Add setting to disable direction dependent fog and sky colors

minetest.conf.example

@@ -22,7 +22,6 @@
 # Client and server
 #
 
-
 # Name of player; on a server this is the main admin
 #name =
 
@@ -190,6 +189,8 @@
 # The time in seconds it takes between repeated
 # right clicks when holding the right mouse button
 #repeat_rightclick_time = 0.25
+# Make fog and sky colors depend on daytime (dawn/sunset) and view direction
+#directional_colored_fog = true
 
 # Default timeout for cURL, in milliseconds
 # Only has an effect if compiled with cURL

src/defaultsettings.cpp

@@ -59,6 +59,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("aux1_descends", "false");
 	settings->setDefault("doubletap_jump", "false");
 	settings->setDefault("always_fly_fast", "true");
+	settings->setDefault("directional_colored_fog", "true");
 
 	// Some (temporary) keys for debugging
 	settings->setDefault("keymap_print_debug_stacks", "KEY_KEY_P");

src/sky.cpp

@@ -9,6 +9,7 @@
 #include "profiler.h"
 #include "util/numeric.h" // MYMIN
 #include <cmath>
+#include "settings.h"
 
 //! constructor
 Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id, LocalPlayer* player):
@@ -56,6 +57,8 @@ Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id, LocalPlay
 		);
 		m_stars[i].normalize();
 	}
+
+	m_directional_colored_fog = g_settings->getBool("directional_colored_fog");
 }
 
 void Sky::OnRegisterSceneNode()
@@ -482,6 +485,7 @@ void Sky::update(float time_of_day, float time_brightness,
 
 	// Horizon coloring based on sun and moon direction during sunset and sunrise
 	video::SColor pointcolor = video::SColor(255, 255, 255, m_bgcolor.getAlpha());
+	if (m_directional_colored_fog) {
 		if (m_horizon_blend() != 0)
 		{
 			// calculate hemisphere value from yaw
@@ -509,6 +513,7 @@ void Sky::update(float time_of_day, float time_brightness,
 			// calculate the blend color
 			pointcolor = m_mix_scolor(pointcolor_moon, pointcolor_sun, pointcolor_blend);
 		}
+	}
 
 	video::SColor bgcolor_bright = m_bgcolor_bright_f.toSColor();
 	m_bgcolor = video::SColor(
@@ -516,7 +521,9 @@ void Sky::update(float time_of_day, float time_brightness,
 		bgcolor_bright.getRed() * m_brightness,
 		bgcolor_bright.getGreen() * m_brightness,
 		bgcolor_bright.getBlue() * m_brightness);
+	if (m_directional_colored_fog) {
 		m_bgcolor = m_mix_scolor(m_bgcolor, pointcolor, m_horizon_blend() * 0.5);
+	}
 
 	video::SColor skycolor_bright = m_skycolor_bright_f.toSColor();
 	m_skycolor = video::SColor(
@@ -524,11 +531,20 @@ void Sky::update(float time_of_day, float time_brightness,
 		skycolor_bright.getRed() * m_brightness,
 		skycolor_bright.getGreen() * m_brightness,
 		skycolor_bright.getBlue() * m_brightness);
+	if (m_directional_colored_fog) {
 		m_skycolor = m_mix_scolor(m_skycolor, pointcolor, m_horizon_blend() * 0.25);
+	}
 
 	float cloud_direct_brightness = 0;
 	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;
+		}
+		else {
 			cloud_direct_brightness = MYMIN(m_horizon_blend() * 0.15 + m_time_brightness, 1);
+		}
 	} else {
 		cloud_direct_brightness = direct_brightness;
 	}
@@ -539,7 +555,9 @@ void Sky::update(float time_of_day, float time_brightness,
 			m_cloudcolor_bright_f.g * m_cloud_brightness,
 			m_cloudcolor_bright_f.b * m_cloud_brightness,
 			1.0);
+	if (m_directional_colored_fog) {
 		m_cloudcolor_f = m_mix_scolorf(m_cloudcolor_f, video::SColorf(pointcolor), m_horizon_blend() * 0.75);
+	}
 
 }
 

src/sky.h

@@ -105,6 +105,7 @@ private:
 	float m_brightness;
 	float m_cloud_brightness;
 	bool m_clouds_visible;
+	bool m_directional_colored_fog;
 	video::SColorf m_bgcolor_bright_f;
 	video::SColorf m_skycolor_bright_f;
 	video::SColorf m_cloudcolor_bright_f;