Add missing mcl_util functions

Add Moss to groups: soil_bamboo, soil_sugarcane
Add moss to allowed flower placement blocks

mods/CORE/mcl_util/init.lua

@@ -22,6 +22,13 @@ function table.update_nil(t, ...)
 	return t
 end
 
+-- Copies the table then updates
+function table.merge(t, ...)
+	local t2 = table.copy(t)
+	return table.update(t2, ...)
+end
+
+
 ---Works the same as `pairs`, but order returned by keys
 ---
 ---Taken from https://www.lua.org/pil/19.3.html
@@ -630,6 +637,21 @@ function mcl_util.replace_mob(obj, mob)
 	return obj
 end
 
+
+function mcl_util.traverse_tower(pos, dir, callback)
+	local node = minetest.get_node(pos)
+	local i = 0
+	while minetest.get_node(pos).name == node.name do
+		if callback and callback(pos, dir, node) then
+			return pos,i,true
+		end
+		i = i + 1
+		pos = vector.offset(pos, 0, dir, 0)
+	end
+	return vector.offset(pos, 0, -dir, 0), i
+end
+
+
 function mcl_util.get_pointed_thing(player, liquid)
 	local pos = vector.offset(player:get_pos(), 0, player:get_properties().eye_height, 0)
 	local look_dir = vector.multiply(player:get_look_dir(), 5)

mods/ENTITIES/mobs_mc/wither.lua

@@ -437,7 +437,7 @@ mcl_mobs.register_mob("mobs_mc:wither", {
 
 })
 
-local wither_rose_soil = { "group:grass_block", "mcl_core:dirt", "mcl_core:coarse_dirt", "mcl_nether:netherrack", "group:soul_block", "mcl_mud:mud", "mcl_moss:moss" }
+local wither_rose_soil = { "group:grass_block", "mcl_core:dirt", "mcl_core:coarse_dirt", "mcl_nether:netherrack", "group:soul_block", "mcl_mud:mud", "mcl_lush_caves:moss" }
 local function spawn_wither_rose(obj)
 	local n = minetest.find_node_near(obj:get_pos(),2,wither_rose_soil)
 	if n then

mods/ITEMS/mcl_barrels/init.lua

@@ -117,6 +117,7 @@ minetest.register_node("mcl_barrels:barrel_closed", {
 	_doc_items_longdesc = S("Barrels are containers which provide 27 inventory slots."),
 	_doc_items_usagehelp = S("To access its inventory, rightclick it. When broken, the items will drop out."),
 	tiles = { "mcl_barrels_barrel_top.png^[transformR270", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png" },
+	is_ground_content = false,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	on_place = function(itemstack, placer, pointed_thing)
@@ -166,6 +167,7 @@ minetest.register_node("mcl_barrels:barrel_open", {
 	_doc_items_usagehelp = S("To access its inventory, rightclick it. When broken, the items will drop out."),
 	_doc_items_create_entry = false,
 	tiles = { "mcl_barrels_barrel_top_open.png", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png" },
+	is_ground_content = false,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	drop = "mcl_barrels:barrel_closed",

mods/ITEMS/mcl_beacons/init.lua

@@ -236,6 +236,7 @@ minetest.register_node("mcl_beacons:beacon", {
 	collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
 	mesh = "mcl_beacon.b3d",
 	tiles = {"beacon_UV.png"},
+	is_ground_content = false,
 	use_texture_alpha = "clip",
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

mods/ITEMS/mcl_beds/respawn_anchor.lua

@@ -33,6 +33,7 @@ for i=0,4 do
 				"respawn_anchor_bottom.png",
 				"respawn_anchor_side0.png"
 			},
+			is_ground_content = false,
 			on_rightclick = rightclick,
 			groups = {pickaxey=1, material_stone=1},
 			_mcl_hardness = 22.5,

mods/ITEMS/mcl_cartography_table/init.lua

@@ -10,6 +10,7 @@ minetest.register_node("mcl_cartography_table:cartography_table", {
 		"mcl_cartography_table_side3.png", "mcl_cartography_table_side2.png",
 		"mcl_cartography_table_side3.png", "mcl_cartography_table_side1.png"
 	},
+	is_ground_content = false,
 	paramtype2 = "facedir",
 	groups = { axey = 2, handy = 1, deco_block = 1, material_wood = 1, flammable = 1 },
 	sounds = mcl_sounds.node_sound_wood_defaults(),

mods/ITEMS/mcl_chests/init.lua

@@ -390,6 +390,7 @@ local function register_chest(basename, desc, longdesc, usagehelp, tt_help, tile
 		drawtype = "mesh",
 		mesh = "mcl_chests_chest.b3d",
 		tiles = small_textures,
+		is_ground_content = false,
 		use_texture_alpha = "opaque",
 		paramtype = "light",
 		paramtype2 = "facedir",

mods/ITEMS/mcl_core/nodes_base.lua

@@ -27,7 +27,7 @@ minetest.register_node("mcl_core:stone", {
 	tiles = {"default_stone.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, stonecuttable = 1, converts_to_moss = 1},
 	drop = "mcl_core:cobble",
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
@@ -297,7 +297,7 @@ minetest.register_node("mcl_core:granite", {
 	tiles = {"mcl_core_granite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -309,7 +309,7 @@ minetest.register_node("mcl_core:granite_smooth", {
 	tiles = {"mcl_core_granite_smooth.png"},
 	stack_max = 64,
 	is_ground_content = false,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -321,7 +321,7 @@ minetest.register_node("mcl_core:andesite", {
 	tiles = {"mcl_core_andesite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -333,7 +333,7 @@ minetest.register_node("mcl_core:andesite_smooth", {
 	tiles = {"mcl_core_andesite_smooth.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -345,7 +345,7 @@ minetest.register_node("mcl_core:diorite", {
 	tiles = {"mcl_core_diorite.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -357,7 +357,7 @@ minetest.register_node("mcl_core:diorite_smooth", {
 	tiles = {"mcl_core_diorite_smooth.png"},
 	is_ground_content = false,
 	stack_max = 64,
-	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, stone=1, building_block=1, material_stone=1, converts_to_moss = 1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -380,7 +380,8 @@ minetest.register_node("mcl_core:dirt_with_grass", {
 		handy = 1, shovely = 1, dirt = 2, grass_block = 1, grass_block_no_snow = 1,
 		soil = 1, soil_sapling = 2, soil_sugarcane = 1, cultivatable = 2,
 		spreading_dirt_type = 1, enderman_takable = 1, building_block = 1,
-		compostability = 30, path_creation_possible = 1, grass_palette = 1
+		compostability = 30, path_creation_possible = 1, grass_palette = 1,
+		converts_to_moss = 1
 	},
 	drop = "mcl_core:dirt",
 	sounds = mcl_sounds.node_sound_dirt_defaults({
@@ -434,7 +435,9 @@ minetest.register_node("mcl_core:mycelium", {
 	tiles = {"mcl_core_mycelium_top.png", "default_dirt.png", {name="mcl_core_mycelium_side.png", tileable_vertical=false}},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = { handy = 1, shovely = 1, dirt = 2, spreading_dirt_type = 1, enderman_takable = 1,  building_block = 1, soil_sapling = 2, path_creation_possible=1, mycelium=1},
+	groups = { handy = 1, shovely = 1, dirt = 2, spreading_dirt_type = 1, enderman_takable = 1,
+		building_block = 1, soil_sapling = 2, path_creation_possible=1, mycelium=1, converts_to_moss = 1
+	},
 	drop = "mcl_core:dirt",
 	sounds = mcl_sounds.node_sound_dirt_defaults({
 		footstep = {name="default_grass_footstep", gain=0.1},
@@ -492,7 +495,7 @@ minetest.register_node("mcl_core:podzol", {
 	tiles = {"mcl_core_dirt_podzol_top.png", "default_dirt.png", {name="mcl_core_dirt_podzol_side.png", tileable_vertical=false}},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1,shovely=3, dirt=2,soil=1, soil_sapling=2, soil_sugarcane=1, enderman_takable=1, building_block=1,path_creation_possible=1},
+	groups = {handy=1,shovely=3, dirt=2,soil=1, soil_sapling=2, soil_sugarcane=1, enderman_takable=1, building_block=1, path_creation_possible=1, converts_to_moss = 1},
 	drop = "mcl_core:dirt",
 	sounds = mcl_sounds.node_sound_dirt_defaults(),
 	on_construct = mcl_core.on_snowable_construct,
@@ -510,7 +513,9 @@ minetest.register_node("mcl_core:dirt", {
 	tiles = {"default_dirt.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = {handy=1,shovely=1, dirt=1,soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, enderman_takable=1, building_block=1, path_creation_possible=1},
+	groups = {handy=1,shovely=1, dirt=1,soil=1, soil_sapling=2, soil_sugarcane=1, cultivatable=2, enderman_takable=1,
+		building_block=1, path_creation_possible=1, converts_to_moss = 1
+	},
 	sounds = mcl_sounds.node_sound_dirt_defaults(),
 	_mcl_blast_resistance = 0.5,
 	_mcl_hardness = 0.5,
@@ -522,7 +527,9 @@ minetest.register_node("mcl_core:coarse_dirt", {
 	tiles = {"mcl_core_coarse_dirt.png"},
 	is_ground_content = true,
 	stack_max = 64,
-	groups = { handy = 1,shovely = 1, dirt = 3, soil = 1, soil_sugarcane = 1, cultivatable = 1, enderman_takable = 1, building_block = 1, soil_sapling = 2, path_creation_possible=1},
+	groups = { handy = 1,shovely = 1, dirt = 3, soil = 1, soil_sugarcane = 1, cultivatable = 1, enderman_takable = 1,
+		building_block = 1, soil_sapling = 2, path_creation_possible=1, converts_to_moss = 1
+	},
 	sounds = mcl_sounds.node_sound_dirt_defaults(),
 	_mcl_blast_resistance = 0.5,
 	_mcl_hardness = 0.5,

