button.py

import pygame.font

class Button():

	def __init__(self,ai_settings,screen,msg):
		#按钮初始化
		self.screen = screen
		self.screen_rect = screen.get_rect()

		#设置按钮属性
		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)

		#创建按钮 rect 
		self.rect = pygame.Rect(0,0,self.width,self.height)
		self.rect.center = self.screen_rect.center


		self.prep_msg(msg)




	def prep_msg(self,msg):
		#渲染msg为图像,并居中
		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):
		#打印
		self.screen.fill(self.button_color,self.rect)
		self.screen.blit(self.msg_image,self.msg_image_rect)