public static List <Necrosofty.Input.TouchData> filter(List <Necrosofty.Input.TouchData> touches)
{
// if no existing touch, grab the first available
if (output_touch_id == -1)
{
if (touches.Count > 0)
{
output_touch = touches[0];
output_touch.Status = TouchStatus.Down;
output_touch_id = touches[0].ID;
}
}
else // update the existing touch
{
bool found = false;
for (int i = 0; i < touches.Count; ++i)
{
if (touches[i].ID == output_touch_id)
{
output_touch = touches[i];
found = true;
}
}
// didn't find it in the list! let's release the current touch
if (!found)
{
output_touch.Status = TouchStatus.Up;
}
}
if (output_touch == null)
{
return(new List <Necrosofty.Input.TouchData>());
}
// if touch released, clear the current touch id
if (output_touch.Status == TouchStatus.Up)
{
output_touch_id = -1;
}
// build the new touch "list"
List <Necrosofty.Input.TouchData> output_touches = new List <Necrosofty.Input.TouchData>();
if (output_touch_id != -1)
{
output_touches.Add(output_touch);
}
return(output_touches);
}
public static void tick(List <Necrosofty.Input.TouchData> touches_in)
{
// flag to make sure we update all touches
for (int i = 0; i < touches.Count; ++i)
{
Touch touch = touches[i];
touch.updated = false;
touches[i] = touch;
}
int touch_count = touches_in.Count;
// for touches coming in
for (int i = 0; i < touch_count; ++i)
{
Necrosofty.Input.TouchData touch_in = touches_in[i];
bool handled = false;
// if a touch with a matching id already exists, update it
for (int j = 0; j < touches.Count; ++j)
{
Touch touch = touches[j];
if (touch_in.ID == touch.id)
{
handled = true;
touch.last_position = touch.position;
touch.position = new Vector2(AppMain.vscreen.x - (touch_in.X + 0.5f) * AppMain.vscreen.x,
(touch_in.Y + 0.5f) * 544);
touch.updated = true;
touch.status = Touch.Status.MOVE;
}
touches[j] = touch;
}
// if not, add it
if (!handled)
{
Touch new_touch = new Touch();
new_touch.id = touch_in.ID;
new_touch.position = new Vector2(AppMain.vscreen.x - (touch_in.X + 0.5f) * AppMain.vscreen.x,
(touch_in.Y + 0.5f) * 544);
new_touch.last_position = new_touch.position;
new_touch.initial_position = new_touch.position;
new_touch.really_initial_position = new_touch.position;
new_touch.updated = true;
new_touch.status = Touch.Status.DOWN;
touches.Add(new_touch);
}
}
// find unhandled touches and process them
for (int i = 0; i < touches.Count; ++i)
{
Touch touch = touches[i];
if (touch.updated)
{
continue;
}
if (touch.status != Touch.Status.UP)
{
touch.status = Touch.Status.UP;
touches[i] = touch;
continue;
}
touches.RemoveAt(i);
i--;
}
}
