regional_weather/abms/puddle.lua

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local BLOCK_PREFIX = "regional_weather:puddle_"
local VARIANT_COUNT = 39
local CHECK_DISTANCE = 4
local MAX_AMOUNT = 3
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local GROUND_COVERS = {
"group:soil",
"group:stone",
"group:sand",
"group:wood",
"default:permafrost",
"default:permafrost_with_moss",
"default:permafrost_with_stones"
}
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local S = regional_weather.i18n
-- clean up puddles if disabled
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if not regional_weather.settings.puddles then
-- set all puddle nodes to air
minetest.register_alias("regional_weather:puddle", "air")
for i = 1, VARIANT_COUNT do
for flip = 0, 1 do
local name = BLOCK_PREFIX .. i
if flip == 1 then
name = name .. "_flipped"
end
minetest.register_alias(name, "air")
end
end
-- return air instead of a puddle
function regional_weather.get_random_puddle()
return { name = "air" }
end
-- end puddle execution
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return
end
local node_box = {
type = "fixed",
fixed = { -0.5, -0.5, -0.5, 0.5, -0.49, 0.5 }
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}
local apply_water_group
if regional_weather.settings.puddles_water then
apply_water_group = 1
end
for i = 1, VARIANT_COUNT do
for flip = 0, 1 do
local name = BLOCK_PREFIX .. i
local index = i
if i < 10 then index = "0" .. i end
local texture = "weather_puddle_" .. index .. ".png^[opacity:24"
if flip == 1 then
name = name .. "_flipped"
texture = texture .. "^[transformFX"
end
minetest.register_node(name, {
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description = S("Puddle"),
tiles = { texture },
drawtype = "nodebox",
pointable = false,
buildable_to = true,
floodable = true,
walkable = false,
sunlight_propagates = true,
paramtype = "light",
paramtype2 = "facedir",
use_texture_alpha = "blend",
node_box = node_box,
groups = {
not_in_creative_inventory = 1,
crumbly = 3,
attached_node = 1,
slippery = 1,
flora = 1,
water = apply_water_group,
weather_puddle = 1
},
drop = ""
})
end
end
minetest.register_alias("regional_weather:puddle", BLOCK_PREFIX .. "14")
function regional_weather.get_random_puddle()
local index = math.random(1, VARIANT_COUNT)
local rotation = math.random(0, 3) * 90
local flip = math.random(0, 1)
local name = BLOCK_PREFIX .. index
if flip == 1 then
name = name .. "_flipped"
end
local param2 = minetest.dir_to_facedir(minetest.yaw_to_dir(rotation))
return { name = name, param2 = param2 }
end
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-- Makes Puddles when raining
climate_api.register_abm({
label = "create rain puddles",
nodenames = GROUND_COVERS,
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neighbors = { "air" },
interval = 8,
chance = 150,
catch_up = false,
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conditions = {
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min_height = regional_weather.settings.min_height,
max_height = regional_weather.settings.max_height,
min_heat = 35,
min_humidity = 50,
min_biome_humidity = 26,
daylight = 15,
indoors = false,
not_biome = {
"cold_desert",
"cold_desert_ocean",
"desert",
"desert_ocean",
"sandstone_desert",
"sandstone_desert_ocean",
"tundra"
}
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},
pos_override = function(pos)
return vector.add(pos, { x = 0, y = 1, z = 0 })
end,
action = function (pos, node, env)
-- only override air nodes
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if minetest.get_node(pos).name ~= "air" then return end
-- do not place puddle if area is not fully loaded
if minetest.find_node_near(pos, CHECK_DISTANCE, "ignore") then return end
-- do not place puddle if already enpugh puddles
local pos1 = vector.add(pos, { x = -CHECK_DISTANCE, y = -1, z = -CHECK_DISTANCE })
local pos2 = vector.add(pos, { x = CHECK_DISTANCE, y = 1, z = CHECK_DISTANCE })
local preplaced = minetest.find_nodes_in_area(pos1, pos2, "group:weather_puddle")
if preplaced ~= nil and #preplaced >= MAX_AMOUNT then return end
minetest.set_node(pos, regional_weather.get_random_puddle())
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end
})
-- Makes puddles dry up when not raining
climate_api.register_abm({
label = "remove rain puddles",
nodenames = { "group:weather_puddle" },
interval = 25,
chance = 30,
catch_up = true,
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action = function (pos, node, env)
minetest.remove_node(pos)
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end
})