Question Touch controls: dragging finger interpreted as double tap of screen?

Using touch controls for the first time, and wow I really miss joysticks! But kids these days use phones, and I making a 2D game to entertain a friend's kid ... so ...

The problem I have is I added a "double tap the screen" to pause the game function, but when the player is dragging his/her finger around to otherwise play the game, it randomly pauses the game.

Anyone have any tips for preventing the two actions from getting confused? Here is my code ... and before you mock me understand I have not fiddled with touch controls before! Or certainly not lately.

Thanks for any assistance!

Tap twice to pause (sometimes fires when a finger is dragging the screen)

Code (CSharp):

1.  
2. private void Taps()
3.     {
4.         for (var i = 0; i < Input.touchCount; i++)
5.         {
6.             if (Input.GetTouch(i).phase == TouchPhase.Began)
7.             {
8.                 if (Input.GetTouch(i).tapCount == 2)
9.                 {
10.                     PauseToggle();
11.                 }
12.             }
13.         }
14.     }
15.  

Drag to control game (works fine until it randomly pauses the game)

Code (CSharp):

1. private void TouchMove() //touchscreen
2.     {
3.         if (Input.touchCount > 0)
4.         {
5.             touch = Input.GetTouch(0);
6.             touchPos = Camera.main.ScreenToWorldPoint(new Vector3(touch.position.x, startY + 100f, 10));
7.             transform.position = touchPos;
8.         }
9.     }

 

After nearly a decade of using Unity on touch, today I learned that there is a

Touch.tapCount

field. Wow. That's why I play in the forums.

So clearly, I never use tapCount !

For a double-tap situation like what you're doing, you kinda want to detect two releases that are close to each other in time, not so much two taps. If you think through it you will sorta see how it is generally better.

For that I always use my own timer.

- make a float timer class variable

Each frame (eg, in Update(); NEVER ask for touches in FixedUpdate!!!):

- if the timer is greater than zero, count it down by Time.deltaTime

- when a release is detected:
---> if timer greater than zero, do the pause
---> else reset the timer back to its "desired tap interval" (usually 0.6f seconds works nicely)

That's it.

 

Thanks! I had thought of that but considered it "hacky" ... but if it works, it is GENIUS!