make lush caves use new structures api

The other way would sometimes have multiple azaleas fairly close

mods/ITEMS/mcl_lush_caves/init.lua

@@ -0,0 +1,677 @@
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+local S = minetest.get_translator(modname)
+
+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 plane_adjacents = {
+	vector.new(1,0,0),
+	vector.new(-1,0,0),
+	vector.new(0,0,1),
+	vector.new(0,0,-1)
+}
+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
+mcl_lush_caves = {}
+
+local function find_top(pos,node)
+	local p = pos
+	repeat
+		p = vector.offset(p,0,1,0)
+	until minetest.get_node(p).name ~= node.name
+	return p
+end
+
+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
+
+local function dripleaf_grow(pos, node)
+	local t = 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"})
+end
+
+function mcl_lush_caves.makelake(pos,def,pr)
+	local p1 = vector.offset(pos,-5,-2,-5)
+	local p2 = vector.offset(pos,5,1,5)
+	local nn = minetest.find_nodes_in_area_under_air(p1,p2,{"group:material_stone","mcl_core:clay","mcl_lush_caves:moss"})
+	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_under_air(p1,p2,{"mcl_core:water_source","group:water"})
+	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
+				dripleaf_grow(d,{name = "mcl_lush_caves:dripleaf_big_stem"})
+			end
+		end
+	end
+	return true
+end
+
+function mcl_lush_caves.makeazaela(pos,def,pr)
+	local airup = minetest.find_nodes_in_area_under_air(vector.offset(pos,0,40,0),pos,{"mcl_core:dirt_with_grass"})
+	if #airup == 0 then
+		return end
+	local surface_pos = airup[1]
+	local nn = minetest.find_nodes_in_area(vector.offset(pos,-4,0,-4),vector.offset(pos,4,40,4),{"group:material_stone","mcl_core:dirt","mcl_core:coarse_dirt"})
+	table.sort(nn,function(a, b) return vector_distance_xz(surface_pos, a) < vector_distance_xz(surface_pos, b) end)
+	minetest.set_node(pos,{name="mcl_lush_caves:rooted_dirt"})
+	for i=1,math.random(1,#nn) do
+		local below = vector.offset(nn[i],0,-1,0)
+		minetest.set_node(nn[i],{name="mcl_lush_caves:rooted_dirt"})
+		if minetest.get_node(below).name == "air" then
+			minetest.set_node(below,{name = "mcl_lush_caves:hanging_roots"})
+		end
+	end
+	for _,v in pairs(nn) do
+		for _,a in pairs(adjacents) do
+			local p = vector.add(v,a)
+			if minetest.get_item_group(minetest.get_node(p).name,"material_stone") > 0 then
+				if math.random(2) == 1 then minetest.set_node(p,{name="mcl_core:stone"}) end
+			end
+		end
+	end
+	minetest.place_schematic(vector.offset(surface_pos,-2,0,-2),modpath.."/schematics/azalea1.mts","random",nil,nil,"place_center_x place_center_z")
+	minetest.log("action","[mcl_lush_caves] Azalea generated at "..minetest.pos_to_string(surface_pos))
+	return true
+end
+
+minetest.register_node("mcl_lush_caves:lake_structblock", {drawtype="airlike",walkable = false,pointable=false,groups = {structblock=1,not_in_creative_inventory=1},})
+minetest.register_node("mcl_lush_caves:azalea_structblock", {drawtype="airlike",walkable = false,pointable=false,groups = {structblock=1,not_in_creative_inventory=1},})
+
+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"},
+	is_ground_content = false,
+	groups = {handy=1, hoey=2, dirt=1, soil=1, soil_sapling=2, 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,
+})
+
+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 },
+	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,
+	drop = "mcl_lush_caves:glow_berry",
+	on_dig = 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: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 = {
+				{ -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+				{ -0.5, 0.5, -0.5, 0.5, 1.0, 0.5 },
+			}
+		},
+		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_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			if itemstack:get_name() ~= "mcl_dye:white" then return itemstack end
+			itemstack:take_item(1)
+			--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 = {
+			{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
+		},
+	},
+	drops = "",
+	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_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		if itemstack:get_name() ~= "mcl_dye:white" then return itemstack end
