嘿所有我正在做家庭作业,我必须通过pygame和livewire创建单人乒乓球游戏。我的代码大部分都已完成,但我确实有一个问题。屏幕不会更新,并且在这样做时,球拍不会移动并且球不会反弹。我在球拍和球上有一个更新方法,但由于某些原因,它不起作用。这是我的代码谢谢!
更新:我不得不重做一些事情,但我现在可以打电话给我的班级,然后球会反弹但是我不能移动球拍。我不知道为什么这不起作用,因为self.y = games.mouse.y应该更新我的球拍的y坐标。以下是我重新编辑的代码,感谢您的帮助!
from livewires import games, color
import random
#make screen size
games.init(screen_width = 640, screen_height = 480 , fps = 50)
class Paddle(games.Sprite):
image = games.load_image("paddle.bmp")
def __init__(self):
super(Paddle, self).__init__(image = Paddle.image,x = 10, y = games.mouse.y)
self.score = games.Text(value = 0, size = 25, color = color.black,
top = 20, right = games.screen.width - 8)
games.screen.add(self.score)
def update(self):
self.y = games.mouse.y
if self.top < 0:
self.top = 0
if self.bottom > games.screen.height:
self.bottom = games.screen.height
"""
self.check_hit()
def check_hit(self):
countdown = 0
if countdown == 0:
for ball in self.overlapping_sprites:
self.score.value += 1
ball.dat_touch()
countdown == 10
else: countdown -= 1
"""
class Ball(games.Sprite):
image = games.load_image("ball.bmp")
speed = 2
def __init__(self, x = games.screen.height/2, y = games.screen.height/2):
super(Ball,self).__init__(image = Ball.image,
x = x, y = y,
dx = Ball.speed, dy = Ball.speed)
def update(self):
if self.right > games.screen.width:
self.dx = -self.dx
if self.bottom > games.screen.height or self.top < 0:
self.dy = - self.dy
if self.left < 0:
self.end_game()
self.destroy()
#def dat_touch(self):
#self.dx = - self.dx
#handles paddle touch
#doesn't work = game_over
"""
def end_game(self):
end_message = games.Message(value = "Game Over",
size = 90,
color = color.red,
x = games.screen.width/2,
y = games.screen.height/2,
lifetime = 5 * games.screen.fps,
after_death = games.screen.quit)
games.screen.add(end_message)
"""
def main():
wall_image = games.load_image("background.bmp", transparent = False)
games.screen.background = wall_image
the_ball = Ball()
games.screen.add(the_ball)
the_paddle = Paddle()
games.screen.add(the_paddle)
games.mouse.is_visible = False
games.screen.event_grab = True
games.screen.mainloop()
main()
答案 0 :(得分:1)
我在这里看到一些问题:
首先,您已经定义了“Ball”和“Paddle”类,但您似乎没有使用它们。相反,您在main()函数中执行以下操作:
the_ball=games.Sprite(image=ball_image,
x=600,
y=250,
dx=2,
dy=-2)
通过仅将其定义为Sprite,您只使用已在LiveWire的Sprite对象中定义的逻辑,完全忽略您的Ball或Bar类。相反,您可能想要创建一个“Ball”和“Bar”对象。例如,要创建“Ball”对象,您可以将上面的行更改为...
the_ball=Ball(image=ball_image,
x=600,
y=250,
dx=2,
dy=-2)
所以,你已经定义了一个Ball类,并且(使用我上面提供的改变的代码)你将在坐标x = 600和y = 250处创建球。为了让这个球移动,x和y坐标需要改变。例如,要将其移动到正确的20个单位,x将需要更改为620。
因此,您需要考虑x和y坐标如何变化。浏览LiveWires代码(如果您感到好奇,请在下一堂课中与您的老师联系,了解如何访问LiveWires代码),我将阅读以下内容:
# Some [objects] will, more specifically, move at regular intervals;
# their classes should subclass Mover (which < Timer) and
# define a moved method.
所以,现在,你的Ball类只是继承自Sprite ......
class Ball(games.Sprite):
image = games.load_image("ball.bmp")
speed = 2
def __init__(self, x = 100, y = 100):
super(Ball, self).__init__(image = Ball.image,
x = x, y = y,
dx = Ball.speed, dy = Ball.speed)
尝试更改此内容,使其继承Sprite AND Mover ...
class Ball(games.Sprite, games.Mover):
image = games.load_image("ball.bmp")
speed = 2
def __init__(self, x = 100, y = 100):
super(Ball, self).__init__(image = Ball.image,
x = x, y = y,
dx = Ball.speed, dy = Ball.speed)
你在这里做的是使你的对象不仅继承了“Sprite”类的功能(它处理在提供的坐标上在屏幕上绘制),而且还继承了“Mover”类的功能(它根据dx和dy改变x和y值。
希望这会让你开始尝试做什么。