mods/ITEMS/mcl_deepslate/init.lua

@@ -19,7 +19,7 @@ minetest.register_node("mcl_deepslate:deepslate", {
 	paramtype2 = "facedir",
 	is_ground_content = true,
 	on_place = mcl_util.rotate_axis,
-	groups = { pickaxey = 1, stone = 1, building_block = 1, material_stone = 1 },
+	groups = { pickaxey = 1, stone = 1, building_block = 1, material_stone = 1, converts_to_moss = 1 },
 	drop = cobble,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	on_rotate = screwdriver.rotate_3way,
@@ -47,7 +47,7 @@ minetest.register_node("mcl_deepslate:tuff", {
 	_doc_items_longdesc = S("Tuff is an ornamental rock formed from volcanic ash, occurring in underground blobs below Y=16."),
 	_doc_items_hidden = false,
 	tiles = { "mcl_deepslate_tuff.png" },
-	groups = { pickaxey = 1, deco_block = 1 },
+	groups = { pickaxey = 1, deco_block = 1, converts_to_moss = 1 },
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 6,
 	_mcl_hardness = 1.5,
@@ -199,6 +199,7 @@ local function register_deepslate_variant(item, desc, longdesc)
 		_doc_items_longdesc = S(longdesc),
 		_doc_items_hidden = false,
 		tiles = { "mcl_"..texture..".png" },
+		is_ground_content = false,
 		groups = { pickaxey = 1, building_block = 1, material_stone = 1 },
 		sounds = mcl_sounds.node_sound_stone_defaults(),
 		_mcl_blast_resistance = 6,

mods/ITEMS/mcl_farming/sweet_berry.lua

@@ -1,6 +1,6 @@
 local S = minetest.get_translator(minetest.get_current_modname())
 
-local planton = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:podzol", "mcl_core:coarse_dirt", "mcl_farming:soil", "mcl_farming:soil_wet", "mcl_moss:moss"}
+local planton = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:podzol", "mcl_core:coarse_dirt", "mcl_farming:soil", "mcl_farming:soil_wet", "mcl_lush_caves:moss"}
 
 for i=0, 3 do
 	local texture = "mcl_farming_sweet_berry_bush_" .. i .. ".png"

mods/ITEMS/mcl_fletching_table/init.lua

@@ -10,11 +10,12 @@ minetest.register_node("mcl_fletching_table:fletching_table", {
 		"fletching_table_side.png", "fletching_table_side.png"
 	},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = { axey = 2, handy = 1, deco_block = 1, material_wood = 1, flammable = 1 },
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	_mcl_blast_resistance = 2.5,
 	_mcl_hardness = 2.5
-	})
+})
 
 minetest.register_craft({
 	output = "mcl_fletching_table:fletching_table",

mods/ITEMS/mcl_flowers/init.lua

@@ -41,7 +41,7 @@ local on_place_flower = mcl_util.generate_on_place_plant_function(function(pos,
 	end
 
 --[[	Placement requirements:
-	* Dirt or grass block
+	* Dirt, grass or moss block
 	* If not flower, also allowed on podzol and coarse dirt
 	* Light level >= 8 at any time or exposed to sunlight at day
 ]]
@@ -51,11 +51,11 @@ local on_place_flower = mcl_util.generate_on_place_plant_function(function(pos,
 	if (light_night and light_night >= 8) or (light_day and light_day >= minetest.LIGHT_MAX) then
 		light_ok = true
 	end
-	if itemstack:get_name() == "mcl_flowers:wither_rose" and (  minetest.get_item_group(soil_node.name, "grass_block") > 0 or soil_node.name == "mcl_core:dirt" or soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_mud:mud" or soil_node.name == "mcl_moss:moss" or soil_node.name == "mcl_nether:netherrack" or minetest.get_item_group(soil_node.name, "soul_block") > 0  ) then
+	if itemstack:get_name() == "mcl_flowers:wither_rose" and (  minetest.get_item_group(soil_node.name, "grass_block") > 0 or soil_node.name == "mcl_core:dirt" or soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_mud:mud" or soil_node.name == "mcl_lush_caves:moss" or soil_node.name == "mcl_nether:netherrack" or minetest.get_item_group(soil_node.name, "soul_block") > 0  ) then
 		return true,colorize
 	end
 	local is_flower = minetest.get_item_group(itemstack:get_name(), "flower") == 1
-	local ok = (soil_node.name == "mcl_core:dirt" or minetest.get_item_group(soil_node.name, "grass_block") == 1 or (not is_flower and (soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_core:podzol" or soil_node.name == "mcl_core:podzol_snow"))) and light_ok
+	local ok = (soil_node.name == "mcl_core:dirt" or minetest.get_item_group(soil_node.name, "grass_block") == 1 or soil_node.name == "mcl_lush_caves:moss" or (not is_flower and (soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_core:podzol" or soil_node.name == "mcl_core:podzol_snow"))) and light_ok
 	return ok, colorize
 end)
 
