)
self.startBtn.configure(text="start", state=NORMAL)
self.stepBtn.configure(state=NORMAL)
elif STATE == "RUNNING":
self.discs.configure(state=DISABLED)
self.discs.configure(fg="gray70")
self.discsLbl.configure(fg="gray70")
self.resetBtn.configure(state=DISABLED)
self.startBtn.configure(text="pause", state=NORMAL)
self.stepBtn.configure(state=DISABLED)
elif STATE == "PAUSE":
self.discs.configure(state=NORMAL)
self.discs.configure(fg="black")
self.discsLbl.configure(fg="black")
self.resetBtn.configure(state=NORMAL)
self.startBtn.configure(text="resume", state=NORMAL)
self.stepBtn.configure(state=NORMAL)
elif STATE == "DONE":
self.discs.configure(state=NORMAL)
self.discs.configure(fg="black")
self.discsLbl.configure(fg="black")
self.resetBtn.configure(state=NORMAL)
self.startBtn.configure(text="start", state=DISABLED)
self.stepBtn.configure(state=DISABLED)
elif STATE == "TIMEOUT":
self.discs.configure(state=DISABLED)
self.discs.configure(fg="gray70")
self.discsLbl.configure(fg="gray70")
self.resetBtn.configure(state=DISABLED)
self.startBtn.configure(state=DISABLED)
self.stepBtn.configure(state=DISABLED)
except TclError:
pass
def reset(self):
self.hEngine.reset()
self.setState("START")
def start(self):
if self.state in ["START", "PAUSE"]:
self.setState("RUNNING")
if self.hEngine.run():
self.setState("DONE")
else:
self.setState("PAUSE")
elif self.state == "RUNNING":
self.setState("TIMEOUT")
self.hEngine.stop()
def step(self):
self.setState("TIMEOUT")
if self.hEngine.step():
self.setState("DONE")
else:
self.setState("PAUSE")
def __init__(self, nrOfDiscs, speed):
root = Tk()
root.title("TOWERS OF HANOI")
cv = Canvas(root, width=440, height=210, bg="gray90")
cv.pack()
cv = TurtleScreen(cv)
self.hEngine = HanoiEngine(cv, nrOfDiscs, speed, self.displayMove)
fnt = ("Arial", 12, "bold")
# set attributes: nr of discs, speed; display move count
attrFrame = Frame(root) # contains scales to adjust game's attributes
self.discsLbl = Label(attrFrame, width=7, height=2, font=fnt,
text="")
self.discs = Scale(attrFrame, from_=1, to_=10, orient=HORIZONTAL,
font=fnt, length=0, showvalue=0, repeatinterval=10,
command=self.adjust_nr_of_discs)
self.discs.set(3)
self.tempoLbl = Label(attrFrame, width=8, height=2, font=fnt,
text="")
self.tempo = Scale(attrFrame, from_=1, to_=10, orient=HORIZONTAL,
font=fnt, length=0, showvalue=0, repeatinterval=10,
command=self.adjust_speed)
self.tempo.set(5)
self.moveCntLbl = Label(attrFrame, width=5, height=2, font=fnt,
padx=20, text="", anchor=CENTER)
for widget in (self.discsLbl, self.discs, self.tempoLbl, self.tempo,
self.moveCntLbl):
widget.pack(side=LEFT)
attrFrame.pack(side=TOP)
# control buttons: reset, step, start/pause/resume
ctrlFrame = Frame(root) # contains Buttons to control the game
self.resetBtn = Button(ctrlFrame, width=11, text="reset", font=fnt,
state=DISABLED, padx=15, command=self.reset)
self.stepBtn = Button(ctrlFrame, width=11, text="step", font=fnt,
state=NORMAL, padx=15, command=self.step)
self.startBtn = Button(ctrlFrame, width=11, text="start", font=fnt,
state=NORMAL, padx=15, command=self.start)
for widget in self.resetBtn, self.startBtn:
widget.pack(side=LEFT)
ctrlFrame.pack(side=TOP)
self.state = "START"
root.mainloop()
if __name__ == "__main__":
Hanoi(1, 1)