@IBAction func Destroy () {
    for Object in nodesInVicinity(point: bomb.position, tolerance: 80) {
    object.removeFromParent()
    }
}


    extension SKNode {
    private func squareDistanceTo(point: CGPoint) -> CGFloat {
        let dx = point.x - position.x
        let dy = point.y - position.y

        return (dx * dx + dy * dy)
    }

    func nodesInVicinity(point: CGPoint, tolerance: CGFloat) -> [SKNode] {
        let squareTolerance = tolerance * tolerance


        return children.filter() {
            $0.squareDistanceTo(point: point) <= squareTolerance
        }
    }
}