So far, disable snow mapgen from snow

mods/snow/.gitignore

@@ -0,0 +1,3 @@
+config.txt
+debug.txt
+*~

mods/snow/LazyJ-changelog.txt

@@ -0,0 +1,162 @@
+~ LazyJ, 2014_06_01
+
+~~~~~~~~~~~~~~~~~~~~
+List of Changes
+~~~~~~~~~~~~~~~~~~~~
+
+
+
+##### MapGen
+
+I did *not* fix Snow's mapgen issue with "PlantLife" (another great, Minetest
+standard) based mods. Mapgen stuff is far beyond my current skill level.
+What little changes I did make were to switch-out Snow nodes that Minetest
+now has as defaults (dirt_with_snow, snow, ice). My thoughts being that
+texture packs and other mods that may use these nodes as recipe items are more
+likely to support default nodes. I also added a line above and below in the
+"mapgen.lua" file indicating where to put the comment symbols to
+comment-out/disable Snow's mapgen. Mods based on VanessaE's excellent
+"PlantLife" mod will not produce if Snow's mapgen is active.
+*Snow's mapgen is active by default.*
+I did not disable it, merely indicated were the comment symbols are
+to be placed. To compensate for the loss of snow resources when Snow's mapgen
+is disabled, I created crafting recipes that allows players to craft more
+snow, ice, and moss. This not only encourages snow builds, but also allows
+the players to create snow biomes where they want and whatever size they are
+willing to make them.
+
+
+##### Fixed
+	* Pine saplings are now replaced with tree trunks when the tree grows.
+	* Snowballs no longer pass through solid objects. Griefers can no
+	longer flood the interiors of builds by throwing snowballs through the
+	walls hoping to either leave a snowy mess inside or that a heat source
+	would melt the snow and flood the interior.
+	* Snowballs no longer destroy nodes when thrown at the sides.
+	* Falling snow no longer destroys nodes (same problem snowballs had).
+	* Snow bricks now, instead of disappearing like before, melt
+	into water sources.
+	* Christmas tree saplings once again will drop when pine needles
+	are harvested.
+	* Dirt_with_snow changes to dirt when a solid, non-light permeating
+	(sunlight_propagates) block is set on top of it.
+
+
+
+##### Changed
+	* All snow and ice stuff (including the stairs, slabs, panels, and
+	microblocks) will freeze dirt and dirt_with_grass into dirt_with_snow.
+	* All snow and most ice stuff will freeze water into ice, including
+	the stairs, slabs, panels, and microblocks. The exception is the
+	full-sized ice blocks will *not* freeze water into ice.
+	* Snow brick texture reworked and based off of the default stone brick
+	texture (and less purple in the grout).
+	* Ice stuff is now semi-transparent.
+	* Christmas trees now have blinking lights that give off a
+	low level of light.
+	* Christmas tree stars now give off a high level of light and the
+	light can be punched on or off.
+	* Combined default snow and snowballs. Now snow can be
+	thrown (left-click) or placed (right-click). 
+	* Snow stuff now has "snow" sounds instead of "grass" sounds.
+	* Melting - Full-sized snow blocks, snow brick, snow cobble, and ice
+	will melt into water sources. The down-side is this makes a big,
+	permanent mess. The up-side, this is a convenient way to carry water,
+	if buckets are disabled on your server, by keeping full-sized snow
+	stuff and ice blocks in your inventory to, later, melt where you
+	need water.
+	* Melting - Partial and small-sized blocks like snow (snowballs),
+	basic stairs and slabs for snow stuff and ice, and circular saw-made
+	snow stuff and ice things will melt into a water source for 2 seconds,
+	then switch from a water source to flowing water, and after a moment
+	the flowing water dries-up (small, temporary mess).
+
+
+
+##### Added
+	* New block-type: "Snow Cobble". Just like regular cobble from regular
+	stone, snow cobble comes from digging snow blocks.
+	* All snow and ice blocks can be crafted into basic slabs and stairs.
+	The default slabs stack and change back into full-sized blocks
+	("More Blocks" slabs won't do this).
+	* Soft dependency on a recent release Calinou's MoreBlocks so all
+	snow and ice blocks are compatible with the circular saw. If you don't
+	have MoreBlocks installed, Snow will ignore the code for those fancy
+	blocks and use basic stairs and slabs instead.
+	* All snow and ice stuff works with the screwdriver.
+	* Crafting, recycling, and cooking recipes for snow blocks,
+	ice, and moss.
+		* Snow bricks craft-recycle back into 4 snow blocks.
+		* 2 snow blocks craft into 3 snow blocks. This is to make up
+		for when the mapgen for snow biomes is disabled.
+		* 2 snow cobble craft-recycle into 3 snow blocks.
+		* 4 pine needles craft into 1 moss
+		* Snow blocks, snow cobble, and snow bricks can be cooked in a
+		furnace to make ice.
+	* Snowballs can be thrown (left-click) to build up layers. After the
+	11th layer, the bottom 9 layers change into a snow block. At a very
+	close distance, throwing snowballs can be used as a technique to
+	build-up gradual slopes. If you have lots and lots of snow balls,
+	with rapid-fire throwing, you can, very briefly, "white-out" another
+	player's view if your aim is good enough to hit them in the face.
+	* Snowballs can be placed (right-click) but will not stack into
+	multiple layers. Just one layer only. Placing snow is more reliable
+	and accurate than throwing snow from a distance. By placing snow,
+	players are able to create their own, personal, snow biomes.
+	* Vertical clearance check for tree growth. The nine blocks above the
+	spot where the sapling is placed must be free and clear of all
+	obstructions or else the sapling will not be allowed to grow.
+	Griefers could place the saplings in builds and when the tree grows
+	it may not destroy nodes but it fills the available air space leaving
+	a mess for the build's owner to clean-up. Now the trees will only grow
+	inside if there is 9, free-and-clear spaces from floor to ceiling.
+	Because pine trees (and Christmas trees) will grow on any solid surface,
+	their saplings are handy to take with you when deep mining. Just before
+	you run out of tool wood, dig out a space large enough for a tree to
+	grow, plant a pine or Christmas tree sapling then place 2 torches on
+	either side, right next to the sapling. After the tree grows harvest
+	the trunk for tool wood, the leaves for short-run fuel in the furnace
+	and for saplings to renew your tool wood supply again.
+	* Aliases to help make WorldEdit and "give" commands easier:
+			
+
+	"default_snow" = "default:snow"
+	"snowball" = "default:snow"
+	"snowballs" = "default:snow"
+	"snow_ball" = "default:snow"
+	"ice" = "default:ice"
+	"default_ice" = "default:ice"
+	"dirtwithsnow" = "default:dirt_with_snow"
+	"snowdirt" = "default:dirt_with_snow"
+	"snowydirt" = "default:dirt_with_snow"
+	"snowblocks" = "default:snowblock"
+	"snowbrick" = "snow:snow_brick"
+	"bricksnow" = "snow:snow_brick"
+	"snowbricks" = "snow:snow_brick"
+	"snowybricks" = "snow:snow_brick"
+	"snowcobble" = "snow:snow_cobble"
+	"snowycobble" = "snow:snow_cobble"
+	"cobblesnow" = "snow:snow_cobble"
+
+
+
+~~~~~~
+TODO
+~~~~~~
+
+Falling Snow:
+	* Add code to prevent snowfall from depositing snow on or near torches,
+active furnaces, and lava.
+
+	* Add code to prevent snowfall from depositing snow on
+'walkable = false' defined nodes.
+
+
+
+Sled:
+	* Figure out why the player avatars remain in a seated position,
+even after getting off the sled, if they flew while on the sled.
+'default.player_set_animation', where is a better explanation for this and what
+are it's available options?
+
+

mods/snow/changelog.txt

@@ -0,0 +1,67 @@
+CHANGELOG:
+------------
+
+Version 3.2
+
+	Update compatibility to the latest minetest.
+	
+Version 0.3.1
+
+	Paramat's rewrite of mapgenv6.lua: bugfixes, use noisemaps for big speed increase
+
+Version 3.0
+	LazyJ's big changes (see LazyJ-changelog.txt)
+	
+	Ice freezes-over.
+	
+	Better leveled snow.
+	
+	PLUS MORE! (see commit log)
+
+Version 2.0
+
+    Uses default namespace.
+    
+    Sleds.
+    
+    Bugfixes.
+    
+Version 1.8
+
+    Mapgen_v7 support.
+    
+    Better config system.
+    
+    Falling snow.
+
+Version 1.4
+
+    New biomes, snowy and plain
+    
+    Christmas Trees
+    
+    Snowfall
+    
+Version 1.3
+
+    Smooth transitions
+    
+    Snow Bricks
+
+Version 1.2
+
+    Pine trees
+    
+    Moss
+    
+    Alpine biomes
+	
+    Dry shrubs
+
+Version 1.1
+
+    Better mapgen
+
+Version 1.0
+
+    Initial release

mods/snow/depends.txt

@@ -0,0 +1,4 @@
+default
+flowers?
+moreblocks?
+watershed?

