button.py

import pygame.font

class Button:
    """为游戏创建按钮"""

    def __init__(self, game, msg):
        """初始化按钮的属性"""
        self.screen = game.screen
        self.screen_rect = game.screen.get_rect()

        # 设置按钮的尺寸和其他属性
        self.width = 200
        self.height = 50
        self.button_color = (0, 135 ,0)
        self.text_color = (255, 255, 255)
        self.font =  pygame.font.SysFont(None, 50)

        # 创建按钮的rect对象，并使其居中
        self.rect = pygame.Rect(0,0,self.width,self.height)
        self.rect.center = self.screen_rect.center
        
        # 按钮的标签只需创建一次
        self._prep_msg(msg)

    def _prep_msg(self, msg):
        """将msg渲染为图像"""
        self.msg_image = self.font.render(msg, True, self.text_color, self.button_color)
        self.msg_image_rect = self.msg_image.get_rect()
        self.msg_image_rect.center = self.rect.center

    def draw_button(self):
        """绘制按钮与文本"""
        self.screen.fill(self.button_color, self.rect)
        self.screen.blit(self.msg_image, self.msg_image_rect)