• pygame


    import pygame
    from pygame.locals import (K_SPACE, KEYDOWN, QUIT)
    
    
    class Obj:
        def __init__(self):
            self.x = 400
            self.y = 300
            self.dir = 0
            
        def update(self):   # 更新位置
            if self.dir == 0:
                self.up()
            elif self.dir == 1:
                self.right()
            elif self.dir == 2:
                self.down()
            else:
                self.left()
                
        def up(self):       # 上
            self.y -= 1
            if self.y <= 10:
                self.dir = 1
    
        def right(self):    # 右
            self.x += 1
            if self.x >= 790:
                self.dir = 2
    
        def down(self):     # 下
            self.y += 1
            if self.y >= 590:
                self.dir = 3
    
        def left(self):     # 左
            self.x -= 1
            if self.x <= 10:
                self.dir = 0
    
    
    class App:
        def __init__(self, WIDTH, HEIGHT,TEXT_HEIGHT):
            pygame.init()
            self.WIDTH = WIDTH
            self.HEIGHT = HEIGHT
            self.TEXT_HEIGHT = TEXT_HEIGHT
            self.screen = pygame.display.set_mode((WIDTH, HEIGHT+TEXT_HEIGHT))
            self.WHITE = (255, 255, 255)
            self.BLACK = (0, 0, 0)
            self.BLUE = (0, 0, 200)
    
        def pause(self):    # 暂停
            self.showtext("press space to play")
            pygame.display.flip()
            
            while True:
                for event in pygame.event.get():
                    if event.type == KEYDOWN:
                        if event.key == K_SPACE:    # 按空格恢复
                            return True
                    elif event.type == pygame.QUIT: # 退出
                        return False
    
        def init(self): # 初始场景
            self.screen.fill(self.WHITE)
    
        def showtext(self,text):    # 显示提示文字
            bar = pygame.Surface((self.WIDTH, self.TEXT_HEIGHT))  # 字的背景条的大小
            bar.fill(self.BLUE)   # 颜色
            rect = bar.get_rect()
            self.screen.blit(bar, (0, self.HEIGHT))  # 显示位置
    
            font = pygame.font.Font('freesansbold.ttf',self.TEXT_HEIGHT)  # 字体和大小
            TextSurface = font.render(text, True, self.BLACK)    # 要显示的字和颜色
            TextRect = TextSurface.get_rect()
            TextRect.center = ((self.WIDTH/2),(self.HEIGHT+self.TEXT_HEIGHT/2)) # 显示位置
            self.screen.blit(TextSurface, TextRect) 
    
        def run(self):
            obj = Obj()
            self.init() # 初始场景
            running = self.pause()  # 刚开始先暂停
            
            while running:
                for event in pygame.event.get():
                    if event.type == KEYDOWN:
                        if event.key == K_SPACE:    # 按空格暂停
                            running = self.pause()
                    
                    elif event.type == pygame.QUIT: # 退出
                        running = False
    
                
                self.screen.fill(self.WHITE)   # 背景
                self.showtext("press space to pause")
                # --------------
                surf = pygame.Surface((50, 50))
                surf.fill((0, 0, 0))
                rect = surf.get_rect()
                self.screen.blit(surf, (obj.x, obj.y))
                # --------------
                pygame.display.flip()   # 画
                obj.update()    # 更新
    
            pygame.quit()   # 退出循环后,结束
    
    
    if __name__=='__main__':
        WIDTH = 800
        HEIGHT = 600
        TEXT_HEIGHT = 60
        App(WIDTH, HEIGHT, TEXT_HEIGHT).run()
    
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  • 原文地址:https://www.cnblogs.com/holaworld/p/12615768.html
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