@@ -318,11 +318,11 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 			end
 
 			-- Placement rules:
-			-- * Allowed on dirt or grass block
+			-- * Allowed on dirt, grass or moss block
 			-- * If not a flower, also allowed on podzol and coarse dirt
 			-- * Only with light level >= 8
 			-- * Only if two enough space
-			if (floor.name == "mcl_core:dirt" or minetest.get_item_group(floor.name, "grass_block") == 1 or (not is_flower and (floor.name == "mcl_core:coarse_dirt" or floor.name == "mcl_core:podzol" or floor.name == "mcl_core:podzol_snow"))) and bottom_buildable and top_buildable and light_ok then
+			if (floor.name == "mcl_core:dirt" or minetest.get_item_group(floor.name, "grass_block") == 1 or floor.name == "mcl_lush_caves:moss" or (not is_flower and (floor.name == "mcl_core:coarse_dirt" or floor.name == "mcl_core:podzol" or floor.name == "mcl_core:podzol_snow"))) and bottom_buildable and top_buildable and light_ok then
 				local param2
 				if grass_color then
 					param2 = get_palette_color_from_pos(bottom)
@@ -419,7 +419,7 @@ minetest.register_abm({
 			return
 		end
 		-- Pop out flower if not on dirt, grass block or too low brightness
-		if (below.name ~= "mcl_core:dirt" and minetest.get_item_group(below.name, "grass_block") ~= 1) or (minetest.get_node_light(pos, 0.5) < 8) then
+		if (below.name ~= "mcl_core:dirt" and minetest.get_item_group(below.name, "grass_block") ~= 1 and below.name ~= "mcl_lush_caves:moss") or (minetest.get_node_light(pos, 0.5) < 8) then
 			minetest.dig_node(pos)
 			return
 		end

mods/ITEMS/mcl_honey/init.lua

@@ -56,6 +56,7 @@ minetest.register_node("mcl_honey:honeycomb_block", {
 	tiles = {
 		"mcl_honey_honeycomb_block.png"
 	},
+	is_ground_content = false,
 	groups = { handy = 1, deco_block = 1 },
 	sounds = {
 		dig = { name = "slimenodes_dug", gain = 0.6, pitch = 1.2 },
@@ -84,6 +85,7 @@ minetest.register_node("mcl_honey:honey_block", {
 	description = S("Honey Block"),
 	_doc_items_longdesc = S("Honey Block. Used as a decoration and in redstone. Is sticky on some sides."),
 	tiles = { "mcl_honey_block_side.png" },
+	is_ground_content = false,
 	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "blend" or true,
 	groups = { handy = 1, deco_block = 1, fall_damage_add_percent = -80 },
 	sounds = {

mods/ITEMS/mcl_loom/init.lua

@@ -11,6 +11,7 @@ minetest.register_node("mcl_loom:loom", {
 		"loom_side.png", "loom_front.png"
 	},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = { axey = 2, handy = 1, deco_block = 1, material_wood = 1, flammable = 1 },
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	_mcl_blast_resistance = 2.5,

mods/ITEMS/mcl_lush_caves/dripleaf.lua

@@ -0,0 +1,236 @@
+local modname = minetest.get_current_modname()
+local S = minetest.get_translator(modname)
+
+local plane_adjacents = {
+	vector.new(1,0,0),
+	vector.new(-1,0,0),
+	vector.new(0,0,1),
+	vector.new(0,0,-1)
+}
+
+local function get_height(pos,node)
+	local p = pos
+	local i = 0
+	repeat
+		i = i + 1
+		p = vector.offset(p,0,-1,0)
+	until minetest.get_node(p).name  ~= node.name
+	return i - 1
+end
+
+function mcl_lush_caves.dripleaf_grow(pos, node)
+	local t =  mcl_util.traverse_tower(pos,1) -- find_top(pos,node)
+	local h = get_height(t,node)
+	local target = vector.offset(t,0,1,0)
+	if minetest.get_node(target).name ~= "air" then return end
+	if h >= 5 then return end
+	minetest.set_node(t,node)
+	minetest.set_node(target,{name = "mcl_lush_caves:dripleaf_big"})
+	return true
+end
+
+minetest.register_node("mcl_lush_caves:dripleaf_big_waterroot", {
+		drawtype = "plantlike_rooted",
+		paramtype = "light",
+		paramtype2 = "leveled",
+		place_param2 = 16,
+		tiles = { "default_clay.png" },
+		special_tiles = {
+			{ name = "mcl_lush_caves_big_dripleaf_stem.png",
+				animation = {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0},
+				tileable_vertical = true,
+			}
+		},
+		inventory_image = "mcl_lush_caves_big_dripleaf_stem.png",
+		selection_box = {
+			type = "fixed",
+			fixed = {{ -3/16, -8/16, -3/16, 3/16, 8/16, 3/16 }},
+		},
+		groups = { handy = 1, dig_immediate = 3, not_in_creative_inventory = 1 },
+		drop = "",
+		node_placement_prediction = "",
+		_mcl_hardness = 0,
+		_mcl_blast_resistance = 0,
+		_mcl_silk_touch_drop = true,
+		_on_bone_meal = function(itemstack,placer, pointed_thing, pos, node)
+			if not pos then return end
+			return mcl_lush_caves.dripleaf_grow(pos,node)
+		end
+})
+minetest.register_node("mcl_lush_caves:dripleaf_big_stem", {
+	description = S("Dripleaf stem"),
+	_doc_items_create_entry = S("Dripleaf stem"),
+	_doc_items_entry_name = S("Dripleaf stem"),
+	_doc_items_longdesc = S("Dripleaf stem"),
+	paramtype = "light",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = false,
+	drawtype = "plantlike",
+	tiles = {"mcl_lush_caves_big_dripleaf_stem.png"},
+	inventory_image = "mcl_lush_caves_big_dripleaf_stem.png",
