用kivy 做个2048的小游戏,运行环境:python3.10, kivy 2.1
on_pos = resize
on_size = resize
这两行代码没看懂!怎么运行的呢?是赋值吗?后面也没有再引用啊! 如果去掉,背景就会缩小到左下角!
从网上查了半天也没找到相关的内容!请赐教!
以下是全部代码
from kivy.app import App
from kivy.core.window import Window
from kivy.graphics import BorderImage
from kivy.uix.widget import Widget
from kivy.utils import get_color_from_hex
spacing = 15
class Board(Widget):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.cell_size = None
self.resize()
def resize(self, *args):
self.cell_size = (0.25 * (self.width - 5 * spacing),) * 2
# redraw background
self.canvas.before.clear()
with self.canvas.before:
BorderImage(pos=self.pos, size=self.size, source='board.png')
on_pos = resize
on_size = resize
class GameApp(App):
def build(self):
# 通过id获取到FloatLayout布局中的Board
board = self.root.ids.board
if __name__ == '__main__':
Window.clearcolor = get_color_from_hex('faf8ef')
GameApp().run()
kv language game.kv代码如下:
FloatLayout:
Board:
id: board
pos_hint: {'center_x': 0.5, 'center_y': 0.5}
size_hint: (None, None)
center: root.center
size: [min(root.width, root.height) - 2 * padding] * 2