如何在kivy中处理多个键盘输入？
如何在kivy中处理多个键盘输入？
提问于 2021-11-13 12:29:24
所以我正在开发这个游戏，它是一个平台，所以我现在正在做动作，问题是：
我可以移动球员到左边和右边，我也可以跳跃，但是我不能同时移动和跳跃，就像，当我向前移动时，我想要能够向前跳跃，这需要我按下前进和向上按钮。我已经尝试了很多方法来获取它，但都没有成功，我还没有发现这个问题在谷歌上到处搜索，所以...以下是帮助解决问题的最小代码。问题是玩家要么跳跃，要么移动，当我按下向上键和前进键时，它不会同时做这两件事。
Main.py
from kivy.core.window import Window
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.floatlayout import MDFloatLayout
from kivy.properties import Clock
from Player import PlayerImage
class LevelOneLayout(MDFloatLayout):
pass
class LevelOne(MDScreen):
from PlayerAction import _keyboard_closed, _on_keyboard_down, _on_keyboard_up
gravity_force = 1800
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._keyboard = Window.request_keyboard(self._keyboard_closed, self)
self._keyboard.bind(on_key_down = self._on_keyboard_down)
self._keyboard.bind(on_key_up = self._on_keyboard_up)
Clock.schedule_once(self.setup, 1/60)
def setup(self, dt):
self.player_image = PlayerImage()
self.add_widget(self.player_image)
Clock.schedule_interval(self.game_gravity, 1/30)
def game_gravity(self, dt):
if self.player_image.on_air:
self.player_image.player_gravity_vel -= self.gravity_force * 1/30
self.player_image.y += self.player_image.player_gravity_vel * 1/30
if self.player_image.y <= 60:
self.player_image.y = 60
self.player_image.player_gravity_vel = 0
self.player_image.on_air = False
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Red"
return
MainApp().run()Main.kv
LevelOne:
LevelOneLayout:
<LevelOneLayout>:
<PlayerImage>:
source: "player_77x100.png"
size_hint: None, None
size: "77dp", "100dp"
x: "0dp"
y: "50dp"Player.py
from kivy.uix.image import Image
from kivy.animation import Animation
from kivymd.uix.floatlayout import MDFloatLayout
class PlayerImage(Image):
texture_side = "right"
def __init__(self):
super().__init__()
self.velx = 20
self.player_gravity_vel = 0
self.on_air = False
def move_left(self, state, *args):
if state:
self.x -= self.velx
self.texture_left()
self.forced_dash = False
else:
return None
def move_right(self, state, *args):
if state:
self.x += self.velx
self.texture_right()
self.forced_dash = False
else:
return None
def jump(self, state, *args):
if not self.on_air and state:
self.player_gravity_vel = 830
self.on_air = True
else:
return None
def texture_left(self):
if self.texture.tex_coords[0] == 0:
self.texture.flip_horizontal()
self.texture.ask_update(self.update_texture)
self.texture_side = "left"
def texture_right(self):
if self.texture.tex_coords[0] == 1:
self.texture.flip_horizontal()
self.texture.ask_update(self.update_texture)
self.texture_side = "right"
def update_texture(self, texture):
self.texture = None
self.texture = texturePlayerAction.py
key_state = True
def _keyboard_closed(self):
self._keyboard.unbind(on_key_down = self._on_keyboard_down)
self._keyboard = None
def _on_keyboard_down(self, keyboard, keycode, *args):
if keycode[1] == "up":
self.player_image.jump(key_state)
if keycode[1] == "left":
self.player_image.move_left(key_state)
elif keycode[1] == "right":
self.player_image.move_right(key_state)
return True
def _on_keyboard_up(self, keyboard, keycode, *args):
key_state = False
if keycode[1] == "up":
self.player_image.jump(key_state)
if keycode[1] == "left":
self.player_image.move_left(key_state)
elif keycode[1] == "right":
self.player_image.move_right(key_state)
return True
回答 1
Stack Overflow用户
发布于 2021-11-13 22:09:43
所以对于一个管理多个按键的例子，我推荐这个链接：https://groups.google.com/g/kivy-users/c/b0Qmv160GBk
这就是我在kivy group support中提出的这个问题的答案，所以我对代码做了一些修改以适合我的代码，并且通过Mr.inclements帮助我做到了这一点:我将更改放在块引号中。
Main.py文件：
from kivy.core.window import Window
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.floatlayout import MDFloatLayout
from kivy.properties import Clock
from Player import PlayerImage
class LevelOneLayout(MDFloatLayout):
pass
class LevelOne(MDScreen):
from PlayerAction import _keyboard_closed, _on_keyboard_down, _on_keyboard_up, """process_keys"""
gravity_force = 1800
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._keyboard = Window.request_keyboard(self._keyboard_closed, self)
self._keyboard.bind(on_key_down = self._on_keyboard_down)
self._keyboard.bind(on_key_up = self._on_keyboard_up)
Clock.schedule_once(self.setup, 1/60)
def setup(self, dt):
self.player_image = PlayerImage()
self.add_widget(self.player_image)
Clock.schedule_interval(self.game_gravity, 1/30)
"""Clock.schedule_interval(self.process_keys, 1/30)"""
def game_gravity(self, dt):
if self.player_image.on_air:
self.player_image.player_gravity_vel -= self.gravity_force * 1/30
self.player_image.y += self.player_image.player_gravity_vel * 1/30
if self.player_image.y <= 60:
self.player_image.y = 60
self.player_image.player_gravity_vel = 0
self.player_image.on_air = False
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Red"
return
MainApp().run()PlayerAction.py文件：
"""pressed_keys = set()"""
def _keyboard_closed(self):
self._keyboard.unbind(on_key_down = self._on_keyboard_down)
"""self._keyboard.unbind(on_key_up = self._on_keyboard_up)"""
self._keyboard = None
def _on_keyboard_down(self, keyboard, keycode, *args):
"""pressed_keys.add(keycode[1])"""
return True
def _on_keyboard_up(self, keyboard, keycode, *args):
"""pressed_keys.remove(keycode[1])"""
return True
"""
def process_keys(self, dt):
if pressed_keys.issuperset({'up', 'right'}):
self.player_image.jump()
self.player_image.move_right()
elif pressed_keys.issuperset({'up', 'left'}):
self.player_image.jump()
self.player_image.move_left()
elif pressed_keys.issuperset({'left', 'up'}):
self.player_image.move_left()
self.player_image.up()
elif pressed_keys.issuperset({'right', 'up'}):
self.player_image.move_right()
self.player_image.up()
elif pressed_keys.issuperset({'up'}):
self.player_image.jump()
elif pressed_keys.issuperset({'left'}):
self.player_image.move_left()
elif pressed_keys.issuperset({'right'}):
self.player_image.move_right()
"""Player.py文件：
在player.py文件中，我只删除了"jump“、"move_left”和"move_right“方法中的"state”参数，因为我已经删除了PlayerAction.py文件中的"key_state“变量，所以这里不需要"state”参数。
注意，kivy支持组中提供的多个按键示例并不使用时钟来调用"process_key“方法，而只是从"_on_keyboard_down”方法调用，但是这样做仍然会让您感觉第二个键覆盖了第一个键，所以我尝试使用这里的Mr.inclement先生的答案，通过使用时钟调用"process_key“方法，它是有效的。就是这样。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/69954244
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