1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
from Tkinter import *
import string
class Pong(Frame):
def createWidgets(self):
self.QUIT = Button(self, {'text': 'QUIT',
'fg': '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": "horiz",
"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, `deltax` + "i", `deltay` + "i")
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()
|
