regional_weather/abms/snow_cover.lua

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local BLOCK_PREFIX = "regional_weather:snow_cover_"
if not minetest.get_modpath("default")
or default.node_sound_snow_defaults == nil
or not regional_weather.settings.snow then
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for i = 1,5 do
minetest.register_alias(BLOCK_PREFIX .. i, "air")
end
return
end
local destruction_handler = function(pos)
pos.y = pos.y - 1
if minetest.get_node(pos).name == "default:dirt_with_snow" then
minetest.set_node(pos, {name = "default:dirt_with_grass"})
end
end
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for i = 1,5 do
local node_box = {
type = "fixed",
fixed = {-0.5, -0.5, -0.5, 0.5, 0.2*i - 0.5, 0.5}
}
minetest.register_node(BLOCK_PREFIX .. i, {
tiles = { "default_snow.png" },
drawtype = "nodebox",
buildable_to = i < 3,
floodable = true,
walkable = i > 3,
paramtype = "light",
node_box = node_box,
groups = {
not_in_creative_inventory = 1,
crumbly = 3,
falling_node = 1,
snowy = 1,
regional_weather_snow_cover = i
},
sounds = default.node_sound_snow_defaults(),
drop = "default:snow " .. math.ceil(i / 2),
on_construct = function(pos)
pos.y = pos.y - 1
if minetest.get_node(pos).name == "default:dirt_with_grass" then
minetest.set_node(pos, {name = "default:dirt_with_snow"})
end
end,
on_destruct = destruction_handler,
on_flood = destruction_handler
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})
end
climate_api.register_abm({
label = "create snow covers",
nodenames = {
"group:soil",
"group:leaves",
"group:stone",
"default:snowblock",
"group:coverable_by_snow"
},
neighbors = { "air" },
interval = 25,
chance = 40,
catch_up = false,
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conditions = {
min_height = regional_weather.settings.min_height,
max_height = regional_weather.settings.max_height,
min_humidity = 55,
max_heat = 30,
daylight = 15
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},
pos_override = function(pos)
return vector.add(pos, { x = 0, y = 1, z = 0 })
end,
action = function (pos, node, env)
if node.name ~= "air" then return end
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local base = minetest.get_node(vector.add(pos, {x=0, y=-1, z=0})).name
local is_soil = minetest.get_item_group(base, "soil") or 0
local is_stone = minetest.get_item_group(base, "stone") or 0
if not (is_soil == 0 and is_stone == 0) then
minetest.set_node(pos, { name = BLOCK_PREFIX .. "1" })
end
end
})
climate_api.register_abm({
label = "replace flora with snow covers and stack covers higher",
nodenames = {
"group:flora",
"group:grass",
"group:plant",
"group:regional_weather_snow_cover"
},
neighbors = { "air" },
interval = 25,
chance = 30,
catch_up = false,
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conditions = {
min_height = regional_weather.settings.min_height,
max_height = regional_weather.settings.max_height,
min_humidity = 55,
max_heat = 30,
daylight = 15
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},
action = function (pos, node, env)
local value = minetest.get_item_group(node.name, "regional_weather_snow_cover")
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if value == nil then value = 0 end
if value < 5 then
minetest.set_node(pos, { name = BLOCK_PREFIX .. (value + 1) })
end
end
})
climate_api.register_abm({
label = "melt snow covers",
nodenames = { "group:regional_weather_snow_cover" },
interval = 25,
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chance = 10,
catch_up = true,
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conditions = {
min_heat = 30
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},
action = function (pos, node, env)
local value = minetest.get_item_group(node.name, "regional_weather_snow_cover")
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if value == nil then value = 0 end
if value > 1 then
minetest.set_node(pos, { name = BLOCK_PREFIX .. (value - 1) })
elseif regional_weather.settings.puddles then
minetest.set_node(pos, { name = "regional_weather:puddle" })
else
minetest.set_node(pos, { name = "air" })
end
end
})