+		itemstack:take_item(1)
+		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)
+		dripleaf_grow(vector.offset(pos,0,-1,0),{name = "mcl_lush_caves:dripleaf_big_stem" })
+	end
+}
+local dripleaf_tipped = table.copy(dripleaf)
+dripleaf_tipped.walkable = false
+dripleaf_tipped.tiles = {"mcl_lush_caves_big_dripleaf_tip.png"}
+dripleaf_tipped.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,
+})
+
+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"},
+	is_ground_content = true,
+	stack_max = 64,
+	groups = {handy=1,shovely=1, dirt=1, building_block=1, path_creation_possible=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."),
+	stack_max = 64,
+	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 = description,
+	_doc_items_longdesc = longdesc,
+	_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",
+	stack_max = 64,
+	groups = {
+		hoey = 1, shearsy = 1, swordy = 1, dig_by_piston = 1,
+		leaves = 1, leafdecay = leafdecay_distance, deco_block = 1,
+		flammable = 2, fire_encouragement = 30, fire_flammability = 60,
+		compostability = 30
+	},
+	_mcl_shears_drop = true,
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0.2,
+	_mcl_hardness = 0.2,
+	_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 = "light",
+	is_ground_content = true,
+	stack_max = 64,
+	groups = {handy = 1, plant = 1},
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	_mcl_blast_resistance = 0.5,
+	_mcl_hardness = 0.5,
+})
+
+
+minetest.register_node("mcl_lush_caves:azalea", {
+	description = S("Azalea"),
+	inventory_image = "mcl_lush_caves_azalea_plant.png",
+	drawtype = "allfaces_optional",
+--	drawtype = "nodebox",
+--	node_box = {
+--		type = "fixed",
+--		fixed = {
+--			{ -16/16, -0/16, -16/16,  16/16, 16/16,  16/16 },
+--			{ -2/16, -16/16, -2/16,  2/16,  0/16,  2/16 },
+--		}
+--	},
+	--tiles = { "blank.png" },
+	tiles = {
+		"mcl_lush_caves_azalea_top.png",
+		"mcl_lush_caves_azalea_top.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",
+	},
+	is_ground_content = false,
+	groups = { handy=1 },
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_hardness = 0,
+	use_texture_alpha = "clip",
+})
+
+minetest.register_node("mcl_lush_caves:azalea_flowering", {
+	description = S("Flowering azalea"),
+	inventory_image = "mcl_lush_caves_azalea_flowering_top.png",
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -16/16, -4/16, -16/16,  16/16, 16/16,  16/16 },
+			{ -2/16, -16/16, -2/16,  2/16,  -4/16,  2/16 },
+		}
+	},
+	--tiles = { "blank.png" },
+	tiles = {
+		"mcl_lush_caves_azalea_flowering_top.png",
+		"mcl_lush_caves_azalea_flowering_top.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",
+	},
+	is_ground_content = false,
+	groups = { handy=1 },
+	sounds = mcl_sounds.node_sound_dirt_defaults(),
+	_mcl_blast_resistance = 0,
+	_mcl_hardness = 0,
+	use_texture_alpha = "clip",
+})
+--]]
+
+minetest.register_node("mcl_lush_caves:azalea_leaves_flowering", {
+	description = description,
+	_doc_items_longdesc = longdesc,
+	_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",
+	stack_max = 64,
+	groups = {
+		handy = 1, hoey = 1, shearsy = 1, swordy = 1, dig_by_piston = 1,
+		leaves = 1, leafdecay = leafdecay_distance, deco_block = 1,
+		flammable = 2, fire_encouragement = 30, fire_flammability = 60,
+		compostability = 30
+	},
+	_mcl_shears_drop = true,
+	sounds = mcl_sounds.node_sound_leaves_defaults(),
+	_mcl_blast_resistance = 0.2,
+	_mcl_hardness = 0.2,
+	_mcl_silk_touch_drop = true,
+})
+
+
+
+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
+})
+
+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)
+
+local lushcaves = { "LushCaves", "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean"}
+
+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,
+	noise_params = {
+		offset = 0,
+		scale = 0.01,
+		spread = {x = 250, y = 250, z = 250},
+		seed = 78375213,
+		octaves = 5,
+		persist = 0.1,
+		flags = "absvalue",
+	},
+	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",
+	y_max =-10,
+	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
+			if mcl_lush_caves.makeazalea(pos,def,pr) then
+				table.insert(azaleas,pos)
+				return true
+			end
+		end
+	end
+})

