mirror of https://github.com/python/cpython
55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
from Tkinter import *
|
|
|
|
import string
|
|
|
|
|
|
class Pong(Frame):
|
|
def createWidgets(self):
|
|
self.QUIT = Button(self, text='QUIT', foreground='red',
|
|
command=self.quit)
|
|
self.QUIT.pack(side=LEFT, fill=BOTH)
|
|
|
|
## The playing field
|
|
self.draw = Canvas(self, width="5i", height="5i")
|
|
|
|
## The speed control for the ball
|
|
self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
|
|
from_=-100, to=100)
|
|
|
|
self.speed.pack(side=BOTTOM, fill=X)
|
|
|
|
# The ball
|
|
self.ball = self.draw.create_oval("0i", "0i", "0.10i", "0.10i",
|
|
fill="red")
|
|
self.x = 0.05
|
|
self.y = 0.05
|
|
self.velocity_x = 0.3
|
|
self.velocity_y = 0.5
|
|
|
|
self.draw.pack(side=LEFT)
|
|
|
|
def moveBall(self, *args):
|
|
if (self.x > 5.0) or (self.x < 0.0):
|
|
self.velocity_x = -1.0 * self.velocity_x
|
|
if (self.y > 5.0) or (self.y < 0.0):
|
|
self.velocity_y = -1.0 * self.velocity_y
|
|
|
|
deltax = (self.velocity_x * self.speed.get() / 100.0)
|
|
deltay = (self.velocity_y * self.speed.get() / 100.0)
|
|
self.x = self.x + deltax
|
|
self.y = self.y + deltay
|
|
|
|
self.draw.move(self.ball, "%ri" % deltax, "%ri" % deltay)
|
|
self.after(10, self.moveBall)
|
|
|
|
def __init__(self, master=None):
|
|
Frame.__init__(self, master)
|
|
Pack.config(self)
|
|
self.createWidgets()
|
|
self.after(10, self.moveBall)
|
|
|
|
|
|
game = Pong()
|
|
|
|
game.mainloop()
|