mods/snow/init.lua

@@ -0,0 +1,191 @@
+--[[
+--==============================
+--==========================================================
+LazyJ's Fork of Splizard's "Snow Biomes" Mod
+by LazyJ
+version: Umpteen-hundred and 7/5ths something or another.
+2014_04_12
+
+~~~
+
+"Snow Biomes" Mod
+By Splizard
+
+Download:
+http//forum.minetest.net/viewtopic.php?id=2290
+http://github.com/Splizard/minetest-mod-snow/
+
+--==========================================================
+--==============================
+
+   Snow Biomes
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+]]--
+
+
+
+-- Original Lua Files
+--dofile(minetest.get_modpath("snow").."/util.lua")
+--dofile(minetest.get_modpath("snow").."/mapgen.lua")
+--dofile(minetest.get_modpath("snow").."/sled.lua")
+-- "falling_snow.lua" disabled since weather functions minetest.get_heat(pos) and minetest.get_humidity(pos)
+-- have been removed from Minetest.
+--  Until something else can be figured out, use paramat's "Snowdrift" mod instead.
+-- dofile(minetest.get_modpath("snow").."/falling_snow.lua")
+
+-- Original init.lua File Broken into Smaller Files
+dofile(minetest.get_modpath("snow").."/src/abms.lua")
+dofile(minetest.get_modpath("snow").."/src/aliases.lua")
+dofile(minetest.get_modpath("snow").."/src/crafting.lua")
+dofile(minetest.get_modpath("snow").."/src/snowball.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(minetest.get_modpath("snow").."/src/util.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(minetest.get_modpath("snow").."/src/nodes.lua")
+dofile(minetest.get_modpath("snow").."/src/basic_stairs_slabs.lua")
+-- dofile(minetest.get_modpath("snow").."/src/mapgen.lua")
+dofile(minetest.get_modpath("snow").."/src/sled.lua")
+-- dofile(minetest.get_modpath("snow").."/src/falling_snow.lua")
+
+
+
+-- Check for "MoreBlocks". If not found, skip this next "dofile".
+
+if minetest.get_modpath("moreblocks") then
+
+	dofile(minetest.get_modpath("snow").."/src/stairsplus.lua")
+
+end
+
+--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)
+	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?
+	if not node
+	or not minetest.registered_nodes[node.name] then
+		return
+	end
+
+	local bnode = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
+	if node.name == "default:snow" then
+		local level = minetest.get_node_level(pos)
+		if level < 63 then
+			if minetest.get_item_group(bnode.name, "leafdecay") == 0
+			and not snow.is_uneven(pos) then
+				minetest.sound_play("default_snow_footstep", {pos=pos})
+				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
+				minetest.sound_play("default_grass_footstep", {pos=pos})
+				minetest.place_node({x=pos.x, y=pos.y+1, z=pos.z}, {name="default:snow"})
+			else
+				minetest.sound_play("default_snow_footstep", {pos=pos})
+				minetest.add_node(pos, {name="default:snowblock"})
+			end
+		end
+	elseif node.name ~= "default:ice"
+	and bnode.name ~= "air" then
+		local data = minetest.registered_nodes[node.name]
+		local drawtype = data.drawtype
+		if drawtype == "normal"
+		or drawtype == "allfaces_optional" then
+			pos.y = pos.y+1
+			local sound = data.sounds
+			if sound then
+				sound = sound.footstep
+				if sound then
+					minetest.sound_play(sound.name, {pos=pos, gain=sound.gain})
+				end
+			end
+			minetest.place_node(pos, {name="default:snow"})
+		elseif drawtype == "plantlike" then
+			pos.y = pos.y - 1
+			if minetest.get_node(pos).name == "default:dirt_with_grass" then
+				minetest.sound_play("default_grass_footstep", {pos=pos})
+				minetest.add_node(pos, {name="default:dirt_with_snow"})
+			end
+		end
+	end
+end
+
+-- Checks if the snow level is even at any given pos.
+-- Smooth Snow
+local function is_uneven(pos)
+	local num = minetest.get_node_level(pos)
+	local get_node = minetest.get_node
+	local add_node = minetest.add_node
+	local found
+	local foundx
+	local foundy
+	local foundz
+	for z = -1,1 do
+		for x = -1,1 do
+			local p = {x=pos.x+x, y=pos.y, z=pos.z+z}
+			local node = get_node(p)
+			p.y = p.y-1
+			local bnode = get_node(p)
+
+			if node
+			and minetest.registered_nodes[node.name]
+			and minetest.registered_nodes[node.name].drawtype == "plantlike"
+			and bnode.name == "default:dirt_with_grass" then
+				add_node(p, {name="default:dirt_with_snow"})
+				return true
+			end
+
+			p.y = p.y+1
+			if not (x == 0 and z == 0)
+			and node.name == "default:snow"
+			and minetest.get_node_level(p) < num then
+				found = true
+				foundx = x
+				foundz = z
+			elseif node.name == "air"
+			and bnode.name ~= "air"
+			and bnode.name ~= "default:snow" then
+				p.y = p.y-1
+				snow.place(p)
+				return true
+			end
+		end
+	end
+	if found then
+		local p = {x=pos.x+foundx, y=pos.y, z=pos.z+foundz}
+		if is_uneven(p) ~= true then
+			minetest.add_node_level(p, 7)
+		end
+		return true
+	end
+end
+
+function snow.is_uneven(pos)
+	if snow.smooth_snow then
+		return is_uneven(pos)
+	end
+end

mods/snow/license.txt

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+
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+software and other kinds of works.
+
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+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

mods/snow/models/sled.x

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mods/snow/other_textures/inkscape_default_ice.svg

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mods/snow/readme.txt

@@ -0,0 +1,103 @@
+   _____                       __  __           _ 
+  / ____|                     |  \/  |         | |
+ | (___  _ __   _____      __ | \  / | ___   __| |
+  \___ \| '_ \ / _ \ \ /\ / / | |\/| |/ _ \ / _` |
+  ____) | | | | (_) \ V  V /  | |  | | (_) | (_| |
+ |_____/|_| |_|\___/ \_/\_/   |_|  |_|\___/ \__,_|
+				
+					Version 3.2
+				
+By Splizard and LazyJ.
+
+Minetest version:  0.4.9
+Depends: default
+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
+Github: https://github.com/Splizard/minetest-mod-snow
+Website: http://splizard.com/minetest/mods/snow/
+
+INSTALL:
+----------
+Place this folder in your minetest mods folder.
+(http://dev.minetest.net/Installing_Mods)
+
+	* After downloading, unzip the file.
+	* Rename the directory "minetest-mod-snow-master" to "snow"
+	* Copy the "snow" directory into either
+	../minetest/worlds/yourworld'sname/worldmods/
+	or
+	../minetest/mods/
+	* If you put "snow" in the ../minetest/mods/ directory, either
+	enable the mod from within Minetest's "Configure" button
+	(main menu, bottom right) or by adding this line to the
+	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.
+Moss can be found in the snow, when moss is placed near cobble it spreads.
+Christmas trees can be found when digging pine needles.
+Sleds allow for faster travel on snow.
+
+CRAFTING:
+-----------
+Snow Brick:
+
+Snow Block    Snow Block
+Snow Block    Snow Block
+
+Sled:
+				Stick
+Wood	Wood	Wood
+
+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:
+------------
+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.

mods/snow/src/abms.lua

@@ -0,0 +1,208 @@
+--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, 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"
+		and nodedef
+		and not (
+			(nodedef.sunlight_propagates or nodedef.paramtype == "light")
+			and nodedef.liquidtype == "none"
+		) then
+			minetest.set_node(pos, {name = "default:dirt"})
+		end
+	end
+})
+
+
+
+--Melting
+--Any node part of the group melting will melt when near warm nodes such as lava, fire, torches, etc.
+--The amount of water that replaces the node is defined by the number on the group:
+--1: one water_source
+--2: four water_flowings
+--3: one water_flowing
+
+minetest.register_abm({
+	nodenames = {"group:melts"},
+	neighbors = {"group:igniter", "default:torch", "default:furnace_active", "group:hot"},
+	interval = 10,
+	chance = 2,
+	action = function(pos, node)
+		local intensity = minetest.get_item_group(node.name,"melts")
+		if intensity == 1 then
+			minetest.set_node(pos, {name="default:water_source"})
+		elseif intensity == 2 then
+	 		minetest.set_node(pos, {name="default:water_flowing", param2=7})
+		elseif intensity == 3 then
+	 		minetest.set_node(pos, {name="default:water_flowing", param2=3})
+		--[[	LazyJ, you need to add param2, which defines the amount of the flowing water ~ HybridDog 2015_03_06
+			This was causing "melts=2" nodes to just disappear so I changed it to replace the
+			node with a water_source for a couple seconds and then replace the water_source with
+			air. This way it made a watery mess that quickly evaporated. ~ LazyJ 2014_04_24
+			local check_place = function(pos,node)
+				if minetest.get_node(pos).name == "air" then
+					minetest.place_node(pos,node)
+				end
+			end
+			minetest.add_node(pos,{name="default:water_flowing"})
+			check_place({x=pos.x+1,y=pos.y,z=pos.z},{name="default:water_flowing"})
+			check_place({x=pos.x-1,y=pos.y,z=pos.z},{name="default:water_flowing"})
+			check_place({x=pos.x,y=pos.y+1,z=pos.z},{name="default:water_flowing"})
+			check_place({x=pos.x,y=pos.y-1,z=pos.z},{name="default:water_flowing"})
+		elseif intensity == 3 then
+		--]
+			minetest.add_node(pos,{name="default:water_source"})
+				minetest.after(2, function()  -- 2 seconds gives just enough time for
+											-- the water to flow and spread before the
+											-- water_source is changed to air. ~ LazyJ
+					if minetest.get_node(pos).name == "default:water_source" then
+	 					minetest.add_node(pos,{name="air"})
+	 				end
+	 			end)
+		--]]
+	 	else
+			return
+		end
+		nodeupdate(pos)
+	end,
+})
+
+
+
+
+--Freezing
+--Water freezes when in contact with snow.
+minetest.register_abm({
+	nodenames = {"default:water_source"},
+	 -- Added "group:icemaker" and snowbrick. ~ LazyJ
+	neighbors = {"default:snow", "default:snowblock", "snow:snow_brick", "group:icemaker"},
+	interval = 20,
+	chance = 4,
+	action = function(pos)
+		minetest.add_node(pos,{name="default:ice"})
+	end,
+})
+
+--Freeze Ice according to it's param2 value.
+minetest.register_abm({
+	nodenames = {"default:ice"},
+	neighbors = {"default:water_source"},
+	interval = 20,
+	chance = 4,
+	action = function(pos, node)
+		if node.param2 > 0 then
+			for l = 0,1 do
+				for i = -1,1,2 do
+					for _,p in pairs({
+						{x=pos.x+i, z=pos.z-l*i},
+						{x=pos.x+l*i, z=pos.z+i}
+					}) do
+						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)})
+							end
+						end
+					end
+				end
+			end
+			if math.random(8) == 8 then
+				minetest.add_node(pos, {name="default:water_source"})
+			else
+				minetest.add_node(pos, {name="default:ice", param2 = 0})
+			end
+		end
+	end,
+})
+
+
+
+--Spread moss to cobble.
+minetest.register_abm({
+	nodenames = {"default:cobble"},
+	neighbors = {"snow:moss"},
+	interval = 20,
+	chance = 6,
+	action = function(pos, node)
+		node.name = "default:mossycobble"
+		minetest.add_node(pos, node)
+	end,
+})
+
+
+
+
+--Grow Pine Saplings
+minetest.register_abm({
+	nodenames = {"snow:sapling_pine"},
+	interval = 10,
+	chance = 50,
+	action = function(pos, node)
+
+-- Check if there is enough vertical-space for the sapling to grow without
+-- hitting anything else.  ~ LazyJ, 2014_04_10
+
+		-- 'If' there is air in each of the 8 nodes dirctly above the sapling,... ~LazyJ
+		for i = 1,8 do
+			if minetest.get_node({x=pos.x, y=pos.y+i, z=pos.z}).name ~= "air" then
+				return
+			end
+		end
+		-- 'then' let the sapling grow into a tree. ~ LazyJ
+
+		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
+			   minetest.set_node(pos, {name="default:pinetree"})
+			   -- This is more for testing but it may be useful info to some admins when
+			   -- grepping the server logs too. ~ LazyJ
+			   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, node)
+
+		-- 'If' there is air in each of the 8 nodes dirctly above the sapling,... ~LazyJ
+		for i = 1,8 do
+			if minetest.get_node({x=pos.x, y=pos.y+i, z=pos.z}).name ~= "air" then
+				return
+			end
+		end
+		-- 'then' let the sapling grow into a tree. ~ LazyJ
+
+		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
+})

