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Add initial 'weather' mod to vary cloud density, thickness, velocity
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Minetest Game mod: weather | ||
========================== | ||
See license.txt for license information. | ||
Source code by paramat (MIT). |
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-- Disable by mapgen or setting | ||
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local mg_name = minetest.get_mapgen_setting("mg_name") | ||
if mg_name == "v6" or mg_name == "singlenode" or | ||
minetest.settings:get_bool("enable_weather") == false then | ||
return | ||
end | ||
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-- Parameters | ||
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local TSCALE = 600 -- Time scale of noise variation in seconds | ||
local CYCLE = 8 -- Time period of cyclic clouds update in seconds | ||
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local np_density = { | ||
offset = 0.5, | ||
scale = 0.5, | ||
spread = {x = TSCALE, y = TSCALE, z = TSCALE}, | ||
seed = 813, | ||
octaves = 1, | ||
persist = 0, | ||
lacunarity = 2, | ||
} | ||
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local np_thickness = { | ||
offset = 0.5, | ||
scale = 0.5, | ||
spread = {x = TSCALE, y = TSCALE, z = TSCALE}, | ||
seed = 96, | ||
octaves = 1, | ||
persist = 0, | ||
lacunarity = 2, | ||
} | ||
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local np_speedx = { | ||
offset = 0, | ||
scale = 1, | ||
spread = {x = TSCALE, y = TSCALE, z = TSCALE}, | ||
seed = 911923, | ||
octaves = 1, | ||
persist = 0, | ||
lacunarity = 2, | ||
} | ||
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local np_speedz = { | ||
offset = 0, | ||
scale = 1, | ||
spread = {x = TSCALE, y = TSCALE, z = TSCALE}, | ||
seed = 5728, | ||
octaves = 1, | ||
persist = 0, | ||
lacunarity = 2, | ||
} | ||
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-- End parameters | ||
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-- Initialise noise objects to nil | ||
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local nobj_density = nil | ||
local nobj_thickness = nil | ||
local nobj_speedx = nil | ||
local nobj_speedz = nil | ||
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-- Update clouds function | ||
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local function rangelim(value, lower, upper) | ||
return math.min(math.max(value, lower), upper) | ||
end | ||
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local os_time_0 = os.time() | ||
local t_offset = math.random(0, 300000) | ||
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local function update_clouds() | ||
-- Time in seconds. | ||
-- Add random time offset to avoid identical behaviour each server session. | ||
local time = os.difftime(os.time(), os_time_0) - t_offset | ||
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nobj_density = nobj_density or minetest.get_perlin(np_density) | ||
nobj_thickness = nobj_thickness or minetest.get_perlin(np_thickness) | ||
nobj_speedx = nobj_speedx or minetest.get_perlin(np_speedx) | ||
nobj_speedz = nobj_speedz or minetest.get_perlin(np_speedz) | ||
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local n_density = nobj_density:get2d({x = time, y = 0}) | ||
local n_thickness = nobj_thickness:get2d({x = time, y = 0}) | ||
local n_speedx = nobj_speedx:get2d({x = time, y = 0}) | ||
local n_speedz = nobj_speedz:get2d({x = time, y = 0}) | ||
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for _, player in ipairs(minetest.get_connected_players()) do | ||
local humid = minetest.get_humidity(player:get_pos()) | ||
player:set_clouds({ | ||
density = rangelim(humid / 100, 0.25, 1.0) * n_density, | ||
thickness = math.max(math.floor( | ||
rangelim(32 * humid / 100, 8, 32) * n_thickness | ||
), 1), | ||
speed = {x = n_speedx * 4, z = n_speedz * 4}, | ||
}) | ||
end | ||
end | ||
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local function cyclic_update() | ||
update_clouds() | ||
minetest.after(CYCLE, cyclic_update) | ||
end | ||
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minetest.after(0, cyclic_update) | ||
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-- Update on player join to instantly alter clouds from the default | ||
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minetest.register_on_joinplayer(function(player) | ||
update_clouds() | ||
end) |
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License of source code | ||
---------------------- | ||
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The MIT License (MIT) | ||
Copyright (C) 2019 paramat | ||
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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: | ||
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The above copyright notice and this permission notice shall be included in all copies or | ||
substantial portions of the Software. | ||
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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. | ||
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For more details: | ||
https://opensource.org/licenses/MIT |
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name = weather | ||
description = Minetest Game mod: weather |
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