Version MFF.

.github/workflows/luacheck.yml

@@ -1,11 +0,0 @@
-on: [push, pull_request]
-name: luacheck
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@master
-      - name: lint
-        uses: Roang-zero1/factorio-mod-luacheck@master
-        with:
-          luacheckrc_url: ""

.luacheckrc

@@ -1,25 +0,0 @@
-read_globals = {
-	"dump", "vector",
-	"table", "math", "PseudoRandom", "VoxelArea",
-	"stairs", "stairsplus", "skins", "treecapitator",
-	default = {
-		fields = {
-			player_attached = {
-				read_only = false,
-				other_fields = true
-			}
-		},
-		other_fields = true
-	},
-	minetest = {
-		fields = {
-			registered_nodes = {
-				read_only = false,
-				other_fields = true
-			}
-		},
-		other_fields = true
-	}
-}
-globals = {"snow"}
--- ignore = {"421", "423"}

changelog.txt

@@ -1,10 +1,5 @@
 CHANGELOG:
 ------------
-Version 4.0
-
-	Snow mod is now a complimentary mod to the default snow found in minetest.
-	
-	HybridDog's large changes, fixes and more (see commit log).
 
 Version 3.2
 

depends.txt

@@ -1,6 +1,4 @@
 default
 flowers?
-stairs?
 moreblocks?
-skins?
-treecapitator?
+watershed?

init.lua

@@ -47,35 +47,43 @@ http://github.com/Splizard/minetest-mod-snow/
 --  Until something else can be figured out, use paramat's "Snowdrift" mod instead.
 -- dofile(modpath.."/falling_snow.lua")
 
-local load_time_start = minetest.get_us_time()
-
-
 -- Original init.lua File Broken into Smaller Files
-local srcpath = minetest.get_modpath"snow".."/src/"
-dofile(srcpath.."abms.lua")
-dofile(srcpath.."aliases.lua")
-dofile(srcpath.."crafting.lua")
+local modpath = minetest.get_modpath("snow")
+dofile(modpath.."/src/abms.lua")
+dofile(modpath.."/src/aliases.lua")
+dofile(modpath.."/src/crafting.lua")
 
 
 -- The formspec menu didn't work when util.lua was the very first "dofile" so I moved
 -- it and all the other original "dofiles", in order, to the bottom of the list. ~ LazyJ
 -- Minetest would crash if the mapgen was called upon before the rest of other snow lua files so
 -- I put it lower on the list and that seems to do the trick. ~ LazyJ
-dofile(srcpath.."util.lua")
-dofile(srcpath.."snowball.lua")
+dofile(modpath.."/src/util.lua")
+dofile(modpath.."/src/snowball.lua")
 -- To get Xmas tree saplings, the "christmas_content", true or false, in "util.lua" has to be determined first.
 -- That means "nodes.lua", where the saplings are controlled, has to come after "util.lua". ~ LazyJ
-dofile(srcpath.."nodes.lua")
-dofile(srcpath.."stairs.lua")
-dofile(srcpath.."mapgen.lua")
-dofile(srcpath.."sled.lua")
-dofile(srcpath.."falling_snow.lua")
+dofile(modpath.."/src/nodes.lua")
+dofile(modpath.."/src/basic_stairs_slabs.lua")
+-- dofile(modpath.."/src/mapgen.lua")
+dofile(modpath.."/src/sled.lua")
+-- dofile(modpath.."/src/falling_snow.lua")
 
 
+
+-- Check for "MoreBlocks". If not found, skip this next "dofile".
+
+if rawget(_G, "stairsplus")
+and minetest.get_modpath("moreblocks") then
+
+	dofile(modpath.."/src/stairsplus.lua")
+
+end
+
 local is_uneven
 --This function places snow checking at the same time for snow level and increasing as needed.
 --This also takes into account sourrounding snow and makes snow even.
-function snow.place(pos, disablesound)
+function snow.place(pos)
+	if pos.y < -19000 then return end -- Don't put anything in the nether!
 	local node = minetest.get_node_or_nil(pos)
 
 	--Oops, maybe there is no node?
@@ -89,23 +97,17 @@ function snow.place(pos, disablesound)
 		if level < 63 then
 			if minetest.get_item_group(minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name, "leafdecay") == 0
 			and not is_uneven(pos) then
-				if not disablesound then
 				minetest.sound_play("default_snow_footstep", {pos=pos})
-				end
 				minetest.add_node_level(pos, 7)
 			end
 		elseif level == 63 then
 			local p = minetest.find_node_near(pos, 10, "default:dirt_with_grass")
 			if p
 			and minetest.get_node_light(p, 0.5) == 15 then
-				if not disablesound then
 				minetest.sound_play("default_grass_footstep", {pos=pos})
-				end
 				minetest.place_node({x=pos.x, y=pos.y+1, z=pos.z}, {name="default:snow"})
 			else
-				if not disablesound then
 				minetest.sound_play("default_snow_footstep", {pos=pos})
-				end
 				minetest.add_node(pos, {name="default:snowblock"})
 			end
 		end
@@ -117,7 +119,7 @@ function snow.place(pos, disablesound)
 		or drawtype == "allfaces_optional" then
 			pos.y = pos.y+1
 			local sound = data.sounds
-			if sound and not disablesound then
+			if sound then
 				sound = sound.footstep
 				if sound then
 					minetest.sound_play(sound.name, {pos=pos, gain=sound.gain})
@@ -196,12 +198,3 @@ snow.register_on_configuring(function(name, v)
 		end
 	end
 end)
-
-
-local time = (minetest.get_us_time() - load_time_start) / 1000000
-local msg = "[snow] loaded after ca. " .. time .. " seconds."
-if time > 0.01 then
-	print(msg)
-else
-	minetest.log("info", msg)
-end

license.txt

@@ -1,40 +1,3 @@
-License of media (snowdrift are from paramat)
----------------------------
-
-Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
-
-You are free to:
-Share — copy and redistribute the material in any medium or format.
-Adapt — remix, transform, and build upon the material for any purpose, even commercially.
-The licensor cannot revoke these freedoms as long as you follow the license terms.
-
-Under the following terms:
-
-Attribution — You must give appropriate credit, provide a link to the license, and
-indicate if changes were made. You may do so in any reasonable manner, but not in any way
-that suggests the licensor endorses you or your use.
-
-ShareAlike — If you remix, transform, or build upon the material, you must distribute
-your contributions under the same license as the original.
-
-No additional restrictions — You may not apply legal terms or technological measures that
-legally restrict others from doing anything the license permits.
-
-Notices:
-
-You do not have to comply with the license for elements of the material in the public
-domain or where your use is permitted by an applicable exception or limitation.
-No warranties are given. The license may not give you all of the permissions necessary
-for your intended use. For example, other rights such as publicity, privacy, or moral
-rights may limit how you use the material.
-
-For more details:
-http://creativecommons.org/licenses/by-sa/3.0/
-
-
-License of source code and other textures.
-----------------------
-
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 

mod.conf

@@ -1 +0,0 @@
-name = snow

readme.txt

@@ -5,19 +5,21 @@
   ____) | | | | (_) \ V  V /  | |  | | (_) | (_| |
  |_____/|_| |_|\___/ \_/\_/   |_|  |_|\___/ \__,_|
 				
-					Version 4.0
+					Version 3.2
 				
-By Splizard, HybridDog and LazyJ.
+By Splizard and LazyJ.
 
-Minetest version:  0.4.16+
+Minetest version:  0.4.9
 Depends: default
-License:  GPL v3
+License:  GPL v2
 
 Complimentary Mods: 
 ---------------------
+*	"Snowdrift" by paramat
 *	"More Blocks" by Calinou (2014_05_11 or newer)
 *	"Skins" by Zeg9
 
+
 Install:
 
 Forum post: http://minetest.net/forum/viewtopic.php?id=2290
@@ -41,8 +43,26 @@ Place this folder in your minetest mods folder.
 	world's "world.mt" file:
 	load_mod_snow = true
 
+
+
+NOTICE
+While this mod is installed you may experience slower map loading while a snow biome is generated.
+
 USAGE:
 -------
+If you walk around a bit you will find snow biomes scattered around the world.
+
+There are nine biome types:
+* Normal
+* Icebergs
+* Icesheet
+* Broken icesheet
+* Icecave
+* Coast
+* Alpine
+* Snowy
+* Plain
+  
 Snow can be picked up and thrown as snowballs or stacked into snow blocks.
 Snow and ice melts when near warm blocks such as torches or igniters such as lava.
 Snow blocks freeze water source blocks around them.
@@ -66,21 +86,18 @@ Icy Snow:
 Snow	Ice
 Ice		Snow
 
+MAPGEN_V7:
+------------
+If you are using minetest 0.4.8 or the latest dev version of minetest you can choose to generate a v7 map.
+This option can be found when creating a new map from the menu.
+Snow Biomes has support for this though you might need a couple other biomes too otherwise you will only spawn snow.
+There are a couple of bugs and limitations with this such as no ice being generated at the moment.
+
 Config file:
 ------------
-You can change various settings from the advanced settings in Minetest.
-
-
-	* Go to the settings tab.
-	* Click on Advanced Settings.
-	* Click on Mods.
-	* Click on snow.
-	* Change stuff!
+After starting a game in minetest with snow mod, a config file will be placed in this folder that contains the various options for snow mod.
+As admin you can use the /snow command in-game to make various changes.
 
 UNINSTALL:
 ------------
 Simply delete the folder snow from the mods folder.
-
-
-TODO:
-— test if the fixed ground_y search works correctly at chunkcorners at ground level

settingtypes.txt

@@ -1,39 +0,0 @@
-#The gravity of thrown snowballs.
-snow_snowball_gravity (Snowball Gravity) float 0.91
-
-#How fast players throw snowballs.
-snow_snowball_velocity (Snowball Velocity) float 19
-
-#Enable/Disable sleds.
-snow_sleds (Enable Sleds) bool true
-
-#Enables falling snow.
-snow_enable_snowfall (Enable Snowfall) bool true
-
-#Reduces the amount of resources and fps used by snowfall.
-snow_lighter_snowfall (Use Light Snowfall) bool false
-
-#Enables debug output. Currently it only prints mgv6 info.
-snow_debug (Debug Mode) bool false
-
-#Disable this to remove christmas saplings from being found.
-snow_christmas_content (Enable Christmas Content) bool true
-
-#Enables smooth biome transitions.
-snow_smooth_biomes (Smooth Biome Transitions) bool true
-
-#The minumum height a snow biome will generate (mgv7)
-snow_min_height (Minumum Height for Snow Biomes) int 3
-
-#Disable this to stop snow from being smoothed.
-snow_smooth_snow (Multiple Snow Levels) bool true
-
-#mapgen rarity in %. Note that this and mapgen_size do not work right because
-#sinus instead of Gauss curve is used as estimation.
-snow_mapgen_rarity (Snow Biome Rarity %) float 18
-
-#size of the generated… (has an effect to the rarity, too)
-snow_mapgen_size (Snow Biome Size) float 210
-
-#Minetest finally has capable snow biomes by default, lets not mess it up with the old snowgen.
-snow_disable_mapgen (Disable mod-generated biomes) bool true

src/abms.lua

@@ -1,12 +1,23 @@
--- Added to change dirt_with_snow to dirt if covered with blocks that don't let
--- light through (sunlight_propagates) or have a light paramtype and
--- liquidtype combination. ~ LazyJ, 2014_03_08
+--Backwards Compatability.
+minetest.register_abm({
+	nodenames = {"snow:snow1","snow:snow2","snow:snow3","gsnow4","snow:snow5","snow:snow6","snow:snow7","snow:snow8"},
+	interval = 1,
+	chance = 1,
+	action = function(pos, node)
+		minetest.add_node(pos, {name="default:snow"})
+		minetest.set_node_level(pos, 7*(tonumber(node.name:sub(-1))))
+	end,
+})
+
+
+
+-- Added to change dirt_with_snow to dirt if covered with blocks that don't let light through (sunlight_propagates) or have a light paramtype and liquidtype combination. ~ LazyJ, 2014_03_08
 
 minetest.register_abm({
 	nodenames = {"default:dirt_with_snow"},
 	interval = 2,
 	chance = 20,
-	action = function(pos)
+	action = function(pos, node)
 		local name = minetest.get_node({x=pos.x, y=pos.y+1, z=pos.z}).name
 		local nodedef = minetest.registered_nodes[name]
 		if name ~= "ignore"
@@ -70,6 +81,7 @@ minetest.register_abm({
 	 	else
 			return
 		end
+		nodeupdate(pos)
 	end,
 })
 
@@ -108,10 +120,7 @@ minetest.register_abm({
 					if math.random(2) == 2 then
 						p.y = pos.y
 						if minetest.get_node(p).name == "default:water_source" then
-							minetest.add_node(p, {
-								name = "default:ice",
-								param2 = math.random(0,node.param2-1)
-							})
+							minetest.add_node(p,{name="default:ice", param2 = math.random(0,node.param2-1)})
 						end
 					end
 				end
@@ -143,13 +152,13 @@ minetest.register_abm({
 
 
 
-
+--[[
 --Grow Pine Saplings
 minetest.register_abm({
 	nodenames = {"snow:sapling_pine"},
 	interval = 10,
 	chance = 50,
-	action = function(pos)
+	action = function(pos, node)
 
 -- Check if there is enough vertical-space for the sapling to grow without
 -- hitting anything else.  ~ LazyJ, 2014_04_10
@@ -162,7 +171,7 @@ minetest.register_abm({
 		end
 		-- 'then' let the sapling grow into a tree. ~ LazyJ
 
-		snow.make_pine(pos,false)
+		-- snow.make_pine(pos,false)
 		-- This finds the sapling under the grown tree. ~ LazyJ
 		if minetest.get_node(pos).name == "snow:sapling_pine" then
 			   -- This switches the sapling to a tree trunk. ~ LazyJ
@@ -172,17 +181,17 @@ minetest.register_abm({
 			   minetest.log("action", "A pine sapling grows into a tree at "..minetest.pos_to_string(pos))
 		end
 	end
-})
-
+})]]
 
 
 
+--[[
 --Grow Christmas Tree Saplings
 minetest.register_abm({
 	nodenames = {"snow:xmas_tree"},
 	interval = 10,
 	chance = 50,
-	action = function(pos)
+	action = function(pos, node)
 
