many worldgen mods and gonna try technic now

mods/ebiomes/rereg.lua

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+-- Code borrowed from Ethereal by TenPlus1
+
+local old_biomes = {}
+local old_decor = {}
+
+
+-- backup registered biome data
+for key, def in pairs(core.registered_biomes) do
+	old_biomes[key] = def
+end
+
+for key, def in pairs(core.registered_decorations) do
+	old_decor[key] = def
+end
+
+
+-- clear current biome data
+core.clear_registered_biomes()
+core.clear_registered_decorations()
+-- core.clear_registered_ores()
+
+
+-- create list of default biomes to remove
+local def_biomes = {
+	["snowy_grassland"] = 1,
+}
+
+
+-- only re-register biomes that aren't on the list
+for key, def in pairs(old_biomes) do
+
+	if not def_biomes[key] then
+		core.register_biome(def)
+	end
+end
+
+
+-- loop through decorations
+for key, def in pairs(old_decor) do
+
+	local can_add = true
+	local new_biomes = {}
+
+	if type(def.biomes) == "table" then
+
+		-- loop through decoration biomes, only re-add one's not on above list
+		for num, bio in pairs(def.biomes) do
+
+			if not def_biomes[bio] then
+				table.insert(new_biomes, bio)
+			end
+		end
+
+		-- if no biomes are left on new list, do not re-add decoration
+		if #new_biomes == 0 then
+			can_add = false
+		end
+
+	elseif type(def.biomes) == "string" then
+
+		if def_biomes[def.biomes] then
+			can_add = false
+		else
+			new_biomes = {def.biomes} -- convert to table
+		end
+
+	elseif not def.biomes then
+		new_biomes = nil -- keep it nil for re-adding
+	end
+
+	if can_add == true then
+
+		def.biomes = new_biomes
+
+		core.register_decoration(def)
+	end
+end
+
+
+--Snowy grassland new
+
+	-- Pine bush
+
+	-- Snowy grassland
+
+	core.register_biome({
+		name = "snowy_grassland",
+		node_dust = "default:snow",
+		node_top = "default:dirt_with_snow",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 1,
+		node_riverbed = "default:sand",
+		depth_riverbed = 2,
+		node_dungeon = "default:cobble",
+		node_dungeon_alt = "default:mossycobble",
+		node_dungeon_stair = "stairs:stair_cobble",
+		y_max = 31000,
+		y_min = 4,
+		heat_point = 20,
+		humidity_point = 35,
+	})
+
+	core.register_biome({
+		name = "snowy_grassland_ocean",
+		node_dust = "default:snow",
+		node_top = "default:sand",
+		depth_top = 1,
+		node_filler = "default:sand",
+		depth_filler = 3,
+		node_riverbed = "default:sand",
+		depth_riverbed = 2,
+		node_cave_liquid = "default:water_source",
+		node_dungeon = "default:cobble",
+		node_dungeon_alt = "default:mossycobble",
+		node_dungeon_stair = "stairs:stair_cobble",
+		vertical_blend = 1,
+		y_max = 3,
+		y_min = -255,
+		heat_point = 20,
+		humidity_point = 35,
+	})
+
+	core.register_biome({
+		name = "snowy_grassland_under",
+		node_cave_liquid = {"default:water_source", "default:lava_source"},
+		node_dungeon = "default:cobble",
+		node_dungeon_alt = "default:mossycobble",
+		node_dungeon_stair = "stairs:stair_cobble",
+		y_max = -256,
+		y_min = -400,
+		heat_point = 20,
+		humidity_point = 35,
+	})
+
+	-- Dirt
+
+	core.register_ore({
+		ore_type        = "blob",
+		ore             = "default:dirt",
+		wherein         = {"default:stone"},
+		clust_scarcity  = 16 * 16 * 16,
+		clust_size      = 5,
+		y_max           = 31000,
+		y_min           = -31,
+		noise_threshold = 0.0,
+		noise_params    = {
+			offset = 0.5,
+			scale = 0.2,
+			spread = {x = 5, y = 5, z = 5},
+			seed = 17676,
+			octaves = 1,
+			persist = 0.0
+		},
+		-- Only where default:dirt is present as surface material
+		biomes = {"snowy_grassland"}
+	})
+
+    -- Pine bush
+
+	core.register_decoration({
+		name = "ebiomes:pine_bush_sg",
+		deco_type = "schematic",
+		place_on = {"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"},
+		y_max = 31000,
+		y_min = 4,
+		schematic = core.get_modpath("default") .. "/schematics/pine_bush.mts",
+		flags = "place_center_x, place_center_z",
+	})