mirror of
https://github.com/t-affeldt/regional_weather.git
synced 2024-11-18 00:18:21 +01:00
67 lines
2.0 KiB
Lua
67 lines
2.0 KiB
Lua
local name = "regional_weather:ambient"
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local conditions = {}
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-- see https://en.wikipedia.org/wiki/Cloud_base
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local function calc_cloud_height(heat, humidity, dewpoint)
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local base = regional_weather.settings.cloud_height
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-- much lower scale like 20 instead of 1000 fitting for Minetest
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local scale = regional_weather.settings.cloud_scale
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local spread = heat - dewpoint
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local variation = spread / 4.4 * scale * 0.3
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return base + climate_api.utility.rangelim(variation, -scale, scale)
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end
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local function generate_effects(params)
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local override = {}
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local cloud_height = calc_cloud_height(params.heat, params.humidity, params.dewpoint)
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local wind = climate_api.environment.get_wind({ x = 0, y = cloud_height, z = 0 })
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local skybox = {priority = 10}
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skybox.cloud_data = {
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density = climate_api.utility.rangelim(params.humidity / 100, 0.15, 0.65),
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speed = wind,
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thickness = climate_api.utility.rangelim(params.base_humidity * 0.2, 1, 18),
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height = cloud_height,
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ambient = "#0f0f1050"
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}
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if params.height > -100 and params.humidity > 40 then
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skybox.cloud_data.color = "#b2a4a4b0"
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end
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if params.height > -100 and params.humidity > 65 then
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skybox.sky_data = {
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type = "regular",
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clouds = true,
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sky_color = {
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day_sky = "#6a828e",
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day_horizon = "#5c7a8a",
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dawn_sky = "#b2b5d7",
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dawn_horizon = "#b7bce1",
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night_sky = "#2373e1",
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night_horizon = "#315d9b"
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}
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}
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skybox.cloud_data.color = "#828e97b5"
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skybox.cloud_data.ambient = "#20212250"
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end
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override["climate_api:skybox"] = skybox
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local movement = params.player:get_player_velocity()
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local movement_direction
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if (vector.length(movement) < 0.1) then
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movement_direction = vector.new(0, 0, 0)
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else
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movement_direction = vector.normalize(movement)
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end
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local vector_product = vector.dot(movement_direction, wind)
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local movement_penalty = climate_api.utility.sigmoid(vector_product, 1.5, 0.15, 0.9) + 0.2
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override["regional_weather:speed_buff"] = movement_penalty
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return override
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end
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climate_api.register_weather(name, conditions, generate_effects)
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