// calculate origin for screen as an index into the level
int CalcScreenIndex()
{
var flick = _gamedef.GetSetting(OptionSetting.flickscreen, (Pair <int, int>)null);
var zoom = _gamedef.GetSetting(OptionSetting.zoomscreen, (Pair <int, int>)null);
if ((flick == null && zoom == null) || !PlayerIndexes.Any())
{
return(0);
}
var pindex = PlayerIndexes[0];
var width = _level.Width;
var height = _level.Height;
if (flick != null)
{
var x = flick.Item1 * (pindex % width / flick.Item1);
var y = flick.Item2 * (pindex / width / flick.Item2);
return(width * y + x);
}
else
{
var x = Math.Max(0, Math.Min(width - zoom.Item1, pindex % width - zoom.Item1 / 2));
var y = Math.Max(0, Math.Min(height - zoom.Item2, pindex / width - zoom.Item2 / 2));
return(width * y + x);
}
}
