Unresponsive Touch

Unity Engine
,
1

Hello,

The title might be overstating it, but we are developing an action game and it requires fast and precise touches. However, sometimes, mainly during fps spikes (spikes = 25-30 fps, down from the regular 60 fps), the touch is… unresponsive, some of the touches are not interpreted.

My code for touch input detection is as follows:

public class TouchHandlerGame : MonoBehaviour
{
	//public TextMesh debugText;
	
	private bool buttonClick;
	private Camera mainCamera;
	
	private bool mobile;
	
	//Variables for mouse slash
	private Vector3 initialSlashPos;
	private Vector2 initialTouchPos;
	private Vector2 initialClickCancelPos;
	
	private void Start()
	{
		mainCamera = GameObject.Find("Main Camera").GetComponent<Camera>();
		if (Application.platform == RuntimePlatform.Android || Application.platform == RuntimePlatform.IPhonePlayer)
			mobile = true;
	}
	
	private void Update()
	{
		if (mobile)
		{
	        foreach (Touch touch in Input.touches)
			{
				if (touch.fingerId == 0)
				{
					if (touch.phase == TouchPhase.Began)
					{
						buttonClick = true;
					}
					if (touch.phase == TouchPhase.Moved)
					{
						//buttonClick = false;
						Ray ray = mainCamera.ScreenPointToRay(touch.position);
						RaycastHit hit = new RaycastHit();
						if (Physics.Raycast(ray, out hit, Mathf.Infinity))
						{
							if (hit.collider.tag == "Slashable")
							{
								if (initialTouchPos == Vector2.zero)
									initialTouchPos = touch.position;
								{
									float sqrLen = (initialTouchPos - touch.position).sqrMagnitude;
									if (sqrLen > 200)
									{
										initialTouchPos = Vector2.zero;
										hit.collider.gameObject.SendMessage("OnMouseSlash", SendMessageOptions.DontRequireReceiver);
									}
								}
							}
							if (initialClickCancelPos == Vector2.zero)
								initialClickCancelPos = touch.position;
							{
								float sqrLen = (initialClickCancelPos - touch.position).sqrMagnitude;
								if (sqrLen > 200)
								{
									initialClickCancelPos = Vector2.zero;
									buttonClick = false;
								}
							}
						}
					}
					if (touch.phase == TouchPhase.Ended)
					{
						if (buttonClick)
						{
							buttonClick = false;
							Ray ray = mainCamera.ScreenPointToRay(touch.position);
							RaycastHit hit = new RaycastHit();
							if (Physics.Raycast(ray, out hit, Mathf.Infinity))
							{
								if (hit.collider.tag != "Button")
									hit.collider.gameObject.SendMessage("OnMouseClickDown", SendMessageOptions.DontRequireReceiver);
							}
						}
					}
				}
			}
		}
	}
}

The game is playable, it doesnt happen all that often, but more often the desired… am I detecting touches wrong? Does anyone else have this kind of problem?

Thank you for your attention,
Best regards,
Allan

2

Can you check on the profiler if this is the source of the lag?

Also, If you only want one touch, I would remove the foreach loop, and check if Input.touchCount is bigger than 1, and then get the first touch: Input.GetTouch(0)

Have you been able to fix the issue already?