Function GetNormalGrowthRate

src/town_cmd.cpp:3836–3857

* Calculates town growth rate in normal conditions (custom growth rate not set). * If town growth speed is set to None(0) returns the same rate as if it was Normal(2). * @param t The town to calculate growth rate for * @returns Calculated growth rate */

 * @returns Calculated growth rate
 */
static uint GetNormalGrowthRate(Town *t)
{
	/**
	 * Note:
	 * Unserviced+unfunded towns get an additional malus in UpdateTownGrowth(),
	 * so the "320" is actually not better than the "420".
	 */
	static const uint16_t _grow_count_values[2][6] = {
		{ 120, 120, 120, 100,  80,  60 }, // Fund new buildings has been activated
		{ 320, 420, 300, 220, 160, 100 }  // Normal values
	};

	int n = CountActiveStations(t);
	uint16_t m = _grow_count_values[t->fund_buildings_months != 0 ? 0 : 1][std::min(n, 5)];

	uint growth_multiplier = _settings_game.economy.town_growth_rate != 0 ? _settings_game.economy.town_growth_rate - 1 : 1;

	m >>= growth_multiplier;
	if (t->larger_town) m /= 2;

	return TownTicksToGameTicks(m / (t->cache.num_houses / 50 + 1));
}

/**
 * Updates town growth rate.