Enable shadow registration, improve indoor check

lib/influences.lua

@@ -55,13 +55,15 @@ end)
 
 climate_api.register_influence("daylight", function(pos)
 	pos = vector.add(pos, {x = 0, y = 1, z = 0})
-	return minetest.get_node_light(pos, 0.5) or 0
+	return minetest.get_natural_light(pos, 0.5) or 0
 end)
 
 climate_api.register_influence("indoors", function(pos)
 	pos = vector.add(pos, {x = 0, y = 1, z = 0})
-	local daylight = minetest.get_node_light(pos, 0.5) or 0
-	if daylight < 15 then return true end
+	local daylight = minetest.get_natural_light(pos, 0.5) or 0
+	-- max light is 15 but allow adjacent nodes to still be outdoors
+	-- to reduce effect switching on and off when walking underneath single nodes
+	if daylight < 14 then return true end
 
 	for i = 1, climate_mod.settings.ceiling_checks do
 		local lpos = vector.add(pos, {x = 0, y = i, z = 0})

lib/skybox_merger.lua

@@ -42,6 +42,10 @@ local default_sky = {
 		count = 1000,
 		star_color = "#ebebff69",
 		scale = 1
+	},
+	light_data = {
+		shadow_intensity = 0.33,
+		saturation = 1
 	}
 }
 
@@ -70,6 +74,12 @@ local function set_skybox(playername, sky)
 	player:set_moon(sky.moon_data)
 	player:set_sun(sky.sun_data)
 	player:set_stars(sky.star_data)
+	if player.set_lighting then
+		player:set_lighting({
+			shadows = { intensity = sky.light_data.shadow_intensity },
+			saturation = sky.light_data.saturation
+		})
+	end
 end
 
 function skybox.update(playername)