 		-- 'If' there is air in each of the 8 nodes dirctly above the sapling,... ~LazyJ
 		for i = 1,8 do
@@ -192,14 +201,14 @@ minetest.register_abm({
 		end
 		-- 'then' let the sapling grow into a tree. ~ LazyJ
 
-		snow.make_pine(pos,false,true)
+		--snow.make_pine(pos,false,true)
 		minetest.log("action", "A pine sapling grows into a Christmas tree at "..minetest.pos_to_string(pos)) -- ~ LazyJ
 		--else  -- 'Else', if there isn't air in each of the 8 nodes above the sapling,
 				-- then don't anything; including not allowing the sapling to grow.
 				-- ~ LazyJ, 2014_04_10
 		--end
 	end
-})
+})]]
 
 
 

src/aliases.lua

@@ -1,6 +1,7 @@
 -- Some aliases for compatibility switches and some to make "/give" commands
 -- a little easier
 
+minetest.register_alias("snow:needles", "default:pine_needles")
 minetest.register_alias("snow:snow", "default:snow")
 minetest.register_alias("default_snow", "default:snow")
 minetest.register_alias("snow:snowball", "default:snow")
@@ -25,7 +26,8 @@ minetest.register_alias("icysnow", "snow:snow_cobble")
 minetest.register_alias("snowcobble", "snow:snow_cobble")
 minetest.register_alias("snowycobble", "snow:snow_cobble")
 minetest.register_alias("cobblesnow", "snow:snow_cobble")
-
+minetest.register_alias("snow:leaves", "default:pine_needles")
+minetest.register_alias("snow:sapling_pine", "default:pine_sapling")
 
 -- To clean up my first stairsplus attempt.
 -- Stair

src/basic_stairs_slabs.lua

@@ -0,0 +1,302 @@
+-- Based on
+-- Minetest 0.4 mod: stairs
+-- See README.txt for licensing and other information.
+
+
+-- ADD CHECK FOR MOREBLOCKS/SKIP IF NOT FOUND CODE STUFF HERE
+
+
+-- what of the recipeitem can be copied
+local recipe_values = {
+	"description", "tiles", "groups", "sounds", "use_texture_alpha", "sunlight_propagates",
+	"freezemelt", "liquidtype", "sunlight_propagates",
+	"stair_desc", "slab_desc"
+}
+
+local stairdef = {
+	drawtype = "nodebox",
+	paramtype = "light",
+	paramtype2 = "facedir",
+	is_ground_content = true,
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name="default_snow_footstep", gain=0.25},
+		dig = {name="default_dig_crumbly", gain=0.4},
+		dug = {name="default_snow_footstep", gain=0.75},
+		place = {name="default_place_node", gain=1.0}
+	}),
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+			{-0.5, 0, 0, 0.5, 0.5, 0.5},
+		},
+	},
+	on_place = function(itemstack, placer, pointed_thing)
+		if pointed_thing.type ~= "node" then
+			return itemstack
+		end
+
+		local p0 = pointed_thing.under
+		local p1 = pointed_thing.above
+		local param2 = 0
+
+		local placer_pos = placer:getpos()
+		if placer_pos then
+			local dir = {
+				x = p1.x - placer_pos.x,
+				y = p1.y - placer_pos.y,
+				z = p1.z - placer_pos.z
+			}
+			param2 = minetest.dir_to_facedir(dir)
+		end
+
+		if p0.y-1 == p1.y then
+			param2 = param2 + 20
+			if param2 == 21 then
+				param2 = 23
+			elseif param2 == 23 then
+				param2 = 21
+			end
+		end
+
+		return minetest.item_place(itemstack, placer, pointed_thing, param2)
+	end,
+
+	on_construct = function(pos)
+		pos.y = pos.y - 1
+		local node = minetest.get_node(pos)
+		if node.name == "default:dirt_with_grass"
+			-- Thinking in terms of layers, dirt_with_snow could also double as
+			-- dirt_with_frost which adds subtlety to the winterscape. ~ LazyJ, 2014_04_04
+		or node.name == "default:dirt" then
+			node.name = "default:dirt_with_snow"
+			minetest.set_node(pos, node)
+		end
+	end
+}
+
+-- Node will be called snow:stair_<subname>
+local function register_stair(subname, recipeitem, newdef)
+	local def = table.copy(stairdef)
+
+
+	for n,i in pairs(newdef) do
+		def[n] = i
+	end
+
+	local name = "snow:stair_" .. subname
+	minetest.register_node(name, def)
+--[[
+	-- for replace ABM
+	minetest.register_node("snow:stair_" .. subname.."upside_down", {
+		replace_name = "snow:stair_" .. subname,
+		groups = {slabs_replace=1},
+	})
+--]]
+	minetest.register_craft({
+		output = name .. " 6",
+		recipe = {
+			{recipeitem, "", ""},
+			{recipeitem, recipeitem, ""},
+			{recipeitem, recipeitem, recipeitem},
+		},
+	})
+
+	-- Flipped recipe
+	minetest.register_craft({
+		output = name .. " 6",
+		recipe = {
+			{"", "", recipeitem},
+			{"", recipeitem, recipeitem},
+			{recipeitem, recipeitem, recipeitem},
+		},
+	})
+end
+
+
+local slabdef = table.copy(stairdef)
+slabdef.node_box = {
+	type = "fixed",
+	fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+}
+slabdef.on_place = nil
+
+-- Node will be called snow:slab_<subname>
+local function register_slab(subname, recipeitem, newdef)
+	local def = table.copy(slabdef)
+
+	local name = "snow:slab_" .. subname
+	def.on_place = function(itemstack, placer, pointed_thing)
+		if pointed_thing.type ~= "node" then
+			return itemstack
+		end
+
+		-- If it's being placed on an another similar one, replace it with
+		-- a full block
+		local slabpos, slabnode
+		local p0 = pointed_thing.under
+		local p1 = pointed_thing.above
+		local n0 = minetest.get_node(p0)
+		local n1 = minetest.get_node(p1)
+
+		local n0_is_upside_down = (n0.name == name and
+				n0.param2 >= 20)
+
+		if n0.name == name
+		and not n0_is_upside_down
+		and p0.y+1 == p1.y then
+			slabpos = p0
+			slabnode = n0
+		elseif n1.name == name then
+			slabpos = p1
+			slabnode = n1
+		end
+		if slabpos then
+			-- Remove the slab at slabpos
+			minetest.remove_node(slabpos)
+			-- Make a fake stack of a single item and try to place it
+			local fakestack = ItemStack(recipeitem)
+			fakestack:set_count(itemstack:get_count())
+
+			pointed_thing.above = slabpos
+			local success
+			fakestack, success = minetest.item_place(fakestack, placer, pointed_thing)
+			-- If the item was taken from the fake stack, decrement original
+			if success then
+				itemstack:set_count(fakestack:get_count())
+			-- Else put old node back
+			else
+				minetest.set_node(slabpos, slabnode)
+			end
+			return itemstack
+		end
+
+		local param2
+		-- Upside down slabs
+		if p0.y-1 == p1.y then
+			-- Turn into full block if pointing at a existing slab
+			if n0_is_upside_down  then
+				-- Remove the slab at the position of the slab
+				minetest.remove_node(p0)
+				-- Make a fake stack of a single item and try to place it
+				local fakestack = ItemStack(recipeitem)
+				fakestack:set_count(itemstack:get_count())
+
+				pointed_thing.above = p0
+				local success
+				fakestack, success = minetest.item_place(fakestack, placer, pointed_thing)
+				-- If the item was taken from the fake stack, decrement original
+				if success then
+					itemstack:set_count(fakestack:get_count())
+				-- Else put old node back
+				else
+					minetest.set_node(p0, n0)
+				end
+				return itemstack
+			end
+
+			-- Place upside down slab
+			param2 = 20
+		elseif n0_is_upside_down
+		and p0.y+1 ~= p1.y then
+			-- If pointing at the side of a upside down slab
+			param2 = 20
+		end
+
+		return minetest.item_place(itemstack, placer, pointed_thing, param2)
+	end
+
+	for n,i in pairs(newdef) do
+		def[n] = i
+	end
+
+	minetest.register_node(name, def)
+--[[
+	-- for replace ABM
+	minetest.register_node("snow:slab_" .. subname.."upside_down", {
+		replace_name = "snow:slab_"..subname,
+		groups = {slabs_replace=1},
+	})
+--]]
+
+	minetest.register_craft({
+		output = name .. " 6",
+		recipe = {
+			{recipeitem, recipeitem, recipeitem},
+		},
+	})
+
+
+
+
+end
+--[[
+-- Replace old "upside_down" nodes with new param2 versions
+minetest.register_abm({
+	nodenames = {"group:slabs_replace"},
+	interval = 1,
+	chance = 1,
+	action = function(pos, node)
+		node.name = minetest.registered_nodes[node.name].replace_name
+		node.param2 = node.param2 + 20
+		if node.param2 == 21 then
+			node.param2 = 23
+		elseif node.param2 == 23 then
+			node.param2 = 21
+		end
+		minetest.set_node(pos, node)
+	end,
+})
+--]]
+
+
+
+-- Snow stairs and slabs require extra definitions because of their extra
+-- features (freezing, melting, and how they change dirt and dirt_with_grass). ~ LazyJ
+
+-- Nodes will be called snow:{stair,slab}_<subname>
+local function register_stair_and_slab(subname, recipeitem, def)
+	local recipedef = minetest.registered_nodes[recipeitem]
+	for _,i in pairs(recipe_values) do
+		if def[i] == nil
+		and recipedef[i] ~= nil then
+			def[i] = recipedef[i]
+		end
+	end
+	local groups = table.copy(def.groups)
+	groups.cooks_into_ice = nil
+	if groups.melts then
+		groups.melts = math.min(groups.melts+1, 3)
+	end
+	def.groups = groups
+
+	local stair_desc = def.stair_desc
+	def.stair_desc = nil
+	local slab_desc = def.slab_desc
+	def.slab_desc = nil
+
+	def.description = stair_desc
+	register_stair(subname, recipeitem, def)
+
+	def.description = slab_desc
+	register_slab(subname, recipeitem, def)
+end
+
+
+list_of_snow_stuff = {
+	--{"row[1] = first item in row",
+	-- "row[2] = second item in row",
+	-- "row[3] = third item in row", and so on, and so on...}, ~ LazyJ
+	{"ice", "default:ice", "Ice Stairs", "Ice Slabs"},
+	{"snowblock", "default:snowblock", "Snowblock Stairs", "Snowblock Slabs"},
+	{"snow_cobble", "snow:snow_cobble", "Snow Cobble Stairs", "Snow Cobble Slabs"},
+	{"snow_brick", "snow:snow_brick", "Snow Brick Stair", "Snow Brick Slab"},
+	{"ice_brick", "snow:ice_brick", "Ice Brick Stair", "Ice Brick Slab"},
+}
+
+for _, row in pairs(list_of_snow_stuff) do
+	register_stair_and_slab(row[1], row[2], {
+		stair_desc = row[3],
+		slab_desc = row[4],
+	})
+end

src/falling_snow.lua

@@ -1,6 +1,184 @@
--- Parameters
+--[[
+--=================
+--======================================
+LazyJ's Fork of Splizard's "Snow" Mod
+by LazyJ
+version: Umpteen and 7/5ths something or another.
+2014_04_12
+--======================================
+--=================
 
-local function snow_fall(pos)
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+THE LIST OF CHANGES I'VE MADE
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+* Falling snow would destroy nodes it deposited snow on. I figured out that if
+I switched the 'snow.place' with 'minetest.place_node' and increased the
+y position by 2, then the nodes were nolonger destroyed and the snow
+would start to pile up.
+
+
+
+~~~~~~
+TODO
+~~~~~~
+
+* Add code to prevent snowfall from depositing snow on or
+near torches and lava.
+
+* Add code to prevent snowfall from depositing snow on
+'walkable = false' defined nodes.
+
+both are already fixed -- Hybrid Dog
+--]]
+
+
+
+--=============================================================
+-- CODE STUFF
+--=============================================================
+
+
+local weather_legacy
+
+local worldpath = minetest.get_worldpath()
+local read_weather_legacy = function ()
+	local file = io.open(worldpath.."/weather_v6", "r")
+	if not file then return end
+	local readweather = file:read()
+	file:close()
+	return readweather
+end
+
+--Weather for legacy versions of minetest.
+local save_weather_legacy = function ()
+	local file = io.open(worldpath.."/weather_v6", "w+")
+	file:write(weather_legacy)
+	file:close()
+end
+
+weather_legacy = read_weather_legacy() or ""
+
+local function leg_step()
+	if weather_legacy == "snow" then
+		if math.random(1000) == 1 then
+			weather_legacy = "none"
+			save_weather_legacy()
+		end
+	elseif math.random(5000) == 2 then
+		weather_legacy = "snow"
+		save_weather_legacy()
+	end
+	minetest.after(2, leg_step)
+end
+minetest.after(4, leg_step)
+
+local function infolog(msg)
+	minetest.log("info", "[snow] falling_snow: "..msg)
+end
+
+-- copied from meru mod
+local SEEDDIFF3 = 9130 -- 9130 -- Values should match minetest mapgen desert perlin.
+local OCTAVES3 = 3 -- 3
+local PERSISTENCE3 = 0.5 -- 0.5
+local SCALE3 = 250 -- 250
+
+-- cache perlin noise tests
+local perlin_scale, rarity
+local cold_perl_values = {}
+setmetatable(cold_perl_values, {__mode = "kv"})
+local function cold_perlin_test(x, y)
+	if not cold_perl_values[y] then
+		cold_perl_values[y] = {}
+		setmetatable(cold_perl_values[y], {__mode = "kv"})
+	end
+
+	local v = cold_perl_values[y][x]
+	if v ~= nil then
+		return v
+	end
+
+	if not rarity then
+		rarity = snow.mapgen.smooth_rarity_min
+		perlin_scale = snow.mapgen.perlin_scale
+	end
+
+	v = minetest.get_perlin(112,3, 0.5, perlin_scale):get2d({x=x, y=y}) >= rarity
+	cold_perl_values[y][x] = v
+	return v
+end
+
+-- disable falling snow in desert
+local desert_perl_values = {}
+setmetatable(desert_perl_values, {__mode = "kv"})
+local function is_desert(x, y)
+	if not desert_perl_values[y] then
+		desert_perl_values[y] = {}
+		setmetatable(desert_perl_values[y], {__mode = "kv"})
+	end
+
+	local v = desert_perl_values[y][x]
+	if v ~= nil then
+		return v
+	end
+
+	-- Offsets must match minetest mapgen desert perlin.
+	-- Smooth transition 0.35 to 0.45.
+	v = minetest.get_perlin(SEEDDIFF3, OCTAVES3, PERSISTENCE3, SCALE3):get2d({x=x+150,y=y+50}) <= 0.35
+	desert_perl_values[y][x] = v
+	return v
+end
+
+--Get snow at position.
+local function get_snow(pos)
+	return weather_legacy == "snow" --Legacy support.
+		and cold_perlin_test(pos.x, pos.z)
+		and not is_desert(pos.x, pos.z)
+end
+
+local addvectors = vector.add
+
+--Returns a random position between minp and maxp.
+-- TODO: make a fload random position
+local function randpos(minp, maxp)
+	local x,z
+	if minp.x > maxp.x then
+		x = math.random(maxp.x,minp.x)
+	else
+		x = math.random(minp.x,maxp.x)
+	end
+	if minp.z > maxp.z then
+		z = math.random(maxp.z,minp.z)
+	else
+		z = math.random(minp.z,maxp.z)
+	end
+	return {x=x,y=minp.y,z=z}
+end
+
+local default_snow_particle = {
+	amount = 3,
+	time = 0.5,
+	exptime = 5,
+	size = 50,
+	collisiondetection = false,
+	vertical = false,
+}
+
+local function get_snow_particledef(data)
+	for n,i in pairs(default_snow_particle) do
+		data[n] = data[n] or i
+	end
+	for _,i in pairs({"vel", "acc", "exptime", "size"}) do
+		data["min"..i] = data[i]
+		data["max"..i] = data[i]
+	end
+	data.texture = "weather_snow.png^[transform"..math.random(0,7)
+	return data
+end
+
+local function snow_fall(pos, player, animate)
 	local ground_y = nil
 	for y=pos.y+10,pos.y+20,1 do
 		local n = minetest.get_node({x=pos.x,y=y,z=pos.z}).name
@@ -21,191 +199,99 @@ local function snow_fall(pos)
 
