'Transitions box into BUMPED state'

def start_bump(self, score_group):

    self.y_vel = (-6)
    self.state = c.BUMPED
    if (self.contents == 'coin'):
        self.group.add(coin.Coin(self.rect.centerx, self.rect.y, score_group))
        setup.SFX['coin'].play()
    else:
        setup.SFX['powerup_appears'].play()
