add paramats snowdrift and tweak the settings to be complicit with solar plains biome system

minetest.conf

@@ -1,3 +1,4 @@
-secure.enable_security = false
+time_speed = 60
+
+#mapgen_settings_here
 
-time_speed = 60

mods/core/blocks.lua

@@ -694,6 +694,7 @@ minetest.register_node("core:cactus", {
 	mesh = "core_cactus.b3d",
 	groups = {choppy=3, flammable=2},
 	sounds = mcore.sound_wood,
+	damage_per_second = 1,
 })
 
 minetest.register_node("core:grass_1", {

mods/snowdrift/README.txt

@@ -0,0 +1,11 @@
+snowdrift 0.5.1 by paramat
+For Minetest 0.4.15 and later
+Depends default
+
+Licenses:
+Source code:
+MIT by paramat
+Media:
+Textures CC BY-SA (3.0) by paramat
+Sounds CC BY (3.0) by inchadney
+http://freesound.org/people/inchadney/sounds/58835/ 

mods/snowdrift/depends.txt

@@ -0,0 +1,2 @@
+core
+atmos

mods/snowdrift/init.lua

@@ -0,0 +1,248 @@
+-- Parameters
+
+local YLIMIT = 1 -- Set to world's water level or level of lowest open area,
+				-- calculations are disabled below this y.
+local PRECSPR = 6 -- Time scale for precipitation variation in minutes
+local PRECOFF = -0.4 -- Precipitation offset, higher = rains more often
+local GSCYCLE = 0.5 -- Globalstep cycle (seconds)
+local FLAKES = 32 -- Snowflakes per cycle
+local DROPS = 96 -- Raindrops per cycle
+local RAINGAIN = 0.12 -- Rain sound volume
+local COLLIDE = false -- Whether particles collide with nodes
+local NISVAL = 39 -- Clouds RGB value at night
+local DASVAL = 175 -- Clouds RGB value in daytime
+
+local np_prec = {
+	offset = 0,
+	scale = 1,
+	spread = {x = PRECSPR, y = PRECSPR, z = PRECSPR},
+	seed = 813,
+	octaves = 1,
+	persist = 0,
+	lacunarity = 2.0,
+	--flags = ""
+}
+
+-- These 2 must match biome heat and humidity noise parameters for a world
+
+local np_temp = {
+	offset = 50,
+	scale = 50,
+	spread = {x = 1000, y = 1000, z = 1000},
+	seed = 5349,
+	octaves = 3,
+	persist = 0.5,
+	lacunarity = 2.0,
+	--flags = ""
+}
+
+local np_humid = {
+	offset = 50,
+	scale = 50,
+	spread = {x = 1000, y = 1000, z = 1000},
+	seed = 842,
+	octaves = 3,
+	persist = 0.5,
+	lacunarity = 2.0,
+	--flags = ""
+}
+
+
+-- Stuff
+
+local difsval = DASVAL - NISVAL
+local grad = 14 / 95
+local yint = 1496 / 95
+
+
+-- Initialise noise objects to nil
+
+local nobj_temp = nil
+local nobj_humid = nil
+local nobj_prec = nil
+
+
+-- Globalstep function
+
+local handles = {}
+local timer = 0
+
+minetest.register_globalstep(function(dtime)
+	timer = timer + dtime
+	if timer < GSCYCLE then
+		return
+	end
+
+	timer = 0
+
+	for _, player in ipairs(minetest.get_connected_players()) do
+		local player_name = player:get_player_name()
+		local ppos = player:getpos()
+		local pposy = math.floor(ppos.y) + 2 -- Precipitation when swimming
+		if pposy >= YLIMIT then
+			local pposx = math.floor(ppos.x)
+			local pposz = math.floor(ppos.z)
+			local ppos = {x = pposx, y = pposy, z = pposz}
+
+			local nobj_temp = nobj_temp or minetest.get_perlin(np_temp)
+			local nobj_humid = nobj_humid or minetest.get_perlin(np_humid)
+			local nobj_prec = nobj_prec or minetest.get_perlin(np_prec)
+
+			local nval_temp = nobj_temp:get2d({x = pposx, y = pposz})
+			local nval_humid = nobj_humid:get2d({x = pposx, y = pposz})
+			local nval_prec = nobj_prec:get2d({x = os.clock() / 60, y = 0})
+
+			-- Biome system: Frozen biomes below heat 35,
+			-- deserts below line 14 * t - 95 * h = -1496
+			-- h = (14 * t + 1496) / 95
+			-- h = 14/95 * t + 1496/95
+			-- where 14/95 is gradient and 1496/95 is y intersection