+	wield_image = "mcl_lush_caves_big_dripleaf_stem.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {{ -3/16, -8/16, -3/16, 3/16, 8/16, 3/16 }},
+	},
+	drop = "",
+	groups = { shearsy = 1, handy = 1, plant=1, supported_node=0, destroy_by_lava_flow=1, dig_by_piston=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+	on_construct = function(pos)
+		local p = pos
+		local l = 0
+		local in_water = false
+		for _,a in pairs(plane_adjacents) do
+			if minetest.get_item_group(minetest.get_node(vector.add(pos,a)).name,"water") > 0 then
+				in_water = true
+			end
+		end
+		if not in_water then return end
+		repeat
+			l = l + 1
+			p = vector.offset(p,0,1,0)
+		until minetest.get_item_group(minetest.get_node(p).name,"water") <= 0
+		minetest.set_node(p,{name = "mcl_lush_caves:dripleaf_big"})
+		minetest.set_node(vector.offset(pos,0,-1,0),{ name = "mcl_lush_caves:dripleaf_big_waterroot", param2 = l * 16})
+	end,
+	_on_bone_meal = function(itemstack, clicker, pointed_thing, pos, node)
+		return mcl_lush_caves.dripleaf_grow(pos,node)
+	end
+})
+local dripleaf = {
+	description = S("Dripleaf"),
+	_doc_items_create_entry = S("Dripleaf"),
+	_doc_items_entry_name = S("Dripleaf"),
+	_doc_items_longdesc = S("Dripleaf"),
+	paramtype = "light",
+	place_param2 = 0,
+	sunlight_propagates = true,
+	walkable = true,
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
+		},
+	},
+	tiles = {"mcl_lush_caves_big_dripleaf_top.png"},
+	inventory_image = "mcl_lush_caves_big_dripleaf_top.png",
+	wield_image = "mcl_lush_caves_big_dripleaf_top.png",
+	use_texture_alpha = "clip",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
+		},
+	},
+	groups = { shearsy = 1, handy = 1, plant=1, supported_node=0, dig_by_water=1,destroy_by_lava_flow=1, dig_by_piston=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		if itemstack:get_name() ~= "mcl_dye:white" then return itemstack end
+		itemstack:take_item(1)
+		mcl_lush_caves.dripleaf_grow(vector.offset(pos,0,-1,0),{name = "mcl_lush_caves:dripleaf_big_stem" })
+	end
+}
+local dripleaf_tipped = table.merge(dripleaf, {
+	walkable = false,
+	tiles = {"mcl_lush_caves_big_dripleaf_tip.png"},
+	on_timer = function(p,e)
+		minetest.swap_node(p,{name="mcl_lush_caves:dripleaf_big"})
+	end,
+})
+
+dripleaf.mesecons = {effector = {
+	action_on = function(pos, node)
+		node.param2 = 1
+		minetest.swap_node(pos, node)
+	end,
+	action_off = function(pos, node)
+		node.param2 = 0
+		minetest.swap_node(pos, node)
+	end,
+	rules = mesecon.rules.alldirs,
+}}
+
+minetest.register_node("mcl_lush_caves:dripleaf_big",dripleaf)
+minetest.register_node("mcl_lush_caves:dripleaf_big_tipped",dripleaf_tipped)
+
+minetest.register_node("mcl_lush_caves:dripleaf_small_stem", {
+	description = S("Small dripleaf stem"),
+	_doc_items_create_entry = S("Small dripleaf stem"),
+	_doc_items_entry_name = S("Small dripleaf stem"),
+	_doc_items_longdesc = S("Small dripleaf stem"),
+	paramtype = "light",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = false,
+	drawtype = "plantlike",
+	tiles = {"mcl_lush_caves_small_dripleaf_stem_top.png"},
+	inventory_image = "mcl_lush_caves_small_dripleaf_stem_top.png",
+	wield_image = "mcl_lush_caves_small_dripleaf_stem_top.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
+		},
+	},
+	groups = { shearsy = 1, handy = 1, plant=1, supported_node=0, dig_by_water=1,destroy_by_lava_flow=1, dig_by_piston=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+})
+
+minetest.register_node("mcl_lush_caves:dripleaf_small", {
+	description = S("Dripleaf"),
+	_doc_items_create_entry = S("Dripleaf"),
+	_doc_items_entry_name = S("Dripleaf"),
+	_doc_items_longdesc = S("Dripleaf"),
+	paramtype = "light",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = true,
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
+		},
+	},
+	tiles = {"mcl_lush_caves_small_dripleaf_top.png"},
+	inventory_image = "mcl_lush_caves_small_dripleaf_top.png",
+	wield_image = "mcl_lush_caves_small_dripleaf_top.png",
+	use_texture_alpha = "clip",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
+		},
+	},
+	groups = { shearsy = 1, handy = 1, plant=1, supported_node=0, dig_by_water=1,destroy_by_lava_flow=1, dig_by_piston=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+})
+
+
+local player_dripleaf = {}
+minetest.register_globalstep(function(dtime)
+	for _,p in pairs(minetest.get_connected_players()) do
+		local pos = p:get_pos()
+		local n = minetest.get_node(pos)
+		if n.name == "mcl_lush_caves:dripleaf_big" and n.param2 == 0 then
+			if not player_dripleaf[p] then player_dripleaf[p] = 0 end
+			player_dripleaf[p] = player_dripleaf[p] + dtime
+			if player_dripleaf[p] > 1 then
+				minetest.swap_node(pos,{name = "mcl_lush_caves:dripleaf_big_tipped"})
+				player_dripleaf[p] = nil
+				local t = minetest.get_node_timer(pos)
+				t:start(3)
+			end
+		end
+	end
+end)