 	pos = {x=pos.x, y=ground_y, z=pos.z}
 
+  	if not get_snow(pos) then
+		return
+	end
+	if animate then
+		local spos = {x=pos.x, y=ground_y+10, z=pos.z}
+		minetest.add_particlespawner(get_snow_particledef({
+			minpos = addvectors(spos, {x=-9, y=3, z=-9}),
+			maxpos = addvectors(spos, {x= 9, y=5, z= 9}),
+			vel = {x=0, y=-1, z=-1},
+			acc = {x=0, y=0, z=0},
+			playername = player:get_player_name()
+		}))
+	end
 	snow.place(pos, true)
 	--minetest.place_node({x=pos.x, y=pos.y+2, z=pos.z}, {name="default:snow"}) -- LazyJ
 end
 
-local YLIMIT = 1 -- Set to world's water level
-				-- Particles are timed to disappear at this y
-				-- Particles do not spawn when player's head is below this y
-local PRECSPR = 6 -- Time scale for precipitation variation in minutes
-local PRECOFF = -0.4 -- Precipitation offset, higher = rains more often
-local GSCYCLE = 0.5 -- Globalstep cycle (seconds)
-local FLAKES = 32 -- Snowflakes per cycle
---~ local DROPS = 128 -- Raindrops per cycle
---~ local RAINGAIN = 0.2 -- Rain sound volume
-local COLLIDE = false -- Whether particles collide with nodes
-local NISVAL = 39 -- Clouds RGB value at night
-local DASVAL = 175 -- Clouds RGB value in daytime
+-- Snow
+local lighter_snowfall = snow.lighter_snowfall
+local function calc_snowfall()
+	for _, player in pairs(minetest.get_connected_players()) do
+		local ppos = player:getpos()
 
-local np_prec = {
-	offset = 0,
-	scale = 1,
-	spread = {x = PRECSPR, y = PRECSPR, z = PRECSPR},
-	seed = 813,
-	octaves = 1,
-	persist = 0,
-	lacunarity = 2.0,
-	--flags = ""
-}
+		-- Make sure player is not in a cave/house...
+		if get_snow(ppos)
+		and minetest.get_node_light(ppos, 0.5) == 15 then
+			local animate
+			if not lighter_snowfall then
+				local vel = {x=0, y=-1, z=-1}
+				local acc = {x=0, y=0, z=0}
+				minetest.add_particlespawner(get_snow_particledef({
+					amount = 5,
+					minpos = addvectors(ppos, {x=-9, y=3, z=-9}),
+					maxpos = addvectors(ppos, {x= 9, y=5, z= 9}),
+					vel = vel,
+					acc = acc,
+					size = 25,
+					playername = player:get_player_name()
+				}))
 
--- These 2 must match biome heat and humidity noise parameters for a world
+				minetest.add_particlespawner(get_snow_particledef({
+					amount = 4,
+					minpos = addvectors(ppos, {x=-5, y=3.2, z=-5}),
+					maxpos = addvectors(ppos, {x= 5, y=1.6, z= 5}),
+					vel = vel,
+					acc = acc,
+					exptime = 4,
+					size = 25,
+					playername = player:get_player_name()
+				}))
 
-local np_temp = {
-	offset = 50,
-	scale = 50,
-	spread = {x = 1000, y = 1000, z = 1000},
-	seed = 5349,
-	octaves = 3,
-	persist = 0.5,
-	lacunarity = 2.0,
-	--flags = ""
-}
+				animate = false
+			else
+				animate = true
+			end
 
-local np_humid = {
-	offset = 50,
-	scale = 50,
-	spread = {x = 1000, y = 1000, z = 1000},
-	seed = 842,
-	octaves = 3,
-	persist = 0.5,
-	lacunarity = 2.0,
-	--flags = ""
-}
+			if math.random(1,5) == 4 then
+				snow_fall(
+					randpos(
+						addvectors(ppos, {x=-20, y=0, z=-20}),
+						addvectors(ppos, {x= 20, y=0, z= 20})
+					),
+					player,
+					animate
+				)
+			end
+		end
+	end
+end
 
-
--- Stuff
-
-local difsval = DASVAL - NISVAL
-local grad = 14 / 95
-local yint = 1496 / 95
-
-
-
--- Globalstep function
-local timer = 0
+local step_func
+minetest.register_globalstep(function()
+	step_func()
+end)
 
 if snow.enable_snowfall then
-	minetest.register_globalstep(function(dtime)
-		timer = timer + dtime
-		if timer < GSCYCLE then
-			return
-		end
-
-		timer = 0
-
-		for _, player in ipairs(minetest.get_connected_players()) do
-			local player_name = player:get_player_name()
-			local pos_player = player:get_pos()
-			local pposy = math.floor(pos_player.y) + 2 -- Precipitation when swimming
-			if pposy >= YLIMIT - 2 then
-				local pposx = math.floor(pos_player.x)
-				local pposz = math.floor(pos_player.z)
-				local ppos = {x = pposx, y = pposy, z = pposz}
-
-				local nobj_temp = minetest.get_perlin(np_temp)
-				local nobj_humid = minetest.get_perlin(np_humid)
-				local nobj_prec = minetest.get_perlin(np_prec)
-
-				local nval_temp = nobj_temp:get_2d({x = pposx, y = pposz})
-				local nval_humid = nobj_humid:get_2d({x = pposx, y = pposz})
-				local nval_prec = nobj_prec:get_2d({x = os.clock() / 60, y = 0})
-
-				-- Biome system: Frozen biomes below heat 35,
-				-- deserts below line 14 * t - 95 * h = -1496
-				-- h = (14 * t + 1496) / 95
-				-- h = 14/95 * t + 1496/95
-				-- where 14/95 is gradient and 1496/95 is y intersection
-				-- h - 14/95 t = 1496/95 y intersection
-				-- so area above line is
-				-- h - 14/95 t > 1496/95
-				local freeze = nval_temp < 35
-				local precip = nval_prec < (nval_humid - 50) / 50 + PRECOFF and
-					nval_humid - grad * nval_temp > yint
-
-				if snow.debug then
-					precip = true
-				end
-
-				-- Check if player is outside
-				local outside = minetest.get_node_light(ppos, 0.5) == 15
-
-				-- Occasionally reset player sky
-				if math.random() < 0.1 then
-					if precip then
-						-- Set overcast sky
-						local sval
-						local time = minetest.get_timeofday()
-						if time >= 0.5 then
-							time = 1 - time
-						end
-						-- Sky brightness transitions:
-						-- First transition (24000 -) 4500, (1 -) 0.1875
-						-- Last transition (24000 -) 5750, (1 -) 0.2396
-						if time <= 0.1875 then
-							sval = NISVAL
-						elseif time >= 0.2396 then
-							sval = DASVAL
-						else
-							sval = math.floor(NISVAL +
-								((time - 0.1875) / 0.0521) * difsval)
-						end
-						-- Set sky to overcast bluish-grey
-						player:set_sky({
-							base_color = {r = sval, g = sval, b = sval + 16, a = 255},
-							type = "plain",
-						})
-					else
-						-- Reset sky to normal
-						player:set_sky({type = "regular"})
-					end
-				end
-
-				if precip and outside then
-					-- Precipitation
-					if freeze then
-						-- Snowfall
-						local extime = math.min((pposy + 12 - YLIMIT) / 2, 9)
-
-						local x, y, z = pposx - 24 + math.random(0, 48), pposy + 12, pposz - 24 + math.random(0, 48)
-
-						if not snow.lighter_snowfall then
-							snow_fall({
-										x = x,
-										y = y,
-										z = z
-									}, true)
-						end
-
-						for _ = 1, FLAKES do
-
-							x, y, z = pposx - 24 + math.random(0, 48), pposy + 12, pposz - 24 + math.random(0, 48)
-
-							minetest.add_particle({
-								pos = {
-									x = x,
-									y = y,
-									z = z
-								},
-								velocity = {
-									x = (-20 + math.random(0, 40)) / 100,
-									y = -2.0,
-									z = (-20 + math.random(0, 40)) / 100
-								},
-								acceleration = {x = 0, y = 0, z = 0},
-								expirationtime = extime,
-								size = 2.8,
-								collisiondetection = COLLIDE,
-								collision_removal = true,
-								vertical = false,
-								texture = "snowdrift_snowflake" ..
-									math.random(1, 12) .. ".png",
-								playername = player_name
-							})
-						end
-					end
-				end
-			end
-		end
-	end)
+	step_func = calc_snowfall
+	infolog("step function set to calc_snowfall")
+else
+	step_func = function() end
+	infolog("step function set to empty function")
 end
+
+snow.register_on_configuring(function(name, v)
+	if name == "enable_snowfall" then
+		if v then
+			step_func = calc_snowfall
+			infolog("step function set to calc_snowfall")
+		else
+			step_func = function() end
+			infolog("step function set to empty function")
+		end
+	elseif name == "lighter_snowfall" then
+		lighter_snowfall = v
+	end
+end)

src/mapgen.lua

@@ -12,26 +12,25 @@ saplings grow into trees. --]]
 
 -- Part 1: To disable the mapgen, add the *starting* comment under this line.
 
-local perlin_scale, nosmooth_rarity
-if not snow.disable_mapgen then
-	print("[snow] Mapgen enabled!")
 
-	snow.mapgen = snow.mapgen or {}
-	local mg = snow.mapgen
+snow.mapgen = snow.mapgen or {}
+local mg = snow.mapgen
 
-	-- perlin noise "hills" are not peaks but looking like sinus curve
-	local function upper_rarity(rarity)
+-- perlin noise "hills" are not peaks but looking like sinus curve
+local function upper_rarity(rarity)
 	return math.sign(rarity)*math.sin(math.abs(rarity)*math.pi/2)
-	end
+end
 
-	local rarity = snow.mapgen_rarity
-	local size = snow.mapgen_size
-	local smooth = snow.smooth_biomes
+local rarity = snow.mapgen_rarity
+local size = snow.mapgen_size
+local smooth = snow.smooth_biomes
 
-	local function calc_values()
+local nosmooth_rarity, perlin_scale
+local function calc_values()
 	nosmooth_rarity = 1-rarity/50
 	perlin_scale = size*100/rarity
 	mg.perlin_scale = perlin_scale
+	local smooth_rarity_max, smooth_rarity_min, smooth_rarity_dif
 	if smooth then
 		local smooth_trans_size = 4 --snow.smooth_trans_size
 		mg.smooth_rarity_max = upper_rarity(nosmooth_rarity+smooth_trans_size*2/perlin_scale)
@@ -40,10 +39,10 @@ if not snow.disable_mapgen then
 	end
 	nosmooth_rarity = upper_rarity(nosmooth_rarity)
 	mg.nosmooth_rarity = nosmooth_rarity
-	end
-	calc_values()
+end
+calc_values()
 
-	snow.register_on_configuring(function(name, v)
+snow.register_on_configuring(function(name, v)
 	if name == "mapgen_rarity" then
 		rarity = v
 	elseif name == "mapgen_size" then
@@ -55,22 +54,21 @@ if not snow.disable_mapgen then
 	end
 	-- TODO: if e.g. size and rarity get changed at once, don't calculate the values more times
 	calc_values()
-	end)
+end)
 
 
-	--Identify the mapgen.
-	local mgname = minetest.get_mapgen_setting"mg_name"
-	if not mgname then
+--Identify the mapgen.
+local mgname = minetest.get_mapgen_setting"mg_name"
+if not mgname then
 	minetest.log("error", "[MOD] Snow Biomes: WARNING! mapgen could not be identifyed!")
-	end
-	local path = minetest.get_modpath"snow"
-	if mgname == "v7" then
+end
+local path = minetest.get_modpath"snow"
+if mgname == "v7" then
 	--Load mapgen_v7 compatibility.
 	dofile(path.."/src/mapgen_v7.lua")
-	else
+else
 	--Load mapgen_v6 compatibility.
 	dofile(path.."/src/mapgen_v6.lua")
-	end
 end
 
