main.py

import pygame
import sys

class runner():
    pass

class Game():
    corredores= []
    
    def __init__(self):
        
        self.__screen= pygame.display.set_mode((640,480))
        pygame.display.set_caption("carrera de bichos")
        self.background =  pygame.image.load("images/background.png")
        
        self.runner =pygame.image.load("imagenes/octopus.png")
        
        
    def competir(self):
        
        x=0
        hayGanador=False
        
        while True:
            #comprobacion de los eventos
            for event in pygame.event.get():
                if event.type== pygame.QUIT:
                    pygame.quit()
                    sys.exit()
                    
            #refrescar pantalla       
            self.__screen.blit(self.background, (0,0))
            self.__screen.blit (self.runner, (x,240))
            pygame.display.flip()
            
            x +=3
            if x >= 250:
                hayGanador =True
                
        pygame.quit()
        sys.exit()
            
        
if __name__== "__main__":
    pygame.init()
    game= Game()
    game.competir()