minetest.register_decoration({
  deco_type = "schematic",
  place_on = {"pyutest_core:grass_block"},
  sidelen = 16,
  fill_ratio = 0.00004,
  biomes = {"grassland"},
  y_max = PyuTestCore_BiomeTops.grassland,
  y_min = 1,
  schematic = PyuTestCore.get_schem_path("hut"),
  rotation = "random",
  flags = "place_center_x, place_center_z"
})

minetest.register_decoration({
  deco_type = "schematic",
  place_on = {"pyutest_core:snow_block"},
  sidelen = 16,
  fill_ratio = 0.00004,
  biomes = {"frozen_plains"},
  y_max = PyuTestCore_BiomeTops.frozen_plains,
  y_min = 1,
  schematic = PyuTestCore.get_schem_path("igloo"),
  rotation = "random",
  flags = "place_center_x, place_center_z"
})

minetest.register_decoration({
  deco_type = "schematic",
  place_on = {"pyutest_core:snow_block"},
  sidelen = 16,
  fill_ratio = 0.00007,
  biomes = {"frozen_plains"},
  y_max = PyuTestCore_BiomeTops.frozen_plains,
  y_min = 1,
  schematic = PyuTestCore.get_schem_path("snowycamp"),
  rotation = "random",
  flags = "place_center_x, place_center_z"
})

minetest.register_decoration({
  deco_type = "schematic",
  place_on = {"pyutest_core:sand_block"},
  sidelen = 16,
  fill_ratio = 0.00006,
  biomes = {"desert"},
  y_max = PyuTestCore_BiomeTops.desert,
  y_min = 1,
  schematic = PyuTestCore.get_schem_path("desertwell"),
  rotation = "random",
  flags = "place_center_x, place_center_z"
})

local rblocks = minetest.registered_nodes
local blocks = {}
for k, _ in pairs(rblocks) do
  local m = k:find("_block")
  if m ~= nil then
    table.insert(blocks, k)
  end
end

minetest.register_decoration({
  deco_type = "simple",
  sidelen = 16,
  fill_ratio = 0.0003,
  place_on = blocks,
  biomes = minetest.registered_biomes,
  y_max = PyuTestCore_BiomeTops.mountains,
  y_min = PyuTestCore_WorldBottom,
  decoration = {
    "pyutest_core:trash_lootbox",
    "pyutest_core:resource_lootbox",
    "pyutest_core:griefer_lootbox",
    "pyutest_core:liquid_sources_lootbox",
    "pyutest_core:lighting_lootbox",
  }
})

minetest.register_decoration({
  deco_type = "schematic",
  sidelen = 16,
  fill_ratio = 0.0004,
  schematic = PyuTestCore.get_schem_path("icespike"),
  place_on = {"pyutest_core:ice_block"},
  biomes = {
    "ice_spikes",
  },
  y_max = PyuTestCore_BiomeTops.ice_spikes,
  y_min = PyuTestCore_WorldBottom,
  flags = "place_center_x, place_center_z",
})

minetest.register_decoration({
  deco_type = "schematic",
  sidelen = 16,
  fill_ratio = 0.0001,
  schematic = PyuTestCore.get_schem_path("obsidian-mound"),
  place_on = {"pyutest_core:mycelium_block"},
  biomes = {
    "mushroom_fields"
  },
  y_max = PyuTestCore_BiomeTops.mushroom_fields,
  y_min = PyuTestCore_WorldBottom,
  flags = "",
  place_offset_y = 1
})