I’m attempting to experiment with using Pan (Swift), but it keeps priortizing horizontal over vertical, all it takes is 1 pixel difference. I’ve also tried Swipe which is somewhat better, I also need to detect when guesture is done (touchEnded)
The idea is to send a “key” value depending on what is done
“U”,“D”,“L”,“R” for the major direction detected
and “#” when ended.
This way the app will continue to process the “direction” until is recieves the “#” (stop) command
Seems using TouchesXXXX works much better
var initialPoint: CGPoint?
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
initialPoint = touch.location(in: self.view)
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesEnded(touches, with: event)
keyCommand("#")
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first, let start = initialPoint else { return }
let current = touch.location(in: self.view)
let dx = current.x - start.x
let dy = current.y - start.y
// Threshold to avoid noise
let threshold: CGFloat = 20
if abs(dx) > abs(dy) && abs(dx) > threshold {
if dx > 0 { keyCommand("W") } else { keyCommand("E") }
initialPoint = current
} else if abs(dy) > threshold {
if dy > 0 { keyCommand("S") } else { keyCommand("N") }
initialPoint = current
}
}
func keyCommand(_ key:String) {
print("Command : \(key)") // this will execute required action
}