mirror of
https://github.com/sys4-fr/server-nalc.git
synced 2024-12-26 18:50:38 +01:00
194 lines
6.9 KiB
Lua
Executable File
194 lines
6.9 KiB
Lua
Executable File
-- snowdrift 0.3.0 by paramat
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-- For latest stable Minetest and back to 0.4.9 dev after 13/01/14
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-- Depends default
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-- Licenses: code WTFPL, textures CC BY-SA
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-- snowfall heaviness parameter
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-- rain off by default
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-- snow and rain heavier by default
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-- update particle spawn format
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-- Parameters
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local SCALP = 4 -- Time scale for precipitation in minutes
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local PRET = 0.3 -- -1 to 1. Precipitation threshold: 1 none, -1 continuous, -0.3 two thirds the time, 0 half the time, 0.3 one third the time
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local PPPCHA = 0.1 -- 0 to 1. Per player processing chance. Controls and randomizes processing load
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local SETCHA = 0.1 -- 0 to 1. Snow settling chance
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local FLAKES = 1 -- Snowfall heaviness. Try 1 on slower computers
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local DROPS = 2 -- Rainfall heaviness. Reduce on slower computers
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local SNOW = true -- Snowfall below temperature threshold
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local SETTLE = false -- Snow collects on ground within 32 nodes of player
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local RAIN = false -- Rain above humidity threshold
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local THOVER = false -- Instead use a temperature and humidity system with
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-- snow in overlap of cold and humid areas, else rain in humid areas
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-- Temperature noise parameters
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local SEEDT = 112 -- 112 These are default noise parameters from snow mod by Splizard
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local OCTAT = 3 -- 3 use these for snowfall in those snow biomes
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local PERST = 0.5 -- 0.5
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local SCALT = 256 -- 150, modified for Watershed
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local TET = -0.53 -- -0.53 Temperature threshold for snow. Negative because here this noise is temperature, in snow mod it's coldness
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-- Humidity noise parameters
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local SEEDH = 72384 -- 72384 These are default noise parameters for mapgen V6 humidity
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local OCTAH = 4 -- 4 note these cause rain in deserts
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local PERSH = 0.66 -- 0.66
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local SCALH = 256 -- 500, modified for Watershed
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local HUT = 0 -- Humidity threshold for rain
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-- Stuff
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snowdrift = {}
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-- Globalstep function
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minetest.register_globalstep(function(dtime)
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local perlinp = minetest.get_perlin(813, 1, 0.5, SCALP)
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if perlinp:get2d({x = os.clock()/60, y = 0}) < PRET then
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return
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end
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for _, player in ipairs(minetest.get_connected_players()) do
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if math.random() > PPPCHA or player:getpos().y < -19600 then
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return
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end
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local ppos = player:getpos()
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if minetest.get_node_light(ppos, 0.5) ~= 15 then
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return
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end
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local pposx = math.floor(ppos.x)
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local pposy = math.floor(ppos.y)
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local pposz = math.floor(ppos.z)
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local snow = false
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local rain = false
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local noiset
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local noiseh
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if SNOW or THOVER then
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local perlint = minetest.get_perlin(SEEDT, OCTAT, PERST, SCALT)
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noiset = perlint:get2d({x = pposx, y = pposz})
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end
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if RAIN or THOVER then
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local perlinh = minetest.get_perlin(SEEDH, OCTAH, PERSH, SCALH)
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noiseh = perlinh:get2d({x = pposx, y = pposz})
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end
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if THOVER then
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if noiset < TET and noiseh > HUT then
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snow = true
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elseif noiseh > HUT then
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rain = true
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end
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elseif SNOW then
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if -noiset < TET then -- negative sign because snow mod noise is 'coldness'
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snow = true
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elseif RAIN then
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if noiseh > HUT then
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rain = true
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end
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end
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elseif RAIN then
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if noiseh > HUT then
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rain = true
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end
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end
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if snow then
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for flake = 1, FLAKES do
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minetest.add_particle({
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pos = {x=pposx-32+math.random(0,63), y=pposy+16, z=pposz-16+math.random(0,63)},
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vel = {x=math.random()/5-0.1, y=math.random()/5-1.1, z=math.random()/5-1.1},
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acc = {x=math.random()/50-0.01, y=math.random()/50-0.01, z=math.random()/50-0.01},
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expirationtime = 32,
