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import pygame . font
class Button ( ) :
def __init__ ( self , ai_settings , screen , msg ) :
""" 初始化按钮属性 """
self . screen = screen
self . screen_rect = screen . get_rect ( )
# 设置按钮的尺寸和属性
self . width , self . height = 200 , 50
self . button_color = ( 0 , 255 , 0 )
self . text_color = ( 255 , 255 , 255 )
self . font = pygame . font . SysFont ( None , 48 )
# 构建按钮的rect对象，
self . rect = pygame . Rect ( 0 , 0 , self . width , self . height )
self . rect . center = self . screen_rect . center
# 按钮消息只需要准备一次
self . prep_msg ( msg )
def prep_msg ( self , msg ) :
""" 将msg转换为渲染图像， """
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 ) :
# 绘制空白按钮，然后绘制消息
self . screen . fill ( self . button_color , self . rect )
self . screen . blit ( self . msg_image , self . msg_image_rect )
