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diff --git a/LICENSE b/LICENSE
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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>
diff --git a/README b/README
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+Day/Night Mode Selector for Minetest
+====================================
+
+This is a mod for Minetest that adds a simple way to select "automatic" (normal) day/night cycling, always day, or always night. It works per-player, and settings are persistent across restarts.
+
+Usage (inventory button): Press the button in the inventory to open the menu, then select the desired mode. Use "automatic" to return to normal behavior.
+
+Usage (chat command): Use the /dayratio command by itself to open the menu, or specify a number from 0 to 1 after it to set a custom value. Custom values set the ratio between day and night - for example, a value of 0.25 will set your lighting to be 1/4 day and 3/4 night. The light level is then unaffected by the time of day. Use a value of "nil" to return to normal behavior.
+
+Dependencies: unified_inventory
+
+License: Unlicense, see the "LICENSE" file for full license text.
diff --git a/depends.txt b/depends.txt
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+unified_inventory
diff --git a/init.lua b/init.lua
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+local prefs = {}
+
+local path = minetest.get_worldpath()..DIR_DELIM.."daynight.txt"
+
+local file = io.open(path,"r")
+
+if file then
+	local data = file:read("*all")
+	prefs = minetest.deserialize(data)
+	file:close()
+end
+
+local function save()
+	local file = io.open(path,"w")
+	local data = minetest.serialize(prefs)
+	file:write(data)
+	file:close()
+end
+
+local form = "size[6,2.25]"..
+	"label[2,-0.25;Select a day/night mode:]"..
+	"image_button_exit[0,0.25;2,2;"..minetest.formspec_escape("[combine:128x128:16,16=ui_moon_icon.png:-16,-16=ui_sun_icon.png")..";normal;]"..
+	"image_button_exit[2,0.25;2,2;ui_sun_icon.png;day;]"..
+	"image_button_exit[4,0.25;2,2;ui_moon_icon.png;night;]"..
+	"label[0.5,2;Automatic]"..
+	"label[2.5,2;Always Day]"..
+	"label[4.5,2;Always Night]"
+
+minetest.register_chatcommand("dayratio",
+	{
+		params = "[ratio]",
+		description = "Sets your day/night ratio to the given value, or opens a GUI if a value is not given",
+		func = function(name,param)
+			if param ~= "" and param ~= "nil" then
+				if not tonumber(param) then
+					return false,minetest.colorize("#FF0000","ERROR")..": Invalid value. Valid range is 0-1 or nil."
+				elseif tonumber(param) > 1 then
+					return false,minetest.colorize("#FF0000","ERROR")..": Invalid value. Value must be nil or <= 1."
+				elseif tonumber(param) < 0 then
+					return false,minetest.colorize("#FF0000","ERROR")..": Invalid value. Only positive values are allowed."
+				end
+			end
+			local player = minetest.get_player_by_name(name)
+			if param == "nil" then
+				prefs[name] = nil
+				player:override_day_night_ratio(nil)
+				return true,minetest.colorize("#00FFFF","Success")..": Day/night ratio override cleared."
+			elseif tonumber(param) then
+				prefs[name] = tonumber(param)
+				player:override_day_night_ratio(tonumber(param))
+				return true,minetest.colorize("#00FFFF","Success")..": Day/night ratio set to "..param
+			else
+				minetest.show_formspec(name,"daynight:daynight",form)
+			end
+			save()
+		end
+	}
+)
+
+minetest.register_on_player_receive_fields(
+	function(player,formname,fields)
+		local name = player:get_player_name()
+		if formname ~= "daynight:daynight" then
+			return false
+		end
+		if fields.normal then
+			prefs[name] = nil
+			player:override_day_night_ratio(nil)
+		elseif fields.day then
+			prefs[name] = 1
+			player:override_day_night_ratio(1)
+		elseif fields.night then
+			prefs[name] = 0
+			player:override_day_night_ratio(0)
+		end
+		save()
+	end
+)
+
+minetest.register_on_joinplayer(
+	function(player)
+		local name = player:get_player_name()
+		player:override_day_night_ratio(prefs[name])
+	end
+)
+
+unified_inventory.register_button("daynight",
+	{
+		action = function(player)
+			minetest.show_formspec(player:get_player_name(),"daynight:daynight",form)
+		end,
+		tooltip = "Day/Night Options",
+		type = "image",
+		image = "[combine:128x128:16,16=ui_moon_icon.png:-16,-16=ui_sun_icon.png"
+	}
+)