Function CalcBridgeLenCostFactor

src/tunnelbridge_cmd.cpp:94–107

* Calculate the price factor for building a long bridge. * Basically the cost delta is 1,1, 1, 2,2, 3,3,3, 4,4,4,4, 5,5,5,5,5, 6,6,6,6,6,6, 7,7,7,7,7,7,7, 8,8,8,8,8,8,8,8, * @param length Length of the bridge. * @return Price factor for the bridge. */

 * @return Price factor for the bridge.
 */
int CalcBridgeLenCostFactor(int length)
{
	if (length < 2) return length;

	length -= 2;
	int sum = 2;
	for (int delta = 1;; delta++) {
		for (int count = 0; count < delta; count++) {
			if (length == 0) return sum;
			sum += delta;
			length--;
		}
	}
}

/**
 * Get the foundation for a bridge.