Hi Everyone!
I had trouble finding good information how to get out swipes in different directions, so I fixed one to share to the community!
Feel free to tweak the “0.5f” number to get the right feel for how narrow you want to detect the swipe.
This is for ONE touch, you can add several touches by using a foreach and loop through the Input.touches.
Code is in C#.
Touch:
//inside class
Vector2 firstPressPos;
Vector2 secondPressPos;
Vector2 currentSwipe;
public void Swipe()
{
if(Input.touches.Length > 0)
{
Touch t = Input.GetTouch(0);
if(t.phase == TouchPhase.Began)
{
//save began touch 2d point
firstPressPos = new Vector2(t.position.x,t.position.y);
}
if(t.phase == TouchPhase.Ended)
{
//save ended touch 2d point
secondPressPos = new Vector2(t.position.x,t.position.y);
//create vector from the two points
currentSwipe = new Vector3(secondPressPos.x - firstPressPos.x, secondPressPos.y - firstPressPos.y);
//normalize the 2d vector
currentSwipe.Normalize();
//swipe upwards
if(currentSwipe.y > 0 currentSwipe.x > -0.5f currentSwipe.x < 0.5f)
{
Debug.Log("up swipe");
}
//swipe down
if(currentSwipe.y < 0 currentSwipe.x > -0.5f currentSwipe.x < 0.5f)
{
Debug.Log("down swipe");
}
//swipe left
if(currentSwipe.x < 0 currentSwipe.y > -0.5f currentSwipe.y < 0.5f)
{
Debug.Log("left swipe");
}
//swipe right
if(currentSwipe.x > 0 currentSwipe.y > -0.5f currentSwipe.y < 0.5f)
{
Debug.Log("right swipe");
}
}
}
}
For Mouse left click (0):
//inside class
Vector2 firstPressPos;
Vector2 secondPressPos;
Vector2 currentSwipe;
public void Swipe()
{
if(Input.GetMouseButtonDown(0))
{
//save began touch 2d point
firstPressPos = new Vector2(Input.mousePosition.x,Input.mousePosition.y);
}
if(Input.GetMouseButtonUp(0))
{
//save ended touch 2d point
secondPressPos = new Vector2(Input.mousePosition.x,Input.mousePosition.y);
//create vector from the two points
currentSwipe = new Vector2(secondPressPos.x - firstPressPos.x, secondPressPos.y - firstPressPos.y);
//normalize the 2d vector
currentSwipe.Normalize();
//swipe upwards
if(currentSwipe.y > 0 currentSwipe.x > -0.5f currentSwipe.x < 0.5f)
{
Debug.Log("up swipe");
}
//swipe down
if(currentSwipe.y < 0 currentSwipe.x > -0.5f currentSwipe.x < 0.5f)
{
Debug.Log("down swipe");
}
//swipe left
if(currentSwipe.x < 0 currentSwipe.y > -0.5f currentSwipe.y < 0.5f)
{
Debug.Log("left swipe");
}
//swipe right
if(currentSwipe.x > 0 currentSwipe.y > -0.5f currentSwipe.y < 0.5f)
{
Debug.Log("right swipe");
}
}
}
Cheers!
