49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
from kivy.app import App
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from kivy.uix.widget import Widget
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from kivy.properties import (
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NumericProperty, ReferenceListProperty, ObjectProperty
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)
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from kivy.vector import Vector
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from kivy.clock import Clock
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from random import randint
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class PongBall(Widget):
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velocity_x = NumericProperty(0)
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velocity_y = NumericProperty(0)
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velocity = ReferenceListProperty(velocity_x, velocity_y)
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def move(self):
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self.pos = Vector(*self.velocity) + self.pos
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class PongGame(Widget):
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ball = ObjectProperty(None)
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def serve_ball(self):
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self.ball.center = self.center
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self.ball.velocity = Vector(4, 0).rotate(randint(0, 360))
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def update(self, dt):
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self.ball.move()
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# bounce off top and bottom
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if (self.ball.y < 0) or (self.ball.top > self.height):
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self.ball.velocity_y *= -1
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# bounce off left and right
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if (self.ball.x < 0) or (self.ball.right > self.width):
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self.ball.velocity_x *= -1
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class PongApp(App):
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def build(self):
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game = PongGame()
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game.serve_ball()
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Clock.schedule_interval(game.update, 1.0 / 60.0)
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return game
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if __name__ == '__main__':
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PongApp().run()
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