| 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, `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() |