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@ -14,7 +14,11 @@ end
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-- maps range of 0 to 1 to any other range
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local function map_range(val, low, high)
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return (val + low) * (high - low)
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-- NALC modif
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-- local cal_val = math.min(math.max(val, 0), 1)
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-- local range = high - low
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-- return low + (cal_val * range)
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return val * (high - low) + low
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end
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local function generate_effects(params)
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@ -26,8 +30,8 @@ local function generate_effects(params)
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local wind = climate_api.environment.get_wind({ x = 0, y = cloud_height, z = 0 })
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-- diffuse shadows when cloudy
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-- zero at density 0.65 and one at 0.15
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local cloud_shadows = 1.075 - (cloud_density / 0.5)
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-- cloud_shadows at zero at cloud density 0.65 and one at 0.15
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local cloud_shadows = 1 - ((cloud_density - 0.15) / (0.65 - 0.15))
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-- diffuse shadows at dawn / dusk
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-- 15 hours between dawn and dusk accoring to https://wiki.minetest.net/Time_of_day
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@ -36,8 +40,8 @@ local function generate_effects(params)
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-- zero at dawn / dusk and one at midday
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local daytime_shadows = 1 - (math.abs(0.5 - daytime) * 2 / daylight_duration)
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local shadow_intensity = map_range(cloud_shadows + daytime_shadows, 0.15, 0.5)
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local light_saturation = map_range(cloud_shadows + daytime_shadows, 0.8, 1.2)
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local shadow_intensity = map_range((cloud_shadows + daytime_shadows) / 2, 0.5, 2)
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local light_saturation = map_range((cloud_shadows + daytime_shadows) / 2, 0.75, 1.25)
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local skybox = {priority = 10}
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skybox.cloud_data = {
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