detect Swipe in four directions (android)

[alone1992]

Hello
I need to java script code that can detect four directions (up, down , right , left) swipe on screen and debug once when that is happen.
I write some codes with delta position but never couldn’t have result.
thanks

[MrVerdoux]

Why don´t you check

float deltaX = deltaPosition.x;
float deltaY = deltaPosition.y;
float biggerDelta = (deltaX > deltaY) ? deltaX : deltaY;
int direction = Mathf.Sign (biggerDelta);

With that info you should be able to get it. At least that´s how I do it.

Edit: new script, same idea, it might need some tweak but I don´t see why it shoudn´t work.

using System.Collections;

public class MiniGestureRecognizer : MonoBehaviour {

	public enum SwipeDirection{
		Up,
		Down,
		Right,
		Left
	}

	public static event Action<SwipeDirection> Swipe;
	private bool swiping = false;
	private bool eventSent = false;
	private Vector2 lastPosition;
	
	void Update () {
		if (Input.touchCount == 0) 
			return;

		if (Input.GetTouch(0).deltaPosition.sqrMagnitude != 0){
			if (swiping == false){
				swiping = true;
				lastPosition = Input.GetTouch(0).position;
				return;
			}
			else{
				if (!eventSent) {
					if (Swipe != null) {
						Vector2 direction = Input.GetTouch(0).position - lastPosition;

						if (Mathf.Abs(direction.x) > Mathf.Abs(direction.y)){
							if (direction.x > 0) 
								Swipe(SwipeDirection.Right);
							else
								Swipe(SwipeDirection.Left);
						}
						else{
							if (direction.y > 0)
								Swipe(SwipeDirection.Up);
							else
								Swipe(SwipeDirection.Down);
						}

						eventSent = true;
					}
				}
			}
		}
		else{
			swiping = false;
			eventSent = false;
		}
	}
}

I am sorry about the amount of ifs, I did this quite fast…

[pfonseca]

This works to me: http://pfonseca.com/swipe-detection-on-unity/

[Nomibuilder]

using UnityEngine;
using System.Collections;

public class SwipeDetector : MonoBehaviour 
{
	
	public float minSwipeDistY;

	public float minSwipeDistX;
		
	private Vector2 startPos;

	void Update()
	{
//#if UNITY_ANDROID
		if (Input.touchCount > 0) 
			
		{
			
			Touch touch = Input.touches[0];
			
			
			
			switch (touch.phase) 
				
			{
				
			case TouchPhase.Began:

				startPos = touch.position;
				
				break;
				
				
				
			case TouchPhase.Ended:

					float swipeDistVertical = (new Vector3(0, touch.position.y, 0) - new Vector3(0, startPos.y, 0)).magnitude;

					if (swipeDistVertical > minSwipeDistY) 
						
					{
						
						float swipeValue = Mathf.Sign(touch.position.y - startPos.y);
						
						if (swipeValue > 0)//up swipe

							//Jump ();
						
						else if (swipeValue < 0)//down swipe

							//Shrink ();
						
					}
					
					float swipeDistHorizontal = (new Vector3(touch.position.x,0, 0) - new Vector3(startPos.x, 0, 0)).magnitude;
					
					if (swipeDistHorizontal > minSwipeDistX) 
						
					{
						
						float swipeValue = Mathf.Sign(touch.position.x - startPos.x);
						
						if (swipeValue > 0)//right swipe
							
							//MoveRight ();
						
						else if (swipeValue < 0)//left swipe
							
							//MoveLeft ();
						
					}
				break;
			}
		}
	}
}

[Max_power1965]

Hu guys, I wrote this simple tutorial wich is basically 7 lines of code and works like a charm. Easy and simple. You just have to use te build in Unity event system instead to write long and useless code.
No need to use update or fixed update.

[tvranjith]

I found this post RTV Studios: Detecting swipe from Unity3D c# scripts

It detects swipe in four direction and we can also control the swipe speed and angle for the swipe in four direction.

[MOSTY]

Very cheap solution for beginners and experts who don’t want to spend much time in coding swipe & touch controls.
NOW with Playmaker support.

Unity Asset Store - The Best Assets for Game Making

(Easy Swipe & Touch Controller)

[Overnaut]

Use the SwipeManager from the Unity forum:

https://forum.unity.com/threads/swipe-in-all-directions-touch-and-mouse.165416/page-2#post-2741253