many worldgen mods and gonna try technic now
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local modname = minetest.get_current_modname()
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local S = minetest.get_translator(modname)
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local sound
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if df_dependencies.sound_leaves then
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sound = df_dependencies.sound_leaves()
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end
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local get_node_box = function(connector_thickness)
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return {
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type = "connected",
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--fixed = {-hub_thickness,-hub_thickness,-hub_thickness,hub_thickness,hub_thickness,hub_thickness},
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connect_top = {-connector_thickness, 0, -connector_thickness, connector_thickness, 0.5, connector_thickness},
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connect_bottom = {-connector_thickness, -0.5, -connector_thickness, connector_thickness, 0, connector_thickness},
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connect_back = {-connector_thickness, -connector_thickness, 0, connector_thickness, connector_thickness, 0.5},
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connect_right = {0, -connector_thickness, -connector_thickness, 0.5, connector_thickness, connector_thickness},
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connect_front = {-connector_thickness, -connector_thickness, -0.5, connector_thickness, connector_thickness, 0},
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connect_left = {-0.5, -connector_thickness, -connector_thickness, 0, connector_thickness, connector_thickness},
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disconnected = {-connector_thickness, -connector_thickness, -connector_thickness, connector_thickness, connector_thickness, connector_thickness},
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}
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end
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local anchor_groups = {"group:soil", "group:stone", "group:tree", "group:wood", "group:webbing", "group:solid"}
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local in_anchor_group = function(name)
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for _, group in pairs(anchor_groups) do
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if minetest.get_item_group(name, string.sub(group, 7)) then
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return true
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end
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end
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if name == "ignore" then
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return true
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end
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end
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local cardinal_directions = {
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{x=1,y=0,z=0},
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{x=-1,y=0,z=0},
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{x=0,y=1,z=0},
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{x=0,y=-1,z=0},
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{x=0,y=0,z=1},
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{x=0,y=0,z=-1}
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}
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local cardinal_planes = {
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{3,5},
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{3,5},
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{1,5},
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{1,5},
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{1,3},
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{1,3},
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}
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local insert_if_not_in_hashtable = function(pos, insert_into, if_not_in)
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local hash = minetest.hash_node_position(pos)
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if if_not_in[hash] then
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return
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end
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table.insert(insert_into, pos)
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end
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-- flood fill through the web to get all web and anchor locations
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local get_web_nodes = function(pos, webs, anchors)
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local to_check = {}
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table.insert(to_check, pos)
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while next(to_check) ~= nil do
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local check_pos = table.remove(to_check)
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local check_node = minetest.get_node(check_pos)
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if minetest.get_item_group(check_node.name, "webbing") > 0 then
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webs[minetest.hash_node_position(check_pos)] = true
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for _, dir in pairs(cardinal_directions) do
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insert_if_not_in_hashtable(vector.add(check_pos, dir), to_check, webs)
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end
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elseif in_anchor_group(check_node.name) then
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anchors[minetest.hash_node_position(check_pos)] = true
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end
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end
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end
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local web_line = function(pos, dir, distance)
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local anchored
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local web_spine = {}
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for i = 0, distance do
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local web_pos = vector.add(pos, vector.multiply(dir,i))
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local node_name = minetest.get_node(web_pos).name
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if node_name == "air" or node_name == "big_webs:webbing" then
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table.insert(web_spine, web_pos)
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elseif in_anchor_group(node_name) then
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anchored=true
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break
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else
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anchored=false
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break
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end
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end
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if anchored then
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for _, web_pos in pairs(web_spine) do
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if math.random() < 0.9 then
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minetest.set_node(web_pos, {name="big_webs:webbing"})
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end
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end
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return web_spine
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end
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return nil
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end
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local generate_web = function(pos)
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local dir_choice = math.random(1, 6)
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local dir = cardinal_directions[dir_choice]
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local web_spine = web_line(pos, dir, 30)
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if web_spine then
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local dir2 = cardinal_directions[cardinal_planes[dir_choice][math.random(1, 2)]]
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local dir2_opposite = vector.multiply(dir2, -1)
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for _, web_pos in pairs(web_spine) do
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web_line(web_pos, dir2, 15)
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web_line(web_pos, dir2_opposite, 15)
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end
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end
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end
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minetest.register_node("big_webs:webbing", {
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description = S("Giant Cave Spider Webbing"),
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_doc_items_longdesc = S("Thick ropes of sticky, springy silk, strung between cavern walls in hopes of catching bats and even larger beasts."),
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_doc_items_usagehelp = S("Webbing can be collected and re-strung elsewhere to aid in climbing. It absorbs all falling damage when you land on it."),
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tiles = {
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{name="big_webs.png"},
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},
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use_texture_alpha = "blend",
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connects_to = anchor_groups,
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connect_sides = { "top", "bottom", "front", "left", "back", "right" },
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drawtype = "nodebox",
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node_box = get_node_box(0.0625),
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collision_box = get_node_box(0.0625),
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inventory_image = "big_webs_item.png",
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wield_image = "big_webs_item.png",
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paramtype = "light",
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is_ground_content = false,
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climbable = true,
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groups = {snappy = 2, choppy = 2, webbing = 1, shearsy = 1, swordy=1, flammable=1, destroy_by_lava_flow=1, fall_damage_add_percent=-100, bouncy=20},
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sounds = sound,
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on_construct = function(pos)
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minetest.get_node_timer(pos):start(30)
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end,
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on_destruct = function(pos)
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for _, dir in pairs(cardinal_directions) do
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local neighbor_pos = vector.add(pos, dir)
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if minetest.get_item_group(minetest.get_node(neighbor_pos).name, "webbing") > 0 then
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minetest.get_node_timer(neighbor_pos):start(30)
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end
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end
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minetest.get_node_timer(pos):stop()
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end,
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on_timer = function(pos, elapsed)
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local webs = {}
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local anchors = {}
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get_web_nodes(pos, webs, anchors)
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local first_anchor = next(anchors)
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for hash, _ in pairs(webs) do
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local web_pos = minetest.get_position_from_hash(hash)
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if first_anchor == nil then
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-- unsupported web
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minetest.set_node(web_pos, {name="air"})
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minetest.item_drop(ItemStack("big_webs:webbing"), nil, web_pos)
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end
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minetest.get_node_timer(web_pos):stop() -- no need to recheck
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end
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end,
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_mcl_blast_resistance = 1.0,
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_mcl_hardness = 0.5,
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})
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minetest.register_node("big_webs:web_egg", {
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description = S("Giant Cave Spider Web Generator"),
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tiles = {
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{name="big_webs.png"},
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},
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use_texture_alpha = "blend",
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connects_to = anchor_groups,
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connect_sides = { "top", "bottom", "front", "left", "back", "right" },
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drawtype = "nodebox",
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node_box = get_node_box(0.0625),
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collision_box = get_node_box(0.0625),
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inventory_image = "big_webs_item.png",
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wield_image = "big_webs_item.png",
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paramtype = "light",
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is_ground_content = false,
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climbable = true,
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floodable = true,
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groups = {snappy = 2, choppy = 2, webbing = 1, flammable=1, fall_damage_add_percent=-100, bouncy=20},
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sounds = sound,
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on_construct = function(pos)
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minetest.get_node_timer(pos):start(1)
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end,
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on_timer = function(pos, elapsed)
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minetest.set_node(pos, {name="air"})
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generate_web(pos)
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end,
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_mcl_blast_resistance = 1.0,
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_mcl_hardness = 0.5,
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})
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