mods/snow/src/aliases.lua

@@ -0,0 +1,104 @@
+-- Some aliases for compatibility switches and some to make "/give" commands
+-- a little easier
+
+minetest.register_alias("snow:snow", "default:snow")
+minetest.register_alias("default_snow", "default:snow")
+minetest.register_alias("snow:snowball", "default:snow")
+minetest.register_alias("snowball", "default:snow")
+minetest.register_alias("snowballs", "default:snow")
+minetest.register_alias("snow_ball", "default:snow")
+minetest.register_alias("snow:ice", "default:ice")
+minetest.register_alias("ice", "default:ice")
+minetest.register_alias("default_ice", "default:ice")
+minetest.register_alias("snow:dirt_with_snow", "default:dirt_with_snow")
+minetest.register_alias("dirtwithsnow", "default:dirt_with_snow")
+minetest.register_alias("snowdirt", "default:dirt_with_snow")
+minetest.register_alias("snowydirt", "default:dirt_with_snow")
+minetest.register_alias("snow:snow_block", "default:snowblock")
+minetest.register_alias("default:snow_block", "default:snowblock")
+minetest.register_alias("snowblocks", "default:snowblock")
+minetest.register_alias("snowbrick", "snow:snow_brick")
+minetest.register_alias("bricksnow", "snow:snow_brick")
+minetest.register_alias("snowbricks", "snow:snow_brick")
+minetest.register_alias("snowybricks", "snow:snow_brick")
+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")
+
+
+-- To clean up my first stairsplus attempt.
+-- Stair
+minetest.register_alias(":default:stair_snowblock", "moreblocks:stair_snowblock")
+minetest.register_alias(":default:stair_snowblock_half", "moreblocks:stair_snowblock_half")
+minetest.register_alias(":default:stair_snowblock_right_half", "moreblocks:stair_snowblock_right_half")
+minetest.register_alias(":default:stair_snowblock_inner", "moreblocks:stair_snowblock_inner")
+minetest.register_alias(":default:stair_snowblock_outer", "moreblocks:stair_snowblock_outer")
+minetest.register_alias(":default:stair_snowblock_alt", "moreblocks:stair_snowblock_alt")
+minetest.register_alias(":default:stair_snowblock_alt_1", "moreblocks:stair_snowblock_alt_1")
+minetest.register_alias(":default:stair_snowblock_alt_2", "moreblocks:stair_snowblock_2")
+minetest.register_alias(":default:stair_snowblock_alt_4", "moreblocks:stair_snowblock_alt_4")
+
+minetest.register_alias(":default:stair_ice", "moreblocks:stair_ice")
+minetest.register_alias(":default:stair_ice_half", "moreblocks:stair_ice_half")
+minetest.register_alias(":default:stair_ice_right_half", "moreblocks:stair_ice_right_half")
+minetest.register_alias(":default:stair_ice_inner", "moreblocks:stair_ice_inner")
+minetest.register_alias(":default:stair_ice_outer", "moreblocks:stair_ice_outer")
+minetest.register_alias(":default:stair_ice_alt", "moreblocks:stair_ice_alt")
+minetest.register_alias(":default:stair_ice_alt_1", "moreblocks:stair_ice_alt_1")
+minetest.register_alias(":default:stair_ice_alt_2", "moreblocks:stair_ice_2")
+minetest.register_alias(":default:stair_ice_alt_4", "moreblocks:stair_ice_alt_4")
+
+
+-- Slab
+minetest.register_alias(":default:slab_snowblock", "moreblocks:slab_snowblock")
+minetest.register_alias(":default:slab_snowblock_quarter", "moreblocks:slab_snowblock_quarter")
+minetest.register_alias(":default:slab_snowblock_three_quarter", "moreblocks:slab_snowblock_three_quarter")
+minetest.register_alias(":default:slab_snowblock_1", "moreblocks:slab_snowblock_1")
+minetest.register_alias(":default:slab_snowblock_2", "moreblocks:slab_snowblock_2")
+minetest.register_alias(":default:slab_snowblock_14", "moreblocks:slab_snowblock_14")
+minetest.register_alias(":default:slab_snowblock_15", "moreblocks:slab_snowblock_15")
+
+minetest.register_alias(":default:slab_ice", "moreblocks:slab_ice")
+minetest.register_alias(":default:slab_ice_quarter", "moreblocks:slab_ice_quarter")
+minetest.register_alias(":default:slab_ice_three_quarter", "moreblocks:slab_ice_three_quarter")
+minetest.register_alias(":default:slab_ice_1", "moreblocks:slab_ice_1")
+minetest.register_alias(":default:slab_ice_2", "moreblocks:slab_ice_2")
+minetest.register_alias(":default:slab_ice_14", "moreblocks:slab_ice_14")
+minetest.register_alias(":default:slab_ice_15", "moreblocks:slab_ice_15")
+
+
+-- Panel
+minetest.register_alias(":default:panel_snowblock", "moreblocks:panel_snowblock")
+minetest.register_alias(":default:panel_snowblock_1", "moreblocks:panel_snowblock_1")
+minetest.register_alias(":default:panel_snowblock_2", "moreblocks:panel_snowblock_2")
+minetest.register_alias(":default:panel_snowblock_4", "moreblocks:panel_snowblock_4")
+minetest.register_alias(":default:panel_snowblock_12", "moreblocks:panel_snowblock_12")
+minetest.register_alias(":default:panel_snowblock_14", "moreblocks:panel_snowblock_14")
+minetest.register_alias(":default:panel_snowblock_15", "moreblocks:panel_snowblock_15")
+
+minetest.register_alias(":default:panel_ice", "moreblocks:panel_ice")
+minetest.register_alias(":default:panel_ice_1", "moreblocks:panel_ice_1")
+minetest.register_alias(":default:panel_ice_2", "moreblocks:panel_ice_2")
+minetest.register_alias(":default:panel_ice_4", "moreblocks:panel_ice_4")
+minetest.register_alias(":default:panel_ice_12", "moreblocks:panel_ice_12")
+minetest.register_alias(":default:panel_ice_14", "moreblocks:panel_ice_14")
+minetest.register_alias(":default:panel_ice_15", "moreblocks:panel_ice_15")
+
+
+-- Micro
+minetest.register_alias(":default:micro_snowblock", "moreblocks:micro_snowblock")
+minetest.register_alias(":default:micro_snowblock_1", "moreblocks:micro_snowblock_1")
+minetest.register_alias(":default:micro_snowblock_2", "moreblocks:micro_snowblock_2")
+minetest.register_alias(":default:micro_snowblock_4", "moreblocks:micro_snowblock_4")
+minetest.register_alias(":default:micro_snowblock_12", "moreblocks:micro_snowblock_12")
+minetest.register_alias(":default:micro_snowblock_14", "moreblocks:micro_snowblock_14")
+minetest.register_alias(":default:micro_snowblock_15", "moreblocks:micro_snowblock_15")
+
+minetest.register_alias(":default:micro_ice", "moreblocks:micro_ice")
+minetest.register_alias(":default:micro_ice_1", "moreblocks:micro_ice_1")
+minetest.register_alias(":default:micro_ice_2", "moreblocks:micro_ice_2")
+minetest.register_alias(":default:micro_ice_4", "moreblocks:micro_ice_4")
+minetest.register_alias(":default:micro_ice_12", "moreblocks:micro_ice_12")
+minetest.register_alias(":default:micro_ice_14", "moreblocks:micro_ice_14")
+minetest.register_alias(":default:micro_ice_15", "moreblocks:micro_ice_15")

