if (target_count == 0)
    exit;
var _size_average = 0;
var _size = [];
var _pos = [];
var _depth = [];
var _sprite_point = new Vector2();
var _sprite_size = new Vector2();
_size[0] = new Vector2(0, 0);
_pos[0] = new Vector2(0, 0);
_size[1] = new Vector2(0, 0);
_pos[1] = new Vector2(0, 0);
_depth[0] = 0;
_depth[1] = 0;
for (var i = 0; i < target_count; i++)
{
    _sprite_point.x = 0;
    _sprite_point.y = 0;
    if (!i_ex(targets[i]))
    {
        array_delete(targets, i, 1);
        array_delete(target_offset, i, 1);
        array_delete(target_size, i, 1);
        i--;
        target_count--;
        continue;
    }
    else
    {
        with (targets[i])
        {
            if (other.auto_update || other.update)
            {
                other.target_offset[i] = scr_getspritepoint_relative(id, 0.5, 1);
                other.target_size[i] = new Vector2(sprite_width, sprite_height);
            }
            _sprite_point.x = x + other.target_offset[i].x;
            _sprite_point.y = y + other.target_offset[i].y;
            _sprite_size = other.target_size[i];
            if (other.average || other.target_count <= 2)
            {
                _size[0].x += _sprite_size.x;
                _size[0].y += _sprite_size.y;
                _pos[0].add(_sprite_point);
                _depth[0] += depth;
            }
            else if (i == 0)
            {
                _size[0].x = _sprite_size.x;
                _size[0].y = _sprite_size.y;
                _size[1].x = _sprite_size.x;
                _size[1].y = _sprite_size.y;
                _pos[0].add(_sprite_point);
                _pos[1].add(_sprite_point);
                _depth[0] = depth;
                _depth[1] = depth;
            }
            else
            {
                _size[0].x = min(_size[0].x, _sprite_size.x);
                _size[1].x = max(_size[1].x, _sprite_size.x);
                _size[0].y = min(_size[0].y, _sprite_size.y);
                _size[1].y = max(_size[1].y, _sprite_size.y);
                _pos[0].x = min(_pos[0].x, _sprite_point.x);
                _pos[1].x = max(_pos[1].x, _sprite_point.x);
                _pos[0].y = min(_pos[0].y, _sprite_point.y);
                _pos[1].y = max(_pos[1].y, _sprite_point.y);
                _depth[0] = min(_depth[0], depth);
                _depth[1] = max(_depth[1], depth);
            }
        }
    }
}
update = false;
if (target_count == 0)
    exit;
if (average || target_count <= 2)
{
    x = _pos[0].x / target_count;
    y = _pos[0].y / target_count;
    depth = _depth[0] / target_count;
    image_xscale = _size[0].x / target_count / 10;
    image_yscale = _size[0].y / target_count / 10;
}
else
{
    x = (_pos[0].x + _pos[1].x) / 2;
    y = (_pos[0].y + _pos[1].y) / 2;
    depth = (_depth[0] + _depth[1]) / 2;
    image_xscale = (_size[0].x + _size[1].x) / 20;
    image_yscale = (_size[0].y + _size[1].y) / 20;
}