Function GenRandomRoadBits

src/town_cmd.cpp:1883–1890

* Generate a random road block. * The probability of a straight road * is somewhat higher than a curved. * * @return A RoadBits value with 2 bits set */

 * @return A RoadBits value with 2 bits set
 */
static RoadBits GenRandomRoadBits()
{
	uint32_t r = Random();
	uint a = GB(r, 0, 2);
	uint b = GB(r, 8, 2);
	if (a == b) b ^= 2;
	return (RoadBits)((ROAD_NW << a) + (ROAD_NW << b));
}

/**
 * Grow the town.