-- path to default and ethereal schematics

local path = minetest.get_modpath("ethereal") .. "/schematics/"
local dpath = minetest.get_modpath("default") .. "/schematics/"

-- load schematic tables

dofile(path .. "orange_tree.lua")
dofile(path .. "banana_tree.lua")
dofile(path .. "bamboo_tree.lua")
dofile(path .. "birch_tree.lua")
dofile(path .. "bush.lua")
dofile(path .. "waterlily.lua")
dofile(path .. "volcanom.lua")
dofile(path .. "volcanol.lua")
dofile(path .. "frosttrees.lua")
dofile(path .. "palmtree.lua")
dofile(path .. "pinetree.lua")
dofile(path .. "yellowtree.lua")
dofile(path .. "mushroomone.lua")
dofile(path .. "mushroomtwo.lua")
dofile(path .. "willow.lua")
dofile(path .. "bigtree.lua")
dofile(path .. "redwood_tree.lua")
dofile(path .. "redwood_small_tree.lua")
dofile(path .. "vinetree.lua")
dofile(path .. "sakura.lua")
dofile(path .. "igloo.lua")
dofile(path .. "lemon_tree.lua")
dofile(path .. "olive_tree.lua")
dofile(path .. "basandra_bush.lua")
dofile(path .. "desertstone_spike.lua")
dofile(path .. "desertstone_under_spike.lua")
--dofile(path .. "pond.lua")

-- register decoration helper

local function register_decoration(enabled, def)

	if enabled ~= 1 then return end

	def.sidelen = def.sidelen or 80 -- some handy defaults
	def.deco_type = def.deco_type or "schematic"
	def.y_min = def.y_min or 1
	def.y_max = def.y_max or 31000
	def.flags = def.flags or "place_center_x, place_center_z"
	def.rotation = def.rotation or "random"

	minetest.register_decoration(def)
end

-- Special grass in jumble biome which must be place before schematics
register_decoration(ethereal.jumble, {
	deco_type = "simple",
	place_on = {"default:dirt_with_rainforest_litter"},
	sidelen = 8,
	noise_params = {
		offset = -0.3125,
		scale = -1.25,
		spread = {x = 150, y = 100, z = 150},
		seed = 330,
		octaves = 3,
		persist = 0.95
	},
	biomes = {"jumble"},
	decoration = "default:dirt_with_grass",
	place_offset_y = -1,
	flags = "force_placement"
})

register_decoration(ethereal.bamboo, {
	name = "ethereal:small_sakura_tree",
	deco_type = "schematic",
	place_on = "ethereal:bamboo_dirt",
	sidelen = 80,
	fill_ratio = 0.00275,
	biomes = {"bamboo"},
	y_min = 5,
	y_max = 31000,
	schematic = path.."cherry_tree_1.mts",
	flags = "place_center_x,place_center_z",
	rotation = "random",
})

register_decoration(ethereal.bamboo, {
	name = "ethereal:large_sakura_tree",
	deco_type = "schematic",
	place_on = "ethereal:bamboo_dirt",
	sidelen = 80,
	fill_ratio = 0.000285,
	biomes = {"bamboo"},
	y_min = 5,
	y_max = 31000,
	schematic = path.."cherry_tree_2.mts",
	flags = "place_center_x,place_center_z",
	replacements = {
		["cherry:cherry_tree"] = "ethereal:sakura_trunk",
		["cherry:cherry_leaves"] = "ethereal:sakura_leaves",
	},
	rotation = "random",
})

if ethereal.bamboo == 1 then
	local did_sakura = minetest.get_decoration_id('ethereal:large_sakura_tree')
	minetest.set_gen_notify('decoration',{ did_sakura })
	did_sakura = 'decoration#' .. did_sakura

	minetest.register_on_generated(function(minp, maxp)
		if maxp.y > 4 then
			--
			-- Sakura Tree - fix light
			--
			local gennotify = minetest.get_mapgen_object('gennotify')
			for _, pos in ipairs(gennotify[did_sakura] or {}) do
				minetest.after(0.2,function() minetest.fix_light(pos:offset(-9, -1, -9), pos:offset(9, 20, 9)) end)
			end
		end
	end)

