mirror of https://github.com/kivy/kivy.git
78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
import kivy
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kivy.require('1.1.1')
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from kivy.app import App
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from kivy.uix.widget import Widget
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from kivy.properties import NumericProperty, ReferenceListProperty,\
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ObjectProperty
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from kivy.vector import Vector
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from kivy.clock import Clock
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class PongPaddle(Widget):
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score = NumericProperty(0)
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def bounce_ball(self, ball):
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if self.collide_widget(ball):
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vx, vy = ball.velocity
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offset = (ball.center_y - self.center_y) / (self.height / 2)
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bounced = Vector(-1 * vx, vy)
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vel = bounced * 1.1
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ball.velocity = vel.x, vel.y + offset
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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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player1 = ObjectProperty(None)
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player2 = ObjectProperty(None)
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def serve_ball(self, vel=(4, 0)):
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self.ball.center = self.center
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self.ball.velocity = vel
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def update(self, dt):
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self.ball.move()
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# bounce ball off paddles
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self.player1.bounce_ball(self.ball)
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self.player2.bounce_ball(self.ball)
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# bounce ball off bottom or top
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if (self.ball.y < self.y) or (self.ball.top > self.top):
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self.ball.velocity_y *= -1
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# went off a side to score point?
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if self.ball.x < self.x:
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self.player2.score += 1
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self.serve_ball(vel=(4, 0))
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if self.ball.x > self.width:
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self.player1.score += 1
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self.serve_ball(vel=(-4, 0))
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def on_touch_move(self, touch):
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if touch.x < self.width / 3:
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self.player1.center_y = touch.y
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if touch.x > self.width - self.width / 3:
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self.player2.center_y = touch.y
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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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