+			-- h - 14/95 t = 1496/95 y intersection
+			-- so area above line is
+			-- h - 14/95 t > 1496/95
+			--local freeze = nval_temp < 35
+			--local precip = nval_prec < (nval_humid - 50) / 50 + PRECOFF and
+				--nval_humid - grad * nval_temp > yint
+			
+			-- solar plains biomes to rain in;
+			
+			--[[
+			
+				plains
+				forests
+				beach?
+				
+				min temp to rain
+				
+				40
+				
+				max temp to rain
+				
+				60
+				
+				max humidity to rain
+
+				
+			
+			]]--
+			
+			local precip = false
+			
+			local freeze = false
+			
+			if atmos.current_weather == 6 or atmos.current_weather == 7 or atmos.current_weather == 8 or atmos.current_weather == 9 and nval_humid > 24 and nval_temp > 36 and nval_temp < 61 then
+			
+				precip = true
+				
+				freeze = false
+				
+			elseif atmos.current_weather == 9 and nval_temp < 37 then
+			
+				precip = true
+				
+				freeze = true
+				
+			else
+			
+				precip = false
+				
+				freeze = false
+			
+			end
+			
+			-- Check if player is outside
+			local outside = minetest.get_node_light(ppos, 0.5) == 15
+
+			if not precip or not outside or freeze then
+				if handles[player_name] then
+					-- Stop sound if playing
+					minetest.sound_stop(handles[player_name])
+					handles[player_name] = nil
+				end
+			end
+
+			if precip and outside then
+				-- Precipitation
+				if freeze then
+					-- Snowfall
+					for flake = 1, FLAKES do
+						minetest.add_particle({
+							pos = {
+								x = pposx - 24 + math.random(0, 47),
+								y = pposy + 8 + math.random(0, 1),
+								z = pposz - 20 + math.random(0, 47)
+							},
+							vel = {
+								x = 0.0,
+								y = -2.0,
+								z = -1.0
+							},
+							acc = {x = 0, y = 0, z = 0},
+							expirationtime = 8.5,
+							size = 2.8,
+							collisiondetection = COLLIDE,
+							collision_removal = true,
+							vertical = false,
+							texture = "snowdrift_snowflake" .. math.random(1, 4) .. ".png",
+							playername = player:get_player_name()
+						})
+					end
+				else
+					-- Rainfall
+					for flake = 1, DROPS do
+						minetest.add_particle({
+							pos = {
+								x = pposx - 8 + math.random(0, 16),
+								y = pposy + 8 + math.random(0, 5),
+								z = pposz - 8 + math.random(0, 16)
+							},
+							vel = {
+								x = 0.0,
+								y = -10.0,
+								z = 0.0
+							},
+							acc = {x = 0, y = 0, z = 0},
+							expirationtime = 2.1,
+							size = 2.8,
+							collisiondetection = COLLIDE,
+							collision_removal = true,
+							vertical = true,
+							texture = "snowdrift_raindrop.png",
+							playername = player:get_player_name()
+						})
+					end
+
+					if not handles[player_name] then
+						-- Start sound if not playing
+						local handle = minetest.sound_play(
+							"snowdrift_rain",
+							{
+								to_player = player_name,
+								gain = RAINGAIN,
+								loop = true,
+							}
+						)
+						if handle then
+							handles[player_name] = handle
+						end
+					end
+				end
+			end
+		elseif handles[player_name] then
+			-- Stop sound when player goes under y limit
+			minetest.sound_stop(handles[player_name])
+			handles[player_name] = nil
+		end
+	end
+end)
+
+
+-- Stop sound and remove player handle on leaveplayer
+
+minetest.register_on_leaveplayer(function(player)
+	local player_name = player:get_player_name()
+	if handles[player_name] then
+		minetest.sound_stop(handles[player_name])
+		handles[player_name] = nil
+	end
+end)