	minetest.register_abm({
		label = "Sakura petals",
		nodenames = {"ethereal:sakura_leaves"},
		interval = 6,
		chance = 25,
		catch_up = false,
		action = function(pos)
			minetest.add_particlespawner({
				amount = 1,
				time = 1,
				minpos = {x = pos.x, y = pos.y, z = pos.z},
				maxpos = {x = pos.x, y = pos.y, z = pos.z},
				minvel = {x = -0.75, y = -0.4, z = -0.75},
				maxvel = {x = 0.75, y = -0.2, z = 0.75},
				minacc = {x = -0.2, y = -0.4, z = -0.2},
				maxacc = {x = 0.2, y = -0.1, z = 0.2},
				minexptime = 8,
				maxexptime = 10,
				minsize = 1.5,
				maxsize = 1.75,
				texture = "cherry_leaves_particul.png",
				collisiondetection = true,
				collision_removal = true,
				vertical = false,
			})
		end,
	})
end

-- grove trees
for i,tree in ipairs({
	ethereal.bananatree,
	ethereal.orangetree,
	ethereal.lemontree,
}) do
	register_decoration(ethereal.grove, {
		deco_type = "schematic",
		sidelen = 16,
		place_on = {"ethereal:grove_dirt"},
		noise_params = {
			offset = -0.005,
			scale = 0.01125,
			spread = {x = 100, y = 20, z = 100},
			seed = 8888 - i,
			octaves = 1,
			persistence = 0.75,
			lacunarity = 0.9,
		},
		y_max = 31000,
		y_min = 5,
		biomes = {"grove"},
		schematic = tree,
	})
end

register_decoration(1, {
	deco_type = "schematic",
	sidelen = 16,
	place_on = {"group:soil"},
	noise_params = {
		offset = -0.005,
		scale = 0.00875,
		spread = {x = 100, y = 20, z = 100},
		seed = 76,
		octaves = 1,
		persistence = 0.75,
		lacunarity = 0.9,
	},
	y_max = 31000,
	y_min = 48,
	biomes = {
		"frost",
		"taiga",
		"glacier",
		"frost_floatland",
	},
	schematic = ethereal.yellowtree,
	flags = "place_center_x,place_center_z",
})

-- old biome setting (when enabled old heat/humidity values are used)

local old = minetest.settings:get_bool("ethereal.old_biomes")

-- desertstone spike

register_decoration(minetest.get_modpath("stairs") and ethereal.caves, {
	place_on = "default:desert_stone",
	sidelen = 16, fill_ratio = 0.01, y_min = 5, y_max = 42,
	biomes = {"caves"},
	schematic = ethereal.desertstone_spike,
	spawn_by = "default:desert_stone", num_spawn_by = 8,
	flags = "place_center_x, place_center_z, force_placement", rotation = "random"})

-- desertstone under spike

register_decoration(ethereal.caves, {
	place_on = "default:stone",
	sidelen = 16, fill_ratio = 0.01, y_min = 5, y_max = 42,
	biomes = {"caves"},
	schematic = ethereal.desertstone_under_spike,
	flags = "place_center_x, place_center_z, all_floors", rotation = "random"})

-- redwood tree

register_decoration(ethereal.mesa, {
	place_on = "default:dirt_with_dry_grass",
	fill_ratio = 0.000625,
	biomes = {"mesa"},
	schematic = ethereal.redwood_tree,
	flags = "place_center_x, place_center_z",
	spawn_by = "default:dirt_with_dry_grass", num_spawn_by = 8})

register_decoration(ethereal.mesa, {
	place_on = "default:dirt_with_dry_grass",
	fill_ratio = 0.000325,
	biomes = {"mesa"},
	schematic = ethereal.redwood_small_tree,
	flags = "place_center_x, place_center_z",
	spawn_by = "default:dirt_with_dry_grass", num_spawn_by = 8})

-- igloo

register_decoration(ethereal.glacier, {
	place_on = "default:snowblock",
	fill_ratio = 0.0005, y_min = 3, y_max = 30,
	biomes = {"glacier"},
	schematic = ethereal.igloo, place_offset_y = -1,
	spawn_by = "default:snowblock", num_spawn_by = 8,
	flags = "place_center_x, place_center_z, force_placement", rotation = "random"})