mods/ITEMS/mcl_lush_caves/mod.conf

@@ -0,0 +1,3 @@
+name = mcl_lush_caves
+author = cora
+depends = mcl_sounds, mesecons, mcl_mapgen_core, mcl_structures

mods/MAPGEN/mcl_biomes/init.lua

@@ -127,6 +127,7 @@ local function register_biomes()
 		"MesaBryce",
 		"MesaPlateauF",
 		"MesaPlateauFM",
+		"LushCaves",
 	}
 
 	-- Ice Plains Spikes (rare)
@@ -1442,6 +1443,44 @@ local function register_biomes()
 		_mcl_palette_index = 29,
 	})
 
+	minetest.register_biome({
+		name = "LushCaves",
+		node_top = "mcl_core:dirt_with_grass",
+		depth_top = 1,
+		node_filler = "mcl_core:dirt",
+		depth_filler = 3,
+		node_riverbed = "mcl_core:sand",
+		node_cave_liquid = "mcl_core:water_source",
+		depth_riverbed = 2,
+		y_min = 2,
+		y_max = 20,
+		vertical_blend = 1,
+		humidity_point = 45,
+		heat_point = 53,
+		--humidity_point = 83,
+		--heat_point = 55,
+		_mcl_biome_type = "medium",
+		_mcl_palette_index = 0,
+	})
+
+	minetest.register_biome({
+		name = "LushCaves_ocean",
+		node_top = "mcl_core:sand",
+		depth_top = 1,
+		node_filler = "mcl_core:sand",
+		depth_filler = 3,
+		node_riverbed = "mcl_core:sand",
+		node_cave_liquid = "mcl_core:water_source",
+		depth_riverbed = 2,
+		y_min = OCEAN_MIN,
+		y_max = 0,
+		vertical_blend = 1,
+		humidity_point = 83,
+		heat_point = 57,
+		_mcl_biome_type = "medium",
+		_mcl_palette_index = 0,
+	})
+
 	-- Add deep ocean and underground biomes automatically.
 	for i=1, #overworld_biomes do
 		local biome = overworld_biomes[i]
@@ -2414,7 +2453,8 @@ local function register_dimension_ores()
 
 end
 
-
+local deco_id_makelake
+local deco_id_makeazalea
 -- All mapgens except mgv6
 
 -- Template to register a grass or fern decoration
@@ -4323,6 +4363,135 @@ local function register_decorations()
 	register_flower("allium", nil, 0) -- flower Forest only
 	register_flower("blue_orchid", {"Swampland"}, 64500, false)
 
+	--Lush Caves
+	local lushcaves = { "LushCaves", "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean"}
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:moss",
+		deco_type = "simple",
+		place_on = {"group:material_stone", "mcl_core:gravel", "mcl_core:bedrock"},
+		spawn_by = {"air"},
+		num_spawn_by = 1,
+		sidelen = 80,
+		y_max = 1,
+		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"},
+		spawn_by = {"air"},
+		num_spawn_by = 4,
+		sidelen = 16,
+		y_max = -1,
+		biomes = lushcaves,
+		fill_ratio = 1,
+		flags = "all_floors",
+	})
+	minetest.register_decoration({
+		decoration = "mcl_flowers:tallgrass",
+		deco_type = "simple",
+		place_on = {"mcl_core:dirt_with_grass"},
+		spawn_by = {"air"},
+		num_spawn_by = 4,
+		sidelen = 16,
+		biomes = lushcaves,
+		fill_ratio = 0.1,
+	})
+
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		height = 1,
+		max_height = 4,
+		sidelen = 16,
+		fill_ratio = 0.2,
+		y_max = -10,
+		flags = "all_ceilings",
+		biomes = lushcaves,
+	})
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:cave_vines_lit",
+		deco_type = "simple",
+		place_on = {"mcl_lush_caves:moss"},
+		height = 1,
+		max_height = 4,
+		sidelen = 16,
+		fill_ratio = 0.3,
+		flags = "all_ceilings",
+		biomes = lushcaves,
+	})
+
+	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,
+		max_height = 4,
+		sidelen = 16,
+		fill_ratio = 0.1,
+		flags = "all_ceilings",
+		biomes = lushcaves,
+	})
+	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,
+		max_height = 4,
+		sidelen = 16,
+		fill_ratio = 0.1,
+		flags = "all_ceilings",
+		biomes = lushcaves,
+	})
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:hanging_roots",
+		deco_type = "simple",
+		sidelen = 16,
+		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","group:material_stone"},
+		spawn_by = {"air"},
+		num_spawn_by = 4,
+		sidelen = 16,
+		fill_ratio = 0,
+		flags = "place_center_x, place_center_z, force_placement, all_ceilings",
+		biomes = { "LushCaves_underground", "LushCaves_ocean", "LushCaves_deep_ocean" },
+	})--]]
+
+	minetest.register_decoration({
+		decoration = "mcl_lush_caves:moss_carpet",
+		deco_type = "simple",
+		place_on = {"group:material_stone","mcl_core:gravel","mcl_lush_caves:moss"},
+		spawn_by = {"air"},
+		num_spawn_by = 4,
+		sidelen = 16,
+		fill_ratio = 0.1,
+		flags = "all_floors",
+		biomes = lushcaves,
+	})
+--[[]
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = "mcl_lush_caves:moss","mcl_core:clay",
+		sidelen = 16,
+		fill_ratio = 5,
+		biomes = lushcaves,
+		decoration = "mcl_flowers:tallgrass",
+		flags = "all_floors",
+	})
+--]]
 end
 
 -- Decorations in non-Overworld dimensions
@@ -4680,7 +4849,6 @@ local function register_dimension_decorations()
 
 	deco_id_chorus_plant = minetest.get_decoration_id("mcl_biomes:chorus_plant")
 	minetest.set_gen_notify({decoration=true}, { deco_id_chorus_plant })
-
 	-- TODO: End cities
 
 end
@@ -4750,5 +4918,4 @@ if mg_name ~= "singlenode" then
 			end
 		end)
 	end
-
 end