def play(file):
	file = os.path.join(stimpath,file);
	sound=mixer.Sound(file)
	channel=sound.play()
	while channel.get_busy():
		time.wait(10)

def display(text):
    t = font.render(text, 1, (10, 10, 10))
    textpos = t.get_rect()
    textpos.centerx = background.get_rect().centerx
    textpos.centery = background.get_rect().centery
    background.blit(t, textpos)
    screen.blit(background, (0, 0))
    pygame.display.flip()

    
def clear_display():
    background.fill((250, 250, 250))
    screen.blit(background, (0, 0))
    pygame.display.flip()

def save(stim,resp):
    print stim,resp