【发布时间】：2021-11-13 12:29:24
【问题描述】：
所以我正在开发这个游戏，它是一个平台游戏，所以我现在正在研究动作，问题是：
我可以将玩家左右移动，我也可以跳跃，但是我不能同时移动和跳跃，例如，当我向前移动时，我希望能够向前跳跃，那会要求我按前进和向上按钮。 我已经尝试了很多方法来解决这个问题，但没有成功，我还没有发现这个问题在谷歌上搜索，所以......这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，当我按下向上和前进键时它不会同时进行。
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"
播放器.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 = texture
PlayerAction.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
【问题讨论】：
-
看起来您的代码依赖于这样一个事实，即当您按住某个键时，您会反复从该键获取新的按键事件。但是，当您按住一个键然后按另一个键时，第二个键会覆盖该键。相反，您不应该依赖它并在程序中处理按键向上/向下状态：在keyboard_down 事件存储某处的“左键按下”状态，并在keyboard_up 事件中清除该状态。然后 Clock.schedule_interval 一个函数“update_character”，如果左键向下，则向左移动，如果右键向下则向右移动，如果跳转键向下，则跳转等。
-
感谢您的帮助 Mr.inclement，我在 kivy 小组支持中提出了这个问题，在 Mr.ElliotG 的帮助下，您的一切正常，我会在这里发布我的解决方案以防其他人偶然发现这个问题，再次感谢您的帮助。
标签： python python-3.x kivy kivy-language kivymd