many worldgen mods and gonna try technic now

mods/dfcaverns/subterrane/defaults.lua

@@ -0,0 +1,67 @@
+subterrane.defaults = {
+	--y_max = Must be provided by the user
+	--y_min = Must be provided by the user
+	cave_threshold = 0.5,
+	warren_region_threshold = 0.25,
+	warren_region_variability_threshold = 0.25,
+	warren_threshold = 0.25,
+	boundary_blend_range = 128,
+	perlin_cave = {
+		offset = 0,
+		scale = 1,
+		spread = {x=256, y=256, z=256},
+		seed = -400000000089,
+		octaves = 3,
+		persist = 0.67
+	},
+	perlin_wave = {
+		offset = 0,
+		scale = 1,
+		spread = {x=512, y=256, z=512}, -- squashed 2:1
+		seed = 59033,
+		octaves = 6,
+		persist = 0.63
+	},
+	perlin_warren_area = {
+		offset = 0,
+		scale = 1,
+		spread = {x=1024, y=128, z=1024},
+		seed = -12554445,
+		octaves = 2,
+		persist = 0.67
+	},
+	perlin_warrens = {
+		offset = 0,
+		scale = 1,
+		spread = {x=32, y=12, z=32},
+		seed = 600089,
+		octaves = 3,
+		persist = 0.67
+	},
+	--solidify_lava =
+	columns = {
+		maximum_radius = 10,
+		minimum_radius = 4,
+		node = "default:stone",
+		weight = 0.25,
+		maximum_count = 50,
+		minimum_count = 0,
+	},
+	--double_frequency = -- when set to true, uses the absolute value of the cavern field to determine where to place caverns instead. This effectively doubles the number of large non-connected caverns.
+	--decorate = -- optional, a function that is given a table of indices and a variety of other mapgen information so that it can place custom decorations on floors and ceilings.
+}
+
+local recurse_defaults
+recurse_defaults = function(target_table, default_table)
+	for k, v in pairs(default_table) do
+		if target_table[k] == nil then
+			target_table[k] = v -- TODO: deep copy if v is a table.
+		elseif type(target_table[k]) == "table" then
+			recurse_defaults(target_table[k], v)
+		end
+	end
+end
+
+subterrane.set_defaults = function(cave_layer_def)
+	recurse_defaults(cave_layer_def, subterrane.defaults)
+end