 -- To complete the commenting-out add the *closing* comment under this line.
@@ -109,11 +107,11 @@ local xmas_tree = {
 --Makes pine tree
 function snow.make_pine(pos,snow,xmas)
 	local minetest = minetest
-	local function try_node(p, node)
-		local n = minetest.get_node(p).name
+	local try_node = function(pos, node)
+		local n = minetest.get_node(pos).name
 		if n == "air"
 		or n == "ignore" then
-			minetest.add_node(p, node)
+			minetest.add_node(pos, node)
 		end
 	end
 	if xmas then
@@ -137,7 +135,7 @@ function snow.make_pine(pos,snow,xmas)
 	if xmas then
 		try_node({x=pos.x,y=pos.y+7,z=pos.z},{name="snow:star_lit"}) -- Added lit star. ~ LazyJ
 	elseif snow
-	and minetest.get_perlin(112,3, 0.5, perlin_scale):get_2d({x=pos.x,y=pos.z}) > nosmooth_rarity then
+	and minetest.get_perlin(112,3, 0.5, perlin_scale):get2d({x=pos.x,y=pos.z}) > nosmooth_rarity then
 		try_node({x=pos.x,y=pos.y+7,z=pos.z},{name="default:snow"})
 	end
 end
@@ -149,19 +147,20 @@ function snow.voxelmanip_pine(pos,a,data)
 	local c_snow = minetest.get_content_id("default:snow")
 	local c_pine_needles = minetest.get_content_id("snow:needles")
 	local c_pinetree = minetest.get_content_id("default:pinetree")
+	local c_air = minetest.get_content_id("air")
 
 	local perlin1 = minetest.get_perlin(112,3, 0.5, perlin_scale)
-	for off_z = -1,1 do
-		local z = pos.z + off_z
-		for off_x = -1,1 do
-			local x = pos.x + off_x
+	for z = -1,1 do
+		local z = pos.z + z
+		for x = -1,1 do
+			local x = pos.x + x
 
 			--Make tree.
 			for i = 1,2 do
 				data[a:index(x,pos.y+i,z)] = c_pine_needles
 				if x ~= 0
 				and z ~= 0
-				and perlin1:get_2d({x=x,y=z}) > nosmooth_rarity then
+				and perlin1:get2d({x=x,y=z}) > nosmooth_rarity then
 					local abovenode = a:index(x,pos.y+i+1,z)
 					data[abovenode] = c_snow
 				end
@@ -176,16 +175,16 @@ function snow.voxelmanip_pine(pos,a,data)
 		data[a:index(x-1,y,z)] = c_pine_needles
 		data[a:index(x,y,z+1)] = c_pine_needles
 		data[a:index(x,y,z-1)] = c_pine_needles
-		if perlin1:get_2d({x=x+1,y=z}) > nosmooth_rarity then
+		if perlin1:get2d({x=x+1,y=z}) > nosmooth_rarity then
 			data[a:index(x+1,y+1,z)] = c_snow
 		end
-		if perlin1:get_2d({x=x+1,y=z}) > nosmooth_rarity then
+		if perlin1:get2d({x=x+1,y=z}) > nosmooth_rarity then
 			data[a:index(x-1,y+1,z)] = c_snow
 		end
-		if perlin1:get_2d({x=x,y=z+1}) > nosmooth_rarity then
+		if perlin1:get2d({x=x,y=z+1}) > nosmooth_rarity then
 			data[a:index(x,y+1,z+1)] = c_snow
 		end
-		if perlin1:get_2d({x=x,y=z-1}) > nosmooth_rarity then
+		if perlin1:get2d({x=x,y=z-1}) > nosmooth_rarity then
 			data[a:index(x,y+1,z-1)] = c_snow
 		end
 	end
@@ -194,29 +193,7 @@ function snow.voxelmanip_pine(pos,a,data)
 	end
 	data[a:index(pos.x,pos.y+5,pos.z)] = c_pine_needles
 	data[a:index(pos.x,pos.y+6,pos.z)] = c_pine_needles
-	if perlin1:get_2d({x=pos.x,y=pos.z}) > nosmooth_rarity then
+	if perlin1:get2d({x=pos.x,y=pos.z}) > nosmooth_rarity then
 		data[a:index(pos.x,pos.y+7,pos.z)] = c_snow
 	end
 end
-
--- treecapitator support
-if minetest.global_exists"treecapitator" then
-	treecapitator.register_tree{
-		trees = {"default:pine_tree"},
-		leaves = {"snow:needles"},
-		range = 1,
-		range_up = 2,
-		range_down = 3,
-		stem_height_min = 1,
-	}
-
-	treecapitator.register_tree{
-		trees = {"default:pine_tree"},
-		leaves = {"snow:needles_decorated"},
-		fruits = {"snow:star_lit", "snow:star"},
-		range = 1,
-		range_up = 3,
-		range_down = 3,
-		stem_height_min = 1,
-	}
-end

src/mapgen_v6.lua

@@ -14,11 +14,11 @@ local np_default = {
 -- 2D noise for coldness
 
 local mg = snow.mapgen
-local scale_coldness = mg.perlin_scale
+local scale = mg.perlin_scale
 local np_cold = {
 	offset = 0,
 	scale = 1,
-	spread = {x=scale_coldness, y=scale_coldness, z=scale_coldness},
+	spread = {x=scale, y=scale, z=scale},
 	seed = 112,
 	octaves = 3,
 	persist = 0.5
@@ -172,23 +172,6 @@ snow.register_on_configuring(function(name, v)
 	end
 end)
 
-local perlin_objs, perlins_chulen
-local function get_perlins(sidelen)
-	if perlins_chulen == sidelen then
-		return
-	end
-	perlins_chulen = sidelen
-	local chulens = {x=sidelen, y=sidelen}
-	perlin_objs = {
-		default = minetest.get_perlin_map(np_default, chulens),
-		cold = minetest.get_perlin_map(np_cold, chulens),
-		ice = minetest.get_perlin_map(np_ice, chulens),
-	}
-end
-
-local nbuf_default = {}
-local nbuf_cold = {}
-local nbuf_ice = {}
 minetest.register_on_generated(function(minp, maxp, seed)
 	local t1 = os.clock()
 
@@ -211,9 +194,10 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local snow_tab,num = {},1
 	local pines_tab,pnum = {},1
 
-	get_perlins(x1 - x0 + 1)
-	local nvals_default = perlin_objs.default:get_2dMap_flat({x=x0+150, y=z0+50}, nbuf_default)
-	local nvals_cold, nvals_ice, ndia
+	local sidelen = x1 - x0 + 1
+	local chulens = {x=sidelen, y=sidelen, z=sidelen}
+	local nvals_default = minetest.get_perlin_map(np_default, chulens):get2dMap_flat{x=x0+150, y=z0+50}
+	local nvals_cold, nvals_ice
 
 	-- Choose biomes
 	local pr = PseudoRandom(seed+57)
@@ -231,7 +215,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local nodes_added
 
 	-- Loop through columns in chunk
-	local is_smooth = smooth and not snowy
+	local smooth = smooth and not snowy
 	local write_to_map = false
 	local ni = 1
 	for z = z0, z1 do
@@ -239,9 +223,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
 		local in_biome = false
 		local test
 		if nvals_default[ni] < 0.35 then
-			nvals_cold = nvals_cold or perlin_objs.cold:get_2dMap_flat({x=x0, y=z0}, nbuf_cold)
+			if not nvals_cold then
+				nvals_cold = minetest.get_perlin_map(np_cold, chulens):get2dMap_flat{x=x0, y=z0}
+			end
 			test = math.min(nvals_cold[ni], 1)
-			if is_smooth then
+			if smooth then
 				if test >= smooth_rarity_max
 				or (
 					test > smooth_rarity_min
@@ -257,44 +243,45 @@ minetest.register_on_generated(function(minp, maxp, seed)
 		if not in_biome then
 			if alpine
 			and test
-			and test > (is_smooth and smooth_rarity_min or nosmooth_rarity) then
+			and test > smooth_rarity_min then
 				-- remove trees near alpine
 				local ground_y
 				if data[area:index(x, maxp.y, z)] == c.air then
-					local ytop = math.min(heightmap[ni]+20, maxp.y)
-					local vi = area:index(x, ytop, z)
-					for y = ytop, math.max(minp.y, heightmap[ni]-5), -1 do
-						if data[vi] ~= c.air then
+					for y = math.min(heightmap[ni]+20, maxp.y), math.max(minp.y, heightmap[ni]-5), -1 do
+						if data[area:index(x, y, z)] ~= c.air then
 							ground_y = y
 							break
 						end
-						vi = vi - area.ystride
 					end
 				end
 
 				if ground_y then
 					local vi = area:index(x, ground_y, z)
-					for _ = minp.y - 16, ground_y do
+					if data[vi] == c.leaves
+					or data[vi] == c.jungleleaves then
+						nodes_added = true
+						for y = ground_y, -16, -1 do
+							local vi = area:index(x, y, z)
 							local id = data[vi]
+							if id ~= c.air then
 								if id == c.leaves
 								or id == c.jungleleaves
 								or id == c.tree
 								or id == c.apple then
 									data[vi] = c.air
-							nodes_added = true
 								else
 									break
 								end
-						vi = vi - area.ystride
+							end
+						end
 					end
 				end
 			end
 		else
-			if not nvals_ice then
-				nvals_ice = perlin_objs.ice:get_2dMap_flat({x=x0, y=z0}, nbuf_ice)
-
 			nodes_added = true
 			write_to_map = true
+			if not nvals_ice then
+				nvals_ice = minetest.get_perlin_map(np_ice, chulens):get2dMap_flat{x=x0, y=z0}
 			end
 			local icetype = nvals_ice[ni]
 			local cool = icetype > 0 -- only spawns ice on edge of water
@@ -308,14 +295,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
 			-- avoid generating underground
 			if data[area:index(x, maxp.y, z)] == c.air then
 				-- search for non air node from 20 m above ground down to 5 m below ground (confined by minp and maxp)
-				local ytop = math.min(heightmap[ni]+20, maxp.y)
-				local vi = area:index(x, ytop, z)
-				for y = ytop, math.max(minp.y, heightmap[ni]-5), -1 do
-					if data[vi] ~= c.air then
+				for y = math.min(heightmap[ni]+20, maxp.y), math.max(minp.y, heightmap[ni]-5), -1 do
+					if data[area:index(x, y, z)] ~= c.air then
 						ground_y = y
 						break
 					end
-					vi = vi - area.ystride
 				end
 			end
 
@@ -329,13 +313,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						snow_tab[num] = {ground_y, z, x, test}
 						num = num+1
 						-- generate stone ground
-						local vi = area:index(x, ground_y, z)
-						for _ = math.max(-6, minp.y-6), ground_y do
+						for y = ground_y, math.max(-6, minp.y-6), -1 do
+							local vi = area:index(x, y, z)
 							if data[vi] == c.stone then
 								break
 							end
 							data[vi] = c.stone
-							vi = vi - area.ystride
 						end
 					elseif pines
 					and pr:next(1,36) == 1 then
@@ -347,8 +330,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						data[area:index(x, ground_y+1, z)] = c.dry_shrub
 					else
 						if snowy
-						or test > (is_smooth and smooth_rarity_max or
-								nosmooth_rarity) then
+						or test > smooth_rarity_max then
 							-- more, deeper snow
 							data[node] = c.snow_block
 						else
@@ -361,21 +343,26 @@ minetest.register_on_generated(function(minp, maxp, seed)
 					if not icesheet
 					and not icecave
 					and not icehole then
-						local y = data[node - area.ystride]
-						local ice = y ~= c.water and y ~= c.ice
-
-						if not ice then
-							ndia = ndia or {
-								area.zstride - 1,
-								1,
-								-2*area.zstride - 2,
-								area.zstride,
-								1 - area.zstride,
-								0
+						local nds = {
+							data[area:index(x+1, ground_y, z)],
+							data[area:index(x, ground_y, z+1)],
+							data[area:index(x+1, ground_y, z+1)],
+							data[area:index(x-1, ground_y, z-1)],
+							data[area:index(x-1, ground_y, z)],
+							data[area:index(x, ground_y, z-1)],
 						}
-							local vi = node + 1
-							for n = 1,6 do
-								local i = data[vi]
+						local ice
+						if pr:next(1,4) == 1
+						and (cool or icebergs) then
+							for _,i in ipairs(nds) do
+								if i == c.ice then
+									ice = true
+									break
+								end
+							end
+						end
+						if not ice then
+							for _,i in ipairs(nds) do
 								if i ~= c.water
 								and i ~= c.ice
 								and i ~= c.air
@@ -383,24 +370,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
 									ice = true
 									break
 								end
-								vi = vi + ndia[n]
-							end
-
-							if not ice
-							and (cool or icebergs)
-							and pr:next(1,4) == 1 then
-
-								local vi_ice = node + 1
-								for i = 1,6 do
-									if data[vi_ice] == c.ice then
-										ice = true
-										break
-									end
-									vi_ice = vi_ice + ndia[i]
-								end
 							end
 						end
+						local y = data[area:index(x, ground_y-1, z)]
 						if ice
+						or (y ~= c.water and y ~= c.ice) -- and y ~= "air") …I don't think y can be a string here ~HybridDog
 						or (icebergs and pr:next(1,6) == 1) then
 							data[node] = c.ice
 						end
@@ -411,13 +385,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
 							data[node] = c.ice
 						end
 						if icecave then
-							local vi = area:index(x, ground_y-1, z)
-							for _ = math.max(minp.y-16, -33), ground_y-1 do
+							for y = ground_y-1, -33, -1 do
+								local vi = area:index(x, y, z)
 								if data[vi] ~= c.water then
 									break
 								end
 								data[vi] = c.air
-								vi = vi - area.ystride
 							end
 						end
 						if icesheet then
@@ -436,23 +409,24 @@ minetest.register_on_generated(function(minp, maxp, seed)
 					snow_tab[num] = {ground_y, z, x, test}
 					num = num+1
 					-- replace papyrus plants with snowblocks
-					local vi = area:index(x, ground_y, z)
+					local y = ground_y
 					for _ = 1,7 do
-						if data[vi] ~= c.papyrus then
+						local vi = area:index(x, y, z)
+						if data[vi] == c.papyrus then
+							data[vi] = c.snow_block
+							y = y-1
+						else
 							break
 						end
-						data[vi] = c.snow_block
-						vi = vi - area.ystride
 					end
 				elseif alpine then
 					-- make stone pillars out of trees and other stuff
-					local vi = area:index(x, ground_y, z)
-					for _ = 0, ground_y - math.max(-6, minp.y-6) do
-						if data[vi] == c.stone then
+					for y = ground_y, math.max(-6, minp.y-6), -1 do
+						local stone = area:index(x, y, z)
+						if data[stone] == c.stone then
 							break
 						end
-						data[vi] = c.stone
-						vi = vi - area.ystride
+						data[stone] = c.stone
 					end
 					-- put snow onto it
 					snow_tab[num] = {ground_y, z, x, test}
@@ -463,8 +437,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						snow_tab[num] = {ground_y, z, x, test}
 						num = num+1
 					end
-					local vi = area:index(x, ground_y, z)
-					for _ = 0, 12 do
+					for y = 0, 12 do
+						y = ground_y-y
+						local vi = area:index(x, y, z)
 						local nd = data[vi]
 						local plantlike = is_plantlike(nd)
 						if replacements[nd] then
@@ -476,7 +451,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 							data[vi] = c.dirt_with_snow
 							break
 						elseif plantlike then
-							local under = vi - area.ystride
+							local under = area:index(x, y-1, z)
 							if data[under] == c.dirt_with_grass then
 								-- replace other plants with shrubs
 								data[vi] = c.snow_shrub
@@ -487,7 +462,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
 						elseif nd == c.stone then
 							break
 						end
-						vi = vi - area.ystride
 					end
 				end
 			end
@@ -501,14 +475,15 @@ minetest.register_on_generated(function(minp, maxp, seed)
 		return
 	end
 