-- crystal frost tree

register_decoration(ethereal.frost, {
	place_on = "ethereal:crystal_dirt",
	fill_ratio = 0.01, y_min = 1, y_max = 4000,
	biomes = {"frost", "frost_floatland"},
	schematic = ethereal.frosttrees,
	spawn_by = "ethereal:crystal_dirt", num_spawn_by = 8})

-- giant red mushroom

register_decoration(ethereal.mushroom, {
	place_on = "ethereal:mushroom_dirt",
	sidelen = 16,
	noise_params = {
		offset = 0.01,
		scale = 0.0075,
		spread = {x = 100, y = 100, z = 100},
		seed = 328,
		octaves = 2,
		persist = 0.6
	},
	biomes = {"mushroom"},
	schematic = ethereal.mushroomone,
	spawn_by = "ethereal:mushroom_dirt", num_spawn_by = 8})

register_decoration(ethereal.jumble, {
	place_on = "default:dirt_with_rainforest_litter",
	fill_ratio = 0.000275,
	biomes = {"jumble"},
	schematic = ethereal.mushroomone,
	spawn_by = "default:dirt_with_rainforest_litter", num_spawn_by = 8,
	rotation = "random"})

-- giant brown mushroom

register_decoration(ethereal.mushroom, {
	place_on = "ethereal:mushroom_dirt",
	sidelen = 16,
	noise_params = {
		offset = 0.005,
		scale = 0.0075,
		spread = {x = 100, y = 100, z = 100},
		seed = 329,
		octaves = 2,
		persist = 0.9
	},
	biomes = {"mushroom"},
	schematic = ethereal.mushroomtwo,
	spawn_by = "ethereal:mushroom_dirt", num_spawn_by = 6,
	rotation = "random"})

register_decoration(ethereal.jumble, {
	place_on = "default:dirt_with_rainforest_litter",
	fill_ratio = 0.0001,
	biomes = {"jumble"},
	schematic = ethereal.mushroomtwo,
	spawn_by = "default:dirt_with_rainforest_litter", num_spawn_by = 8,
	rotation = "random"})

-- small lava crater

register_decoration(ethereal.fiery, {
	place_on = "ethereal:fiery_dirt",
	fill_ratio = 0.00275,
	biomes = {"fiery"},
	schematic = ethereal.volcanom,
	spawn_by = "ethereal:fiery_dirt", num_spawn_by = 8})

-- large lava crater

register_decoration(ethereal.fiery, {
	place_on = "ethereal:fiery_dirt",
	fill_ratio = 0.00125,
	biomes = {"fiery"},
	schematic = ethereal.volcanol,
	spawn_by = "ethereal:fiery_dirt", num_spawn_by = 8,
	rotation = "random"})

-- basandra bush

register_decoration(ethereal.fiery, {
	place_on = "ethereal:fiery_dirt",
	fill_ratio = 0.03,
	biomes = {"fiery"},
	schematic = ethereal.basandrabush})

-- default jungle tree

register_decoration(ethereal.junglee, {
	place_on = "default:dirt_with_rainforest_litter",
	fill_ratio = 0.08,
	biomes = {"rainforest"},
	schematic = dpath .. "jungle_tree.mts"})

-- special silver sand terrain for grayness which must be placed before trees
register_decoration(ethereal.grayness, {
	name = node,
	deco_type = "simple",
	sidelen = 16,
	place_on = {"ethereal:gray_dirt"},
	noise_params = {
		offset = -0.25,
		scale = 3,
		spread = {x = 100, y = 100, z = 100},
		seed = 666,
		octaves = 3,
		persist = 0.6,
		lacunarity = 1.2,
	},
	y_max = 31000,
	y_min = 1,
	biomes = {"grayness"},
	decoration = "default:silver_sand",
	place_offset_y = -1,
	flags = "force_placement",
})

-- willow tree

register_decoration(ethereal.grayness, {
	place_on = "ethereal:gray_dirt",
	fill_ratio = 0.015,
	biomes = {"grayness"},
	schematic = ethereal.willow,
	spawn_by = "ethereal:gray_dirt", num_spawn_by = 6})

