public Vector2 Update(Vector2 touchPosition, float deltaTime)
{
var delta = Vector2.zero;
switch (State)
{
case ScrollerState.Idle:
break;
case ScrollerState.Scrolling:
delta = touchPosition - _lastTouchPosition;
RecordSpeed(delta / deltaTime);
_lastTouchPosition = touchPosition;
break;
case ScrollerState.Decelerating:
delta = GetDeceleratingSpeed(deltaTime) * deltaTime;
_speed = delta / deltaTime;
if (Mathf.Approximately(_speed.sqrMagnitude, 0f))
{
State = ScrollerState.Idle;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
return(delta);
}
public void DoTouch(Vector2 touchPosition)
{
_touchSpeedQueue.Clear();
State = ScrollerState.Scrolling;
_speed = Vector2.zero;
_lastTouchPosition = touchPosition;
}
public void ZeroSpeed()
{
_speed = Vector2.zero;
State = ScrollerState.Idle;
}
public void DoUntouch()
{
State = ScrollerState.Decelerating;
_speed = GetReleaseSpeed();
_speed = Vector2.ClampMagnitude(_speed, _maxReleaseSpeed);
}
public void StopScroller()
{
currentScrollerState = ScrollerState.Stopped;
}
public void StartScroller()
{
currentScrollerState = ScrollerState.Moving;
}
