private void FixedUpdate()
{
if (Input.touchCount > 0)
{
var touch = Input.GetTouch(0);
switch (touch.phase)
{
case TouchPhase.Began:
startPoint = camera.ScreenToWorldPoint(touch.position);
break;
case TouchPhase.Ended:
endPoint = camera.ScreenToWorldPoint(touch.position);
if (Vector2.Distance(startPoint, endPoint) > distance)
{
// If swipe was directed from right to left
if (Vector2.Dot(Vector2.left, endPoint - startPoint) > 0)
{
DifficultyManager.Increase();
}
// If swipe was directed from left to right
else if (Vector2.Dot(endPoint - startPoint, Vector2.right) > 0)
{
DifficultyManager.Decrease();
}
}
startPoint = Vector2.zero;
endPoint = Vector2.zero;
break;
case TouchPhase.Canceled:
startPoint = Vector2.zero;
endPoint = Vector2.zero;
break;
}
}
}