mods/snow/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

mods/snow/src/crafting.lua

@@ -0,0 +1,216 @@
+--[[
+
+Crafting Sections (in order, top to bottom):
+	1. Cooking
+	2. Crafting and Recycling
+
+The crafting recipe for the sled is in the sled.lua file.
+
+~ LazyJ
+
+]]
+
+
+-- 1. Cooking
+
+--[[
+"Cooks_into_ice" is a custom group I assigned to full-sized, snow-stuff nodes
+(snow bricks, snow cobble, snow blocks, etc.) so I wouldn't have to write an individual cooking
+recipe for each one.
+
+~ LazyJ
+]]
+
+minetest.register_craft({
+	type = "cooking",
+	cooktime = 12,
+	output = "default:ice",
+	recipe = "group:cooks_into_ice",
+})
+
+
+
+
+
+
+-- 2. Crafting and Recycling
+
+-- Let's make moss craftable so players can more easily create mossycobble and
+-- gives another useful purpose to pine needles. ~ LazyJ
+
+minetest.register_craft({
+	output = "snow:moss",
+	recipe = {
+		{"snow:needles", "snow:needles"},
+		{"snow:needles", "snow:needles"},
+	},
+})
+
+
+--[[
+Most snow biomes are too small to provide enough snow as a building material and
+still have enough landscape snow to create the wintry surroundings of a
+snow village or castle. So I added this snowblock crafting recipe as a way for
+players to increase their snow supply in small increments. I considered making
+the output 9 but that would make it all too quick and easy (especially for griefers) to create lots
+of snowblocks (and then use them to water-grief by melting the snow blocks).
+
+~ LazyJ
+
+--]]
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "default:snowblock 2",
+	recipe = {
+		"snow:snow_cobble",
+		"snow:snow_cobble"
+	}
+})
+
+
+
+--[[minetest.register_craft({
+	type = "shapeless",
+	output = "default:snowblock 3",
+	recipe = {
+		"default:snowblock",
+		"default:snowblock"
+	}
+})]]
+
+
+
+minetest.register_craft({
+	output = "snow:snow_brick",
+	recipe = {
+		{"default:snowblock", "default:snowblock"},
+		{"default:snowblock", "default:snowblock"}
+	}
+})
+
+-- Why not recycle snow_bricks back into snowblocks? ~ LazyJ
+minetest.register_craft({
+	output = "default:snowblock 4",
+	recipe = {
+		{"snow:snow_brick"}
+	}
+})
+
+
+minetest.register_craft({
+	output = "snow:ice_brick",
+	recipe = {
+		{"default:ice", "default:ice"},
+		{"default:ice", "default:ice"}
+	}
+})
+
+minetest.register_craft({
+	output = "snow:snow_cobble 6",
+	recipe = {
+		{"snow:ice_brick"}
+	}
+})
+
+
+--Craft icy snow.
+minetest.register_craft({
+	type = "shapeless",
+	output = "snow:snow_cobble 6",
+	recipe = {
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:ice",
+		"default:ice",
+		"default:ice"
+	}
+})
+
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "snow:snow_cobble 4",
+	recipe = {
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:snow",
+		"default:ice",
+		"default:ice"
+	}
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "snow:snow_cobble 2",
+	recipe = {
+		"default:snow",
+		"default:snow",
+		"default:ice"
+	}
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "snow:snow_cobble",
+	recipe = {
+		"default:snow",
+		"default:ice"
+	}
+})
+
+
+
+-- Recycle basic, half-block, slabs back into full blocks
+
+-- A little "list" magic here. Instead of writing four crafts I only have to write two. ~ LazyJ
+local recycle_default_slabs = {
+	"ice",
+	"snowblock",
+}
+
+for _, name in pairs(recycle_default_slabs) do
+	local subname_default = name
+
+	-- This craft is for default snowblocks and default ice.
+	-- 1 crafting recipe handles 2, default blocks. ~ LazyJ
+	minetest.register_craft({
+		type = "shapeless",
+		output = "default:"..subname_default,
+		recipe = {
+			"snow:slab_"..subname_default,
+			"snow:slab_"..subname_default,
+		}
+	})
+end
+
+
+
+-- Similar list magic here too. I couldn't successfully combine these in the first list
+-- because we are dealing with slabs/blocks from two different mods, the "Snow" mod and
+-- minetest_game's "Default" mod. ~ LazyJ
+
+local recycle_snowmod_slabs = {
+	"snow_brick",
+	"snow_cobble",
+}
+
+for _, name in pairs(recycle_snowmod_slabs) do
+	local subname_snowmod = name
+
+	-- This craft is for the Snow mod's full-sized blocks.
+	-- 1 crafting recipe handles 2, or more, Snow mod blocks. ~ LazyJ
+	minetest.register_craft({
+		type = "shapeless",
+		output = "snow:"..subname_snowmod,
+		recipe = {
+			"snow:slab_"..subname_snowmod,
+			"snow:slab_"..subname_snowmod,
+		}
+	})
+end

mods/snow/src/falling_snow.lua

@@ -0,0 +1,234 @@
+--[[
+--=================
+--======================================
+LazyJ's Fork of Splizard's "Snow" Mod
+by LazyJ
+version: Umpteen and 7/5ths something or another.
+2014_04_12
+--======================================
+--=================
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+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.
+
+--]]
+
+
+
+--=============================================================
+-- CODE STUFF
+--=============================================================
+
+
+local weather_legacy
+
+local read_weather_legacy = function ()
+	local file = io.open(minetest.get_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(minetest.get_worldpath().."/weather_v6", "w+")
+	file:write(weather_legacy)
+	file:close()
+end
+
+	weather_legacy = read_weather_legacy() or ""
+
+	minetest.register_globalstep(function(dtime)
+		if weather_legacy == "snow" then
+			if math.random(1, 10000) == 1 then
+				weather_legacy = "none"
+				save_weather_legacy()
+			end
+		else
+			if math.random(1, 50000) == 2 then
+				weather_legacy = "snow"
+				save_weather_legacy()
+			end
+		end
+	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
+
+--Get snow at position.
+local function get_snow(pos)
+	--Legacy support.
+	if weather_legacy == "snow" then
+		local perlin1 = minetest.get_perlin(112,3, 0.5, 150)
+		if perlin1:get2d({x=pos.x, y=pos.z}) <= 0.53 then
+			return false
+		end
+
+		-- disable falling snow in desert
+		local desert_perlin = minetest.get_perlin(SEEDDIFF3, OCTAVES3, PERSISTENCE3, SCALE3)
+		local noise3 = desert_perlin:get2d({x=pos.x+150,y=pos.z+50}) -- Offsets must match minetest mapgen desert perlin.
+		if noise3 > 0.35 then -- Smooth transition 0.35 to 0.45.
+			return false
+		end
+		return true
+	end
+	return false
+end
+
+local addvectors = vector and vector.add
+
+--Returns a random position between minp and maxp.
+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
+		if n ~= "air" and n ~= "ignore" then
+			return
+		end
+	end
+	for y=pos.y+10,pos.y-15,-1 do
+		local n = minetest.get_node({x=pos.x,y=y,z=pos.z}).name
+		if n ~= "air" and n ~= "ignore" then
+			ground_y = y
+			break
+		end
+	end
+	if not ground_y then
+		return
+	end
+
+	pos = {x=pos.x, y=ground_y, z=pos.z}
+
+  	if get_snow(pos) then
+  		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
+end
+
+-- Snow
+local function calc_snowfall()
+	for _, player in pairs(minetest.get_connected_players()) do
+		local ppos = player:getpos()
+
+		-- 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 snow.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()
+				}))
+
+				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()
+				}))
+
+				animate = false
+			else
+				animate = true
+			end
+
+			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
+
+minetest.register_globalstep(function(dtime)
+	if snow.enable_snowfall then
+		calc_snowfall()
+	end
+end)

mods/snow/src/mapgen.lua

@@ -0,0 +1,160 @@
+--[[
+If you want to run PlantLife and mods that depend on it, i.e. MoreTrees, Disable the mapgen by
+commenting-out the lines starting with "local mgname = " through "end" (I left a note were to start
+and stop) Disabling "Snow's" mapgen allows MoreTrees and PlantLife to do their thing until the
+issue is figured out. However, the pine and xmas tree code is still needed for when those
+saplings grow into trees. --]]
+--The *starting* comment looks like this:  --[[
+--The *closing* comment looks like this:  --]]
+
+-- ~ LazyJ, 2014_05_13
+
+
+--[[ Part 1: To disable the mapgen, add the *starting* comment under this line.
+
+
+--Identify the mapgen.
+minetest.register_on_mapgen_init(function(MapgenParams)
+	local mgname = MapgenParams.mgname
+	if not mgname then
+		io.write("[MOD] Snow Biomes: WARNING! mapgen could not be identifyed!\n")
+	end
+	if mgname == "v7" then
+		--Load mapgen_v7 compatibility.
+		dofile(minetest.get_modpath("snow").."/src/mapgen_v7.lua")
+	else
+		--Load mapgen_v6 compatibility.
+		dofile(minetest.get_modpath("snow").."/src/mapgen_v6.lua")
+	end
+end)
+
+-- To complete the commenting-out add the *closing* comment under this line.
+
+
+
+
+local pine_tree = {
+	axiom="TABff",
+	rules_a="[&T+f+ff+ff+ff+f]GA",
+	rules_b="[&T+f+Gf+Gf+Gf]GB",
+	trunk="default:pinetree",
+	leaves="snow:needles",
+	angle=90,
+	iterations=1,
+	random_level=0,
+	trunk_type="single",
+	thin_branches=true,
+}
+
+
+
+local xmas_tree = {
+	axiom="TABff",
+	rules_a="[&T+f+ff+ff+ff+f]GA",
+	rules_b="[&T+f+Gf+Gf+Gf]GB",
+	trunk="default:pinetree",
+	leaves="snow:needles_decorated",
+	angle=90,
+	iterations=1,
+	random_level=0,
+	trunk_type="single",
+	thin_branches=true,
+}
+
+
+
+--Makes pine tree
+function snow.make_pine(pos,snow,xmas)
+	local minetest = minetest
+	local perlin1 = minetest.get_perlin(112,3, 0.5, 150)
+	local try_node = function(pos, node)
+		local n = minetest.get_node(pos).name
+		if n == "air"
+		or n == "ignore" then
+			minetest.add_node(pos, node)
+		end
+	end
+	if xmas then
+		minetest.remove_node(pos)
+		minetest.spawn_tree(pos, xmas_tree)
+	else
+		minetest.spawn_tree(pos, pine_tree)
+	end
+	if snow then
+		local x,z = pos.x,pos.z
+		try_node({x=x+1,y=pos.y+3,z=z+1},{name="default:snow"})
+		try_node({x=x-1,y=pos.y+3,z=z-1},{name="default:snow"})
+		try_node({x=x-1,y=pos.y+3,z=z+1},{name="default:snow"})
+		try_node({x=x+1,y=pos.y+3,z=z-1},{name="default:snow"})
+
+		try_node({x=x+1,y=pos.y+5,z=z},{name="default:snow"})
+		try_node({x=x-1,y=pos.y+5,z=z},{name="default:snow"})
+		try_node({x=x,y=pos.y+5,z=z+1},{name="default:snow"})
+		try_node({x=x,y=pos.y+5,z=z-1},{name="default:snow"})
+	end
+	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 perlin1:get2d({x=pos.x,y=pos.z}) > 0.53 then
+		try_node({x=pos.x,y=pos.y+7,z=pos.z},{name="default:snow"})
+	end
+end
+
+
+
+--Makes pine tree
+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, 150)
+	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:get2d({x=x,y=z}) > 0.53 then
+					local abovenode = a:index(x,pos.y+i+1,z)
+					data[abovenode] = c_snow
+				end
+			end
+		end
+	end
+	for i=3, 4 do
+		local x = pos.x
+		local y = pos.y+i
+		local z = pos.z
+		data[a:index(x+1,y,z)] = c_pine_needles
+		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:get2d({x=x+1,y=z}) > 0.53 then
+			data[a:index(x+1,y+1,z)] = c_snow
+		end
+		if perlin1:get2d({x=x+1,y=z}) > 0.53 then
+			data[a:index(x-1,y+1,z)] = c_snow
+		end
+		if perlin1:get2d({x=x,y=z+1}) > 0.53 then
+			data[a:index(x,y+1,z+1)] = c_snow
+		end
+		if perlin1:get2d({x=x,y=z-1}) > 0.53 then
+			data[a:index(x,y+1,z-1)] = c_snow
+		end
+	end
+	for i=0, 4 do
+		data[a:index(pos.x,pos.y+i,pos.z)] = c_pinetree
+	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:get2d({x=pos.x,y=pos.z}) > 0.53 then
+		data[a:index(pos.x,pos.y+7,pos.z)] = c_snow
+	end
+end
+]]

