override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { //выстрел с нашей стороны
    guard touches.first != nil else  {
        return
    }

    let myShot = SKSpriteNode()
    let myShotAnimation = SKAction.repeatActionForever(SKAction.animateWithTextures(myShotTexture, timePerFrame: 0.01))
    myShot.size = CGSizeMake(200, 200)
    myShot.anchorPoint = CGPoint(x: 0.5, y: 0.5)
    myShot.zPosition = 0
    sprite!.addChild(myShot)
    let myShotAction = SKAction.group([SKAction.scaleBy(0.1, duration: 0.5), myShotAnimation])
    let actionRemove = SKAction.removeFromParent()
    myShot.runAction (SKAction.sequence([myShotAction, actionRemove]))

}