-- small pine tree for shore elevation
register_decoration(ethereal.snowy, {
	place_on = {"default:dirt_with_coniferous_litter"},
	fill_ratio = 0.025, y_min = 3, y_max = 9,
	biomes = {"coniferous_forest"},
	schematic = dpath .. "small_pine_tree.mts"}) -- ethereal.pinetree

-- small pine tree for lower elevation
register_decoration(ethereal.snowy, {
	place_on = {"default:dirt_with_coniferous_litter"},
	fill_ratio = 0.03, y_min = 10, y_max = 48,
	biomes = {"coniferous_forest"},
	schematic = dpath .. "small_pine_tree.mts"}) -- ethereal.pinetree

-- default large pine tree for lower elevation
register_decoration(ethereal.snowy, {
	place_on = {"default:dirt_with_coniferous_litter"},
	fill_ratio = 0.03, y_min = 10, y_max = 48,
	biomes = {"coniferous_forest"},
	schematic = dpath .. "pine_tree.mts"})

-- small pine for higher elevation
register_decoration(ethereal.snowy, {
	place_on = {"default:dirt_with_snow"},
	fill_ratio = 0.03, y_min = 48, y_max = 31000,
	biomes = {"taiga"},
	schematic = dpath .. "snowy_small_pine_tree_from_sapling.mts"}) -- ethereal.pinetree

register_decoration(ethereal.snowy, {
	place_on = {"default:dirt_with_snow"},
	fill_ratio = 0.03, y_min = 48, y_max = 31000,
	biomes = {"taiga"},
	schematic = dpath .. "snowy_pine_tree_from_sapling.mts"})

-- default apple tree
register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_rainforest_litter"},
	fill_ratio = 0.0005,
	biomes = {"jumble"},
	schematic = dpath.."apple_tree.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_rainforest_litter",
	num_spawn_by = 6,
})

register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 1,
	fill_ratio = 0.000275,
	biomes = {"jumble"},
	schematic = path.."gaunt_tree_1.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_grass",
	num_spawn_by = 5,
})

register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 1,
	fill_ratio = 0.0005,
	biomes = {"jumble"},
	schematic = path.."gaunt_tree_2.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_grass",
	num_spawn_by = 5,
})

register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 1,
	fill_ratio = 0.0005,
	biomes = {"jumble"},
	schematic = path.."gaunt_tree_3.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_grass",
	num_spawn_by = 5,
})

-- deciduous forest trees
register_decoration(ethereal.grassy, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 0,
	sidelen = 16,
	fill_ratio = 0.0175,
	biomes = {"deciduous_forest"},
	y_max = 31000,
	y_min = 1,
	schematic = path.."meadow_tree_1.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
})

register_decoration(ethereal.grassy, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 0,
	sidelen = 16,
	fill_ratio = 0.0025,
	biomes = {"deciduous_forest"},
	y_max = 31000,
	y_min = 1,
	schematic = path.."meadow_tree_2.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
})

register_decoration(ethereal.grassy, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 0,
	sidelen = 16,
	fill_ratio = 0.00275,
	biomes = {"deciduous_forest"},
	y_max = 31000,
	y_min = 1,
	schematic = dpath.."apple_tree.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
})

-- big old tree
register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass","default:dirt_with_rainforest_litter"},
	place_offset_y = 1,
	fill_ratio = 0.00225,
	biomes = {"jumble"},
	schematic = path.."overgrown_tree.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_rainforest_litter",
	num_spawn_by = 6,
})

register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass","default:dirt_with_rainforest_litter"},
	place_offset_y = 1,
	fill_ratio = 0.00275,
	biomes = {"jumble"},
	schematic = ethereal.bigtree,
	flags = "place_center_x, place_center_z",
	rotation = "random",
	spawn_by = "default:dirt_with_rainforest_litter",
	num_spawn_by = 6,
})

-- default aspen tree
register_decoration(ethereal.grassytwo, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 1,
	fill_ratio = 0.0025,
	y_min = 1,
	y_max = 50,
	biomes = {"grassytwo"},
	schematic = dpath.."aspen_tree.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random",
})

