add_random_building_construct_effect

add_random_building_construct_effect = { # Province scope
	if = {
		limit = { has_variable = random_building_variable }
		switch = {
			trigger = var:random_building_variable
			0 = {
				add_next_building_tier_effect = { BUILDING = outposts }
			}
			1 = {
				add_next_building_tier_effect = { BUILDING = logging_camps }
			}
			2 = {
				add_next_building_tier_effect = { BUILDING = peat_quarries }
			}
			3 = {
				add_next_building_tier_effect = { BUILDING = hill_forts }
			}
			4 = {
				add_next_building_tier_effect = { BUILDING = plantations }
			}
			5 = {
				add_next_building_tier_effect = { BUILDING = quarries }
			}
			6 = {
				add_next_building_tier_effect = { BUILDING = hunting_grounds }
			}
			7 = {
				add_next_building_tier_effect = { BUILDING = military_camps }
			}
			8 = {
				add_next_building_tier_effect = { BUILDING = horse_pastures }
			}
			9 = {
				add_next_building_tier_effect = { BUILDING = hillside_grazing }
			}
			10 = {
				add_next_building_tier_effect = { BUILDING = warrior_lodges }
			}
			11 = {
				add_next_building_tier_effect = { BUILDING = pastures }
			}
			12 = {
				add_next_building_tier_effect = { BUILDING = ramparts }
			}
			13 = {
				add_next_building_tier_effect = { BUILDING = curtain_walls }
			}
			14 = {
				add_next_building_tier_effect = { BUILDING = watchtowers }
			}
			15 = {
				add_next_building_tier_effect = { BUILDING = cereal_fields }
			}
			16 = {
				add_next_building_tier_effect = { BUILDING = barracks }
			}
			17 = {
				add_next_building_tier_effect = { BUILDING = camel_farms }
			}
			18 = {
				add_next_building_tier_effect = { BUILDING = hill_farms }
			}
			19 = {
				add_next_building_tier_effect = { BUILDING = elephant_pens }
			}
			20 = {
				add_next_building_tier_effect = { BUILDING = common_tradeport }
			}
			21 = {
				add_next_building_tier_effect = { BUILDING = hospices }
			}
			22 = {
				add_next_building_tier_effect = { BUILDING = qanats }
			}
			23 = {
				add_next_building_tier_effect = { BUILDING = murex_farm }
			}
			24 = {
				add_next_building_tier_effect = { BUILDING = wind_furnace }
			}
			25 = {
				add_next_building_tier_effect = { BUILDING = stables }
			}
			26 = {
				add_next_building_tier_effect = { BUILDING = smiths }
			}
			27 = {
				add_next_building_tier_effect = { BUILDING = orchards }
			}
			28 = {
				add_next_building_tier_effect = { BUILDING = farm_estates }
			}
			29 = {
				add_next_building_tier_effect = { BUILDING = regimental_grounds }
			}
			30 = {
				add_next_building_tier_effect = { BUILDING = caravanserai }
			}
			31 = {
				add_next_building_tier_effect = { BUILDING = windmills }
			}
			32 = {
				add_next_building_tier_effect = { BUILDING = watermills }
			}
			33 = {
				add_next_building_tier_effect = { BUILDING = workshops }
			}
			34 = {
				add_next_building_tier_effect = { BUILDING = monastic_schools }
			}
			35 = {
				add_next_building_tier_effect = { BUILDING = guild_halls }
			}
			36 = {
				add_next_building_tier_effect = { BUILDING = scriptorium }
			}
			37 = {
				add_next_building_tier_effect = { BUILDING = megalith }
			}
			42 = {

As written in game/common/scripted_effects/00_building_effects.txt.