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Night clouds: Boost brightness for a moonlit appearence (#7748)

Previously, night clouds were almost indistinguishable from night sky,
especially since a recent commit that made night sky brighter.
They were lacking the beautiful luminosity caused by being lit by the
permanently-full moon.

When 'directional_colored_fog = false' allow the dawn/dusk cloud
brightness boost to apply through the night too.
Set an identical minimum cloud brightness for when
'directional_colored_fog = true'.
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paramat committed Oct 1, 2018
1 parent a29bc8e commit dc948382f57c34a7da358bba85c04513877fe2c3
Showing with 10 additions and 5 deletions.
  1. +10 −5 src/sky.cpp
@@ -721,15 +721,20 @@ void Sky::update(float time_of_day, float time_brightness,
m_skycolor = m_mix_scolor(m_skycolor, pointcolor, m_horizon_blend() * 0.25);
}

float cloud_direct_brightness = 0;
float cloud_direct_brightness = 0.0f;
if (sunlight_seen) {
if (!m_directional_colored_fog) {
cloud_direct_brightness = time_brightness;
if (time_brightness >= 0.2 && time_brightness < 0.7)
cloud_direct_brightness *= 1.3;
// Boost cloud brightness relative to sky, at dawn, dusk and at night
if (time_brightness < 0.7f)
cloud_direct_brightness *= 1.3f;
} else {
cloud_direct_brightness = MYMIN(m_horizon_blend() * 0.15 +
m_time_brightness, 1);
cloud_direct_brightness = std::fmin(m_horizon_blend() * 0.15f +
m_time_brightness, 1.0f);
// Set the same minimum cloud brightness at night
if (time_brightness < 0.5f)
cloud_direct_brightness = std::fmax(cloud_direct_brightness,
time_brightness * 1.3f);
}
} else {
cloud_direct_brightness = direct_brightness;

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