-- birch tree
register_decoration(ethereal.grassytwo, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_grass"},
	place_offset_y = 1,
	fill_ratio = 0.0025,
	y_min = 51,
	y_max = 31000,
	biomes = {"grassytwo"},
	schematic = ethereal.birchtree,
	flags = "place_center_x, place_center_z",
	rotation = "random",
})

-- orange tree

register_decoration(ethereal.prairie, {
	place_on = "ethereal:prairie_dirt",
	fill_ratio = 0.01,
	biomes = {"prairie"},
	schematic = ethereal.orangetree})

-- default acacia tree

register_decoration(ethereal.savanna, {
	place_on = {"default:dry_dirt_with_dry_grass", "default:dirt_with_dry_grass"},
	fill_ratio = 0.004,
	biomes = {"savanna"},
	schematic = dpath .. "acacia_tree.mts"})


-- palm tree

register_decoration(1, {
	place_on = "default:sand",
	noise_params = {
		offset = 0,
		scale = 0.005,
		spread = {x = 100, y = 20, z = 100},
		seed = 4444333221,
		octaves = 1,
		persist = 1.0
	}, y_min = 1, y_max = 3,
	biomes = {"desert_shore", "naturalbiomes:mediterranean_shore", "sandstone_desert_shore",
			"grove_shore"},
	schematic = ethereal.palmtree})

-- bamboo tree

register_decoration(ethereal.bamboo, {
	place_on = "ethereal:bamboo_dirt",
	fill_ratio = 0.0025,
	biomes = {"bamboo"},
	place_offset_y = 1,
	schematic = ethereal.bambootree})

-- vine tree

register_decoration(ethereal.swamp, {
	place_on = "default:dirt_with_grass",
	fill_ratio = 0.0175,
	biomes = {"swamp"},
	schematic = ethereal.vinetree})

-- lemon tree

register_decoration(ethereal.mediterranean, {
	place_on = "ethereal:grove_dirt",
	fill_ratio = 0.004, y_min = 5, y_max = 50,
	biomes = {"mediterranean"},
	schematic = ethereal.lemontree})

-- olive tree

register_decoration(ethereal.mediterranean, {
	place_on = "ethereal:grove_dirt",
	fill_ratio = 0.004, y_min = 5, y_max = 45,
	biomes = {"mediterranean"},
	schematic = ethereal.olivetree})

-- default large cactus
register_decoration(ethereal.desert, {
	deco_type = "schematic",
	place_on = {
		"default:desert_sand",
		"default:sand",
	},
	sidelen = 80,
	noise_params = {
		offset = -0.0001,
		scale = 0.0005,
		spread = {x = 100, y = 100, z = 100},
		seed = 230,
		octaves = 1,
		persist = 0.6
	},
	biomes = {
		"desert",
		"sandstone_desert",
	},
	y_min = 5,
	y_max = 31000,
	schematic = dpath .. "large_cactus.mts",
	flags = "place_center_x",
	rotation = "random",
})

-- default bush

register_decoration(1, {
	place_on = {"default:dirt_with_grass", "default:dirt_with_snow"},
	sidelen = 16,
	noise_params = {
		offset = -0.004,
		scale = 0.01,
		spread = {x = 100, y = 100, z = 100},
		seed = 137,
		octaves = 3,
		persist = 0.7,
	},
	biomes = {"deciduous_forest", "grassytwo"},
	y_min = 1,
	y_max = 31000,
	schematic = dpath .. "bush.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random"
})

-- extra bushes for jumble biome
register_decoration(ethereal.jumble, {
	deco_type = "schematic",
	place_on = {"default:dirt_with_rainforest_litter"},
	spawn_by = "default:dirt_with_rainforest_litter",
	num_spawn_by = 3,
	sidelen = 16,
	noise_params = {
		offset = 0.0125,
		scale = 0.01,
		spread = {x = 100, y = 100, z = 100},
		seed = 34343,
		octaves = 2,
		persist = 0.6,
	},
	biomes = {"jumble"},
	y_min = 1,
	y_max = 31000,
	schematic = dpath .. "bush.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random"
})

