在 kivy pong 教程中,有我在计算机上运行的完整代码,它工作得非常好,但如果在 Racket 边缘击球,则会显示出疯狂的运动。我不确定发生了什么事。我尝试观察它很多次,我认为球在桨内碰撞了很多次,所以速度不断增加 X1.1,这会导致随机运动。但我怎样才能让它发挥作用呢?我尝试更改时钟功能时间但没有结果。应该有碰撞检查方法,但我无法做到。有什么帮助吗?
代码(我没有附加 .kv 文件,我认为这里不需要它):
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
class PongPaddle(Widget):
score = NumericProperty(0)
orientation = ObjectProperty([0, 0])
def bounce_ball(self, ball):
if self.collide_widget(ball) :
vx, vy = ball.velocity
offset = (ball.center_y - self.center_y) / (self.height / 2)
bounced = Vector(-1 * vx, vy)
vel = bounced * 1.1
ball.velocity = vel.x, vel.y + offset
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)
player1 = ObjectProperty(None)
player2 = ObjectProperty(None)
def serve_ball(self, vel=(4, 0)):
self.ball.center = self.center
self.ball.velocity = vel
def update(self, dt):
self.ball.move()
#bounce of paddles
self.player1.bounce_ball(self.ball)
self.player2.bounce_ball(self.ball)
#bounce ball off bottom or top
if (self.ball.y < self.y) or (self.ball.top > self.top):
self.ball.velocity_y *= -1
#went of to a side to score point?
if self.ball.x < self.x:
self.player2.score += 1
self.serve_ball(vel=(4, 0))
if self.ball.x > self.width:
self.player1.score += 1
self.serve_ball(vel=(-4, 0))
def on_touch_move(self, touch):
if touch.x < self.width / 3:
self.player1.center_y = touch.y
if touch.x > self.width - self.width / 3:
self.player2.center_y = touch.y
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()
最佳答案
例如,您可以跟踪自上次碰撞以来球是否离开了 Racket 。如果有,则照常应用新的碰撞。如果尚未发生,则在发生之前不要应用任何新的碰撞。
关于python - 在 Racket 末端击球显示随机运动,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34526312/