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import pygame.font
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import pygame
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class Button():
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def __init__(self, ai_settings, screen, msg):
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"""初始化按钮的属性"""
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pygame.init()
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self.screen = screen
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self.screen_rect = screen.get_rect()
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# 设置按钮的尺寸和其它属性
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self.width = 200
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self.height = 50
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self.button_color = (0, 255, 50)
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self.text_color = (255, 255, 255)
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self.font = pygame.font.SysFont(None, 48)
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# 创建按钮的rect对象，并使其居中
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self.rect = pygame.Rect(0, 0, self.width, self.height)
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self.rect.center = self.screen_rect.center
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# 按钮的标签只需创建一次
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self.prep_msg(msg)
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def prep_msg(self, msg):
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"""将msg渲染成图像， 并将其在按钮上居中"""
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self.msg_image = self.font.render(msg, True, self.text_color, self.button_color)
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self.msg_image_rect = self.msg_image.get_rect()
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self.msg_image_rect.center = self.rect.center
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def draw_button(self):
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# 绘制一个用颜色填充的按钮，再绘制文本
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self.screen.fill(self.button_color, self.rect)
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self.screen.blit(self.msg_image, self.msg_image_rect)
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