mods/ITEMS/mcl_lush_caves/init.lua

@@ -0,0 +1,282 @@
+mcl_lush_caves = {}
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+local S = minetest.get_translator(modname)
+
+local PARTICLE_DISTANCE = 25
+
+local adjacents = {
+	vector.new(1,0,0),
+	vector.new(-1,0,0),
+	vector.new(0,0,1),
+	vector.new(0,0,-1),
+	vector.new(0,-1,0)
+}
+
+local function vector_distance_xz(a, b)
+	return vector.distance(
+		{ x=a.x, y=0, z=a.z },
+		{ x=b.x, y=0, z=b.z }
+	)
+end
+
+dofile(modpath.."/nodes.lua")
+dofile(modpath.."/dripleaf.lua")
+
+local spore_blossom_particlespawner = {
+	texture = "mcl_lush_caves_spore_blossom_particle.png",
+	amount = 32,
+	time = 25,
+	minvel = vector.zero(),
+	maxvel = vector.zero(),
+	minacc = vector.new(-0.2, -0.1, -0.2),
+	maxacc = vector.new(0.2, -0.3, 0.2),
+	minexptime = 1.5,
+	maxexptime = 8.5,
+	minsize = 0.1,
+	maxsize= 0.4,
+	glow = 4,
+	collisiondetection = true,
+	collision_removal = true,
+}
+
+minetest.register_abm({
+	label = "Spore Blossom Particles",
+	nodenames = {"mcl_lush_caves:spore_blossom"},
+	interval = 25,
+	chance = 10,
+	action = function(pos, node)
+		if minetest.get_node(vector.offset(pos, 0, -1, 0)).name ~= "air" then return end
+		for _,pl in pairs(minetest.get_connected_players()) do
+			if vector.distance(pos,pl:get_pos()) < PARTICLE_DISTANCE then
+				minetest.add_particlespawner(table.merge(spore_blossom_particlespawner, {
+					minpos = vector.offset(pos, -0.25, -0.5, -0.25),
+					maxpos = vector.offset(pos, 0.25, -0.5, 0.25),
+					playername = pl:get_player_name(),
+				}))
+			end
+		end
+	end
+})
+
+function mcl_lush_caves.makelake(pos,def,pr)
+	local p1 = vector.offset(pos,-8,-4,-8)
+	local p2 = vector.offset(pos,8,4,8)
+	local nn = minetest.find_nodes_in_area_under_air(p1,p2,{"group:solid"})
+	table.sort(nn,function(a, b)
+		   return vector_distance_xz(pos, a) < vector_distance_xz(pos, b)
+	end)
+	if not nn[1] then return end
+	local dripleaves = {}
+	for i=1,pr:next(1,#nn) do
+		minetest.set_node(nn[i],{name="mcl_core:water_source"})
+		if pr:next(1,20) == 1 then
+			table.insert(dripleaves,nn[i])
+		end
+	end
+	local nnn = minetest.find_nodes_in_area(p1,p2,{"mcl_core:water_source"})
+	for k,v in pairs(nnn) do
+		for kk,vv in pairs(adjacents) do
+			local pp = vector.add(v,vv)
+			local an = minetest.get_node(pp)
+			if an.name ~= "mcl_core:water_source" then
+				minetest.set_node(pp,{name="mcl_core:clay"})
+				if pr:next(1,20) == 1 then
+					minetest.set_node(vector.offset(pp,0,1,0),{name="mcl_lush_caves:moss_carpet"})
+				end
+			end
+		end
+	end
+	for _,d in pairs(dripleaves) do
+		if minetest.get_item_group(minetest.get_node(d).name,"water") > 0 then
+			minetest.set_node(vector.offset(d,0,-1,0),{name="mcl_lush_caves:dripleaf_big_waterroot"})
+			minetest.registered_nodes["mcl_lush_caves:dripleaf_big_stem"].on_construct(d)
+			for ii = 1, pr:next(1,4) do
+				mcl_lush_caves.dripleaf_grow(d,{name = "mcl_lush_caves:dripleaf_big_stem"})
+			end
+		end
+	end
+	return true
+end
+
+local function set_of_content_ids_by_group(group)
+	local result = {}
+	for name, def in pairs(minetest.registered_nodes) do
+		if def.groups[group] then
+			result[minetest.get_content_id(name)] = true
+		end
+	end
+	return result
+end
+
+local CONVERTS_TO_ROOTED_DIRT = set_of_content_ids_by_group("material_stone")
+CONVERTS_TO_ROOTED_DIRT[minetest.get_content_id("mcl_core:dirt")] = true
+CONVERTS_TO_ROOTED_DIRT[minetest.get_content_id("mcl_core:coarse_dirt")] = true
+local CONTENT_HANGING_ROOTS = minetest.get_content_id("mcl_lush_caves:hanging_roots")
+local CONTENT_ROOTED_DIRT = minetest.get_content_id("mcl_lush_caves:rooted_dirt")
+
+local function squared_average(a, b)
+	local s = a + b
+	return s*s/4
+end
+
+-- Azalea tree voxel manipulator buffer
+local data = {}
+
+function mcl_lush_caves.makeazalea(pos, def, pr)
+	local distance = {x = 4, y = 40, z = 4}
+	local airup = minetest.find_nodes_in_area_under_air(vector.offset(pos, 0, distance.y, 0), pos, {"mcl_core:dirt_with_grass"})
+	if #airup == 0 then return end
+	local surface_pos = airup[1]
+
+	local function squared_distance(x, z)
+		local dx = x - pos.x
+		local dz = z - pos.z
+		return dx*dx + dz*dz
+	end
+
+	local maximum_random_value = squared_average(distance.x, distance.z) + 1
+
+	local min = vector.offset(pos, -distance.x, -1, -distance.z)
+	local max = vector.offset(pos, distance.x, distance.y, distance.z)
+
+	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
+	vm:get_data(data)
+
+	local a = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
+
+	local vi, below
+	for z = min.z, max.z do
+		for y = min.y + 1, surface_pos.y - 1 do
+			for x = min.x, max.x do
+				vi = a:index(x, y, z)
+				local probability_value = maximum_random_value - squared_distance(x, z)
+				if CONVERTS_TO_ROOTED_DIRT[data[vi]] and pr:next(1, maximum_random_value) <= probability_value then
+					data[vi] = CONTENT_ROOTED_DIRT
+					below = a:index(x, y - 1, z)
+					if data[below] == minetest.CONTENT_AIR then
+						data[below] = CONTENT_HANGING_ROOTS
+					end
+				end
+			end
+		end
+	end
+	data[a:index(surface_pos.x, surface_pos.y, surface_pos.z)] = CONTENT_ROOTED_DIRT
+	vm:set_data(data)
+	minetest.place_schematic_on_vmanip(vm,
+		vector.offset(surface_pos, -3, 1, -3),
+		modpath.."/schematics/azalea1.mts",
+		"random",nil,nil,
+		"place_center_x place_center_z"
+	)
+	vm:calc_lighting()
+	vm:write_to_map()
+	minetest.log("action","[mcl_lush_caves] Azalea generated at "..minetest.pos_to_string(surface_pos))
+	return true
+end
+
+
+
+local lushcaves = { "LushCaves", "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean"}
+minetest.register_abm({
+	label = "Cave vines grow",
+	nodenames = {"mcl_lush_caves:cave_vines_lit","mcl_lush_caves:cave_vines"},
+	interval = 180,
+	chance = 5,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		local pu = vector.offset(pos,0,1,0)
+		local pun = minetest.get_node(pu).name
+		local pd = vector.offset(pos,0,-1,0)
+		local pd2 = minetest.get_node(vector.offset(pos,0,-2,0)).name
+		if pun ~= "mcl_lush_caves:cave_vines_lit" and pun ~= "mcl_lush_caves:cave_vines"  and pun ~= "mcl_lush_caves:moss" then
+			minetest.set_node(pos,{name="air"})
+			return
+		end
+		node.name = "mcl_lush_caves:cave_vines"
+		if  math.random(5) == 1 then
+			node.name="mcl_lush_caves:cave_vines_lit"
+		end
+		if minetest.get_node(pd).name == "air" and pd2 == "air" then
+			minetest.swap_node(pd,node)
+		else
+			minetest.swap_node(pos,{name="mcl_lush_caves:cave_vines_lit"})
+		end
+	end
+})
+
+
+
+mcl_structures.register_structure("clay_pool",{
+	place_on = {"group:material_stone","mcl_core:gravel","mcl_lush_caves:moss","mcl_core:clay"},
+	spawn_by = {"air"},
+	num_spawn_by = 1,
+	fill_ratio = 0.01,
+	terrain_feature = true,
+	flags = "all_floors",
+	y_max = -10,
+	biomes = lushcaves,
+	place_func = mcl_lush_caves.makelake,
+})
+
+local azaleas = {}
+local az_limit = 500
+mcl_structures.register_structure("azalea_tree",{
+	place_on = {"group:material_stone","mcl_core:gravel","mcl_lush_caves:moss","mcl_core:clay"},
+	spawn_by = {"air"},
+	num_spawn_by = 1,
+	fill_ratio = 0.15,
+	flags = "all_ceilings",
+	terrain_feature = true,
+	y_max =0,
+	y_min = mcl_vars.mg_overworld_min + 15,
+	biomes = lushcaves,
+	place_func = function(pos,def,pr)
+		for _,a in pairs(azaleas) do
+			if vector.distance(pos,a) < az_limit then
+				return true
+			end
+		end
+		if mcl_lush_caves.makeazalea(pos,def,pr) then
+			table.insert(azaleas,pos)
+			return true
+		end
+	end
+})
+--[[
+minetest.set_gen_notify({cave_begin = true})
+minetest.set_gen_notify({large_cave_begin = true})
+
+mcl_mapgen_core.register_generator("lush_caves",nil, function(minp, maxp, blockseed)
+	local gennotify = minetest.get_mapgen_object("gennotify")
+	for _, pos in pairs(gennotify["large_cave_begin"] or {}) do
+		--minetest.log("large cave at "..minetest.pos_to_string(pos))
+	end
+	for _, pos in pairs(gennotify["cave_begin"] or {}) do
+		minetest.log("cave at "..minetest.pos_to_string(pos))
+	end
+end, 99999, true)
+--]]
+
+minetest.register_craft({
+		type = "fuel",
+		recipe = "mcl_lush_caves:azalea",
+		burntime = 5,
+})
+
+minetest.register_craft({
+		type = "fuel",
+		recipe = "mcl_lush_caves:azalea_flowering",
+		burntime = 5,
+})
+
+mcl_flowerpots.register_potted_flower("mcl_lush_caves:azalea", {
+	name = "azalea",
+	desc = S("Azalea Plant"),
+	image = "mcl_lush_caves_azalea_side.png",
+})
+
+mcl_flowerpots.register_potted_flower("mcl_lush_caves:azalea_flowering", {
+	name = "azalea_flowering",
+	desc = S("Flowering Azalea Plant"),
+	image = "mcl_lush_caves_azalea_flowering_side.png",
+})