mods/snowdrift/license.txt

@@ -0,0 +1,91 @@
+License of source code
+----------------------
+
+The MIT License (MIT)
+Copyright (C) 2017 paramat
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+For more details:
+https://opensource.org/licenses/MIT
+
+
+License of media (textures)
+---------------------------
+
+Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+Copyright (C) 2017 paramat
+
+You are free to:
+Share — copy and redistribute the material in any medium or format.
+Adapt — remix, transform, and build upon the material for any purpose, even commercially.
+The licensor cannot revoke these freedoms as long as you follow the license terms.
+
+Under the following terms:
+
+Attribution — You must give appropriate credit, provide a link to the license, and
+indicate if changes were made. You may do so in any reasonable manner, but not in any way
+that suggests the licensor endorses you or your use.
+
+ShareAlike — If you remix, transform, or build upon the material, you must distribute
+your contributions under the same license as the original.
+
+No additional restrictions — You may not apply legal terms or technological measures that
+legally restrict others from doing anything the license permits.
+
+Notices:
+
+You do not have to comply with the license for elements of the material in the public
+domain or where your use is permitted by an applicable exception or limitation.
+No warranties are given. The license may not give you all of the permissions necessary
+for your intended use. For example, other rights such as publicity, privacy, or moral
+rights may limit how you use the material.
+
+For more details:
+http://creativecommons.org/licenses/by-sa/3.0/
+
+
+License of media (sounds)
+-------------------------
+
+Attribution 3.0 Unported (CC BY 3.0)
+Copyright (C) 2008 inchadney
+
+You are free to:
+Share — copy and redistribute the material in any medium or format.
+Adapt — remix, transform, and build upon the material for any purpose, even commercially.
+The licensor cannot revoke these freedoms as long as you follow the license terms.
+
+Under the following terms:
+
+Attribution — You must give appropriate credit, provide a link to the license, and
+indicate if changes were made. You may do so in any reasonable manner, but not in any way
+that suggests the licensor endorses you or your use.
+
+No additional restrictions — You may not apply legal terms or technological measures that
+legally restrict others from doing anything the license permits.
+
+Notices:
+
+You do not have to comply with the license for elements of the material in the public
+domain or where your use is permitted by an applicable exception or limitation.
+No warranties are given. The license may not give you all of the permissions necessary
+for your intended use. For example, other rights such as publicity, privacy, or moral
+rights may limit how you use the material.
+
+For more details:
+http://creativecommons.org/licenses/by/3.0/

mods/solarinfusion.txt

@@ -0,0 +1,34 @@
+--solarinfuser, a neat and fancy energy mod
+
+-- namespacing, as per usual.
+
+solarinfuser = {}
+
+-- create the pipe nodeboxes
+
+solarinfuser.pipe_middle = {-0.125, -0.125, -0.125, 0.125, 0.125, 0.125}
+
+solarinfuser.pipe_up = {
+	{-0.1875, 0.3125, -0.1875, 0.1875, 0.375, 0.1875}, -- ring (will always be this format and )
+	{-0.125, 0.125, -0.125, }, -- pipe
+}
+
+solarinfuser.pipe_down = {
+
+}
+
+solarinfuser.pipe_left = {
+
+}
+
+solarinfuser.pipe_right = {
+
+}
+
+solarinfuser.pipe_front = {
+
+}
+
+solarinfuser.pipe_back = {
+
+}