use noise instead of fill_ratio for distribution

mods/MAPGEN/mcl_geodes/init.lua

@@ -51,7 +51,7 @@ local function makegeode(pos,pr)
 
 	for _,v in pairs(calcite) do
 		for _,vv in pairs(minetest.find_nodes_in_area(vector.offset(v,-1,-1,-1),vector.offset(v,1,1,1),{"group:material_stone"})) do
-			set_node_no_bedrock(vv,{name="mcl_deepslate:deepslate"}) --Replace with smooth basalt when available
+			set_node_no_bedrock(vv,{name="mcl_blackstone:basalt_smooth"})
 		end
 	end
 
@@ -66,7 +66,15 @@ end
 
 mcl_structures.register_structure("geode",{
 	place_on = {"mcl_core:stone"},
-	fill_ratio = 0.0001,
+	noise_params = {
+		offset = 0,
+		scale = 0.00022,
+		spread = {x = 250, y = 250, z = 250},
+		seed = 7894353,
+		octaves = 3,
+		persist = 0.001,
+		flags = "absvalue",
+	},
 	flags = "place_center_x, place_center_z, force_placement",
 	biomes = ocean_biomes,
 	y_max = -24,
@@ -75,6 +83,6 @@ mcl_structures.register_structure("geode",{
 	y_offset = function(pr) return pr:next(-4,-2) end,
 	place_func = function(pos,def,pr)
 		local p = vector.new(pos.x + pr:next(-30,30),pos.y,pos.z + pr:next(-30,30))
-		return makegeode(pos,pr)
+		return makegeode(p,pr)
 	end
 })

mods/MAPGEN/mcl_shipwrecks/init.lua

@@ -158,8 +158,16 @@ mcl_structures.register_structure("shipwreck",{
 	place_on = {"group:sand","mcl_core:gravel"},
 	spawn_by = {"group:water"},
 	num_spawn_by = 4,
-	fill_ratio = 0.00002,
-	flags = "place_center_x, place_center_z, force_placement",
+	noise_params = {
+		offset = 0,
+		scale = 0.000022,
+		spread = {x = 250, y = 250, z = 250},
+		seed = 3,
+		octaves = 3,
+		persist = 0.001,
+		flags = "absvalue",
+	},
+	flags = "force_placement",
 	biomes = ocean_biomes,
 	y_max = water_level-4,
 	y_min = mcl_vars.mg_overworld_min,

mods/MAPGEN/mcl_structures/api.lua

@@ -43,7 +43,7 @@ function mcl_structures.register_structure(name,def,nospawn) --nospawn means it
 			num_spawn_by = def.num_spawn_by,
 			sidelen = 80,
 			fill_ratio = def.fill_ratio,
-			noise = def.noise,
+			noise_params = def.noise_params,
 			flags = flags,
 			biomes = def.biomes,
 			y_max = def.y_max,

mods/MAPGEN/mcl_surface_pools/init.lua

@@ -17,7 +17,7 @@ local function set_node_no_bedrock(pos,node)
 end
 
 local function airtower(pos)
-	for i=0,35 do
+	for i=0,55 do
 		set_node_no_bedrock(vector.offset(pos,0,i,0),{name="air"})
 	end
 end
@@ -69,7 +69,15 @@ end
 
 mcl_structures.register_structure("lavapool",{
 	place_on = {"group:sand", "group:dirt", "group:stone"},
-	fill_ratio = 0.000015,
+	noise_params = {
+		offset = 0,
+		scale = 0.0000022,
+		spread = {x = 250, y = 250, z = 250},
+		seed = 78375213,
+		octaves = 3,
+		persist = 0.001,
+		flags = "absvalue",
+	},
 	flags = "place_center_x, place_center_z, force_placement",
 	y_max = mcl_vars.mg_overworld_max,
 	y_min = minetest.get_mapgen_setting("water_level"),
@@ -80,7 +88,15 @@ mcl_structures.register_structure("lavapool",{
 
 mcl_structures.register_structure("water_lake",{
 	place_on = {"group:dirt","group:stone"},
-	fill_ratio = 0.000052,
+	noise_params = {
+		offset = 0,
+		scale = 0.000032,
+		spread = {x = 250, y = 250, z = 250},
+		seed = 734341353,
+		octaves = 3,
+		persist = 0.001,
+		flags = "absvalue",
+	},
 	flags = "place_center_x, place_center_z, force_placement",
 	y_max = mcl_vars.mg_overworld_max,
 	y_min = minetest.get_mapgen_setting("water_level"),