python类USEREVENT的实例源码

def run(self):
        key_actions = {
            'ESCAPE':   self.quit,
            'LEFT':     lambda:self.move(-1),
            'RIGHT':    lambda:self.move(+1),
            'DOWN':     lambda:self.drop(True),
            'UP':       self.rotate_stone,
            'p':        self.toggle_pause,
            'SPACE':    self.start_game,
            'RETURN':   self.insta_drop
        }

        self.gameover = False
        self.paused = False

        dont_burn_my_cpu = pygame.time.Clock()
        while 1:
            self.screen.fill((0,0,0))
            if self.gameover:
                self.center_msg("""Game Over!\nYour score: %d
Press space to continue""" % self.score)
            else:
                if self.paused:
                    self.center_msg("Paused")
                else:
                    pygame.draw.line(self.screen,
                        (255,255,255),
                        (self.rlim+1, 0),
                        (self.rlim+1, self.height-1))
                    self.disp_msg("Next:", (
                        self.rlim+cell_size,
                        2))
                    self.disp_msg("Score: %d\n\nLevel: %d\
\nLines: %d" % (self.score, self.level, self.lines),
                        (self.rlim+cell_size, cell_size*5))
                    self.draw_matrix(self.bground_grid, (0,0))
                    self.draw_matrix(self.board, (0,0))
                    self.draw_matrix(self.stone,
                        (self.stone_x, self.stone_y))
                    self.draw_matrix(self.next_stone,
                        (cols+1,2))
            pygame.display.update()
            i = 0
            for event in pygame.event.get():
                i += 1
                if event.type == pygame.USEREVENT+1:
                    self.drop(False)
                elif event.type == pygame.QUIT:
                    self.quit()
                elif event.type == pygame.KEYDOWN:
                    for key in key_actions:
                        if event.key == eval("pygame.K_"
                        +key):
                            print "time elapsed in seconds since last epoch: ",time()
                            print "action taken: ",key
                            key_actions[key]()

            dont_burn_my_cpu.tick(maxfps)