-- mods/australia/biome_arnhem_land.lua

minetest.register_biome({
	name = "arnhem_land",
	--node_dust = "",
	node_top = "default:dirt_with_grass",
	depth_top = 1,
	node_filler = "default:dirt",
	depth_filler = 3,
	--node_stone = "",
	--node_water_top = "",
	--depth_water_top = ,
	--node_water = "",
	node_river_water = "australia:muddy_river_water_source",
	y_min = 4,
	y_max = 35,
	heat_point = 60,
	humidity_point = 80,
})



--
-- Register ores
--

-- All mapgens except singlenode
-- Blob ore first to avoid other ores inside blobs

-- Uranium from Technic modpack: technic_worldgen mod
if minetest.get_modpath("technic_worldgen") then
	minetest.register_ore({
		ore_type        = "scatter",
		ore             = "technic:mineral_uranium",
		wherein         = "default:stone",
		clust_scarcity  = 24 * 24 * 24,
		clust_num_ores  = 4,
		clust_size      = 3,
		biomes          = {"arnhem_land"},
		y_min           = -64,
		y_max           = 35,
		noise_params    = {
			offset = 0,
			scale = 1,
			spread = {x = 100, y = 100, z = 100},
			seed = 420,
			octaves = 3,
			persist = 0.7
			},
		noise_threshold = 0.6,
	})
end



--
-- Decorations
--

local function register_grass_decoration(offset, scale, length)
	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = offset,
			scale = scale,
			spread = {x = 200, y = 200, z = 200},
			seed = 329,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"arnhem_land"},
		y_min = 4,
		y_max = 35,
		decoration = "default:grass_"..length,
	})
end

	-- 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)



--
-- Trees
--

	-- Darwin Woollybutt
aus.schematics.darwin_woollybutt_tree = {}
local max_r = 4
local ht = 5
local fruit = nil
local limbs = nil
local tree = "australia:darwin_woollybutt_tree"
local leaves = "australia:darwin_woollybutt_leaves"
for r = 3,max_r do
	local schem = aus.generate_tree_schematic(6, {x=r, y=ht, z=r}, tree, leaves, fruit, limbs)
	push(aus.schematics.darwin_woollybutt_tree, schem)
	minetest.register_decoration({
		deco_type = "schematic",
		sidelen = 80,
		place_on = {"default:dirt_with_grass"},
		y_min = 8,
		y_max = 35,
		fill_ratio = (max_r-r+1)/10000,
		biomes = {"arnhem_land"},
		schematic = schem,
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})
end

	-- River Oak
aus.schematics.river_oak_small_tree = {}
local max_r = 4
local ht = 6
local fruit = nil
local limbs = false
local tree = "australia:river_oak_tree"
local leaves = "australia:river_oak_leaves"
for r = 3,max_r do
	local schem = aus.generate_tree_schematic(2, {x=r, y=ht, z=r}, tree, leaves, fruit, limbs)
	push(aus.schematics.river_oak_small_tree, schem)
	minetest.register_decoration({
		deco_type = "schematic",
		sidelen = 80,
		place_on = {"default:dirt_with_grass"},
		y_min = 12,
		y_max = 35,
		fill_ratio = (max_r-r+1)/12000,
		biomes = {"arnhem_land"},
		schematic = schem,
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})
end