mods/snow/src/mapgen_v6.lua

@@ -0,0 +1,486 @@
+-- https://github.com/paramat/meru/blob/master/init.lua#L52
+--[[ Parameters must match mgv6 biome noise
+local np_default = {
+	offset = 0,
+	scale = 1,
+	spread = {x=250, y=250, z=250},
+	seed = 9130,
+	octaves = 3,
+	persist = 0.5
+}
+
+-- 2D noise for coldness
+
+local np_cold = {
+	offset = 0,
+	scale = -1,
+	spread = {x=256, y=256, z=256},
+	seed = 112,
+	octaves = 3,
+	persist = 0.5
+}
+
+-- 2D noise for icetype
+
+local np_ice = {
+	offset = 0,
+	scale = 1,
+	spread = {x=80, y=80, z=80},
+	seed = 322345,
+	octaves = 3,
+	persist = 0.5
+}
+
+-- Debugging function
+
+local biome_strings = {
+	{"snowy", "plain", "alpine", "normal", "normal"},
+	{"cool", "icebergs", "icesheet", "icecave", "icehole"}
+}
+local function biome_to_string(num,num2)
+	local biome = biome_strings[1][num] or "unknown "..num
+	return biome
+end
+
+
+local function do_ws_func(a, x)
+	local n = x/(16000)
+	local y = 0
+	for k=1,1000 do
+		y = y + 1000*math.sin(math.pi * k^a * n)/(math.pi * k^a)
+	end
+	return y
+end
+
+
+local plantlike_ids = {}
+local function is_plantlike(id)
+	if plantlike_ids[id] ~= nil then
+		return plantlike_ids[id]
+	end
+	local node = minetest.registered_nodes[minetest.get_name_from_content_id(id)]
+	if not node then
+		plantlike_ids[id] = false
+		return false
+	end
+	local drawtype = node.drawtype
+	if not drawtype
+	or drawtype ~= "plantlike" then
+		plantlike_ids[id] = false
+		return false
+	end
+	plantlike_ids[id] = true
+	return true
+end
+
+local snowable_ids = {}
+local function is_snowable(id)
+	if snowable_ids[id] ~= nil then
+		return snowable_ids[id]
+	end
+	local node = minetest.registered_nodes[minetest.get_name_from_content_id(id)]
+	if not node then
+		snowable_ids[id] = false
+		return false
+	end
+	local drawtype = node.drawtype
+	if drawtype
+	and drawtype ~= "normal"
+	and drawtype ~= "allfaces_optional"
+	and drawtype ~= "glasslike" then
+		snowable_ids[id] = false
+		return false
+	end
+	snowable_ids[id] = true
+	return true
+end
+
+local c, replacements
+local function define_contents()
+	c = {
+		dirt_with_grass = minetest.get_content_id("default:dirt_with_grass"),
+		dirt = minetest.get_content_id("default:dirt"),
+		tree = minetest.get_content_id("default:tree"),
+		apple = minetest.get_content_id("default:apple"),
+		snow = minetest.get_content_id("default:snow"),
+		snow_block = minetest.get_content_id("default:snowblock"),
+		dirt_with_snow = minetest.get_content_id("default:dirt_with_snow"),
+		air = minetest.get_content_id("air"),
+		ignore = minetest.get_content_id("ignore"),
+		stone = minetest.get_content_id("default:stone"),
+		dry_shrub = minetest.get_content_id("default:dry_shrub"),
+		snow_shrub = minetest.get_content_id("snow:shrub_covered"),
+		leaves = minetest.get_content_id("default:leaves"),
+		jungleleaves = minetest.get_content_id("default:jungleleaves"),
+		junglegrass = minetest.get_content_id("default:junglegrass"),
+		ice = minetest.get_content_id("default:ice"),
+		water = minetest.get_content_id("default:water_source"),
+		papyrus = minetest.get_content_id("default:papyrus"),
+		sand = minetest.get_content_id("default:sand"),
+		desert_sand = minetest.get_content_id("default:desert_sand"),
+	}
+	replacements = snow.known_plants or {}
+end
+
+minetest.register_on_generated(function(minp, maxp, seed)
+	local t1 = os.clock()
+
+	local x0 = minp.x
+	local z0 = minp.z
+	local x1 = maxp.x
+	local z1 = maxp.z
+
+	local smooth = snow.smooth_biomes
+
+	if not c then
+		define_contents()
+	end
+
+	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
+	local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
+	local data = vm:get_data()
+	local param2s = vm:get_param2_data()
+
+	local snow_tab,num = {},1
+	local pines_tab,pnum = {},1
+
+	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)
+	-- Land biomes
+	local biome = pr:next(1, 5)
+	local snowy = biome == 1 -- spawns snow
+	local alpine = biome == 3 -- rocky terrain
+	-- Misc biome settings
+	local icy = pr:next(1, 2) == 2   -- if enabled spawns ice in sand instead of snow blocks
+	local shrubs = pr:next(1,2) == 1 -- spawns dry shrubs in snow
+	local pines = pr:next(1,2) == 1 -- spawns pines
+	-- Reseed random
+	pr = PseudoRandom(seed+68)
+
+	-- Loop through columns in chunk
+	local write_to_map = false
+	local ni = 1
+	for z = z0, z1 do
+	for x = x0, x1 do
+	        local in_biome = false
+	        local test
+	        if nvals_default[ni] < 0.35 then
+			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 smooth
+			and not snowy then
+				if (test > 0.73 or (test > 0.43 and pr:next(0,29) > (0.73 - test) * 100 )) then
+					in_biome = true
+				end
+			elseif test > 0.53 then
+				in_biome = true
+			end
+		end
+
+		if not in_biome then
+			if alpine
+			and test
+			and test > 0.43 then
+				-- remove trees near alpine
+				local ground_y = nil
+				for y = maxp.y, minp.y, -1 do
+					local nodid = data[area:index(x, y, z)]
+					if nodid ~= c.air
+					and nodid ~= c.ignore then
+						ground_y = y
+						break
+					end
+				end
+				if ground_y == maxp.y then -- avoid awful snow layers at chunk boundaries underground
+					ground_y = nil
+				end
+
+				if ground_y then
+					local vi = area:index(x, ground_y, z)
+					if data[vi] == c.leaves
+					or data[vi] == c.jungleleaves then
+						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
+								else
+									break
+								end
+							end
+						end
+					end
+				end
+			end
+		else
+			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
+			local icebergs = icetype > -0.2 and icetype <= 0
+			local icehole = icetype > -0.4 and icetype <= -0.2 -- icesheet with holes
+			local icesheet = icetype > -0.6 and icetype <= -0.4
+			local icecave = icetype <= -0.6
+
+			local ground_y
+			for y = maxp.y, minp.y, -1 do
+				local nodid = data[area:index(x, y, z)]
+				if nodid ~= c.air and nodid ~= c.ignore then
+					ground_y = y
+					break
+				end
+			end
+			if ground_y == maxp.y then -- avoid awful snow layers at chunk boundaries underground
+				ground_y = nil
+			end
+
+			if ground_y then
+				local node = area:index(x, ground_y, z)
+				local c_ground = data[node]
+
+				if c_ground == c.dirt_with_grass then
+					if alpine
+					and test > 0.53 then
+						snow_tab[num] = {ground_y, z, x, test}
+						num = num+1
+						-- generate stone ground
+						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
+						end
+					elseif pines
+					and pr:next(1,36) == 1 then
+						pines_tab[pnum] = {x=x, y=ground_y+1, z=z}
+						pnum = pnum+1
+					elseif shrubs
+					and pr:next(1,928) == 1 then
+						data[node] = c.dirt_with_snow
+						data[area:index(x, ground_y+1, z)] = c.dry_shrub
+					else
+						if snowy
+						or test > 0.8 then
+							-- more, deeper snow
+							data[node] = c.snow_block
+						else
+							data[node] = c.dirt_with_snow
+						end
+						snow_tab[num] = {ground_y, z, x, test}
+						num = num+1
+					end
+				elseif c_ground == c.water then
+					if not icesheet
+					and not icecave
+					and not icehole then
+						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 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
+								and i ~= c.ignore then
+									ice = true
+									break
+								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
+					else
+						if icesheet
+						or icecave
+						or (icehole and pr:next(1,10) > 1) then
+							data[node] = c.ice
+						end
+						if icecave then
+							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
+							end
+						end
+						if icesheet then
+							-- put snow onto icesheets
+							snow_tab[num] = {ground_y, z, x, test}
+							num = num+1
+						end
+					end
+				elseif c_ground == c.sand then
+					if icy then
+						data[node] = c.ice
+					end
+					snow_tab[num] = {ground_y, z, x, test}
+					num = num+1
+				elseif c_ground == c.papyrus then
+					snow_tab[num] = {ground_y, z, x, test}
+					num = num+1
+					-- replace papyrus plants with snowblocks
+					local y = ground_y
+					for _ = 1,7 do
+						local vi = area:index(x, y, z)
+						if data[vi] == c.papyrus then
+							data[vi] = c.snow_block
+							y = y-1
+						else
+							break
+						end
+					end
+				elseif alpine then
+					-- make stone pillars out of trees and other stuff
+					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[stone] = c.stone
+					end
+					-- put snow onto it
+					snow_tab[num] = {ground_y, z, x, test}
+					num = num+1
+				elseif c_ground ~= c.desert_sand then
+					if is_snowable(c_ground) then
+						-- put snow onto it
+						snow_tab[num] = {ground_y, z, x, test}
+						num = num+1
+					end
+					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
+							data[vi] = replacements[nd]
+							if plantlike then
+								param2s[vi] = pr:next(0,179)
+							end
+						elseif nd == c.dirt_with_grass then
+							data[vi] = c.dirt_with_snow
+							break
+						elseif plantlike then
+							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
+								param2s[vi] = pr:next(0,179)
+								data[under] = c.dirt_with_snow
+								break
+							end
+						elseif nd == c.stone then
+							break
+						end
+					end
+				end
+			end
+		end
+		ni = ni + 1
+	end
+	end
+
+	if num ~= 1 then
+		for _,i in pairs(snow_tab) do
+			-- set snow
+			data[area:index(i[3], i[1]+1, i[2])] = c.snow
+		end
+		local wsz, wsx
+		for _,i in pairs(snow_tab) do
+			local y,z,x,test = unpack(i)
+			test = (test-0.53)/0.47 -- /(1-0.53)
+			if test > 0 then
+				local maxh = math.floor(test*10)%10+1
+				if maxh ~= 1 then
+					local h = math.floor( do_ws_func(2, x) + do_ws_func(5, z)*5)%10+1
+					if h ~= 1 then
+						-- search for nearby snow
+						y = y+1
+						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
+									h = h/2
+								end
+							end
+						end
+						h = math.floor(h+0.5)
+						if h > 1 then
+							-- make snowdrifts walkable
+							if h == 10 then
+								h = 5
+							end
+							h = math.min(maxh, h)
+							local vi = area:index(x, y, z)
+							if h == 9 then
+								-- replace the snow with a snowblock because its a full node
+								data[vi] = c.snow_block
+							else
+								-- set a specific snow height
+								param2s[vi] = h*7
+							end
+						end
+					end
+				end
+			end
+		end
+	end
+
+	-- spawn pines
+	if pines
+	and pnum ~= 1 then
+		local spawn_pine = snow.voxelmanip_pine
+		for _,pos in pairs(pines_tab) do
+			spawn_pine(pos, area, data)
+		end
+	end
+
+	vm:set_data(data)
+	vm:set_param2_data(param2s)
+	vm:set_lighting({day=0, night=0})
+	vm:calc_lighting()
+	vm:write_to_map()
+
+	if write_to_map
+	and snow.debug then -- print if any column of mapchunk was snow biome
+		local biome_string = biome_to_string(biome)
+		local chugent = math.ceil((os.clock() - t1) * 1000)
+		print("[snow] "..biome_string.." x "..minp.x.." z "..minp.z.." time "..chugent.." ms")
+	end
+end)
+