mods/ITEMS/mcl_lush_caves/mod.conf

@@ -0,0 +1,3 @@
+name = mcl_lush_caves
+author = cora
+depends = mcl_util, mcl_structures, mcl_flowerpots

mods/ITEMS/mcl_lush_caves/nodes.lua

@@ -0,0 +1,420 @@
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+local S = minetest.get_translator(modname)
+
+-- Return a vegetation type with the following chances
+--   Tall Grass: 52.08%
+--   Moss Carpet: 26.04%
+--   Double Grass: 10.42%
+--   Azalea: 7.29%
+--   Flowering Azalea: 4.17%
+local function random_moss_vegetation()
+	local x = math.random()
+	if x < 0.5208 then
+		return "mcl_flowers:tallgrass"
+	elseif x < 0.7812 then
+		return "mcl_lush_caves:moss_carpet"
+	elseif x < 0.8854 then
+		return "mcl_flowers:double_grass"
+	elseif x < 0.9583 then
+		return "mcl_lush_caves:azalea"
+	else
+		return "mcl_lush_caves:azalea_flowering"
+	end
+end
+
+-- sets the node at 'pos' to moss and with a 60% chance sets the node above to
+-- vegatation
+local function set_moss_with_chance_vegetation(pos)
+	minetest.set_node(pos, { name = "mcl_lush_caves:moss" })
+	if math.random() < 0.6 then
+		local vegetation = random_moss_vegetation()
+		local pos_up = vector.offset(pos, 0, 1, 0)
+		if vegetation == "mcl_flowers:double_grass" then
+			local pos_up2 = vector.offset(pos, 0, 2, 0)
+			if minetest.registered_nodes[minetest.get_node(pos_up2).name].buildable_to then
+				minetest.set_node(pos_up, { name = "mcl_flowers:double_grass" })
+				minetest.set_node(pos_up2, { name = "mcl_flowers:double_grass_top" })
+			else
+				minetest.set_node(pos_up, { name = "mcl_flowers:tallgrass" })
+			end
+		else
+			minetest.set_node(pos_up, { name = vegetation })
+		end
+	end
+end
+
+function mcl_lush_caves.bone_meal_moss(itemstack, placer, pointed_thing, pos)
+	if minetest.get_node(vector.offset(pos, 0, 1, 0)).name ~= "air" then
+		return false
+	end
+
+	local x_max = math.random(2, 3)
+	local z_max = math.random(2, 3)
+	local area_positions = minetest.find_nodes_in_area_under_air(
+		vector.offset(pos, -x_max, -6, -z_max),
+		vector.offset(pos, x_max, 4, z_max),
+		{ "group:converts_to_moss" }
+	)
+
+	for _, conversion_pos in pairs(area_positions) do
+		local x_distance = math.abs(pos.x - conversion_pos.x)
+		local z_distance = math.abs(pos.z - conversion_pos.z)
+
+		if not ( x_distance == x_max and z_distance == z_max ) then
+			if x_distance == x_max or z_distance == z_max then
+				if math.random() < 0.75 then
+					set_moss_with_chance_vegetation(conversion_pos)
+				end
+			else
+				set_moss_with_chance_vegetation(conversion_pos)
+			end
+		end
+	end
+	return true
+end
+
+minetest.register_node("mcl_lush_caves:moss", {
+	description = S("Moss"),
+	_doc_items_longdesc = S("Moss is a green block found in lush caves"),
+	_doc_items_entry_name = "moss",
+	_doc_items_hidden = false,
+	tiles = {"mcl_lush_caves_moss_block.png"},
+	groups = { handy=1, hoey=2, dirt=1, soil=1, soil_bamboo=1, soil_sapling=2, soil_sugarcane=1, enderman_takable=1, building_block=1, flammable=1, fire_encouragement=60, fire_flammability=20, grass_block_no_snow = 1 },
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	_mcl_blast_resistance = 0.1,
+	_mcl_hardness = 0.1,
+	_on_bone_meal = mcl_lush_caves.bone_meal_moss,
+})
+
+minetest.register_node("mcl_lush_caves:moss_carpet", {
+	description = S("Moss carpet"),
+	_doc_items_longdesc = S("Moss carpet"),
+	_doc_items_entry_name = "moss_carpet",
+
+	is_ground_content = false,
+	tiles = {"mcl_lush_caves_moss_carpet.png"},
+	wield_image ="mcl_lush_caves_moss_carpet.png",
+	wield_scale = { x=1, y=1, z=0.5 },
+	groups = {handy=1, carpet=1,supported_node=1,flammable=1,fire_encouragement=60, fire_flammability=20, deco_block=1, dig_by_water=1 },
+	sounds = mcl_sounds.node_sound_wool_defaults(),
+	paramtype = "light",
+	sunlight_propagates = true,
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16},
+		},
+	},
+	_mcl_hardness = 0.1,
+	_mcl_blast_resistance = 0.1,
+})
+
+minetest.register_node("mcl_lush_caves:hanging_roots", {
+	description = S("Hanging roots"),
+	_doc_items_create_entry = S("Hanging roots"),
+	_doc_items_entry_name = S("Hanging roots"),
+	_doc_items_longdesc = S("Hanging roots"),
+	paramtype = "light",
+	--paramtype2 = "meshoptions",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = false,
+	drawtype = "plantlike",
+	--drop = "mcl_farming:wheat_seeds",
+	tiles = {"mcl_lush_caves_hanging_roots.png"},
+	inventory_image = "mcl_lush_caves_hanging_roots.png",
+	wield_image = "mcl_lush_caves_hanging_roots.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
+		},
+	},
+	groups = { shearsy = 1, dig_immediate=3, plant=1, supported_node=0,	dig_by_water=1,destroy_by_lava_flow=1, dig_by_piston=1, cultivatable=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+})
+
+minetest.register_node("mcl_lush_caves:cave_vines", {
+	description = S("Cave vines"),
+	_doc_items_create_entry = S("Cave vines"),
+	_doc_items_entry_name = S("Cave vines"),
+	_doc_items_longdesc = S("Cave vines"),
+	paramtype = "light",
+	--paramtype2 = "meshoptions",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = false,
+	drawtype = "plantlike",
+	--drop = "mcl_farming:wheat_seeds",
+	tiles = {"mcl_lush_caves_cave_vines.png"},
+	inventory_image = "mcl_lush_caves_cave_vines.png",
+	wield_image = "mcl_lush_caves_cave_vines.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
+		},
+	},
+	groups = { shearsy = 1, dig_immediate=3, plant=1, supported_node=0, dig_by_water=1, destroy_by_lava_flow=1, dig_by_piston=1, cultivatable=1, converts_to_moss = 1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 0,
+})
+
+minetest.register_node("mcl_lush_caves:cave_vines_lit", {
+	description = S("Cave vines"),
+	_doc_items_create_entry = S("Cave vines"),
+	_doc_items_entry_name = S("Cave vines"),
+	_doc_items_longdesc = S("Cave vines"),
+	paramtype = "light",
+	--paramtype2 = "meshoptions",
+	place_param2 = 3,
+	sunlight_propagates = true,
+	walkable = false,
+	drawtype = "plantlike",
+	--drop = "mcl_farming:wheat_seeds",
+	light_source = 9,
+	tiles = {"mcl_lush_caves_cave_vines_lit.png"},
+	inventory_image = "mcl_lush_caves_cave_vines_lit.png",
+	wield_image = "mcl_lush_caves_cave_vines_lit.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
+		},
+	},
+	groups = { shearsy = 1, handy = 1, plant=1, supported_node=0, dig_by_water=1,destroy_by_lava_flow=1, dig_by_piston=1 },
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_blast_hardness = 1,
+	_mcl_shears_drop = true,
+	 drop = {
+		max_items = 2,
+		items = {
+			{
+				items = {
+				"mcl_lush_caves:glow_berry ",
+				"mcl_lush_caves:cave_vines",
+				},
+			},
+		},
+	},
+	on_rightclick = function(pos)
+		minetest.add_item(pos,"mcl_lush_caves:glow_berry")
+		minetest.set_node(pos,{name="mcl_lush_caves:cave_vines"})
+	end,
