我正在学习使用kivy和python。我正在按照本教程创建一个简单的乒乓球游戏
https://kivy.org/docs/tutorials/pong.html
当我到达我试图为球制作动画的部分时。我完全按照教程编写了代码。我使用F5从IDLE运行程序,我得到了一个
return game()
Type Error: 'PongGame' object is not callable
交互式shell中的消息和游戏本身的窗口冻结。有关如何解决此问题的任何想法?提前致谢
这是我写的代码(完全和教程一样): -
main.py的代码
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.properties import NumericProperty, ReferenceListProperty,\
ObjectProperty
from kivy.vector import Vector
from kivy.clock import Clock
from random import randint
class PongBall(Widget):
velocity_x = NumericProperty(0)
velocity_y = NumericProperty(0)
velocity = ReferenceListProperty(velocity_x, velocity_y)
def move(self):
self.pos = Vector(*self.velocity) + self.pos
class PongGame(Widget):
ball = ObjectProperty(None)
def serve_ball(self):
self.ball.center = self.center
self.ball.velocity = Vector(4, 0).rotate(randint(0, 360))
def update(self, dt):
self.ball.move()
# bounce off top and bottom
if (self.ball.y < 0) or (self.ball.top > self.height):
self.ball.velocity_y *= -1
# bounce off left and right
if (self.ball.x < 0) or (self.ball.right > self.width):
self.ball.velocity_x *= -1
class PongApp(App):
def build(self):
game = PongGame()
game.serve_ball()
Clock.schedule_interval(game.update, 1.0 / 60.0)
return game
if __name__ == '__main__':
PongApp().run()
pong.kv的代码
#:kivy 1.0.9
<PongBall>:
size: 50, 50
canvas:
Ellipse:
pos: self.pos
size: self.size
<PongGame>:
ball: pong_ball
canvas:
Rectangle:
pos: self.center_x-5, 0
size: 10, self.height
Label:
font_size: 70
center_x: root.width / 4
top: root.top - 50
text: "0"
Label:
font_size: 70
center_x: root.width * 3 / 4
top: root.top - 50
text: "0"
PongBall:
id: pong_ball
center: self.parent.center
答案 0 :(得分:0)
在您的文件(Python和kv)中,您有多个身份错误。将您的代码与原始代码进行比较,您会发现错误。
有关身份识别的更多信息,请查看此处:https://www.python.org/dev/peps/pep-0008/#indentation。