столкновение

	var _bup = _id.bbox_top;
	var _bdown = _id.bbox_bottom;
	var _bleft = _id.bbox_left;
	var _bright = _id.bbox_right;
	// При полёте вниз
	if (_info.motion.ver_vel > 0) {
		var _new_y = round((_bdown + _info.motion.ver_vel)) div CH;
		if (mp_grid_get_cell(global.grid_settings.grid, _bleft div CW, _new_y) == -1)
		or(mp_grid_get_cell(global.grid_settings.grid, _bright div CW, _new_y) == -1) {
			_new_y *= CH;
			_new_y -= 1;

			_info.motion.ver_vel = clamp(_new_y - _bdown, 0, CH);
		}
	}