+	-- try to fix oom memory crashes
+	minetest.after(0, collectgarbage)
+
 	if num ~= 1 then
-		for i = 1, num-1 do
-			i = snow_tab[i]
+		for _,i in pairs(snow_tab) do
 			-- set snow
 			data[area:index(i[3], i[1]+1, i[2])] = c.snow
 		end
-		for k = 1, num-1 do
-			local i = snow_tab[k]
+		for _,i in pairs(snow_tab) do
 			local y,z,x,test = unpack(i)
 			test = (test-nosmooth_rarity)/(1-nosmooth_rarity) -- /(1-0.53)
 			if test > 0 then
@@ -518,8 +493,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
 					if h ~= 1 then
 						-- search for nearby snow
 						y = y+1
-						for off = -1,1,2 do
-							for _,cord in pairs({{x+off,z}, {x,z+off}}) do
+						for i = -1,1,2 do
+							for _,cord in pairs({{x+i,z}, {x,z+i}}) do
 								local nd = data[area:index(cord[1], y, cord[2])]
 								if nd == c.air
 								or is_plantlike(nd) then
@@ -553,8 +528,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	if pines
 	and pnum ~= 1 then
 		local spawn_pine = snow.voxelmanip_pine
-		for i = 1, pnum-1 do
-			spawn_pine(pines_tab[i], area, data)
+		for _,pos in pairs(pines_tab) do
+			spawn_pine(pos, area, data)
 		end
 	end
 
@@ -579,7 +554,7 @@ local biome_strings = {
 	{"snowy", "plain", "alpine", "normal", "normal"},
 	{"cool", "icebergs", "icesheet", "icecave", "icehole"}
 }
-function biome_to_string(num)
+function biome_to_string(num,num2)
 	local biome = biome_strings[1][num] or "unknown "..num
 	return biome
 end

src/nodes.lua

@@ -8,16 +8,11 @@ local nodedef = {
 	tiles = {"snow_needles.png"},
 	waving = 1,
 	paramtype = "light",
-	groups = {snappy=3},
+	groups = {snappy=3, leafdecay=5},
 	furnace_burntime = 1,
 	drop = {
 		max_items = 1,
 		items = {
-			{
-				-- player will get sapling with 1/20 chance
-				items = {'snow:sapling_pine'},
-				rarity = 20,
-			},
 			{
 				items = {'snow:needles'},
 			}
@@ -32,23 +27,17 @@ If christmas_content is enabled, then this next part will override the pine need
 The Xmas tree needles are registred and defined a farther down in this nodes.lua file.
 
 ~ LazyJ
-]]
+
 if snow.christmas_content then
 	table.insert(nodedef.drop.items, 1, {
 		-- player will get xmas tree with 1/120 chance
-		items = {"snow:xmas_tree"},
+		items = {'snow:xmas_tree'},
 		rarity = 120,
 	})
 end
-
+]]
 minetest.register_node("snow:needles", table.copy(nodedef))
 
-default.register_leafdecay{
-	trunks = {"default:pine_tree"},
-	leaves = {"snow:needles"},
-	radius = 2,
-}
-
 snow.register_on_configuring(function(name, v)
 	if name == "christmas_content" then
 		local drop = minetest.registered_nodes["snow:needles"].drop
@@ -66,10 +55,10 @@ end)
 
 
 
--- Christmas egg
-if minetest.global_exists("skins") then
-	skins.add("character_snow_man")
-end
+	-- Christmas egg
+	if minetest.global_exists"skins" then
+		skins.add"character_snow_man"
+	end
 
 
 -- Decorated Pine Leaves
@@ -82,18 +71,16 @@ if snow.disable_deco_needle_ani then
 else
 	-- Animated, "blinking lights" version. ~ LazyJ
 	nodedef.inventory_image = minetest.inventorycube("snow_needles_decorated.png")
-	nodedef.tiles = {{
-		name="snow_needles_decorated_animated.png",
-		animation={type="vertical_frames", aspect_w=16, aspect_h=16,
-			length=20.0}
-	}}
+	nodedef.tiles = {
+		{name="snow_needles_decorated_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=20.0}}
+	}
 end
 nodedef.drop.items[#nodedef.drop.items] = {items = {'snow:needles_decorated'}}
 
 minetest.register_node("snow:needles_decorated", nodedef)
 
 
--- Saplings
+--[[ Saplings
 
 nodedef = {
 	description = "Pine Sapling",
@@ -119,7 +106,7 @@ nodedef.inventory_image = "snow_xmas_tree.png"
 nodedef.wield_image = "snow_xmas_tree.png"
 
 minetest.register_node("snow:xmas_tree", nodedef)
-
+]]
 
 nodedef = {
 	description = "Star",
@@ -131,15 +118,12 @@ nodedef = {
 	walkable = false,
 	-- Don't want the ornament breaking too easily because you have to punch it to turn it on and off. ~ LazyJ
 	groups = {cracky=1, crumbly=1, choppy=1, oddly_breakable_by_hand=1},
-	-- Breaking "glass" sound makes it sound like a real, broken, Xmas tree
-	-- ornament (Sorry, Mom!).  ;)-  ~ LazyJ
-	sounds = default.node_sound_glass_defaults(
-		{dig = {name="default_glass_footstep", gain=0.2}}),
-	-- Added a "lit" star that can be punched on or off depending on your
-	-- preference. ~ LazyJ
-	on_punch = function(pos, node)
+	-- Breaking "glass" sound makes it sound like a real, broken, Xmas tree ornament (Sorry, Mom!).  ;)-  ~ LazyJ
+	sounds = default.node_sound_glass_defaults({dig = {name="default_glass_footstep", gain=0.2}}),
+	on_punch = function(pos, node) -- Added a "lit" star that can be punched on or off depending on your preference. ~ LazyJ
 		node.name = "snow:star_lit"
 		minetest.set_node(pos, node)
+		nodeupdate(pos)
 	end,
 }
 
@@ -148,13 +132,14 @@ minetest.register_node("snow:star", table.copy(nodedef))
 
 -- Star (Lit Version) on Xmas Trees
 nodedef.description = nodedef.description.." Lighted"
-nodedef.light_source = minetest.LIGHT_MAX
+nodedef.light_source = default.LIGHT_MAX
 nodedef.tiles = {"snow_star_lit.png"}
 nodedef.drop = "snow:star"
 nodedef.groups.not_in_creative_inventory = 1
 nodedef.on_punch = function(pos, node)
 	node.name = "snow:star"
 	minetest.set_node(pos, node)
+	nodeupdate(pos)
 end
 
 minetest.register_node("snow:star_lit", nodedef)
@@ -272,15 +257,6 @@ nodedef.groups.flammable = 1
 minetest.register_node("snow:apple", nodedef)
 snow.known_plants[minetest.get_content_id("default:apple")] = minetest.get_content_id("snow:apple")
 
-if not snow.disable_mapgen then
-	-- decay from default/nodes.lua:2537
-	default.register_leafdecay{
-		trunks = {"default:tree"},
-		leaves = {"snow:apple", "snow:leaves"},
-		radius = minetest.get_mapgen_setting"mg_name" == "v6" and 2 or 3,
-	}
-end
-
 -- TODO
 snow.known_plants[minetest.get_content_id("default:jungleleaves")] = minetest.get_content_id("default:jungleleaves")
 
@@ -291,7 +267,8 @@ local function snow_onto_dirt(pos)
 	local node = minetest.get_node(pos)
 	if node.name == "default:dirt_with_grass"
 	or node.name == "default:dirt" then
-		minetest.set_node(pos, {name = "default:dirt_with_snow"})
+		node.name = "default:dirt_with_snow"
+		minetest.set_node(pos, node)
 	end
 end
 
@@ -311,27 +288,33 @@ nodedef = {
 	-- by player position. ~ LazyJ
 	 -- I made this a little harder to dig than snow blocks because
 	 -- I imagine snow brick as being much more dense and solid than fluffy snow. ~ LazyJ
-	groups = {cracky=2, crumbly=2, choppy=2, oddly_breakable_by_hand=2, melts=1,
-		icemaker=1, cooks_into_ice=1, cools_lava = 1, snowy = 1},
+	groups = {cracky=2, crumbly=2, choppy=2, oddly_breakable_by_hand=2, melts=1, icemaker=1, cooks_into_ice=1},
 	 --Let's use the new snow sounds instead of the old grass sounds. ~ LazyJ
-	sounds = default.node_sound_snow_defaults(),
-	-- The "on_construct" part below, thinking in terms of layers,
-	-- dirt_with_snow could also double as dirt_with_frost which adds subtlety
-	-- to the winterscape. ~ LazyJ
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name="default_snow_footstep", gain=0.25},
+		dig = {name="default_dig_crumbly", gain=0.4},
+		dug = {name="default_snow_footstep", gain=0.75},
+		place = {name="default_place_node", gain=1.0}
+	}),
+ 	-- The "on_construct" part below, thinking in terms of layers, dirt_with_snow could also
+ 	-- double as dirt_with_frost which adds subtlety to the winterscape. ~ LazyJ
 	on_construct = snow_onto_dirt
 }
 
 -- Snow Brick
 minetest.register_node("snow:snow_brick", table.copy(nodedef))
 
+
 -- hard Ice Brick, original texture from LazyJ
 local ibdef = table.copy(nodedef)
 ibdef.description = "Ice Brick"
 ibdef.tiles = {"snow_ice_brick.png"}
-ibdef.use_texture_alpha = "blend"
+ibdef.use_texture_alpha = true
 ibdef.drawtype = "glasslike"
-ibdef.groups = {cracky=1, crumbly=1, choppy=1, melts=1, cools_lava = 1, slippery = 3}
-ibdef.sounds = default.node_sound_ice_defaults()
+ibdef.groups = {cracky=1, crumbly=1, choppy=1, melts=1}
+ibdef.sounds = default.node_sound_glass_defaults({
+	dug = {name="default_hard_footstep", gain=1}
+})
 
 minetest.register_node("snow:ice_brick", ibdef)
 
@@ -343,159 +326,43 @@ nodedef.tiles = {"snow_snow_cobble.png"}
 
 minetest.register_node("snow:snow_cobble", nodedef)
 
+
+
 -- Override Default Nodes to Add Extra Functions
 
-local groups = minetest.registered_nodes["default:ice"].groups
-groups["melt"] = 1
+-- This adds code to the existing default ice. ~ LazyJ
 minetest.override_item("default:ice", {
+	-- The Lines: 1. Alpah to make semi-transparent ice, 2 to work with
+	-- the dirt_with_grass/snow/just dirt ABMs. ~ LazyJ, 2014_03_09
+	use_texture_alpha = true, -- 1
+	param2 = 0,
+	--param2 is reserved for how much ice will freezeover.
+	sunlight_propagates = true, -- 2
 	drawtype = "glasslike",
-	use_texture_alpha = "blend",
-	param2 = 0,  --param2 is reserved for how much ice will freezeover.
-	sunlight_propagates = true,  -- necessary for dirt_with_grass/snow/just dirt ABMs
-	tiles = {"snow_ice.png^[brighten"},
+	inventory_image  = minetest.inventorycube("default_ice.png").."^[brighten",
 	liquidtype = "none",
-	groups = groups,
+	 -- I made this a lot harder to dig than snow blocks because ice is much more dense
+	 -- and solid than fluffy snow. ~ LazyJ
+	groups = {cracky=2, crumbly=1, choppy=1, --[[oddly_breakable_by_hand=1,]] melts=1},
 	on_construct = snow_onto_dirt,
 	liquids_pointable = true,
 	--Make ice freeze over when placed by a maximum of 10 blocks.
 	after_place_node = function(pos)
 		minetest.set_node(pos, {name="default:ice", param2=math.random(0,10)})
-	end,
+	end
 })
 
