Rename empty bookshelf to empty shelf

This to account for the fact that vessel shelves can now be used here. Additionally, really loop back to cobblestone in relationship to the stone tile and its variants.

aliases.lua

@@ -60,6 +60,7 @@ minetest.register_alias("moreblocks:wood_tile_flipped","moreblocks:wood_tile")
 minetest.register_alias("moreblocks:wood_tile_down","moreblocks:wood_tile_up")
 minetest.register_alias("moreblocks:wood_tile_left","moreblocks:wood_up")
 minetest.register_alias("moreblocks:wood_tile_right","moreblocks:wood_up")
+minetest.register_alias("moreblocks:empty_bookshelf","moreblocks:empty_shelf")
 
 -- ABM for horizontal trees (fix facedir):
 local horizontal_tree_convert_facedir = {7, 12, 9, 18}

crafting.lua

@@ -153,9 +153,9 @@ minetest.register_craft({
 	}
 })
 
--- When approaching the below craft, loop back to the stone tile
+-- When approaching the below craft, loop back to cobblestone, which can then be used to craft stone tiles again
 minetest.register_craft({
-	output = "moreblocks:stone_tile",
+	output = "default:cobble",
 	recipe = {
 		{"moreblocks:split_stone_tile_alt"},
 	}
@@ -174,34 +174,35 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = "moreblocks:empty_bookshelf",
+	output = "moreblocks:empty_shelf",
 	type = "shapeless",
 	recipe = {"moreblocks:sweeper", "default:bookshelf"},
 	replacements = {{"default:bookshelf", "default:book 3"}},
-	-- When obtaining an empty bookshelf, return the books used in it as well
+	-- When obtaining an empty shelf, return the books used in it as well
 })
 
 minetest.register_craft({
-	output = "moreblocks:empty_bookshelf",
+	output = "moreblocks:empty_shelf",
 	type = "shapeless",
 	recipe = {"moreblocks:sweeper", "vessels:shelf"},
 	replacements = {{"vessels:shelf", "vessels:glass_fragments 4"}},
+	-- When obtaining an empty shelf, return four glass_fragment pieces
 })
 
 minetest.register_craft({
 	type = "shapeless",
 	output = "default:bookshelf",
-	recipe = {"moreblocks:empty_bookshelf", "default:book", "default:book", "default:book"},
+	recipe = {"moreblocks:empty_shelf", "default:book", "default:book", "default:book"},
 })
 
 minetest.register_craft({
 	type = "shapeless",
 	output = "vessels:shelf",
-	recipe = {"moreblocks:empty_bookshelf", "group:vessel", "group:vessel", "group:vessel"},
+	recipe = {"moreblocks:empty_shelf", "group:vessel", "group:vessel", "group:vessel"},
 })
 
 minetest.register_craft({
-	output = "moreblocks:empty_bookshelf",
+	output = "moreblocks:empty_shelf",
 	recipe = {
 		{"group:wood", "group:wood", "group:wood"},
 		{"", "", ""},

nodes.lua

@@ -186,11 +186,11 @@ local nodes = {
 		"default_stone.png^moreblocks_cactus_checker.png^[transformR90"},
 		sounds = sound_stone,
 	},
-	["empty_bookshelf"] = {
-		description = S("Empty Bookshelf"),
+	["empty_shelf"] = {
+		description = S("Empty Shelf"),
 		paramtype2 = "facedir",
 		tiles = {"default_wood.png", "default_wood.png", "default_wood.png",
-		"default_wood.png", "moreblocks_empty_bookshelf.png", "moreblocks_empty_bookshelf.png"},
+		"default_wood.png", "moreblocks_empty_shelf.png", "moreblocks_empty_shelf.png"},
 		groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 3},
 		is_ground_content = false,
 		sounds = sound_wood,