local function register_grass_decoration(offset, scale, length)
	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:dirt_with_grass", "default:sand"},
		sidelen = 16,
		noise_params = {
			offset = offset,
			scale = scale,
			spread = {x = 200, y = 200, z = 200},
			seed = 329,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"grassland", "grassland_dunes", "deciduous_forest",
			"coniferous_forest", "coniferous_forest_dunes"},
		y_min = 1,
		y_max = 31000,
		decoration = "default:grass_" .. length,
	})
end

local function register_dry_grass_decoration(offset, scale, length)
	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = offset,
			scale = scale,
			spread = {x = 200, y = 200, z = 200},
			seed = 329,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		decoration = "default:dry_grass_" .. length,
	})
end


minetest.clear_registered_decorations()

	-- Apple tree and log

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 26,
		noise_params = {
			offset = 0.016,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/tree1.mts",
		replacements = {["nodebox_trees:trunk_base"] = "default:tree",},
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 26,
		noise_params = {
			offset = 0.016,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/tree2.mts",
		replacements = {["nodebox_trees:trunk_base"] = "default:tree",},
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 26,
		noise_params = {
			offset = 0.016,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/tree3.mts",
		replacements = {["nodebox_trees:trunk_base"] = "default:tree",},
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 26,
		noise_params = {
			offset = 0.016,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/tree4.mts",
		replacements = {["nodebox_trees:trunk_base"] = "default:tree",},
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0018,
			scale = 0.0011,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = {
			size = {x = 3, y = 3, z = 1},
			data = {
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "default:tree", param2 = 12, prob = 191},
				{name = "default:tree", param2 = 12},
				{name = "default:tree", param2 = 12, prob = 127},
				{name = "air", prob = 0},
				{name = "flowers:mushroom_brown", prob = 63},
				{name = "air", prob = 0},
			},
		},
		flags = "place_center_x",
		rotation = "random",
	})

	-- Jungle tree and log

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.015,
		biomes = {"rainforest", "rainforest_swamp"},
		y_min = -1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/jungletree1.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.015,
		biomes = {"rainforest", "rainforest_swamp"},
		y_min = -1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/jungletree2.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.015,
		biomes = {"rainforest", "rainforest_swamp"},
		y_min = -1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/jungletree3.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.015,
		biomes = {"rainforest", "rainforest_swamp"},
		y_min = -1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/jungletree4.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.005,
		biomes = {"rainforest", "rainforest_swamp"},
		y_min = 1,
		y_max = 31000,
		schematic = {
			size = {x = 3, y = 3, z = 1},
			data = {
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "default:jungletree", param2 = 12, prob = 191},
				{name = "default:jungletree", param2 = 12},
				{name = "default:jungletree", param2 = 12, prob = 127},
				{name = "air", prob = 0},
				{name = "flowers:mushroom_brown", prob = 127},
				{name = "air", prob = 0},
			},
		},
		flags = "place_center_x",
		rotation = "random",
	})

	-- Taiga and temperate coniferous forest pine tree and log

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.026,
			scale = 0.012,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest"},
		y_min = 2,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/pine1.mts",
		replacements = {["nodebox_trees:pine_trunk_base"] = "default:pine_tree",},
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.026,
			scale = 0.012,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest"},
		y_min = 2,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/pine2.mts",
		replacements = {["nodebox_trees:pine_trunk_base"] = "default:pine_tree",},
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.026,
			scale = 0.012,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest"},
		y_min = 2,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/pine3.mts",
		replacements = {["nodebox_trees:pine_trunk_base"] = "default:pine_tree",},
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.026,
			scale = 0.012,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest"},
		y_min = 2,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/pine4.mts",
		replacements = {["nodebox_trees:pine_trunk_base"] = "default:pine_tree",},
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
		sidelen = 80,
		noise_params = {
			offset = 0.0018,
			scale = 0.0011,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = {
			size = {x = 3, y = 3, z = 1},
			data = {
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "default:pine_tree", param2 = 12, prob = 191},
				{name = "default:pine_tree", param2 = 12},
				{name = "default:pine_tree", param2 = 12, prob = 127},
				{name = "air", prob = 0},
				{name = "flowers:mushroom_red", prob = 63},
				{name = "air", prob = 0},
			},
		},
		flags = "place_center_x",
		rotation = "random",
	})

	-- Acacia tree and log

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("default") .. "/schematics/acacia_tree.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default: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"},
		y_min = 1,
		y_max = 31000,
		schematic = {
			size = {x = 3, y = 2, z = 1},
			data = {
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "default:acacia_tree", param2 = 12, prob = 191},
				{name = "default:acacia_tree", param2 = 12},
				{name = "default:acacia_tree", param2 = 12, prob = 127},
			},
		},
		flags = "place_center_x",
		rotation = "random",
	})

