Make a ball bounce when pressed - swift

Question

I am trying to make a game where you can click a ball using SpriteKit. At the moment, I can click anywhere on the screen and the ball moves up.
I want it to only move or bounce when I click the ball. What am I doing wrong?
import SpriteKit
import GameplayKit
class GameScene: SKScene {
var ball = SKSpriteNode()
var grass = SKSpriteNode()
override func didMove(to view: SKView) {
ball = (self.childNode(withName: "ball") as? SKSpriteNode)!
let border = SKPhysicsBody(edgeLoopFrom: self.frame)
border.friction = 0
border.restitution = 1
self.physicsBody = border
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchDown(atPoint: t.location(in: self)) }
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { self.touchUp(atPoint: t.location(in: self)) }
}
func touchDown(atPoint pos: CGPoint) {
jump()
}
func touchUp(atPoint pos: CGPoint) {
ball.texture = SKTexture(imageNamed: "football-161132_640")
}
func jump() {
ball.texture = SKTexture(imageNamed: "football-161132_640")
ball.physicsBody?.applyImpulse(CGVector(dx: Int.random(in: -5...5), dy: 80))
}
}

Answer 1

Multiple touches:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
if ball.contains(location) {
jump()
}
}
}
Single touch:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let location = touch.location(in: self)
if ball.contains(location) {
jump()
}
}
}