let me clarify,node 1 is static and node 2 is dynamic, I want to know when node 2 is completely out of node 1's boundaries.
hamimate
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Set the contactTestBitMask properties of both objects. then detect when they collide in the didBegin func and then detect when they stop colliding in the didEnd funcplayer.physicsBody?.contactTestBitMask = collisionTypes.bullet.rawValue
bullet.physicsBody?.contactTestBitMask = collisionTypes.player.rawValue
func didBegin(_ contact: SKPhysicsContact) {
//detect your collision and do what you need to do
//maybe set a bool to true if you have multiple collision types
}
func didEnd(_ contact: SKPhysicsContact) {
//check that the above collison is the one that ended
//run appropriate code for end collision
}
Well it was a combination little hacks in touchesBegan/ touchesMoved and update func,First you need to catch on which touch occurred, get it's name (in my case I made nodes which had alpha of 0, but become visible upon moving over them i.e alpha 1). In touchesBegan, touchesMoved as follow guard let touch = touches.first else {return}
let location = touch.location(in: self)
lastTouchPoint = location
let positionInScene = touch.location(in: self)
let touchedNode = self.atPoint(positionInScene)
if let name = touchedNode.name
{
if name == "vortex"
{
touching = false
self.view!.isUserInteractionEnabled = false
print("Touched on the interacted node")
}else{
self.view!.isUserInteractionEnabled = true
touching = true
}
}
}Second use a BOOL touching to track user interactions, on the screen by using getting a tap recogniser setup, as follow,
func setupTapDetection() {
let t = UITapGestureRecognizer(target: self, action: #selector(tapped(_:)))
view?.addGestureRecognizer(t)
}
@objc func tapped(_ tap: UITapGestureRecognizer) {
touching = true
}Finally in update put checks as follow,guard isGameOver == false else { return }
self.view!.isUserInteractionEnabled = true
if(touching ?? true){
if let lastTouchPosition = lastTouchPoint {
//this usually gives a large value (related to screen size of the device) so /100 to normalize it
let diff = CGPoint(x: lastTouchPosition.x - player.position.x, y: lastTouchPosition.y - player.position.y)
physicsWorld.gravity = CGVector(dx: diff.x/100, dy: diff.y/100)
}
}
}