我目前正在努力解决Kivy的屏幕管理功能。虽然它在菜单中工作,但它不会显示角色。我在文档中没有找到任何有用的信息。
这很好,所以类不是问题:
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.image import Image
from kivy.core.window import Window
class Character(Widget):
pass
class Basic(Image):
def __init__(self, **kwargs):
super(Basic, self).__init__(**kwargs)
self._keyboard = Window.request_keyboard(None, self)
if not self._keyboard:
return
self._keyboard.bind(on_key_down=self.on_keyboard_down)
print('Basic initialised')
def on_keyboard_down(self, keyboard, keycode, text, modifiers):
if keycode[1] == 'left':
self.x -= 10
print('pressed left')
elif keycode[1] == 'right':
self.x += 10
print('pressed right')
elif keycode[1] == 'up':
self.y += 10
print('pressed up')
elif keycode[1] == 'down':
self.y -= 10
print('pressed down')
else:
return False
return True
class HemeApp(App):
def build(self):
wimg = Basic(source='sprite.png')
m = Character()
m.add_widget(wimg)
return m
if __name__ == '__main__':
HemeApp().run()
但当我想在ScreenManager的游戏屏幕上显示它时,它只是一个黑屏。
代码如下:
from kivy.app import App
from kivy.lang import Builder
from kivy.clock import Clock
from kivy.config import Config
from kivy.vector import Vector
from kivy.uix.label import Label
from kivy.uix.popup import Popup
from kivy.uix.image import Image
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.core.window import Window
from kivy.animation import Animation
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.screenmanager import ScreenManager, Screen
Builder.load_file('heme.kv')
##############################################################################################################################
class HemeApp(App):
title = 'geme'
icon = 'custoicon.png'
def build(self):
sm = ScreenManager()
sm.add_widget(MenuScreen(name='menu'))
sm.add_widget(SettingsScreen(name='settings'))
sm.add_widget(CharacterCreationScreen(name='creationscreen'))
sm.add_widget(GameScreen(name='gameplay'))
return sm
def save(self, plrname):
fob = open('stats.txt', 'w+')
fob.write(plrname + "\n")
fob.close()
class MenuScreen(Screen):
pass
class SettingsScreen(Screen):
pass
class CharacterCreationScreen(Screen):
pass
class Character(Widget):
pass
class GameScreen(Screen):
def playy(self):
print ('playy fired')
wimg = Basic(source='sprite.png')
m = Character()
m.add_widget(wimg)
return m
def on_enter(self):
print ("on_enter fired")
self.playy()
class MyButton(ButtonBehavior, Image):
def __init__(self, **kwargs):
super(MyButton, self).__init__(**kwargs)
self.source = 'button.png'
def on_press(self):
self.source = 'button_pressed.png'
def on_release(self):
self.source = 'button.png'
class Basic(Image):
def __init__(self, **kwargs):
super(Basic, self).__init__(**kwargs)
self._keyboard = Window.request_keyboard(None, self)
if not self._keyboard:
return
self._keyboard.bind(on_key_down=self.on_keyboard_down)
print('Basic initialised')
def on_keyboard_down(self, keyboard, keycode, text, modifiers):
print ('on_keyboard_down active')
if keycode[1] == 'left':
self.x -= 10
elif keycode[1] == 'right':
self.x += 10
else:
return False
return True
if __name__ == '__main__':
HemeApp().run()
加上Kivy代码:
#; kivy 1.10.0
#:import Factory kivy.factory.Factory
<MenuScreen>:
FloatLayout:
canvas.before:
Rectangle:
pos: self.pos
size: self.size
source: 'bg.png'
MyButton:
pos: (330, 400)
allow_stretch: True
background_color: (0,1,0,1)
size_hint: (.2,.2)
text: 'Play'
on_release:
root.manager.transition.direction = 'right'
root.manager.current = 'creationscreen'
Label:
pos: (330, 450)
text: 'Play'
color: (1,0,0)
MyButton:
pos: (330, 300)
size_hint: (.2,.2)
text: 'Goto settings'
on_release:
root.manager.transition.direction = 'right'
root.manager.current = 'settings'
MyButton:
pos: (330, 200)
background_color: (1,0,0,1)
size_hint: (.2,.2)
text: 'Quit'
on_release: exit()
<SettingsScreen>:
FloatLayout:
MyButton:
pos: (330, 400)
size_hint: (.2,.2)
text: 'My settings button'
MyButton:
pos: (330, 300)
size_hint: (.2,.2)
text: 'Back to menu'
on_release:
root.manager.transition.direction = 'left'
root.manager.current = 'menu'
<CharacterCreationScreen>:
name: name_input
FloatLayout:
MyButton:
pos: (330, 400)
name: name_input
size_hint: (.2,.2)
text: 'Start game'
on_release:
root.manager.transition.direction = 'right'
root.manager.current = 'gameplay'
MyButton:
pos: (430, 300)
text: 'Save'
on_release: app.save(name_input.text)
size_hint: (.2,.2)
TextInput:
pos: (230, 300)
id: name_input
font_size: 20
multiline: False
size_hint: (.2,.2)
MyButton:
pos: (330, 200)
size_hint: (.2,.2)
text: 'Back to menu'
on_release:
root.manager.transition.direction = 'left'
root.manager.current = 'menu'
<GameScreen>:
game: game
Character:
id: game
pos: self.pos