	-- Aspen tree and log

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.005,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest", "rainforest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/aspen_1.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.005,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/aspen_2.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.005,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/aspen_3.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.005,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/aspen_4.mts",
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.0008,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = {
			size = {x = 3, y = 3, z = 1},
			data = {
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "air", prob = 0},
				{name = "default:aspen_tree", param2 = 12},
				{name = "default:aspen_tree", param2 = 12},
				{name = "default:aspen_tree", param2 = 12, prob = 127},
				{name = "flowers:mushroom_red", prob = 63},
				{name = "flowers:mushroom_brown", prob = 63},
				{name = "air", prob = 0},
			},
		},
		flags = "place_center_x",
		rotation = "random",
	})

	-- Large cactus

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:desert_sand"},
		sidelen = 16,
		noise_params = {
			offset = -0.0003,
			scale = 0.0009,
			spread = {x = 200, y = 200, z = 200},
			seed = 230,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert"},
		y_min = 5,
		y_max = 31000,
		schematic = minetest.get_modpath("default") .. "/schematics/large_cactus.mts",
		flags = "place_center_x",
		rotation = "random",
	})

	-- Cactus

	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:desert_sand"},
		sidelen = 16,
		noise_params = {
			offset = -0.0003,
			scale = 0.0009,
			spread = {x = 200, y = 200, z = 200},
			seed = 230,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert"},
		y_min = 5,
		y_max = 31000,
		decoration = "default:cactus",
		height = 2,
		height_max = 5,
	})

	-- Papyrus

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt"},
		sidelen = 16,
		noise_params = {
			offset = -0.3,
			scale = 0.7,
			spread = {x = 200, y = 200, z = 200},
			seed = 354,
			octaves = 3,
			persist = 0.7
		},
		biomes = {"savanna_shore"},
		y_min = 0,
		y_max = 0,
		schematic = minetest.get_modpath("default") .. "/schematics/papyrus.mts",
	})

	-- Bush

	minetest.register_decoration({
		deco_type = "schematic",
		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 = {"snowy_grassland", "grassland", "deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/bush.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt_with_snow"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 137,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"snowy_grassland", "grassland", "deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/bush1.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt_with_snow"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 137,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"snowy_grassland", "grassland", "deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/bush2.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass", "default:dirt_with_snow"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 137,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"snowy_grassland", "grassland", "deciduous_forest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/bush3.mts",
		flags = "place_center_x, place_center_z",
	})

	-- Acacia bush

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/acaciabush.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/acaciabush1.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/acaciabush2.mts",
		flags = "place_center_x, place_center_z",
	})
	
	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.001,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"savanna"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/acaciabush3.mts",
		flags = "place_center_x, place_center_z",
	})
	
	--jungle bush
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.01,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"rainforest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/junglebush.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.01,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"rainforest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/junglebush1.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.01,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"rainforest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/junglebush2.mts",
		flags = "place_center_x, place_center_z",
	})
	
		minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = -0.004,
			scale = 0.01,
			spread = {x = 100, y = 100, z = 100},
			seed = 90155,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"rainforest"},
		y_min = 1,
		y_max = 31000,
		schematic = minetest.get_modpath("nodebox_trees") .. "/schematics/junglebush3.mts",
		flags = "place_center_x, place_center_z",
	})

	-- Grasses

	register_grass_decoration(-0.03,  0.09,  5)
	register_grass_decoration(-0.015, 0.075, 4)
	register_grass_decoration(0,      0.06,  3)
	register_grass_decoration(0.015,  0.045, 2)
	register_grass_decoration(0.03,   0.03,  1)

	-- Dry grasses

	register_dry_grass_decoration(0.01, 0.05,  5)
	register_dry_grass_decoration(0.03, 0.03,  4)
	register_dry_grass_decoration(0.05, 0.01,  3)
	register_dry_grass_decoration(0.07, -0.01, 2)
	register_dry_grass_decoration(0.09, -0.03, 1)

	-- Junglegrass

	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:dirt_with_grass"},
		sidelen = 80,
		fill_ratio = 0.1,
		biomes = {"rainforest"},
		y_min = 1,
		y_max = 31000,
		decoration = "default:junglegrass",
	})

	-- Dry shrub

	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:desert_sand",
			"default:sand", "default:silver_sand"},
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.02,
			spread = {x = 200, y = 200, z = 200},
			seed = 329,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert", "sandstone_desert", "cold_desert"},
		y_min = 2,
		y_max = 31000,
		decoration = "default:dry_shrub",
	})

	-- Coral reef

	minetest.register_decoration({
		deco_type = "schematic",
		place_on = {"default:sand"},
		noise_params = {
			offset = -0.1,
			scale = 0.1,
			spread = {x = 200, y = 200, z = 200},
			seed = 7013,
			octaves = 3,
			persist = 1,
		},
		biomes = {
			"desert_ocean",
			"savanna_ocean",
			"rainforest_ocean",
		},
		y_min = -8,
		y_max = -2,
		schematic = minetest.get_modpath("default") .. "/schematics/corals.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})