+})
+
+minetest.register_node("mcl_lush_caves:rooted_dirt", {
+	description = S("Rooted dirt"),
+	_doc_items_longdesc = S("Rooted dirt"),
+	_doc_items_hidden = false,
+	tiles = {"mcl_lush_caves_rooted_dirt.png"},
+	groups = {handy=1, shovely=1, dirt=1, building_block=1, path_creation_possible=1, converts_to_moss = 1},
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	_mcl_blast_resistance = 0.5,
+	_mcl_hardness = 0.5,
+})
+
+minetest.register_craftitem("mcl_lush_caves:glow_berry", {
+	description = S("Glow berry"),
+	_doc_items_longdesc = S("This is a food item which can be eaten."),
+	inventory_image = "mcl_lush_caves_glow_berries.png",
+	on_place = minetest.item_eat(2),
+	on_secondary_use = minetest.item_eat(2),
+	groups = {food = 2, eatable = 2, compostability = 50},
+	_mcl_saturation = 1.2,
+})
+
+minetest.register_node("mcl_lush_caves:azalea_leaves", {
+	description = S("Azalea Leaves"),
+	_doc_items_longdesc = S("Leaves of an Azalea tree"),
+	_doc_items_hidden = false,
+	drawtype = "allfaces_optional",
+	waving = 2,
+	place_param2 = 1, -- Prevent leafdecay for placed nodes
+	tiles = { "mcl_lush_caves_azalea_leaves.png" },
+	paramtype = "light",
+	groups = {
+		hoey = 1, shearsy = 1, dig_by_piston = 1,
+		leaves = 1, leafdecay = 5, deco_block = 1,
+		flammable = 2, fire_encouragement = 30, fire_flammability = 60,
+		compostability = 30
+	},
+	drop = {
+			max_items = 1,
+			items = {
+				--{
+				--	items = {sapling},
+				--	rarity = 10
+				--},
+				{
+					items = {"mcl_core:stick 1"},
+					rarity = 3
+				},
+				{
+					items = {"mcl_core:stick 2"},
+					rarity = 6
+				},
+			}
+		},
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0.2,
+	_mcl_hardness = 0.2,
+	_mcl_shears_drop = true,
+	_mcl_silk_touch_drop = true,
+})
+
+minetest.register_node("mcl_lush_caves:azalea_leaves_flowering", {
+	description = S("Flowering Azalea Leaves"),
+	_doc_items_longdesc = S("The Flowering Leaves of an Azalea tree"),
+	_doc_items_hidden = false,
+	drawtype = "allfaces_optional",
+	waving = 2,
+	place_param2 = 1, -- Prevent leafdecay for placed nodes
+	tiles = { "mcl_lush_caves_azalea_leaves_flowering.png" },
+	paramtype = "light",
+	groups = {
+		hoey = 1, shearsy = 1, dig_by_piston = 1,
+		leaves = 1, leafdecay = 5, deco_block = 1,
+		flammable = 2, fire_encouragement = 30, fire_flammability = 60,
+		compostability = 30
+	},
+	drop = {
+			max_items = 1,
+			items = {
+				--{
+				--	items = {sapling},
+				--	rarity = 10
+				--},
+				{
+					items = {"mcl_core:stick 1"},
+					rarity = 3
+				},
+				{
+					items = {"mcl_core:stick 2"},
+					rarity = 6
+				},
+			}
+		},
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0.2,
+	_mcl_hardness = 0.2,
+	_mcl_shears_drop = true,
+	_mcl_silk_touch_drop = true,
+})
+
+
+minetest.register_node("mcl_lush_caves:spore_blossom", {
+	description = S("Spore blossom"),
+	_doc_items_longdesc = S("Spore blossom"),
+	_doc_items_hidden = false,
+	tiles = {"mcl_lush_caves_spore_blossom.png"},
+	drawtype = "plantlike",
+	param2type = "meshoptions",
+	place_param2 = 4,
+	groups = {handy = 1, plant = 1},
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {{ -3/16, -2/16, -3/16, 3/16, 8/16, 3/16 }},
+	},
+	_mcl_blast_resistance = 0.5,
+	_mcl_hardness = 0.5,
+	node_placement_prediction = "",
+	on_place = mcl_util.generate_on_place_plant_function(function(place_pos, place_node,stack)
+		local above = vector.offset(place_pos,0,1,0)
+		local snn = minetest.get_node_or_nil(above).name
+		if not snn then return false end
+		if minetest.get_item_group(snn,"soil_sapling") > 0 then
+			return true
+		end
+	end)
+})
+
+local tpl_azalea = {
+	_tt_help = S("Needs soil and bone meal to grow"),
+	_doc_items_hidden = false,
+  drawtype = "nodebox",
+	node_box = {
+    type = "fixed",
+    fixed = {
+      { -8/16, -4/16, -8/16, 8/16, 8/16, 8/16 },
+      { -2/16, -8/16, -2/16, 2/16, -4/16, 2/16 },
+    }
+  },
+	is_ground_content = false,
+	groups = {
+		handy = 1, shearsy = 1,
+		plant = 1, non_mycelium_plant = 1,
+		dig_by_piston = 1, dig_by_water = 1,
+		flammable = 2, fire_encouragement = 15, fire_flammability = 40,
+		deco_block = 1,
+	},
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	paramtype = "light",
+	sunlight_propagates = true,
+	_mcl_blast_resistance = 0,
+	_mcl_hardness = 0,
+	use_texture_alpha = "clip",
+	node_placement_prediction = "",
+	on_place = mcl_util.generate_on_place_plant_function(function(pos, node, itemstack)
+			local floor_name = minetest.get_node_or_nil(vector.offset(pos, 0, -1, 0)).name
+			if not floor_name then return false end
+			if minetest.get_item_group(floor_name, "soil_sapling") > 0 or floor_name == "mcl_lush_caves:rooted_dirt" or floor_name == "mcl_mangrove:mangrove_mud_roots" or floor_name == "mcl_mud:mud" or floor_name == "mcl_core:clay" then
+				return true
+			end
+	end),
+  _on_bone_meal = function(itemstack, placer, pointed_thing, pos)
+		if math.random() > 0.45 or not mcl_trees.check_growth_simple(pos, 6) then return end
+		minetest.set_node(vector.offset(pos, 0, -1, 0), { name = "mcl_lush_caves:rooted_dirt" })
+    minetest.remove_node(pos)
+    minetest.place_schematic(
+			vector.offset(pos, -3, 0, -3),
+			modpath.."/schematics/azalea1.mts",
+			"random",
+			nil,
+			false,
+			"place_center_x place_center_z"
+		)
+    return true
+  end
+}
+
+local azalea = table.merge(
+	tpl_azalea, {
+		description = S("Azalea"),
+		_doc_items_longdesc = S("Azalea is a small plant which often occurs in lush caves. It can be broken by hand or any tool. By using bone meal, azalea can be turned into an azalea tree."),
+		_doc_items_entry_name = "azalea",
+		tiles = {
+			"mcl_lush_caves_azalea_top.png",
+			"mcl_lush_caves_azalea_bottom.png",
+			"mcl_lush_caves_azalea_side.png",
+			"mcl_lush_caves_azalea_side.png",
+			"mcl_lush_caves_azalea_side.png",
+			"mcl_lush_caves_azalea_side.png",
+		},
+})
+azalea.groups.compostability = 65
+minetest.register_node("mcl_lush_caves:azalea", azalea)
+
+local azalea_flowering = table.merge(
+	tpl_azalea, {
+		description = S("Flowering Azalea"),
+		_doc_items_longdesc = S("Flowering azalea is a small plant which often occurs in lush caves. It can be broken by hand or any tool. By using bone meal, flowering azalea can be turned into an azalea tree."),
+		_doc_items_entry_name = "azalea_flowering",
+		tiles = {
+			"mcl_lush_caves_azalea_flowering_top.png",
+			"mcl_lush_caves_azalea_flowering_bottom.png",
+			"mcl_lush_caves_azalea_flowering_side.png",
+			"mcl_lush_caves_azalea_flowering_side.png",
+			"mcl_lush_caves_azalea_flowering_side.png",
+			"mcl_lush_caves_azalea_flowering_side.png",
+		},
+})
+azalea_flowering.groups.compostability = 85
+minetest.register_node("mcl_lush_caves:azalea_flowering", azalea_flowering)