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size = 2.8,
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collisiondetection = false,
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vertical = false,
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texture = "snowdrift_snowflake1.png",
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playername = player:get_player_name(),
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})
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minetest.add_particle({
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pos = {x=pposx-32+math.random(0,63), y=pposy+16, z=pposz-16+math.random(0,63)},
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vel = {x=math.random()/5-0.1, y=math.random()/5-1.1, z=math.random()/5-1.1},
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acc = {x=math.random()/50-0.01, y=math.random()/50-0.01, z=math.random()/50-0.01},
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expirationtime = 32,
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size = 2.8,
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collisiondetection = false,
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vertical = false,
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texture = "snowdrift_snowflake2.png",
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playername = player:get_player_name(),
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})
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minetest.add_particle({
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pos = {x=pposx-32+math.random(0,63), y=pposy+16, z=pposz-16+math.random(0,63)},
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vel = {x=math.random()/5-0.1, y=math.random()/5-1.1, z=math.random()/5-1.1},
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acc = {x=math.random()/50-0.01, y=math.random()/50-0.01, z=math.random()/50-0.01},
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expirationtime = 32,
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size = 2.8,
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collisiondetection = false,
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vertical = false,
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texture = "snowdrift_snowflake3.png",
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playername = player:get_player_name(),
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})
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minetest.add_particle({
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pos = {x=pposx-32+math.random(0,63), y=pposy+16, z=pposz-16+math.random(0,63)},
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vel = {x=math.random()/5-0.1, y=math.random()/5-1.1, z=math.random()/5-1.1},
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acc = {x=math.random()/50-0.01, y=math.random()/50-0.01, z=math.random()/50-0.01},
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expirationtime = 32,
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size = 2.8,
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collisiondetection = false,
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vertical = false,
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texture = "snowdrift_snowflake4.png",
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playername = player:get_player_name(),
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})
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end
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if SETTLE and math.random() < SETCHA then -- settling snow
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local sposx = pposx - 32 + math.random(0, 63)
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local sposz = pposz - 32 + math.random(0, 63)
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if minetest.get_node_light({x=sposx, y=pposy+32, z=sposz}, 0.5) == 15 then -- check under open sky
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for y = pposy + 32, pposy - 64, -1 do -- find surface
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local nodename = minetest.get_node({x=sposx, y=y, z=sposz}).name
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if nodename ~= "air" and nodename ~= "ignore" then
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if nodename == "default:desert_sand" -- no snow on these
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or nodename == "default:desert_stone"
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or nodename == "default:water_source" then
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break
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else -- check node drawtype
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local drawtype = minetest.registered_nodes[nodename].drawtype
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if drawtype == "normal"
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or drawtype == "glasslike"
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or drawtype == "glasslike_framed"
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or drawtype == "allfaces"
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or drawtype == "allfaces_optional" then
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if nodename == "default:dirt_with_grass" then
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minetest.add_node({x=sposx, y=y, z=sposz}, {name="default:dirt_with_snow"})
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end
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minetest.add_node({x=sposx, y=y+1, z=sposz}, {name="default:snow"})
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break
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elseif drawtype == "plantlike" then -- dirt with snow added under plants
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local unodename = minetest.get_node({x=sposx, y=y-1, z=sposz}).name
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if unodename == "default:dirt_with_grass" then
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minetest.add_node({x=sposx, y=y-1, z=sposz}, {name="default:dirt_with_snow"})
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end
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break
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else
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break
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end
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end
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end
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end
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end
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end
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end
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if rain then
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for drop = 1, DROPS do
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minetest.add_particle({
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pos = {x=pposx-24+math.random(0,48), y=pposy+16, z=pposz-24+math.random(0,48)},
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vel = {x=0, y=-8, z=-1},
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acc = {x=0, y=0, z=0},
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expirationtime = 4,
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size = 2.8,
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collisiondetection = false,
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vertical = false,
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texture = "snowdrift_raindrop.png",
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playername = player:get_player_name(),
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})
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end
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end
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end
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end)
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