-- default tropical bush
register_decoration(1, {
	deco_type = "schematic",
	place_on = {"ethereal:grove_dirt", "default:dirt_with_rainforest_litter"},
	replacements = {["default:bush_leaves"] = "default:jungleleaves"},
	--sidelen = 16,
	noise_params = {
		offset = 0,
		scale = 0.01,
		spread = {x = 100, y = 100, z = 100},
		seed = 137,
		octaves = 3,
		persist = 0.5
	},
	biomes = {"grove", "rainforest"},
	y_min = 1,
	y_max = 31000,
	schematic = dpath .. "bush.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random"
})


-- default acacia bush
register_decoration(1, {
	deco_type = "schematic",
	place_on = {
		"default:dirt_with_dry_grass",
		"default:dry_dirt_with_dry_grass",
		"naturalbiomes:savannalitter"
	},
	sidelen = 16,
	noise_params = {
		offset = -0.00525,
		scale = 0.0125,
		spread = {x = 7, y = 7, z = 7},
		seed = 90155,
		octaves = 2,
		persist = 0.8,
		lacunarity = 1.5,
	},
	biomes = {"mesa","savanna"},
	y_min = 1,
	y_max = 31000,
	schematic = dpath .. "acacia_bush.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random"
})


-- default pine bush

register_decoration((minetest.registered_nodes["default:pine_bush"] and 1), {
	name = "default:pine_bush",
	place_on = {"default:dirt_with_snow", "default:cold_dirt"},
	sidelen = 16, y_min = 4, y_max = 120,
	noise_params = {
		offset = -0.004, scale = 0.01, spread = {x = 100, y = 100, z = 100},
		seed = 137, octaves = 3, persist = 0.7},
	biomes = {"taiga", "snowy_grassland"},
	schematic = dpath .. "pine_bush.mts"})

-- default blueberry bush

register_decoration((minetest.registered_nodes["default:blueberry_bush_leaves"] and 1), {
	name = "default:blueberry_bush",
	deco_type = "schematic",
	place_on = {
		"default:dirt_with_coniferous_litter", "default:dirt_with_snow", "ethereal:grove_dirt"},
	sidelen = 16,
	fill_ratio = 0.00075,
	biomes = {"coniferous_forest", "taiga", "grove"},
	y_max = 31000,
	y_min = 1,
	place_offset_y = 1,
	schematic = dpath .. "blueberry_bush.mts",
	flags = "place_center_x, place_center_z",
	rotation = "random"
})

-- place waterlily in beach areas

local sandy_biomes = {}
local desert_biomes = {
	desert = true,
	sandstone_desert = true,
	desert_shore = true,
	sandstone_desert_shore = true,
	desert_below = true,
	sandstone_desert_below = true,
}
for biome,def in pairs(asuna.biomes) do
	if def.shore == "default:sand" and
		(def.ocean == "temperate" or def.ocean == "tropical") and
		not desert_biomes[biome]
	then
		table.insert(sandy_biomes,biome)
	end
end

register_decoration(1, {
	deco_type = "schematic",
	place_on = {"default:sand"},
	sidelen = 16,
	noise_params = {
		offset = -0.12,
		scale = 0.3,
		spread = {x = 200, y = 200, z = 200},
		seed = 33,
		octaves = 3,
		persist = 0.7
	},
	biomes = sandy_biomes,
	y_min = 0,
	y_max = 0,
	schematic = ethereal.waterlily,
	rotation = "random"
})

-- coral reef

if ethereal.reefs == 1 then

	-- override corals so crystal shovel can pick them up intact
	minetest.override_item("default:coral_skeleton", {groups = {crumbly = 3}})
	minetest.override_item("default:coral_orange", {groups = {crumbly = 3}})
	minetest.override_item("default:coral_brown", {groups = {crumbly = 3}})

	--[[register_decoration(1, {
		deco_type = "schematic",
		place_on = {"default:sand"},
		noise_params = {
			offset = -0.15, scale = 0.1, spread = {x = 100, y = 100, z = 100},
			seed = 7013, octaves = 3, persist = 1},
		biomes = {"desert_ocean", "grove_ocean"},
		y_min = -8, y_max = -2,
		schematic = path .. "corals.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random"
	})]]
end

