add mapgen

df_caverns/init.lua

@@ -18,4 +18,5 @@ dofile(modpath.."/lava_sea.lua")
 dofile(modpath.."/underworld.lua")
 dofile(modpath.."/primordial.lua")
 dofile(modpath.."/dungeon_loot.lua")
-dofile(modpath.."/growth_restrictions.lua")
+dofile(modpath.."/growth_restrictions.lua")
+dofile(modpath.."/lorebooks.lua")

df_caverns/lorebooks.lua

@@ -0,0 +1,20 @@
+if not minetest.get_modpath("df_lorebooks") then return end
+
+local foundations = {"group:stone", "group:dirt", "group:soil"}
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+	if maxp.y > 0 or maxp.y < df_caverns.config.primordial_min then return end
+
+	-- using after so that all other mapgen should be finished fiddling with stuff by the time this runs
+	minetest.after(1, function(minp, maxp)
+		local middle = vector.divide(vector.add(minp, maxp), 2)
+		if collectible_lore.are_cairns_close_to_pos(middle) then return end -- quick and dirty check to discard mapblocks close to other cairns
+		local possibles = minetest.find_nodes_in_area_under_air(minp, maxp, foundations)
+		if next(possibles) then
+			local target = possibles[math.random(#possibles)]
+			target.y=target.y+1
+			collectible_lore.place_cairn(target)
+		end		
+	end, minp, maxp)
+
+end)

df_caverns/mod.conf

@@ -1,4 +1,4 @@
 name = df_caverns
 description = Adds vast underground caverns in the style of Dwarf Fortress, complete with underground flora in diverse biomes. Also adds stalactite/stalagmite decorations in the smaller tunnels.
 depends = df_dependencies, subterrane, df_trees, df_mapitems,
-optional_depends = df_farming, ice_sprites, oil, df_underworld_items, magma_conduits, bones_loot, named_waypoints, name_generator, fireflies, chasms, big_webs, mcl_flowers, mine_gas, bubblesponge
+optional_depends = df_farming, ice_sprites, oil, df_underworld_items, magma_conduits, bones_loot, named_waypoints, name_generator, fireflies, chasms, big_webs, mcl_flowers, mine_gas, bubblesponge, df_lorebooks