add an achievement for collecting all lorebooks

df_achievements/locale/template.txt

@@ -107,6 +107,7 @@ Slightly less prestigious than the Primordial Fruit, but still rare and exotic c
 Activating a puzzle seal has produced a breach in the slade foundations of the world.=
 
 Capture an Ice Sprite=
+Collect All Lore=
 Decipher the code of the ancients. Do you dare turn the key?=
 Detonate Mine Gas=
 Get Attacked by an Underworld Guardian=
@@ -125,6 +126,8 @@ You've captured an ice sprite and placed it in a bottle. It dances and sparkles
 
 You've discovered something important about those mysterious slade statues in the Underworld.=
 
+You've searched the world top to bottom for cairns containing lore and your collection is now complete.=
+
 
 ### travel.lua ###
 

df_achievements/misc.lua

@@ -82,6 +82,23 @@ if minetest.get_modpath("df_underworld_items") then
 
 end
 
+if minetest.get_modpath("df_lorebooks") then
+	collectible_lore.register_on_collected(function(player_name, id, state, collected)
+		local count = 0
+		for id, val in pairs(collected) do
+			if val then count = count + 1 end
+		end
+		if count >= #(collectible_lore.lorebooks) then
+			awards.unlock(player_name, "dfcaverns_all_lorebooks_found")
+		end
+	end)
+	awards.register_achievement("dfcaverns_all_lorebooks_found", {
+		title = S("Collect All Lore"),
+		difficulty = 4,
+		description = S("You've searched the world top to bottom for cairns containing lore and your collection is now complete."),
+		icon = "dfcaverns_awards_backgroundx32.png^dfcaverns_awards_lore_cairnsx32.png^dfcaverns_awards_foregroundx32.png",
+	})
+end
 
 -- can't think of an easy way to detect these
 --awards.register_achievement("dfcaverns_torch_detonated_mine_gas", {

df_achievements/mod.conf

@@ -1,4 +1,4 @@
 name=df_achievements
 description=Achievements for DFCaverns
 depends=df_caverns, df_trees, df_farming, df_mapitems, df_dependencies, pit_caves
-optional_depends=df_underworld_items, hunter_statue, awards, big_webs, bubblesponge
+optional_depends=df_underworld_items, hunter_statue, awards, big_webs, bubblesponge, df_lorebooks