mods/snow/src/mapgen_v7.lua

@@ -0,0 +1,138 @@
+minetest.register_biome({
+	name           = "snow_biome_default",
+
+	node_top       = "default:dirt_with_snow",
+	depth_top      = 1,
+	node_filler    = "default:dirt",
+	depth_filler   = 2,
+
+	height_min     = snow.min_height,
+	height_max     = snow.min_height+60,
+	heat_point     = 10.0,
+	humidity_point = 40.0,
+})
+
+minetest.register_biome({
+	name           = "snow_biome_forest",
+
+	node_top       = "default:dirt_with_snow",
+	depth_top      = 1,
+	node_filler    = "default:dirt",
+	depth_filler   = 2,
+
+	height_min     = snow.min_height,
+	height_max     = snow.min_height+60,
+	heat_point     = 10.0,
+	humidity_point = 55.0,
+})
+
+minetest.register_biome({
+	name           = "snow_biome_lush",
+
+	node_top       = "default:dirt_with_snow",
+	depth_top      = 1,
+	node_filler    = "default:dirt",
+	depth_filler   = 2,
+
+	height_min     = snow.min_height,
+	height_max     = snow.min_height+60,
+	heat_point     = 10.0,
+	humidity_point = 70.0,
+})
+
+minetest.register_biome({
+	name           = "snow_biome_alpine",
+
+	node_top       = "default:stone",
+	depth_top      = 1,
+	node_filler    = "default:stone",
+
+	height_min     = snow.min_height+60,
+	height_max     = 31000,
+	heat_point     = 10.0,
+	humidity_point = 40.0,
+})
+
+minetest.register_biome({
+	name           = "snow_biome_sand",
+
+	node_top       = "default:sand",
+	depth_top      = 3,
+	node_filler    = "default:stone",
+	depth_filler   = 0,
+
+	height_min     = -31000,
+	height_max     = 2,
+	heat_point     = 10.0,
+	humidity_point = 40.0,
+})
+
+
+--Pine tree.
+minetest.register_decoration({
+	deco_type = "schematic",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 0.005,
+	biomes = {"snow_biome_default"},
+	schematic = minetest.get_modpath("snow").."/schematics/pine.mts",
+	flags = "place_center_x, place_center_z",
+})
+
+minetest.register_decoration({
+	deco_type = "schematic",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 0.05,
+	biomes = {"snow_biome_forest"},
+	schematic = minetest.get_modpath("snow").."/schematics/pine.mts",
+	flags = "place_center_x, place_center_z",
+})
+
+minetest.register_decoration({
+	deco_type = "schematic",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 0.1,
+	biomes = {"snow_biome_lush"},
+	schematic = minetest.get_modpath("snow").."/schematics/pine.mts",
+	flags = "place_center_x, place_center_z",
+})
+
+--Dry shrubs.
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 0.005,
+	biomes = {"snow_biome_default"},
+	decoration = "default:dry_shrub",
+})
+
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 0.05,
+	biomes = {"snow_biome_forest", "snow_biome_lush"},
+	decoration = "default:dry_shrub",
+})
+
+--Snow.
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = "default:dirt_with_snow",
+	sidelen = 16,
+	fill_ratio = 10,
+	biomes = {"snow_biome_default", "snow_biome_forest", "snow_biome_lush"},
+	decoration = "default:snow",
+})
+
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = "default:stone",
+	sidelen = 16,
+	fill_ratio = 10,
+	biomes = {"snow_biome_alpine"},
+	decoration = "default:snow",
+})