-- tree logs

if ethereal.logs == 1 then

	register_decoration(ethereal.prairie, {
		name = "default:apple_log",
		place_on = {"default:dirt_with_grass", "ethereal:prairie_dirt"},
		sidelen = 16, fill_ratio = 0.001,
		biomes = {"deciduous_forest", "jumble", "swamp", "prairie"},
		schematic = dpath .. "apple_log.mts", place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = {"default:dirt_with_grass", "ethereal:prairie_dirt"}, num_spawn_by = 8})

	register_decoration(ethereal.junglee, {
		name = "default:jungle_log",
		place_on = {"default:dirt_with_rainforest_litter"},
		fill_ratio = 0.005,
		biomes = {"rainforest"},
		schematic = dpath .. "jungle_log.mts", place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dirt_with_rainforest_litter", num_spawn_by = 8})

	register_decoration(ethereal.snowy, {
		name = "default:pine_log",
		place_on = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		fill_ratio = 0.0018, y_min = 4, y_max = 100,
		biomes = {"taiga", "coniferous_forest"},
		schematic = dpath .. "pine_log.mts", place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		num_spawn_by = 8})

	register_decoration(ethereal.savanna, {
		name = "default:acacia_log",
		deco_type = "schematic",
		place_on = {"default:dry_dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0, scale = 0.001, spread = {x = 250, y = 250, z = 250},
			seed = 2, octaves = 3, persist = 0.66},
		biomes = {"savanna"},
		schematic = dpath .. "acacia_log.mts", place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dry_dirt_with_dry_grass", num_spawn_by = 8})

	register_decoration(ethereal.plains, {
		name = "ethereal:scorched_log",
		place_on = {"ethereal:dry_dirt"},
		fill_ratio = 0.0018, y_min = 4, y_max = 100,
		biomes = {"plains"},
		schematic = {
			size = {x = 3, y = 1, z = 1},
			data = {
				{name = "ethereal:scorched_tree", param1 = 201, param2 = 16},
				{name = "ethereal:scorched_tree", param1 = 255, param2 = 16},
				{name = "ethereal:scorched_tree", param1 = 255, param2 = 16}
			}
		}, place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "ethereal:dry_dirt", num_spawn_by = 8})

	register_decoration(ethereal.grove, {
		name = "ethereal:banana_log",
		place_on = {"ethereal:grove_dirt"},
		fill_ratio = 0.0018, y_min = 4, y_max = 100,
		biomes = {"grove"},
		schematic = {
			size = {x = 3, y = 1, z = 1},
			data = {
				{name = "ethereal:banana_trunk", param1 = 255, param2 = 16},
				{name = "ethereal:banana_trunk", param1 = 255, param2 = 16},
				{name = "ethereal:banana_trunk", param1 = 201, param2 = 16}
			}
		}, place_offset_y = 1,
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "ethereal:grove_dirt", num_spawn_by = 8})
end

-- deep see fumerole / vent
print("register_decoration for nether:fumarole")

register_decoration(minetest.get_modpath("nether") and 1, {
	name = "nether:fumarole",
	place_on = {"default:sand"},
	sidelen = 16, y_min = -192, y_max = -45,
	fill_ratio = 0.0001,
	schematic = {
		size = {x = 1, y = 2, z = 2},
		data = {
			{name = "default:lava_source", param1 = 255, force_place = true},
			{name = "nether:fumarole", param1 = 255, force_place = true},
			{name = "default:sand", param1 = 192, force_place = true},
			{name = "ethereal:sandy", param1 = 192, force_place = true},
		}
	},
	place_offset_y = -1,
	spawn_by = {"default:water_source"}, num_spawn_by = 8})
print("register_decoration for nether:fumarole done")

if minetest.get_modpath("nether") then
	print("register_lbm for nether:fumarole")
	minetest.register_lbm({
		name = ":nether:extra_fumarole_timer",
		nodenames = {"nether:fumarole"},
		run_at_every_load = false,

		action = function(pos) minetest.get_node_timer(pos):start(10) end
	})
	print("register_lbm for nether:fumarole done ")
end
print("whole nether:fumarole stuff done ")