Move noise indicator into separate file

mods/MAPGEN/mcl_mapgen_core/structures.lua

@@ -268,30 +268,6 @@ local function spawn_spikes_in_v6(p, nn, pr)
 end
 
 local function generate_structures(vm_context)
-
-local levels = {
-	[-9] = "black",
-	[-8] = "brown",
-	[-7] = "brown",
-	[-6] = "gray",
-	[-5] = "gray",
-	[-4] = "red",
-	[-3] = "orange",
-	[-2] = "purple",
-	[-1] = "magenta",
-	[0] = "pink",
-	[1] = "yellow",
-	[2] = "green",
-	[3] = "lime",
-	[4] = "blue",
-	[5] = "cyan",
-	[6] = "light_blue",
-	[7] = "silver",
-	[8] = "silver",
-	[9] = "white",
-	}
-
-	-- local pr = PcgRandom(vm_context.blockseed)
 	local pr = PcgRandom(vm_context.chunkseed)
 	-- chunk_has_desert_struct = false
 	-- chunk_has_desert_temple = false
@@ -304,20 +280,6 @@ local levels = {
 	local DIVLEN = 5
 	for x0 = minp.x, maxp.x, DIVLEN do for z0 = minp.z, maxp.z, DIVLEN do
 		-- Determine amount from perlin noise
-		local noise = perlin_structures:get_2d({x=x0, y=z0})
-		local amount
-		if noise < 0 then
-			amount = math_max(math_ceil(noise * 9), -9)
-		else
-			amount = math_min(math_floor(noise * 9), 9)
-		end
-		-- local amount = math_floor(perlin_structures:get_2d({x=x0, y=z0}) * 9)
-
-		local y1 = maxp.y - 9 + amount
-		for x1 = x0, x0 + DIVLEN - 1, 1 do for z1 = z0, z0 + DIVLEN - 1, 1 do
-			minetest.set_node({x=x1, y=y1, z=z1}, {name = "mcl_core:glass_"..levels[amount]})
-		end end
-
 		-- Find random positions based on this random
 		local p, ground_y, nn
 		for i = 0, 24 do

mods/MAPGEN/mcl_structures/desert_temple.lua

@@ -121,11 +121,12 @@ mcl_structures.register_structure({
 		deco_type = "simple",
 		place_on = node_list,
 		flags = "all_floors",
-		fill_ratio = 0.00003,
+		--fill_ratio = 0.00003,
+		fill_ratio = 0.003,
 		y_min = 3,
 		y_max = mcl_mapgen.overworld.max,
 		height = 1,
-		biomes = {
+		biomes = not mcl_mapgen.v6 and {
 			"ColdTaiga_beach",
 			"ColdTaiga_beach_water",
 			"Desert",
@@ -146,6 +147,7 @@ mcl_structures.register_structure({
 	on_finished_chunk = function(minp, maxp, seed, vm_context, pos_list)
 		local a = seed % 14
 		local b = (math.floor(seed / 39) + 4) % 12
+		minetest.chat_send_all("seed=" .. tostring(seed) .. ", a=" .. tostring(a) .. ", b=" ..tostring(b))
 		if a ~= b then return end
 		local pos = pos_list[1]
 		if #pos_list > 1 then

mods/MAPGEN/mcl_structures/init.lua

@@ -17,6 +17,8 @@ local use_process_mapgen_chunk = false
 local on_finished_block_callbacks = {}
 local on_finished_chunk_callbacks = {}
 
+mcl_structures.perlin_noise = minetest.get_perlin(329, 3, 0.6, 100)
+
 function process_mapgen_block_lvm(vm_context)
 	local nodes = minetest.find_nodes_in_area(vm_context.minp, vm_context.maxp, {"group:struct"}, true)
 	for node_name, pos_list in pairs(nodes) do
@@ -70,7 +72,7 @@ function mcl_structures.register_structure(def)
 	local decoration_id
 	if decoration then
 		minetest.register_node(':' .. name, {
-			drawtype            = "airlike",
+			-- drawtype            = "airlike",
 			sunlight_propagates = true,
 			pointable           = false,
 			walkable            = false,

mods/MAPGEN/mcl_structures/noise_indicator.lua

@@ -0,0 +1,42 @@
+local levels = {
+	[-9] = "black",
+	[-8] = "brown",
+	[-7] = "brown",
+	[-6] = "gray",
+	[-5] = "gray",
+	[-4] = "red",
+	[-3] = "orange",
+	[-2] = "purple",
+	[-1] = "magenta",
+	[0] = "pink",
+	[1] = "yellow",
+	[2] = "green",
+	[3] = "lime",
+	[4] = "blue",
+	[5] = "cyan",
+	[6] = "light_blue",
+	[7] = "silver",
+	[8] = "silver",
+	[9] = "white",
+}
+
+local math_min, math_max = math.min, math.max
+local math_floor, math_ceil = math.floor, math.ceil
+
+mcl_mapgen.register_mapgen(function(minp, maxp, seed, vm_context)
+	mcl_structures.perlin_noise = mcl_structures.perlin_noise or minetest.get_perlin(329, 3, 0.6, 100)
+	local perlin_noise = mcl_structures.perlin_noise
+	for x0 = minp.x, maxp.x do
+		for z0 = minp.z, maxp.z do
+			local current_noise_level = perlin_noise:get_2d({x=x0, y=z0})
+			local amount
+			if current_noise_level < 0 then
+				amount = math_max(math_ceil(current_noise_level * 9), -9)
+			else
+				amount = math_min(math_floor(current_noise_level * 9), 9)
+			end
+			local y0 = maxp.y - 9 + amount
+			minetest.set_node({x=x0, y=y0, z=z0}, {name = "mcl_core:glass_"..levels[amount]})
+		end
+	end
+end, -1)

mods/MAPGEN/mcl_structures/structures.lua

@@ -1,5 +1,9 @@
 local modname = minetest.get_current_modname()
 local modpath = minetest.get_modpath(modname)
 
+if not mcl_mapgen.singlenode then
 	dofile(modpath .. "/desert_temple.lua")
 	dofile(modpath .. "/stronghold.lua")
+
+	dofile(modpath .. "/noise_indicator.lua")
+end