mods/snow/src/nodes.lua

@@ -0,0 +1,360 @@
+-- NODES
+
+-- Pine Needles
+local nodedef = {
+	description = "Pine Needles",
+	drawtype = "allfaces_optional",
+	visual_scale = 1.3,
+	tiles = {"snow_needles.png"},
+	waving = 1,
+	paramtype = "light",
+	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'},
+			}
+		}
+	},
+	sounds = default.node_sound_leaves_defaults(),
+}
+
+--[[
+If christmas_content is enabled, then this next part will override the pine needles' drop code
+(in the code section above) and adds Xmas tree saplings to the items that are dropped.
+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'},
+		rarity = 120,
+	})
+end
+
+minetest.register_node("snow:needles", table.copy(nodedef))
+
+
+
+
+
+	--Christmas easter egg
+	minetest.register_on_mapgen_init( function()
+		if rawget(_G, "skins") then
+			skins.add("character_snow_man")
+		end
+	end
+	)
+
+
+-- Decorated Pine Leaves
+
+nodedef.description ="Decorated "..nodedef.description
+nodedef.light_source = 5
+nodedef.waving = nil
+if snow.disable_deco_needle_ani then
+	nodedef.tiles = {"snow_needles_decorated.png"}
+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}}
+	}
+end
+nodedef.drop.items[#nodedef.drop.items] = {items = {'snow:needles_decorated'}}
+
+minetest.register_node("snow:needles_decorated", nodedef)
+
+
+-- Saplings
+
+nodedef = {
+	description = "Pine Sapling",
+	drawtype = "plantlike",
+	visual_scale = 1.0,
+	tiles = {"snow_sapling_pine.png"},
+	inventory_image = "snow_sapling_pine.png",
+	wield_image = "snow_sapling_pine.png",
+	paramtype = "light",
+	walkable = false,
+	groups = {snappy=2,dig_immediate=3},
+	furnace_burntime = 10,
+	sounds = default.node_sound_defaults(),
+}
+
+-- Pine Sapling
+minetest.register_node("snow:sapling_pine", table.copy(nodedef))
+
+-- Xmas Tree Sapling
+nodedef.description = "Christmas Tree"
+nodedef.tiles = {"snow_xmas_tree.png"}
+nodedef.inventory_image = "snow_xmas_tree.png"
+nodedef.wield_image = "snow_xmas_tree.png"
+
+minetest.register_node("snow:xmas_tree", nodedef)
+
+
+nodedef = {
+	description = "Star",
+	drawtype = "plantlike",
+	tiles = {"snow_star.png"},
+	inventory_image = "snow_star.png",
+	wield_image = "snow_star.png",
+	paramtype = "light",
+	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}}),
+	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,
+}
+
+-- Star on Xmas Trees
+minetest.register_node("snow:star", table.copy(nodedef))
+
+-- Star (Lit Version) on Xmas Trees
+nodedef.description = nodedef.description.." Lighted"
+nodedef.light_source = 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)
+
+
+
+-- Plants
+
+-- Moss
+minetest.register_node("snow:moss", {
+	description = "Moss",
+	inventory_image = "snow_moss.png",
+	tiles = {"snow_moss.png"},
+	drawtype = "signlike",
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	walkable = false,
+	selection_box = {
+		type = "wallmounted",
+	},
+	is_ground_content = true,
+	groups = {crumbly=3, attached_node=1},
+	furnace_burntime = 3,
+})
+
+-- Shrub(s)
+nodedef = {
+	description = "Snow Shrub",
+	tiles = {"snow_shrub.png"},
+	inventory_image = "snow_shrub.png",
+	wield_image = "snow_shrub.png",
+	drawtype = "plantlike",
+	paramtype = "light",
+	waving = 1,
+	sunlight_propagates = true,
+	walkable = false,
+	is_ground_content = true,
+	buildable_to = true,
+	groups = {snappy=3,flammable=3,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, -5/16, 0.3},
+	},
+	furnace_burntime = 5,
+}
+minetest.register_node("snow:shrub", table.copy(nodedef))
+
+nodedef.tiles = {"snow_shrub.png^snow_shrub_covering.png"}
+nodedef.inventory_image = "snow_shrub.png^snow_shrub_covering.png"
+nodedef.wield_image = "snow_shrub.png^snow_shrub_covering.png"
+nodedef.drop = "snow:shrub"
+nodedef.furnace_burntime = 3
+minetest.register_node("snow:shrub_covered", nodedef)
+
+-- Flowers
+if rawget(_G, "flowers") then
+	-- broken flowers
+	snow.known_plants = {}
+	for _,name in pairs({"dandelion_yellow", "geranium", "rose", "tulip", "dandelion_white", "viola"}) do
+		local flowername = "flowers:"..name
+		local newname = "snow:flower_"..name
+		local flower = minetest.registered_nodes[flowername]
+		minetest.register_node(newname, {
+			drawtype = "plantlike",
+			tiles = { "snow_" .. name .. ".png" },
+			sunlight_propagates = true,
+			paramtype = "light",
+			walkable = false,
+			drop = "",
+			groups = {snappy=3, attached_node = 1},
+			sounds = default.node_sound_leaves_defaults(),
+			selection_box = flower.selection_box
+		})
+		snow.known_plants[minetest.get_content_id(flowername)] = minetest.get_content_id(newname)
+	end
+end
+
+-- Leaves
+local leaves = minetest.registered_nodes["default:leaves"]
+nodedef = {
+	description = "Snow Leaves",
+	tiles = {"snow_leaves.png"},
+	waving = 1,
+	visual_scale = leaves.visual_scale,
+	drawtype = leaves.drawtype,
+	paramtype = leaves.paramtype,
+	groups = leaves.groups,
+	drop = leaves.drop,
+	sounds = leaves.sounds,
+}
+nodedef.groups.flammable = 1
+
+minetest.register_node("snow:leaves", nodedef)
+snow.known_plants[minetest.get_content_id("default:leaves")] = minetest.get_content_id("snow:leaves")
+
+local apple = minetest.registered_nodes["default:apple"]
+nodedef = {
+	description = "Snow Apple",
+	drawtype = "plantlike",
+	tiles = {"snow_apple.png"},
+	paramtype = "light",
+	walkable = false,
+	sunlight_propagates = apple.sunlight_propagates,
+	selection_box = apple.selection_box,
+	groups = apple.groups,
+	sounds = apple.sounds,
+	drop = apple.drop,
+}
+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")
+
+-- TODO
+snow.known_plants[minetest.get_content_id("default:jungleleaves")] = minetest.get_content_id("default:jungleleaves")
+
+
+
+local function snow_onto_dirt(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
+
+
+
+-- Bricks
+
+nodedef = {
+	description = "Snow Brick",
+	tiles = {"snow_snow_brick.png"},
+	is_ground_content = true,
+	--freezemelt = "default:water_source", -- deprecated
+	liquidtype = "none",
+	paramtype = "light",
+	sunlight_propagates = true,
+	paramtype2 = "facedir", -- Allow blocks to be rotated with the screwdriver or
+	-- 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},
+	 --Let's use the new snow sounds instead of the old grass sounds. ~ 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 = true
+ibdef.drawtype = "glasslike"
+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)
+
+
+-- Snow Cobble  ~ LazyJ
+-- Described as Icy Snow
+nodedef.description = "Icy Snow"
+nodedef.tiles = {"snow_snow_cobble.png"}
+
+minetest.register_node("snow:snow_cobble", nodedef)
+
+
+
+-- Override Default Nodes to Add Extra Functions
+
+-- 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",
+	inventory_image  = minetest.inventorycube("default_ice.png").."^[brighten",
+	liquidtype = "none",
+	 -- 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
+})
+
+
+
+-- This adds code to the existing, default snowblock. ~ LazyJ
+minetest.override_item("default:snowblock", {
+	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
+})

mods/snow/src/sled.lua

@@ -0,0 +1,231 @@
+--[[
+--=================
+--======================================
+LazyJ's Fork of Splizard's "Snow" Mod
+by LazyJ
+version: Umpteen and 7/5ths something or another.
+2014_04_12
+--======================================
+--=================
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+THE LIST OF CHANGES I'VE MADE
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+
+* The HUD message that displayed when a player sat on the sled would not go away after the player
+got off the sled. I spent hours on trial-and-error while reading the lua_api.txt and scrounging
+the Internet for a needle-in-the-haystack solution as to why the hud_remove wasn't working.
+Turns out Splizard's code was mostly correct, just not assembled in the right order.
+
+The key to the solution was found in the code of leetelate's scuba mod:
+http://forum.minetest.net/viewtopic.php?id=7175
+
+* Changed the wording of the HUD message for clarity.
+
+
+~~~~~~
+TODO
+~~~~~~
+
+* Figure out why the player avatars remain in a seated position, even after getting off the sled,
+if they flew while on the sled. 'default.player_set_animation', where is a better explanation
+for this and what are it's available options?
+
+* Go through, clean-up my notes and get them better sorted. Some are in the code, some are
+scattered in my note-taking program. This "Oh, I'll just make a little tweak here and a
+little tweak there" project has evolved into something much bigger and more complex
+than I originally planned. :p  ~ LazyJ
+
+* find out why the sled disappears after rightclicking it ~ HybridDog
+
+--]]
+
+
+
+--=============================================================
+-- CODE STUFF
+--=============================================================
+
+--
+-- 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
+			return true
+		end
+	end
+	return false
+end
+
+local function is_water(pos)
+	return minetest.get_item_group(minetest.get_node(pos).name, "water") ~= 0
+end
+
+
+--
+-- Sled entity
+--
+
+local sled = {
+	physical = true,
+	collisionbox = {-0.6,-0.25,-0.6, 0.6,0.3,0.6},
+	visual = "mesh",
+	mesh = "sled.x",
+	textures = {"sled.png"},
+}
+
+local players_sled = {}
+local function join_sled(self, player)
+	local pos = self.object:getpos()
+	player:setpos(pos)
+	local name = player:get_player_name()
+	players_sled[name] = true
+	default.player_attached[name] = true
+	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:setyaw(player:get_look_yaw())-- - math.pi/2)
+end
+
+local function leave_sled(self, player)
+	local name = player:get_player_name()
+	players_sled[name] = false
+	self.driver = nil
+	self.object:set_detach()
+	default.player_attached[name] = false
+	default.player_set_animation(player, "stand" , 30)
+
+	player:set_physics_override({
+		speed = 1,
+		jump = 1,
+	})
+	player:hud_remove(self.HUD) -- And here is part 2. ~ LazyJ
+	self.object:remove()
+
+	--Give the sled back again
+	player:get_inventory():add_item("main", "snow:sled")
+end
+
+function sled:on_rightclick(player)
+	if self.driver
+	or not snow.sleds then
+		return
+	end
+	join_sled(self, player)
+	player:set_physics_override({
+		speed = 2, -- multiplier to default value
+		jump = 0, -- multiplier to default value
+	})
+
+-- Here is part 1 of the fix. ~ LazyJ
+	self.HUD = player:hud_add({
+		hud_elem_type = "text",
+		position = {x=0.5, y=0.89},
+		name = "sled",
+		scale = {x=2, y=2},
+		text = "You are on the sled! Press the sneak key to get off the sled.", -- LazyJ
+		direction = 0,
+	})
+-- End part 1
+end
+
+function sled:on_activate(staticdata, dtime_s)
+	self.object:set_armor_groups({immortal=1})
+	self.object:setacceleration({x=0, y=-10, z=0})
+	if staticdata then
+		self.v = tonumber(staticdata)
+	end
+end
+
+function sled:get_staticdata()
+	return tostring(self.v)
+end
+
+function sled:on_punch(puncher)
+	self.object:remove()
+	if puncher
+	and puncher:is_player() then
+		puncher:get_inventory():add_item("main", "snow:sled")
+	end
+end
+
+local driveable_nodes = {"default:snow","default:snowblock","default:ice","default:dirt_with_snow", "group:icemaker"}
+local function accelerating_possible(pos)
+	if is_water(pos) then
+		return false
+	end
+	if table_find(driveable_nodes, minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name) then
+		return true
+	end
+	return false
+end
+
+local timer = 0
+function sled:on_step(dtime)
+	if not self.driver then
+		return
+	end
+	timer = timer+dtime
+	if timer < 1 then
+		return
+	end
+	timer = 0
+	local player = minetest.get_player_by_name(self.driver)
+	if not player then
+		return
+	end
+	if player:get_player_control().sneak
+	or not accelerating_possible(vector.round(self.object:getpos())) then
+		leave_sled(self, player)
+	end
+end
+
+minetest.register_entity("snow:sled", sled)
+
+
+minetest.register_craftitem("snow:sled", {
+	description = "Sled",
+	inventory_image = "snow_sled.png",
+	wield_image = "snow_sled.png",
+	wield_scale = {x=2, y=2, z=1},
+	liquids_pointable = true,
+	stack_max = 1,
+
+	on_use = function(itemstack, placer)
+		if players_sled[placer:get_player_name()] then
+			return
+		end
+		local pos = placer:getpos()
+		if accelerating_possible(vector.round(pos)) then
+			pos.y = pos.y+0.5
+
+			--Get on the sled and remove it from inventory.
+			minetest.add_entity(pos, "snow:sled"):right_click(placer)
+			itemstack:take_item(); return itemstack
+		end
+	end,
+})
+
+minetest.register_craft({
+	output = "snow:sled",
+	recipe = {
+		{"", "", ""},
+		{"group:stick", "", ""},
+		{"group:wood", "group:wood", "group:wood"},
+	},
+})
+minetest.register_craft({
+	output = "snow:sled",
+	recipe = {
+		{"", "", ""},
+		{"", "", "group:stick"},
+		{"group:wood", "group:wood", "group:wood"},
+	},
+})