mods/ITEMS/mcl_mud/init.lua

@@ -5,13 +5,12 @@ minetest.register_node("mcl_mud:mud", {
 	_doc_items_longdesc = S("Mud is a decorative block that generates in mangrove swamps. Mud can also be obtained by using water bottles on dirt or coarse dirt."),
 	_doc_items_hidden = false,
 	tiles = {"mcl_mud.png"},
-	is_ground_content = true,
 	sounds = {
 		footstep = {name="mud_footsteps", gain=1},
 		dug = {name="mud_place_dug", gain=1},
 		place = {name="mud_place_dug", gain=1},
 	},
-	groups = {handy=1, shovely=1, enderman_takable=1, grass_block=1, soil_sugarcane=1, building_block=1},
+	groups = {handy=1, shovely=1, enderman_takable=1, grass_block=1, soil_sugarcane=1, building_block=1, converts_to_moss = 1},
 	_mcl_blast_resistance = 0.5,
 	_mcl_hardness = 0.5,
 	collision_box = {
@@ -27,6 +26,7 @@ minetest.register_node("mcl_mud:packed_mud", {
 	_doc_items_longdesc = S("Packed mud is a decorative block used to craft mud bricks."),
 	_doc_items_hidden = false,
 	tiles = {"mcl_mud_packed_mud.png"},
+	is_ground_content = false,
 	groups = {handy=1, pickaxey=1, building_block=1},
 	sounds = mcl_sounds.node_sound_dirt_defaults(),
 	_mcl_blast_resistance = 3,
@@ -39,6 +39,7 @@ minetest.register_node("mcl_mud:mud_bricks", {
 	_doc_items_hidden = false,
 	tiles = {"mcl_mud_bricks.png"},
 	groups = {handy=1, pickaxey=1, building_block=1},
+	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	_mcl_blast_resistance = 3,
 	_mcl_hardness = 1.5,

mods/ITEMS/mcl_nether/init.lua

@@ -70,7 +70,7 @@ minetest.register_node("mcl_nether:netheriteblock", {
 	_doc_items_longdesc = S("Netherite block is very hard and can be made of 9 netherite ingots."),
 	stack_max = 64,
 	tiles = {"mcl_nether_netheriteblock.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	groups = { pickaxey=4, building_block=1, material_stone=1, xp = 0, fire_immune=1 },
 	drop = "mcl_nether:netheriteblock",
 	sounds = mcl_sounds.node_sound_stone_defaults(),

mods/ITEMS/mcl_ocean/kelp.lua

@@ -662,6 +662,7 @@ minetest.register_node("mcl_ocean:dried_kelp_block", {
 	description = S("Dried Kelp Block"),
 	_doc_items_longdesc = S("A decorative block that serves as a great furnace fuel."),
 	tiles = { "mcl_ocean_dried_kelp_top.png", "mcl_ocean_dried_kelp_bottom.png", "mcl_ocean_dried_kelp_side.png" },
+	is_ground_content = false,
 	groups = {
 		handy = 1, hoey = 1, building_block = 1, compostability = 50,
 		flammable = 2, fire_encouragement = 30, fire_flammability = 60

mods/MAPGEN/mcl_biomes/init.lua

@@ -3530,6 +3530,101 @@ local function register_decorations()
 	for k, _ in pairs(corals) do
 		register_coral_decos(k)
 	end
+
+
+	local lushcaves = { "LushCaves", "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean"}
+	local lushcaves_underground = { "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean"}
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:moss",
+		deco_type = "simple",
+		place_on = {"mcl_core:stone","mcl_deepslate:deepslate","mcl_deepslate:tuff","group:material_stone", "mcl_core:gravel", "mcl_core:bedrock"},
+		biomes = lushcaves,
+		fill_ratio = 10,
+		flags = "all_floors, all_ceilings",
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_flowers:tallgrass",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		biomes = lushcaves,
+		fill_ratio = 1,
+		flags = "all_floors",
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		height = 1,
+		height_max = 4,
+		fill_ratio = 0.2,
+		flags = "all_ceilings",
+		biomes = lushcaves_underground,
+	})
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines_lit",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		height = 1,
+		height_max = 4,
+		fill_ratio = 0.3,
+		flags = "all_ceilings",
+		biomes = lushcaves_underground,
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines_lit",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:cave_vines_lit","mcl_lush_caves:cave_vines"},
+		height = 1,
+		height_max = 4,
+		fill_ratio = 0.1,
+		flags = "all_ceilings",
+		biomes = lushcaves_underground,
+	})
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:cave_vines_lit","mcl_lush_caves:cave_vines"},
+		height = 1,
+		height_max = 5,
+		fill_ratio = 0.1,
+		flags = "all_ceilings",
+		biomes = lushcaves_underground,
+	})
+
+	minetest.register_decoration({
+		place_on = {"mcl_lush_caves:rooted_dirt"},
+		decoration = "mcl_lush_caves:hanging_roots",
+		deco_type = "simple",
+		fill_ratio = 10,
+		flags = "all_ceilings",
+		biomes = lushcaves,
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:spore_blossom",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		spawn_by = {"air"},
+		num_spawn_by = 4,
+		fill_ratio = 0.8,
+		param2 = 4,
+		flags = "all_ceilings",
+		biomes = lushcaves_underground,
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:moss_carpet",
+		deco_type = "simple",
+		place_on = {"group:material_stone","mcl_core:gravel","mcl_lush_caves:moss"},
+		fill_ratio = 0.1,
+		flags = "all_floors",
+		biomes = lushcaves,
+	})
+
 	minetest.register_decoration({
 		deco_type = "simple",
 		place_on = {"group:sand", "mcl_core:gravel", "mcl_mud:mud"},