如何在屏幕上显示游戏?
问题描述:
我想用启动菜单制作一个kivy应用程序,但是我无法在第二个屏幕上显示我的乒乓游戏。我应该如何参考游戏使其可见?我试过并搜索过但找不到任何东西。我100%确定PongGame正常工作,我无法显示它。如果有人能告诉我如何正确地做到这一点,那将是非常棒的。如何在屏幕上显示游戏?
Main.py:
from kivy.app import App
from kivy.uix.screenmanager import ScreenManager, Screen, WipeTransition
from kivy.properties import ObjectProperty
from kivy.uix.widget import Widget
from kivy.properties import NumericProperty, ReferenceListProperty,\
ObjectProperty
from kivy.vector import Vector
from kivy.clock import Clock
from kivy.uix.popup import Popup
from kivy.uix.label import Label
class PongPaddle(Widget):
score = NumericProperty(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))
if self.player1.score == 10:
popup = Popup(title='Test popup', content=Label(text='Hello world'), auto_dismiss=False)
return popup
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 ScreenThree(Screen):
pass
class ScreenTwo(Screen):
pass
class ScreenOne(Screen):
pass
class Manager(ScreenManager):
screen_one = ObjectProperty(None)
screen_two = ObjectProperty(None)
screen_three = ObjectProperty(None)
class ScreensApp(App):
def build(self):
m = Manager(transition=WipeTransition())
return m
if __name__ == '__main__':
ScreensApp().run()
screen.kv:
<PongBall>:
size: 50, 50
canvas:
Ellipse:
pos: self.pos
size: self.size
<PongPaddle>:
size: 25, 200
canvas:
Rectangle:
pos:self.pos
size:self.size
<PongGame>:
ball: pong_ball
player1: player_left
player2: player_right
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: str(root.player1.score)
Label:
font_size: 70
center_x: root.width * 3/4
top: root.top - 50
text: str(root.player2.score)
PongBall:
id: pong_ball
center: self.parent.center
PongPaddle:
id: player_left
x: root.x
center_y: root.center_y
PongPaddle:
id: player_right
x: root.width-self.width
center_y: root.center_y
<ScreenOne>:
Button:
text: "Screen 1 >> Screen 2"
on_press: root.manager.current = 'screen2'
<ScreenTwo>:
def build(self):
game = PongGame()
game.serve_ball()
Clock.schedule_interval(game.update, 1.0/60.0)
return game
<ScreenThree>:
Button:
text: "Screen 3 >> Screen 1"
on_press: root.manager.current = 'screen1'
<Manager>:
id: screen_manager
screen_one: screen_one
screen_two: screen_two
screen_three: screen_three
ScreenOne:
id: screen_one
name: 'screen1'
manager: screen_manager
ScreenTwo:
id: screen_two
name: 'screen2'
manager: screen_manager
ScreenThree:
id: screen_three
name: 'screen3'
manager: screen_manager
答
嘛!你的程序中有很多错误,我不得不做出改进。 (我理解你是初学者)
首先,请仔细阅读完整的kivy language documentation,因为我可以清楚地看到你直接从编码开始而不掌握基本知识。 您可以制作几款优秀的游戏,但从长远来看,您将面临如果没有明确概念就无法解决的问题。 不幸的是,你将无法发现kivy的真实权力。 :)
您可能还想修改您的python概念。
一些改进不值得一提,但很重要,当你阅读代码时你会明白。
改进1:
如果您在建立()返回一个小部件的应用程序可以建立,或者如果您设置self.root(但你不能再ñ再次提出申请) 你在这里做的:
<ScreenTwo>:
def build(self):
game = PongGame()
game.serve_ball()
Clock.schedule_interval(game.update, 1.0/60.0)
return game
改进2:
当你点击按钮打乒乓球这是屏幕游戏。你的游戏始于球的服务。
on_release: root.current = 'game';game.serve_ball()
(知识)
如果你仍然得到你可能要检查kivy文件的名称黑屏,为您既可以去kivy文档或this link
class PongPaddle(Widget):
score = NumericProperty(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 __init__(self, *args, **kwargs):
super(PongGame, self).__init__(*args, **kwargs)
Clock.schedule_interval(self.update, 1.0/60.0)
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 Manager(ScreenManager):
pass
class ScreensApp(App):
def build(self):
self.load_kv('t6.kv')
return Manager(transition=WipeTransition())
if __name__ == '__main__':
ScreensApp().run()
这是kv文件。
<PongBall>:
size: 50, 50
canvas:
Ellipse:
pos: self.pos
size: self.size
<PongPaddle>:
size: 25, 200
canvas:
Rectangle:
pos:self.pos
size:self.size
<PongGame>:
ball: pong_ball
player1: player_left
player2: player_right
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: str(root.player1.score)
Label:
font_size: 70
center_x: root.width * 3/4
top: root.top - 50
text: str(root.player2.score)
PongBall:
id: pong_ball
center: self.parent.center
PongPaddle:
id: player_left
x: root.x
center_y: root.center_y
PongPaddle:
id: player_right
x: root.width-self.width
center_y: root.center_y
<Manager>:
id: screen_manager
Screen:
name: 'home'
Button:
text: 'Play Ping Pong'
halign: 'center'
valign: 'middle'
font_size: 100
text_size: self.size
on_release: root.current = 'game';game.serve_ball()
Screen:
name: 'game'
PongGame:
id: game
非常感谢!我认为我比初学者更多,你的建议非常有帮助。现在一切正常,很容易理解为什么。再次非常感谢你! :) – RIP
我很高兴帮助:) – kiok46