-groups = minetest.registered_nodes["default:snowblock"].groups
-for g,v in pairs({melts=1, icemaker=1, cooks_into_ice=1, falling_node=1}) do
-	groups[g] = v
-end
+
+
+-- This adds code to the existing, default snowblock. ~ LazyJ
 minetest.override_item("default:snowblock", {
-	liquidtype = "none",
-	paramtype = "light",
-	sunlight_propagates = true,
-	on_construct = snow_onto_dirt,
-	groups = groups,
-})
-
-minetest.override_item("default:snow", {
-	drop = {
-		max_items = 2,
-		items = {
-			{items = {'snow:moss'}, rarity = 20,},
-			{items = {'default:snow'},}
-		}
-	},
-	leveled = 7,
-	paramtype2 = "leveled",
-	node_box = {
-		type = "leveled",
-		fixed = {-0.5, -0.5, -0.5, 0.5, -0.5, 0.5},
-	},
-	collision_box = {
-		type = "leveled",
-		fixed = {-0.5, -0.5, -0.5, 0.5, -0.5, 0.5},
-	},
-	selection_box = {
-		type = "leveled",
-		fixed = {-0.5, -0.5, -0.5, 0.5, -0.5, 0.5},
-	},
-	groups = {cracky=3, crumbly=3, choppy=3, oddly_breakable_by_hand=3,
-		falling_node=1, melts=2, float=1},
-	sunlight_propagates = true,
-	walkable = true,
-	node_placement_prediction = "",
-	on_construct = function(pos)
-		pos.y = pos.y-1
-		local node = minetest.get_node(pos)
-		if node.name == "default:dirt_with_grass"
-		or node.name == "default:dirt" then
-			node.name = "default:dirt_with_snow"
-			minetest.set_node(pos, node)
-		end
-	end,
-	--Handle node drops due to node level.
-	on_dig = function(pos, node, digger)
-		local level = minetest.get_node_level(pos)
-		minetest.node_dig(pos, node, digger)
-		if minetest.get_node(pos).name ~= node.name then
-			local inv = digger:get_inventory()
-			if not inv then
-				return
-			end
-			local left = inv:add_item("main", "default:snow "..tostring(level/7-1))
-			if not left:is_empty() then
-				minetest.add_item({
-					x = pos.x + math.random()/2-0.25,
-					y = pos.y + math.random()/2-0.25,
-					z = pos.z + math.random()/2-0.25,
-				}, left)
-			end
-		end
-	end,
-	--Manage snow levels.
-	on_place = function(itemstack, player, pt)
-		local oldnode_under = minetest.get_node_or_nil(pt.under)
-		if not oldnode_under then
-			return itemstack, false
-		end
-
-		local olddef_under = minetest.registered_nodes[oldnode_under.name]
-		if not olddef_under then
-			return itemstack, false
-		end
-
-		-- If node under is buildable_to, place into it instead (eg. snow)
-		local pos, node
-		if olddef_under.buildable_to then
-			pos = pt.under
-			node = oldnode_under
-		else
-			pos = pt.above
-			node = minetest.get_node(pos)
-			local def = minetest.registered_nodes[node.name]
-			if not def
-			or not def.buildable_to then
-				return itemstack, false
-			end
-		end
-
-		-- nil player can place (for snowballs)
-		if player
-		and minetest.is_protected(pos, player:get_player_name()) then
-			return itemstack, false
-		end
-
-		if node.name ~= "default:snow" then
-			if minetest.get_node{x=pos.x, y=pos.y-1, z=pos.z}.name ==
-					"default:snow" then
-				-- grow the snow below (fixes levelled problem)
-				pos.y = pos.y - 1
-			else
-				-- place a snow
-				return minetest.item_place_node(itemstack, player, pt)
-			end
-		end
-
-		-- grow the snow
-		local level = minetest.get_node_level(pos)
-		level = level + 7
-		if level < 64 then
-			minetest.set_node_level(pos, level)
-		else
-			-- place a snowblock and snow onto it if possible
-			local p = {x=pos.x, y=pos.y+1, z=pos.z}
-			local def = minetest.registered_nodes[minetest.get_node(p).name]
-			if not def
-			or not def.buildable_to then
-				return itemstack, false
-			end
-
-			minetest.set_node(pos, {name="default:snowblock"})
-			minetest.set_node(p, {name="default:snow"})
-			level = math.max(level - 64, 7)
-			minetest.set_node_level(p, level)
-		end
-
-		itemstack:take_item()
-		return itemstack, true
-	end,
-	on_use = snow.shoot_snowball
+	liquidtype = "none", -- LazyJ to make dirt below change to dirt_with_snow (see default, nodes.lua, dirt ABM)
+	paramtype = "light",  -- LazyJ to make dirt below change to dirt_with_snow (see default, nodes.lua, dirt ABM)
+	sunlight_propagates = true, -- LazyJ to make dirt below change to dirt_with_snow (see default, nodes.lua, dirt ABM)
+	 -- Snow blocks should be easy to dig because they are just fluffy snow. ~ LazyJ
+	groups = {cracky=3, crumbly=3, choppy=3, oddly_breakable_by_hand=3, melts=1, icemaker=1, cooks_into_ice=1, falling_node=1},
+	--drop = "snow:snow_cobble",
+	on_construct = snow_onto_dirt
+		-- Thinking in terms of layers, dirt_with_snow could also double as
+		-- dirt_with_frost which adds subtlety to the winterscape. ~ LazyJ, 2014_04_04
 })

src/sled.lua

@@ -53,6 +53,8 @@ than I originally planned. :p  ~ LazyJ
 -- Helper functions
 --
 
+vector.zero = vector.zero or {x=0, y=0, z=0}
+
 local function table_find(t, v)
 	for i = 1,#t do
 		if t[i] == v then
@@ -81,7 +83,7 @@ local sled = {
 
 local players_sled = {}
 local function join_sled(self, player)
-	local pos = self.object:get_pos()
+	local pos = self.object:getpos()
 	player:setpos(pos)
 	local name = player:get_player_name()
 	players_sled[name] = true
@@ -89,7 +91,7 @@ local function join_sled(self, player)
 	default.player_set_animation(player, "sit" , 30)
 	self.driver = name
 	self.object:set_attach(player, "", {x=0,y=-9,z=0}, {x=0,y=90,z=0})
-	self.object:set_yaw(player:get_look_yaw())-- - math.pi/2)
+	self.object:setyaw(player:get_look_yaw())-- - math.pi/2)
 end
 
 local function leave_sled(self, player)
@@ -127,7 +129,7 @@ local function sled_rightclick(self, player)
 		position = {x=0.5, y=0.89},
 		name = "sled",
 		scale = {x=2, y=2},
-		text = "You are on the sled! Hold the sneak key to get off the sled.", -- LazyJ
+		text = "You are on the sled! Press the sneak key to get off the sled.", -- LazyJ
 		direction = 0,
 	})
 -- End part 1
@@ -154,9 +156,9 @@ function sled:on_rightclick(player)
 	on_sled_click(self, player)
 end
 
-function sled:on_activate(staticdata)
+function sled:on_activate(staticdata, dtime_s)
 	self.object:set_armor_groups({immortal=1})
-	self.object:set_acceleration({x=0, y=-10, z=0})
+	self.object:setacceleration({x=0, y=-10, z=0})
 	if staticdata then
 		self.v = tonumber(staticdata)
 	end
@@ -200,7 +202,7 @@ function sled:on_step(dtime)
 		return
 	end
 	if player:get_player_control().sneak
-	or not accelerating_possible(vector.round(self.object:get_pos())) then
+	or not accelerating_possible(vector.round(self.object:getpos())) then
 		leave_sled(self, player)
 	end
 end
@@ -220,7 +222,7 @@ minetest.register_craftitem("snow:sled", {
 		if players_sled[placer:get_player_name()] then
 			return
 		end
-		local pos = placer:get_pos()
+		local pos = placer:getpos()
 		if accelerating_possible(vector.round(pos)) then
 			pos.y = pos.y+0.5
 

src/snowball.lua

@@ -6,13 +6,13 @@
 -- Quite a bit of trial-and-error learning here and it boiled down to a
 -- small handful of code lines making the difference. ~ LazyJ
 
-local creative_mode = minetest.settings:get_bool"creative_mode"
+local creative_mode = minetest.setting_getbool("creative_mode")
 
 
 local snowball_velocity, entity_attack_delay
 local function update_snowball_vel(v)
 	snowball_velocity = v
-	local walkspeed = tonumber(minetest.settings:get"movement_speed_walk") or 4
+	local walkspeed = tonumber(minetest.setting_get("movement_speed_walk")) or 4
 	entity_attack_delay = (walkspeed+1)/v
 end
 update_snowball_vel(snow.snowball_velocity)
@@ -27,23 +27,23 @@ snow.register_on_configuring(function(name, v)
 end)
 
 local function get_gravity()
-	local grav = tonumber(minetest.settings:get"movement_gravity") or 9.81
+	local grav = tonumber(minetest.setting_get("movement_gravity")) or 9.81
 	return grav*snowball_gravity
 end
 
 local someone_throwing, just_acitvated
 
 --Shoot snowball
-function snow.shoot_snowball(item, player)
+local function snow_shoot_snowball(item, player)
 	local addp = {y = 1.625} -- + (math.random()-0.5)/5}
 	local dir = player:get_look_dir()
 	local dif = 2*math.sqrt(dir.z*dir.z+dir.x*dir.x)
 	addp.x = dir.z/dif -- + (math.random()-0.5)/5
 	addp.z = -dir.x/dif -- + (math.random()-0.5)/5
-	local pos = vector.add(player:get_pos(), addp)
+	local pos = vector.add(player:getpos(), addp)
 	local obj = minetest.add_entity(pos, "snow:snowball_entity")
-	obj:set_velocity(vector.multiply(dir, snowball_velocity))
-	obj:set_acceleration({x=dir.x*-3, y=-get_gravity(), z=dir.z*-3})
+	obj:setvelocity(vector.multiply(dir, snowball_velocity))
+	obj:setacceleration({x=dir.x*-3, y=-get_gravity(), z=dir.z*-3})
 	obj:get_luaentity().thrower = player:get_player_name()
 	if creative_mode then
 		if not someone_throwing then
@@ -64,7 +64,7 @@ if creative_mode then
 				local item = player:get_wielded_item()
 				local itemname = item:get_name()
 				if itemname == "default:snow" then
-					snow.shoot_snowball(nil, player)
+					snow_shoot_snowball(nil, player)
 					active = true
 					break
 				end
@@ -103,25 +103,25 @@ local snow_snowball_ENTITY = {
 
 function snow_snowball_ENTITY.on_activate(self)
 	self.object:set_properties({textures = {"default_snowball.png^[transform"..math.random(0,7)}})
-	self.object:set_acceleration({x=0, y=-get_gravity(), z=0})
-	self.lastpos = self.object:get_pos()
+	self.object:setacceleration({x=0, y=-get_gravity(), z=0})
+	self.lastpos = self.object:getpos()
 	minetest.after(0.1, function(obj)
 		if not obj then
 			return
 		end
-		local vel = obj:get_velocity()
+		local vel = obj:getvelocity()
 		if vel
 		and vel.y ~= 0 then
 			return
 		end
-		minetest.after(0, function(object)
-			if not object then
+		minetest.after(0, function(obj)
+			if not obj then
 				return
 			end
-			local vel_obj = object:get_velocity()
-			if not vel_obj
-			or vel_obj.y == 0 then
-				object:remove()
+			local vel = obj:getvelocity()
+			if not vel
+			or vel.y == 0 then
+				obj:remove()
 			end
 		end, obj)
 	end, self.object)
@@ -129,40 +129,22 @@ end
 
 --Snowball_entity.on_step()--> called when snowball is moving.
 function snow_snowball_ENTITY.on_step(self, dtime)
-	self.timer = self.timer + dtime
-	if self.timer > 10 then
-		-- 10 seconds is too long for a snowball to fly somewhere
+	self.timer = self.timer+dtime
+	if self.timer > 600 then
+		-- 10 minutes are too long for a snowball to fly somewhere
 		self.object:remove()
 		return
 	end
 
 	if self.physical then
-		local vel = self.object:get_velocity()
-		local fell = vel.y == 0
+		local fell = self.object:getvelocity().y == 0
 		if not fell then
-			if self.probably_stuck then
-				self.probably_stuck = nil
-			end
 			return
 		end
-		if self.probably_stuck
-		and vel.x == 0
-		and vel.z == 0 then
-			-- add a small velocity to move it from the corner
-			vel.x = math.random() - 0.5
-			vel.z = math.random() - 0.5
-			self.object:set_velocity(vel)
-			self.probably_stuck = nil
-			return
-		end
-		local pos = vector.round(self.object:get_pos())
+		local pos = vector.round(self.object:getpos())
 		if minetest.get_node(pos).name == "air" then
 			pos.y = pos.y-1
 			if minetest.get_node(pos).name == "air" then
-				if vel.x == 0
-				and vel.z == 0 then
-					self.probably_stuck = true
-				end
 				return
 			end
 		end
@@ -171,16 +153,16 @@ function snow_snowball_ENTITY.on_step(self, dtime)
 		return
 	end
 
-	local pos = vector.round(self.object:get_pos())
+	local pos = vector.round(self.object:getpos())
 	if vector.equals(pos, self.lastpos) then
 		return
 	end
 	if minetest.get_node(pos).name ~= "air" then
-		self.object:set_acceleration({x=0, y=-get_gravity(), z=0})
-		--self.object:set_velocity({x=0, y=0, z=0})
+		self.object:setacceleration({x=0, y=-get_gravity(), z=0})
+		--self.object:setvelocity({x=0, y=0, z=0})
 		pos = self.lastpos
 		self.object:setpos(pos)
-		minetest.sound_play("default_snow_footstep", {pos=pos, gain=vector.length(self.object:get_velocity())/30})
+		minetest.sound_play("default_snow_footstep", {pos=pos, gain=vector.length(self.object:getvelocity())/30})
 		self.object:set_properties({physical = true})
 		self.physical = true
 		return
@@ -191,16 +173,13 @@ function snow_snowball_ENTITY.on_step(self, dtime)
 		return
 	end
 	for _,v in pairs(minetest.get_objects_inside_radius(pos, 1.73)) do
-		local entity = v:get_luaentity()
-		if v ~= self.object
-		and entity then
-			local entity_name = entity.name
-			if v:is_player()
-			or (entity_name ~= "snow:snowball_entity"
+		if v ~= self.object then
+			local entity_name = v:get_entity_name()
+			if entity_name ~= "snow:snowball_entity"
 			and entity_name ~= "__builtin:item"
-			and entity_name ~= "gauges:hp_bar") then
-				local vvel = v:get_velocity() or v:get_player_velocity()
-				local veldif = self.object:get_velocity()
+			and entity_name ~= "gauges:hp_bar" then
+				local vvel = v:getvelocity() or v:get_player_velocity()
+				local veldif = self.object:getvelocity()
 				if vvel then
 					veldif = vector.subtract(veldif, vvel)
 				end
@@ -212,15 +191,7 @@ function snow_snowball_ENTITY.on_step(self, dtime)
 					{full_punch_interval=1, damage_groups = {fleshy=math.ceil(gain)}}
 				)
 				minetest.sound_play("default_snow_footstep", {pos=pos, gain=gain})
-
-				-- spawn_falling_node
-				local obj = minetest.add_entity(pos, "__builtin:falling_node")
-				if obj then
-					obj:get_luaentity():set_node{name = "default:snow"}
-				else
-					minetest.log("error", "Couldn't spawn falling node")
-				end
-
+				spawn_falling_node(pos, {name = "default:snow"})
 				self.object:remove()
 				return
 			end
@@ -265,16 +236,11 @@ minetest.register_node(":default:snow", {
 		dug = {name="default_snow_footstep", gain=0.75},
 	}),
 	on_construct = function(pos)
-		if minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name
-		== "default:dirt_with_grass"
-		or minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name == "default:dirt" then
+		if minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name == "default:dirt_with_grass" or minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name == "default:dirt" then
 			minetest.set_node({x=pos.x, y=pos.y-1, z=pos.z}, {name="default:dirt_with_snow"})
 		end
 		-- Now, let's turn the snow pile into a snowblock. ~ LazyJ
-		if minetest.get_node({x=pos.x, y=pos.y-2, z=pos.z}).name == "default:snow"
-		and -- Minus 2 because at the end of this, the layer that triggers
-		--the change to a snowblock is the second layer more than a full block,
-		--starting into a second block (-2) ~ LazyJ, 2014_04_11
+		if minetest.get_node({x=pos.x, y=pos.y-2, z=pos.z}).name == "default:snow" and -- Minus 2 because at the end of this, the layer that triggers the change to a snowblock is the second layer more than a full block, starting into a second block (-2) ~ LazyJ, 2014_04_11
 			minetest.get_node({x=pos.x, y=pos.y, z=pos.z}).name == "default:snow" then
 			minetest.set_node({x=pos.x, y=pos.y-2, z=pos.z}, {name="default:snowblock"})
 		end
@@ -285,6 +251,97 @@ minetest.register_node(":default:snow", {
 
