add pitter patter of spore tree spores, alternate paper recipe

df_trees/sounds/license.txt

@@ -1 +1,2 @@
 dfcaverns_fungus_footstep are from https://freesound.org/people/jakeh111/sounds/60853/ under CC-BY-SA 3.0 in 2008 by jakeh111
+dfcaverns_spore_tree_pitter_patter are from https://freesound.org/people/martinimeniscus/sounds/199332/ by martinimeniscus under the CC0 public domain license

df_trees/spore_tree.lua

@@ -296,7 +296,12 @@ minetest.register_abm{
 			vertical = false,
 			texture = "dfcaverns_spore_tree_spores.png",
 		})
-		
+		if math.random() < 0.025 then
+			minetest.sound_play("dfcaverns_spore_tree_pitter_patter", {
+				pos = pos,
+				gain = 0.2,
+			})
+		end
 	end,
 }
 
@@ -336,4 +341,3 @@ minetest.register_node("df_trees:spore_tree_ladder", {
 	legacy_wallmounted = true,
 	sounds = default.node_sound_wood_defaults(),
 })
-

df_trees/tunnel_tube.lua

@@ -133,6 +133,14 @@ minetest.register_craft({
 	}
 })
 
+-- Paper
+minetest.register_craft({
+	output = "default:paper 3",
+	type = "shapeless",
+	recipe = {'df_trees:tunnel_tube', 'bucket:bucket_water'},
+	replacements = {{"bucket:bucket_water", "bucket:bucket_empty"}},
+})
+
 minetest.register_node("df_trees:tunnel_tube_wood", {
 	description = S("Tunnel Tube Plies"),
 	_doc_items_longdesc = df_trees.doc.tunnel_tube_desc,