def shoot(self):
     for i in range(4):
         bullet = Bullet(IMG_PATH_BULLET, self.getRect().centerx,
                                  self.getRect().centery, 1)
         bullet.x -= bullet.w/2
         bullet.y -= bullet.h/2
         self.bullets.append(bullet)
         for bullet in self.bullets:
             if self.bullets.index(bullet) == 0:
                 bullet.speedX = 0
                 bullet.speedY = -self.speed
             elif self.bullets.index(bullet) == 1:
                 bullet.speedX = self.speed
                 bullet.speedY = 0
             elif self.bullets.index(bullet) == 2:
                 bullet.speedX = 0
                 bullet.speedY = self.speed
             else:
                 bullet.speedX = -self.speed
                 bullet.speedY = 0