Method EconomyMonthlyLoop

src/industry_cmd.cpp:2446–2457

Monthly update of industry build data. */

/** Monthly update of industry build data. */
void IndustryBuildData::EconomyMonthlyLoop()
{
	static const int NEWINDS_PER_MONTH = 0x38000 / (10 * 12); // lower 16 bits is a float fraction, 3.5 industries per decade, divided by 10 * 12 months.
	if (_settings_game.difficulty.industry_density == ID_FUND_ONLY) return; // 'no industries' setting.

	/* To prevent running out of unused industries for the player to connect,
	 * add a fraction of new industries each month, but only if the manager can keep up. */
	uint max_behind = 1 + std::min(99u, Map::ScaleBySize(3)); // At most 2 industries for small maps, and 100 at the biggest map (about 6 months industry build attempts).
	if (GetCurrentTotalNumberOfIndustries() + max_behind >= (this->wanted_inds >> 16)) {
		this->wanted_inds += Map::ScaleBySize(NEWINDS_PER_MONTH);
	}
}

struct IndustryGenerationProbabilities {
	std::array<uint32_t, NUM_INDUSTRYTYPES> probs{};