mods/snow/src/snowball.lua

@@ -0,0 +1,345 @@
+--============
+--Snowballs
+--============
+
+-- Snowballs were destroying nodes if the snowballs landed just right.
+-- 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.setting_getbool("creative_mode")
+
+local function get_gravity()
+	local grav = tonumber(minetest.setting_get("movement_gravity")) or 9.81
+	return grav*snow.snowball_gravity
+end
+
+local someone_throwing
+local timer = 0
+
+--Shoot snowball
+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:getpos(), addp)
+	local obj = minetest.add_entity(pos, "snow:snowball_entity")
+	obj:setvelocity(vector.multiply(dir, snow.snowball_velocity))
+	obj:setacceleration({x=dir.x*-3, y=-get_gravity(), z=dir.z*-3})
+	if creative_mode then
+		if not someone_throwing then
+			someone_throwing = true
+			timer = -0.5
+		end
+		return
+	end
+	item:take_item()
+	return item
+end
+
+if creative_mode then
+	local function update_step(dtime)
+		timer = timer+dtime
+		if timer < 0.006 then
+			return
+		end
+		timer = 0
+
+		local active
+		for _,player in pairs(minetest.get_connected_players()) do
+			if player:get_player_control().LMB then
+				local item = player:get_wielded_item()
+				local itemname = item:get_name()
+				if itemname == "default:snow" then
+					snow_shoot_snowball(nil, player)
+					active = true
+					break
+				end
+			end
+		end
+
+		-- disable the function if noone currently throws them
+		if not active then
+			someone_throwing = false
+		end
+	end
+
+	-- do automatic throwing using a globalstep
+	minetest.register_globalstep(function(dtime)
+		-- only if one holds left click
+		if someone_throwing then
+			update_step(dtime)
+		end
+	end)
+end
+
+--The snowball Entity
+local snow_snowball_ENTITY = {
+	physical = false,
+	timer = 0,
+	collisionbox = {-5/16,-5/16,-5/16, 5/16,5/16,5/16},
+}
+
+function snow_snowball_ENTITY.on_activate(self)
+	self.object:set_properties({textures = {"default_snowball.png^[transform"..math.random(0,7)}})
+	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:getvelocity()
+		if vel
+		and vel.y ~= 0 then
+			return
+		end
+		minetest.after(0, function(obj)
+			if not obj then
+				return
+			end
+			local vel = obj:getvelocity()
+			if not vel
+			or vel.y == 0 then
+				obj:remove()
+			end
+		end, obj)
+	end, self.object)
+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 > 600 then
+		-- 10 minutes are too long for a snowball to fly somewhere
+		self.object:remove()
+	end
+
+	if self.physical then
+		local fell = self.object:getvelocity().y == 0
+		if not fell then
+			return
+		end
+		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
+				return
+			end
+		end
+		snow.place(pos)
+		self.object:remove()
+		return
+	end
+
+	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:setacceleration({x=0, y=-get_gravity(), z=0})
+		--self.object:setvelocity({x=0, y=0, z=0})
+		pos = self.lastpos
+		self.object:setpos(pos)
+		local gain = vector.length(self.object:getvelocity())/30
+		minetest.sound_play("default_snow_footstep", {pos=pos, gain=gain})
+		self.object:set_properties({physical = true})
+		self.physical = true
+		return
+	end
+	self.lastpos = vector.new(pos)
+end
+
+
+
+minetest.register_entity("snow:snowball_entity", snow_snowball_ENTITY)
+
+
+
+-- Snowball and Default Snowball Merged
+
+-- They both look the same, they do basically the same thing (except one is a leftclick throw
+-- and the other is a rightclick drop),... Why not combine snow:snowball with default:snow and
+-- benefit from both? ~ LazyJ, 2014_04_08
+
+--[[ Save this for reference and occasionally compare to the default code for any updates.
+
+minetest.register_node(":default:snow", {
+	description = "Snow",
+	tiles = {"default_snow.png"},
+	inventory_image = "default_snowball.png",
+	wield_image = "default_snowball.png",
+	is_ground_content = true,
+	paramtype = "light",
+	buildable_to = true,
+	leveled = 7,
+	drawtype = "nodebox",
+	freezemelt = "default:water_flowing",
+	node_box = {
+		type = "leveled",
+		fixed = {
+			{-0.5, -0.5, -0.5,  0.5, -0.5+2/16, 0.5},
+		},
+	},
+	groups = {crumbly=3,falling_node=1, melts=1, float=1},
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name="default_snow_footstep", gain=0.25},
+		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
+			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
+			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
+	end,
+	on_use = snow_shoot_snowball  -- This line is from the 'Snow' mod, the reset is default Minetest.
+})
+--]]
+
+
+
+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.
+
+On servers where buckets are disabled, snow and ice stuff is used to set water for crops and
+water stuff like fountains, pools, ponds, ect.. It is a common practice to set a default torch on
+the snow placed where the players want water to be.
+
+If you place a default torch *on* default snow to melt it, instead of melting the snow is
+*replaced* by the torch. Using "buildable_to = false" would fix this but then the snow would no
+longer pile-up in layers; the snow would stack like thin shelves in a vertical column.
+
+I tinkered with the default torch's code (see below) to check for snow at the position and one
+node above (layered snow logs as the next y position above) but default snow's
+"buildable_to = true" always happened first. An interesting exercise to better learn how Minetest
+works, but otherwise not worth it. If you set a regular torch near snow, the snow will melt
+and disappear leaving you with nearly the same end result anyway. I say "nearly the same"
+because if you set a default torch on layered snow, the torch will replace the snow and be
+lit on the ground. If you were able to set a default torch *on* layered snow, the snow would
+melt and the torch would become a dropped item.
+
+~ LazyJ
+
+--]]
+
+
+-- Some of the ideas I tried. ~ LazyJ
+--[[
+local can_place_torch_on_top = function(pos)
+			if minetest.get_node({x=pos.x, y=pos.y, z=pos.z}).name == "default:snow"
+			or minetest.get_node({x=pos.x, y=pos.y+1, z=pos.z}).name == "default:snow" then
+				minetest.override_item("default:snow", {buildable_to = false,})
+			end
+		end
+--]]
+
+
+--[[
+minetest.override_item("default:torch", {
+	--on_construct = function(pos)
+	on_place = function(itemstack, placer, pointed_thing)
+		--if minetest.get_node({x=pos.x, y=pos.y, z=pos.z}).name == "default:snow"
+			-- Even though layered snow doesn't look like it's in the next position above (y+1)
+			-- it registers in that position. Check the terminal's output to see the coord change.
+		--or minetest.get_node({x=pos.x, y=pos.y+1, z=pos.z}).name == "default:snow"
+		if pointed_thing.name == "default:snow"
+		then minetest.set_node({x=pos.x, y=pos.y+1, z=pos.z}, {name="default:torch"})
+		end
+	end
+})
+--]]

mods/snow/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

mods/snow/src/util.lua

@@ -0,0 +1,156 @@
+--Global config and function table.
+snow = {
+	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,
+}
+
+--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)",
+}
+
+--Manage config.
+--Saves contents of config to file.
+local function saveConfig(path, config, doc)
+	local file = io.open(path,"w")
+	if file then
+		for i,v in pairs(config) do
+			local t = type(v)
+			if t == "string" or t == "number" or t == "boolean" then
+				if doc and doc[i] then
+					file:write("# "..doc[i].."\n")
+				end
+				file:write(i.." = "..tostring(v).."\n")
+			end
+		end
+	end
+end
+--Loads config and returns config values inside table.
+local function loadConfig(path)
+	local config = {}
+	local file = io.open(path,"r")
+  	if file then
+  		io.close(file)
+		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
+					if v == "true" then v = true end
+					if v == "false" then v = false end
+					if tonumber(v) then v = tonumber(v) end
+					config[i] = v
+				end
+			end
+		end
+		return config
+	else
+		--Create config file.
+		return nil
+	end
+end
+
+minetest.register_on_shutdown(function()
+	saveConfig(minetest.get_modpath("snow").."/config.txt", snow, doc)
+end)
+
+local config = loadConfig(minetest.get_modpath("snow").."/config.txt")
+if config then
+	for i,v in pairs(config) do
+		if type(snow[i]) == type(v) then
+			snow[i] = v
+		end
+	end
+else
+	saveConfig(minetest.get_modpath("snow").."/config.txt", snow, doc)
+end
+
+for i,v in pairs(snow) do
+	local t = type(v)
+	if t == "string"
+	or t == "number"
+	or t == "boolean" then
+		local v = minetest.setting_get("snow_"..i)
+		if v ~= nil then
+			if v == "true" then v = true end
+			if v == "false" then v = false end
+			if tonumber(v) then v = tonumber(v) end
+			snow[i] = v
+		end
+	end
+end
+
+
+--MENU
+
+local get_formspec = function()
+	local p = -0.5
+	local formspec = "label[0,-0.3;Settings:]"
+	for i,v in pairs(snow) do
+		local t = type(v)
+		if t == "string"
+		or t == "number" then
+			p = p + 1.5
+			formspec = formspec.."field[0.3,"..p..";2,1;snow:"..i..";"..i..";"..v.."]"
+		elseif t == "boolean" then
+			p = p + 0.5
+			formspec = formspec.."checkbox[0,"..p..";snow:"..i..";"..i..";"..tostring(v).."]"
+		end
+	end
+	p = p + 1
+	formspec = "size[4,"..p..";]\n"..formspec
+	return 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 t == "string" or t == "number" or t == "boolean" then
+			local field = fields["snow:"..i]
+			if field then
+				if t == "string" then
+					snow[i] = field
+				end
+				if t == "number" then
+					snow[i] = tonumber(field)
+				end
+				if t == "boolean" then
+					if field == "true" then
+						snow[i] = true
+					elseif field == "false" then
+						snow[i] = false
+					end
+				end
+			end
+		end
+	end
+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,
+})