 
 
+minetest.override_item("default:snow", {
+	drop = {
+		max_items = 2,
+		items = {
+			{items = {'snow:moss'}, rarity = 20,},
+			{items = {'default:snow'},}
+		}
+	},
+	leveled = 7,
+	node_box = {
+		type = "leveled",
+		fixed = {
+			{-0.5, -0.5, -0.5, 0.5, -0.5, 0.5},
+		},
+	},
+	groups = {cracky=3, crumbly=3, choppy=3, oddly_breakable_by_hand=3, falling_node=1, melts=2, float=1},
+	sunlight_propagates = true,
+	--Disable placement prediction for snow.
+ 	node_placement_prediction = "",
+	on_construct = function(pos)
+		pos.y = pos.y-1
+		local node = minetest.get_node(pos)
+		if node.name == "default:dirt_with_grass"
+		or node.name == "default:dirt" then
+			node.name = "default:dirt_with_snow"
+			minetest.set_node(pos, node)
+		end
+	end,
+	--Handle node drops due to node level.
+	on_dig = function(pos, node, digger)
+		local level = minetest.get_node_level(pos)
+		minetest.node_dig(pos, node, digger)
+		if minetest.get_node(pos).name ~= node.name then
+			local inv = digger:get_inventory()
+			if not inv then
+				return
+			end
+			local left = inv:add_item("main", "default:snow "..tostring(level/7-1))
+			if not left:is_empty() then
+				minetest.add_item({
+					x = pos.x + math.random()/2-0.25,
+					y = pos.y + math.random()/2-0.25,
+					z = pos.z + math.random()/2-0.25,
+				}, left)
+			end
+		end
+	end,
+	--Manage snow levels.
+	on_place = function(itemstack, placer, pointed_thing)
+		local under = pointed_thing.under
+		local oldnode_under = minetest.get_node_or_nil(under)
+		local above = pointed_thing.above
+
+		if not oldnode_under
+		or not above then
+			return
+		end
+
+		local olddef_under = ItemStack({name=oldnode_under.name}):get_definition()
+		olddef_under = olddef_under or minetest.nodedef_default
+
+		local place_to
+		-- If node under is buildable_to, place into it instead (eg. snow)
+		if olddef_under.buildable_to then
+			place_to = under
+		else
+			-- Place above pointed node
+			place_to = above
+		end
+
+		local level = minetest.get_node_level(place_to)
+		if level == 63 then
+			minetest.set_node(place_to, {name="default:snowblock"})
+		else
+			minetest.set_node_level(place_to, level+7)
+		end
+
+		if minetest.get_node(place_to).name ~= "default:snow" then
+			local itemstack, placed = minetest.item_place_node(itemstack, placer, pointed_thing)
+			return itemstack, placed
+		end
+
+		itemstack:take_item()
+
+		return itemstack
+	end,
+	on_use = snow_shoot_snowball
+})
+
+
+
 --[[
 A note about default torches, melting, and "buildable_to = true" in default snow.
 

src/stairs.lua

@@ -1,101 +0,0 @@
-local snow_nodes = {
-	snow    = { "ice_brick", "snow_brick", "snow_cobble" },
-	default = { "ice", "snowblock" }
-}
-
-if minetest.get_modpath("moreblocks") and
-	 minetest.global_exists("stairsplus") then
-
-	-- For users converting from MTG stairs to stairsplus, these nodes are aliased
-	-- from the stairs namespace to their source mod.
-	local was_in_stairs = {
-		ice_brick   = true,
-		snow_brick  = true,
-		snow_cobble = true,
-		ice = false,        -- moreblocks will take care of this one, and
-		snowblock = false,  -- this one, because they are in the default namespace.
-	}
-
-	-- Some nodes were incorrectly placed into the snow namespace.  Alias these to
-	-- their proper namespace (default).
-	local was_in_snow = {
-		ice_brick   = false,
-		snow_brick  = false,
-		snow_cobble = false,
-		ice = true,
-		snowblock = true,
-	}
-
-	-- Some nodes were incorrectly placed into the moreblocks namespace.  Alias
-	-- these to their proper namespace (either snow or default).
-	local was_in_moreblocks = {
-		ice_brick   = false,
-		snow_brick  = true,
-		snow_cobble = true,
-		ice = true,
-		snowblock = true,
-	}
-
-	for mod, nodes in pairs(snow_nodes) do
-		for _, name in pairs(nodes) do
-			local nodename = mod .. ":" .. name
-			local ndef = table.copy(minetest.registered_nodes[nodename])
-			ndef.sunlight_propagates = true
-			ndef.groups.melts = 2
-			ndef.groups.icemaker = nil
-			ndef.groups.cooks_into_ice = nil
-			ndef.after_place_node = nil
-			if string.find(name, "ice") then
-				ndef.use_texture_alpha = "blend"
-			else
-				ndef.use_texture_alpha = "opaque"
-			end
-			stairsplus:register_all(mod, name, nodename, ndef)
-
-			if was_in_stairs[name] then
-				minetest.register_alias("stairs:stair_" .. name, mod .. ":stair_" .. name)
-				minetest.register_alias("stairs:slab_"  .. name, mod .. ":slab_"  .. name)
-			end
-
-			if was_in_snow[name] then
-				minetest.register_alias("snow:stair_" .. name, mod .. ":stair_" .. name)
-				minetest.register_alias("snow:slab_"  .. name, mod .. ":slab_"  .. name)
-			end
-
-			if was_in_moreblocks[name] then
-				stairsplus:register_alias_all("moreblocks", name, mod, name)
-			end
-		end
-	end
-
-elseif minetest.global_exists("stairs") then -- simple stairs and slabs only
-	for mod, nodes in pairs(snow_nodes) do
-		for _, name in pairs(nodes) do
-			local nodename   = mod .. ":" .. name
-			local ndef = table.copy(minetest.registered_nodes[nodename])
-
-			local desc_stair = ndef.description .. " Stair"
-			local desc_slab  = ndef.description .. " Slab"
-			local images = ndef.tiles
-			local sounds = ndef.sounds
-
-			local groups = ndef.groups
-			groups.melts = 2
-			groups.icemaker = nil
-			groups.cooks_into_ice = nil
-
-			stairs.register_stair_and_slab(name, nodename,
-				groups, images, desc_stair, desc_slab, sounds)
-
-			-- Add transparency if used (e.g. ice and ice_brick).
-			minetest.override_item("stairs:stair_" .. name,
-				{use_texture_alpha = ndef.use_texture_alpha})
-			minetest.override_item("stairs:slab_"  .. name,
-				{use_texture_alpha = ndef.use_texture_alpha})
-
-			-- Alias all stairs and slabs from snow to the stairs namespace.
-			minetest.register_alias("snow:stair_" .. name, "stairs:stair_" .. name)
-			minetest.register_alias("snow:slab_"  .. name, "stairs:slab_"  .. name)
-		end
-	end
-end

src/stairsplus.lua

@@ -0,0 +1,342 @@
+-- ===============================================================================
+-- StairsPlus Bonus!
+-- ===============================================================================
+--[[
+This section of code that makes blocks compatible with MoreBlocks' circular saw.
+I've added circular saw compatible code for default snowblocks and ice. :D
+A big thanks to Calinou and ShadowNinja for making this possible.
+
+Because StairsPlus creates partial blocks, it didn't seem quite right that the
+smallest microblocks would produce a full-sized water_source node when melted.
+So I toned them down a bit by changing their melt to a temporary,
+2-second water_source. See "melts" in abms.lua file for the various intensities.
+
+___...::: ATTENTION MINETEST SERVER OPERATORS :::...___
+You may or may not have noticed in your server logs that MoreBlocks stairs/slabs/
+panels/microblocks are not recorded as to when, who, what, and where. This is
+important information when trying to determine if a player who dug these blocks
+is the owner (the player who placed the block) or is a griefer stealing the block.
+
+There is an option that will log when these blocks are placed but it comes at the
+cost of losing the auto-rotation of those blocks when placed. They can still be
+rotated with a screwdriver but if screwdrivers are disabled on your server your
+players won't be able to position MoreBlocks, saw-made blocks.
+
+To enable logging the placement of these blocks, un-comment these lines:
+
+--on_place = minetest.item_place
+
+There is one in each of the "stairsplus.register_all" sections.
+
+~ LazyJ
+-- ===============================================================================
+--]]
+
+--snow_stairsplus = {}
+
+-- Check for infinite stacks
+
+--if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
+--	snow_stairsplus.expect_infinite_stacks = false
+--else
+--	snow_stairsplus.expect_infinite_stacks = true
+--end
+
+
+
+
+
+
+-- First, let's run a check to see if MoreBlocks is installed; we're going to need it for the
+-- next section of stairsplus stuff. ~LazyJ
+
+if (minetest.get_modpath("moreblocks"))
+and rawget(_G, "stairsplus")
+
+-- 'If' MoreBlocks was found and stairsplus is available, well, 'then' go ahead with this next part:
+
+then
+
+--[[  Leave commented out - For reference only. ~ LazyJ
+function stairsplus.register_all(modname, subname, recipeitem, fields)
+		--stairsplus.register_stair_slab_panel_micro(modname, subname, recipeitem, fields)
+		stairsplus:register_stair(modname, subname, recipeitem, fields)
+		stairsplus:register_slab(modname, subname, recipeitem, fields)
+		stairsplus:register_panel(modname, subname, recipeitem, fields)
+		stairsplus:register_micro(modname, subname, recipeitem, fields)
+end
+  Leave commented out
+--]]
+
+
+
+-- Leave commented out. Another, possible piece of the puzzle, as to why the placement of
+-- stairsplus nodes aren't recorded in the logs. Shelved till I can concentrate on it again.
+-- ~ LazyJ
+
+--ItemStack({name=nodename}):get_definition()
+--itemstack ={}
+--[[
+		local def = itemstack:get_definition()
+		function minetest.item_place_node(itemstack, placer, pointed_thing, param2)
+			minetest.log("action", placer:get_player_name() .. " places node "
+			.. def.name .. " at " .. minetest.pos_to_string(place_to))
+		end
+ Leave commented out
+--]]
+
+
+-- Leave commented out
+--[[   FIGURE OUT HOW TO GET THE SLABS TO SHOW UP IN THE LOG ON PLACEMENT
+
+
+			on_place = function(itemstack, placer, pointed_thing)
+						if pointed_thing.type ~= "node" then
+							return itemstack
+						end
+
+			-- If it's being placed on an another similar one, replace it with
+			-- a full block
+			local slabpos = nil
+			local slabnode = nil
+			local p0 = pointed_thing.under
+			local p1 = pointed_thing.above
+			local n0 = minetest.get_node(p0)
+			local n1 = minetest.get_node(p1)
+			local param2 = 0
+
+			local n0_is_upside_down = (n0.name == "snow:slab_" .. subname and
+					n0.param2 >= 20)
+
+			if n0.name == "snow:slab_" .. subname and not n0_is_upside_down and p0.y+1 == p1.y then
+				slabpos = p0
+				slabnode = n0
+			elseif n1.name == "snow:slab_" .. subname then
+				slabpos = p1
+				slabnode = n1
+			end
+			if slabpos then
+				-- Remove the slab at slabpos
+				minetest.remove_node(slabpos)
+				-- Make a fake stack of a single item and try to place it
+				local fakestack = ItemStack(recipeitem)
+				fakestack:set_count(itemstack:get_count())
+
+				pointed_thing.above = slabpos
+				local success
+				fakestack, success = minetest.item_place(fakestack, placer, pointed_thing)
+				-- If the item was taken from the fake stack, decrement original
+				if success then
+					itemstack:set_count(fakestack:get_count())
+				-- Else put old node back
+				else
+					minetest.set_node(slabpos, slabnode)
+				end
+				return itemstack
+			end
+
+			-- Upside down slabs
+			if p0.y-1 == p1.y then
+				-- Turn into full block if pointing at a existing slab
+				if n0_is_upside_down  then
+					-- Remove the slab at the position of the slab
+					minetest.remove_node(p0)
+					-- Make a fake stack of a single item and try to place it
+					local fakestack = ItemStack(recipeitem)
+					fakestack:set_count(itemstack:get_count())
+
+					pointed_thing.above = p0
+					local success
+					fakestack, success = minetest.item_place(fakestack, placer, pointed_thing)
+					-- If the item was taken from the fake stack, decrement original
+					if success then
+						itemstack:set_count(fakestack:get_count())
+					-- Else put old node back
+					else
+						minetest.set_node(p0, n0)
+					end
+					return itemstack
+				end
+
+				-- Place upside down slab
+				param2 = 20
+			end
+
+			-- If pointing at the side of a upside down slab
+			if n0_is_upside_down and p0.y+1 ~= p1.y then
+				param2 = 20
+			end
+
+			return minetest.item_place(itemstack, placer, pointed_thing, param2)
+		end
+ Leave commented out
+--]]
+
+
+
+--[[
+Below, in the "groups" line there is a "melts" category. Back in the ABMs lua file, melting
+code, melts=1 will produce a water_source when the full-sized snow/ice block is melted making
+a big, watery mess. melts=2 will produce a water_source only for a moment, then it changes back
+to water_flowing and then dries-up and disappears. I gave these stairs/slabs/panels/microblocks
+a melts value of 2 instead of 1 because they are not full blocks.
+
+~ LazyJ
+--]]
+
+-- Default snowblock and ice stairs/slabs/panels/microblocks.
+
+	local ndef = minetest.registered_nodes["default:ice"]
+	local groups = {}
+	for k, v in pairs(ndef.groups) do groups[k] = v end
+
+	stairsplus:register_all("moreblocks", "ice", "default:ice", {
+		description = ndef.description,
+		paramtype2 = "facedir",
+		-- Added "icemaker=1" in groups. This ties into the freezing
+		-- function in the ABMs.lua file. ~ LazyJ
+		groups = {cracky=1, crumbly=1, choppy=1, oddly_breakable_by_hand=1, melts=2, icemaker=1},
+		sounds = default.node_sound_glass_defaults(),
+		tiles = ndef.tiles,
+		-- Because of the "use_texture_alpha" line, that gives ice transparency, I couldn't combine
+		-- default ice and default snowblocks in a list like MoreBlocks does. ~ LazyJ
+		use_texture_alpha = true,
+		sunlight_propagates = true,
+		-- This "on_place" line makes placing these nodes recorded in the logs.
+		-- Useful for investigating griefings and determining ownership
+		-- BUT these nodes will nolonger auto-rotate into position. ~ LazyJ
+
+		--on_place = minetest.item_place,
+
+ 		-- The "on_construct" part below, thinking in terms of layers, dirt_with_snow could
+ 		-- also double as dirt_with_frost which adds subtlety to the winterscape. ~ LazyJ
+		on_construct = function(pos)
+			pos.y = pos.y - 1
+			if minetest.get_node(pos).name == "default:dirt_with_grass"
+			or minetest.get_node(pos).name == "default:dirt" then
+				minetest.set_node(pos, {name="default:dirt_with_snow"})
+			end
+		end
+	})
+--end
+
+
+	local ndef = minetest.registered_nodes["default:snowblock"]
+	local groups = {}
+	for k, v in pairs(ndef.groups) do groups[k] = v end
+
+	stairsplus:register_all("moreblocks", "snowblock", "default:snowblock", {
+		description = ndef.description,
+		paramtype2 = "facedir",
+		-- Added "icemaker=1" in groups. This ties into the freezing function
+		-- in the ABMs.lua file. ~ LazyJ
+		groups = {cracky=3, crumbly=3, choppy=3, oddly_breakable_by_hand=3, melts=2, icemaker=1},
+		tiles = ndef.tiles,
+		sunlight_propagates = true,
+		sounds = default.node_sound_dirt_defaults({
+			footstep = {name="default_snow_footstep", gain=0.25},
+			dig = {name="default_dig_crumbly", gain=0.4},
+			dug = {name="default_snow_footstep", gain=0.75},
+			place = {name="default_place_node", gain=1.0}
+		}),
+		-- This "on_place" line makes placing these nodes recorded in the logs.
+		-- Useful for investigating griefings and determining ownership
+		-- BUT these nodes will nolonger auto-rotate into position. ~ LazyJ
+
+		--on_place = minetest.item_place,
+
+ 		-- The "on_construct" part below, thinking in terms of layers,
+ 		-- dirt_with_snow could also double as dirt_with_frost
+ 		-- which adds subtlety to the winterscape. ~ LazyJ
+		on_construct = function(pos)
+			pos.y = pos.y - 1
+			if minetest.get_node(pos).name == "default:dirt_with_grass"
+			or minetest.get_node(pos).name == "default:dirt" then
+				minetest.set_node(pos, {name="default:dirt_with_snow"})
+			end
+		end
+	})
+
+
+
+-- Snow stairs/slabs/panels/microblocks.
+
+local snow_nodes = {
+	"snow_brick",
+	"snow_cobble",
+}
+
+for _, name in pairs(snow_nodes) do
+	local nodename = "snow:"..name
+	local ndef = minetest.registered_nodes[nodename]
+	local groups = {}
+	for k, v in pairs(ndef.groups) do groups[k] = v end
+
+	stairsplus:register_all("moreblocks", name, nodename, {
+		description = ndef.description,
+		drop = ndef.drop,
+		groups = {cracky=2, crumbly=2, choppy=2, oddly_breakable_by_hand=2, melts=2, icemaker=1},
+		tiles = ndef.tiles,
+		--paramtype2 = "facedir",
+		sunlight_propagates = true,
+		sounds = default.node_sound_dirt_defaults({
+			footstep = {name="default_snow_footstep", gain=0.25},
+			dig = {name="default_dig_crumbly", gain=0.4},
+			dug = {name="default_snow_footstep", gain=0.75},
+			place = {name="default_place_node", gain=1.0}
+		}),
+		-- This "on_place" line makes placing these nodes recorded in the logs.
+		-- Useful for investigating griefings and determining ownership
+		-- BUT these nodes will nolonger auto-rotate into position. ~ LazyJ
+
+		--on_place = minetest.item_place,
+
+
+-- Some attempts to have both, the recording in the logs of the placing of
+-- the stairplus stuff *and* have the auto-rotation work. No luck yet.
+-- ~ LazyJ
+
+		--[[
+		on_place = function (i, p, t)
+			minetest.item_place(i, p, t, 0)
+			minetest.rotate_node(i, p, t)
+		end,
+		--]]
+		--[[
+		on_place = function (i, p, t)
+			minetest.rotate_node(i, p, t, 0)
+			minetest.item_place(i, p, t)
+		end,
+		--]]
+
+
+
+-- Picking up were we left off... ~ LazyJ
+
+ 		-- The "on_construct" part below, thinking in terms of layers, dirt_with_snow could
+ 		-- also double as dirt_with_frost which adds subtlety to the winterscape. ~ LazyJ
+		on_construct = function(pos)
+			pos.y = pos.y - 1
+			if minetest.get_node(pos).name == "default:dirt_with_grass"
+				or minetest.get_node(pos).name == "default:dirt"
+				then minetest.set_node(pos, {name="default:dirt_with_snow"})
+			end
+			-- Some ideas I've tried. Leaving for future reference till I can figure out a workable solution. ~ LazyJ
+			--minetest.log("action", sender:get_player_name().." places" ..minetest.get_node(pos).name.. "at" ..minetest.pos_to_string(pos))
+			--minetest.log("action", minetest.get_player_name().." places" ..minetest.get_node(pos).name.. "at" ..minetest.pos_to_string(pos))
+			--minetest.log("action", "BINGO places "..minetest.get_name().." at "..minetest.pos_to_string(pos))
+			--minetest.log("action", minetest.get_player_name().." places "..minetest.get_name().." at "..minetest.pos_to_string(pos))
+			--minetest.log("action", placer:get_player_name().." places moreblocks-something at "..minetest.pos_to_string(pos))
+			--minetest.log("action", " BINGO places "..minetest.get_pointed_thing().." at "..minetest.pos_to_string(pos))
+			--minetest.log("action", "BINGO places moreblocks"..ndef.." at "..minetest.pos_to_string(pos))
+			--minetest.log("action", "A pine sapling grows into a Christmas tree at "..minetest.pos_to_string(pos))
+			--return minetest.item_place(itemstack, placer, pointed_thing, param2)
+			--return minetest.item_place(itemstack, pointed_thing, param2)
+		end,
+	})
+end
+
+else  -- from clear up at the top, the MoreBlocks check. "Else", if MoreBlocks wasn't found, skip
+		-- down to here, "return" nothing and "end" this script. ~ LazyJ
+return
+end

src/util.lua

@@ -1,25 +1,38 @@
 --Global config and function table.
 snow = {
-	snowball_gravity = tonumber(minetest.settings:get("snow_snowball_gravity")) or 0.91,
-	snowball_velocity = tonumber(minetest.settings:get("snow_snowball_velocity")) or 19,
-	sleds = minetest.settings:get_bool("snow_sleds", true),
-	enable_snowfall = minetest.settings:get_bool("snow_enable_snowfall", true),
-	lighter_snowfall = minetest.settings:get_bool("snow_lighter_snowfall", false),
-	debug = minetest.settings:get_bool("snow_debug", false),
-	smooth_biomes = minetest.settings:get_bool("snow_smooth_biomes", true),
-	christmas_content = minetest.settings:get_bool("snow_christmas_content", true),
-	smooth_snow = minetest.settings:get_bool("snow_smooth_snow", true),
-	min_height = tonumber(minetest.settings:get("snow_min_height")) or 3,
-	mapgen_rarity = tonumber(minetest.settings:get("snow_mapgen_rarity")) or 18,
-	mapgen_size = tonumber(minetest.settings:get("snow_mapgen_size")) or 210,
-	disable_mapgen =  minetest.settings:get_bool("snow_disable_mapgen", true),
+	snowball_gravity = 100/109,
+	snowball_velocity = 19,
+	sleds = true,
+	enable_snowfall = true,
+	lighter_snowfall = false,
+	debug = false,
+	smooth_biomes = true,
+	christmas_content = true,
+	smooth_snow = true,
+	min_height = 3,
+	mapgen_rarity = 18,
+	mapgen_size = 210,
+}
+
+--Config documentation.
+local doc = {
+	snowball_gravity = "The gravity of thrown snowballs",
+	snowball_velocity = "How fast players throw snowballs",
+	sleds = "Disable this to prevent sleds from being riden.",
+	enable_snowfall = "Enables falling snow.",
+	lighter_snowfall = "Reduces the amount of resources and fps used by snowfall.",
+	debug = "Enables debug output. Currently it only prints mgv6 info.",
+	smooth_biomes = "Enables smooth transition of biomes (mgv6)",
+	smooth_snow = "Disable this to stop snow from being smoothed.",
+	christmas_content = "Disable this to remove christmas saplings from being found.",
+	min_height = "The minumum height a snow biome will generate (mgv7)",
+	mapgen_rarity = "mapgen rarity in %",
+	mapgen_size = "size of the generated… (has an effect to the rarity, too)",
 }
 
 
 -- functions for dynamically changing settings
 
-snow.register_on_configuring = function() end
---[[
 local on_configurings,n = {},1
 function snow.register_on_configuring(func)
 	on_configurings[n] = func
@@ -52,4 +65,164 @@ local function value_from_string(v)
 	end
 	return v
 end
---]]
+
+local allowed_types = {string = true, number = true, boolean = true}
+
+--Saves contents of config to file.
+local function saveConfig(path, config, doc)
+	local file = io.open(path,"w")
+	if not file then
+		minetest.log("error", "[snow] could not open config file for writing at "..path)
+		return
+	end
+	for i,v in pairs(config) do
+		if allowed_types[type(v)] then
+			if doc and doc[i] then
+				file:write("# "..doc[i].."\n")
+			end
+			file:write(i.." = "..tostring(v).."\n")
+		end
+	end
+	file:close()
+end
+
+local modpath = minetest.get_modpath("snow")
+
+minetest.register_on_shutdown(function()
+	saveConfig(modpath.."/config.txt", snow, doc)
+end)
+
+
+-- load settings from config.txt
+
+local config
+do
+	local path = modpath.."/config.txt"
+	local file = io.open(path,"r")
+	if not file then
+		--Create config file.
+		return
+	end
+	io.close(file)
+	config = {}
+	for line in io.lines(path) do
+		if line:sub(1,1) ~= "#" then
+			local i, v = line:match("^(%S*) = (%S*)")
+			if i and v then
+				config[i] = value_from_string(v)
+			end
+		end
+	end
+end
+
+if config then
+	for i,v in pairs(config) do
+		if type(snow[i]) == type(v) then
+			snow[i] = v
+		else
+			minetest.log("error", "[snow] wrong type of setting "..i)
+		end
+	end
+else
+	saveConfig(modpath.."/config.txt", snow, doc)
+end
+
+
+-- load settings from minetest.conf
+
+for i,v in pairs(snow) do
+	if allowed_types[type(v)] then
+		local v = minetest.setting_get("snow_"..i)
+		if v ~= nil then
+			snow[i] = value_from_string(v)
+		end
+	end
+end
+
+
+--MENU
+
+local function form_sort_func(a,b)
+	return a[1] < b[1]
+end
+
+--[[
+local function form_sort_func_bool(a,b)
+	if a[2] == b[2] then
+		return a[1] < b[1]
+	else
+		return b[2]
+	end
+end--]]
+
+local function get_formspec()
+	local ids,n1,n2 = {{},{}},1,1
+	for i,v in pairs(snow) do
+		local t = type(v)
+		if t == "string"
+		or t == "number" then
+			ids[2][n2] = {i,v}
+			n2 = n2+1
+		elseif t == "boolean" then
+			ids[1][n1] = {i,v}
+			n1 = n1+1
+		end
+	end
+	table.sort(ids[2], form_sort_func)
+	table.sort(ids[1], form_sort_func)
+
+	local p = -0.5
+	local formspec = "label[0,-0.3;Settings:]"
+	for n = 1,n1-1 do
+		local i,v = unpack(ids[1][n])
+		p = p + 0.5
+		formspec = formspec.."checkbox[0,"..p..";snow:"..i..";"..i..";"..tostring(v).."]"
+	end
+	for n = 1,n2-1 do
+		local i,v = unpack(ids[2][n])
+		p = p + 1.5
+		formspec = formspec.."field[0.3,"..p..";2,1;snow:"..i..";"..i..";"..v.."]"
+	end
+	p = p + 1
+	formspec = "size[4,"..p..";]\n"..formspec
+	return formspec
+end
+
+minetest.register_chatcommand("snow", {
+	description = "Show a menu for various actions",
+	privs = {server=true},
+	func = function(name)
+		minetest.chat_send_player(name, "Showing snow menu…")
+		minetest.show_formspec(name, "snow:menu", get_formspec())
+	end,
+})
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "snow:menu" then
+		return
+	end
+	for i,v in pairs(snow) do
+		local t = type(v)
+		if allowed_types[t] then
+			local field = fields["snow:"..i]
+			if field then
+				if t == "number" then
+					field = tonumber(field)
+				elseif t == "boolean" then
+					if field == "true" then
+						field = true
+					elseif field == "false" then
+						field = false
+					else
+						field = nil
+					end
+				elseif t ~= "string" then
+					field = nil
+				end
+				if field ~= nil then
+					change_setting(i, field)
+				end
+			end
+		end
+	end
+end)