Fix bad mod.conf

README.md

@@ -6,14 +6,20 @@ Make sure you have the latest version installed or [update your game](https://ww
 
 ## Dependencies
 This mod has no hard dependencies whatsoever, so you can use it as you will.
-However, I do recommend using the [skylayer](https://gitlab.com/rautars/skylayer) mod.
-With the Minetest's new sky API it is likely for more mods to change the sky configuration,
-possibly resulting in conflict. This utility mod can help circumvent these issues if both mods use it.
+If you are also using *climate_api* then it will use the included skybox registration instead of overriding the player configuration. Thus, moon_phases will will be compatible with your weather packs.
+
+## Changes in v2.0
+- New classic moon textures!
+- Skybox changes. The sky will brighten up during a full moon and turn dark during a new moon.
+- Less stored data: Moon cycle now used Minetest's ``get_day_count()`` and only stores a date offset when changed via commands.
+- Climate API integration. Use moon phases with your favorite weather mod
 
 ## Commands
 This mod comes with two commands to print or change the current moon phase.
 - Use ``/moonphase`` to view the currently active phase.
 - Use ``/set_moonphase <phase>`` to change it. ``<phase>`` has to be a full number between 1 and 8.
+- Use ``/set_moonstyle <style>`` to choose a texture preset. ``classic`` will result in a quadratic moon
+	inspired by default Minetest. ``realistic`` will result in 256x images of the real moon.
 
 In order to change the phase, you will need the corresponding privilege.
 Use ``/grant <player> moonphase`` to grant it.
@@ -22,17 +28,23 @@ Use ``/grant <player> moonphase`` to grant it.
 Just like the chat commands, this mod provides a LUA api for accessing the moon phase.
 It contains a method called ``moon_phases.get_phase()`` that will return a numeric value representing the current moon phase.
 You can also set the phase via ``moon_phases.set_phase(phase)`` where ``phase`` is an integer between 1 and 8.
+The texture style of a specific player can be set with ``moon_phases.set_style(player, style)`` where ``style`` referes to either
+``classic`` or ``realistic``.
 
 ## Configuration
 The mod provides the option to change the length of the moon cycle.
 By default, the moon texture will change every four (in-game) nights.
 This results in a total cycle of 32 days.
 
+You can also set the default texture style for all players. You can choose between the same options as with the ``/set_moonstyle`` command.
+
 ## LICENSE
-All source code is licensed under GNU LESSER GENERAL PUBLIC LICENSE version 3.
+All source code is written by me and licensed under GNU LESSER GENERAL PUBLIC LICENSE version 3.
 You can find a copy of that license in the repository.
 
 ## Media
-All included moon textures are resized versions of graphics from *NASA's Scientific Visualization Studio* by [Ernie Wright](https://svs.gsfc.nasa.gov/cgi-bin/search.cgi?person=1059).
-These images are part of the Public Domain as CC-BY-SA 3.0.
+All moon textures marked as "classic" are made by Cap for this mod and usable under a *CC BY-SA (3.0)* license.
+
+All included "realistic" moon textures are resized versions of graphics from *NASA's Scientific Visualization Studio* by [Ernie Wright](https://svs.gsfc.nasa.gov/cgi-bin/search.cgi?person=1059).
+These images are part of the Public Domain as *CC BY-SA 3.0*.
 You can access the entire (high resolution) album on [their website](https://svs.gsfc.nasa.gov/4769#28564). See [NASA's media guidelines](https://www.nasa.gov/multimedia/guidelines/index.html) for more information on licensing.

commands.lua

@@ -15,7 +15,7 @@ minetest.register_chatcommand("moonphase", {
 minetest.register_chatcommand("set_moonphase", {
 	params = "<phase>",
 	description = "Set moon phase to given value",
-	privs = {moonphase = true},
+	privs = { moonphase = true },
 	func = function(playername, param)
 		if param == nil or param == "" then
 			minetest.chat_send_player(playername, "Provide a number between 1 and 8")
@@ -28,4 +28,22 @@ minetest.register_chatcommand("set_moonphase", {
 			end
 		end
 	end
+})
+
+minetest.register_chatcommand("set_moonstyle", {
+	params = "<style>",
+	description = "Set your moon's texture style to the given preset",
+	func = function(playername, param)
+		if param == nil or param == "" then
+			minetest.chat_send_player(playername, "Provide a texture style. Possible styles are classic or realistic")
+		else
+			local player = minetest.get_player_by_name(playername)
+			local change = moon_phases.set_style(player, param)
+			if change then
+				minetest.chat_send_player(playername, "Moon texture changed successfully")
+			else
+				minetest.chat_send_player(playername, "Invalid argument. Provide a valid preset.")
+			end
+		end
+	end
 })

datastorage.lua

@@ -1,48 +0,0 @@
-local mod_datastorage = minetest.get_modpath("datastorage") ~= nil
-
-local default_state = {
-	change_time = true,
-	day = 1,
-	phase = 1
-}
-
-local function use_datastorage()
-	local state = datastorage.get("moon_phases", "moon_state")
-	for key, val in pairs(default_state) do
-		if type(state[key]) == "nil" then
-			state[key] = val
-		end
-	end
-	return state
-end
-
-local storage
-local function use_filesystem()
-	local file_name = minetest.get_worldpath() .. "/moon_phases"
-	minetest.register_on_shutdown(function()
-		local file = io.open(file_name, "w")
-		file:write(minetest.serialize(storage))
-		file:close()
-	end)
-
-	local file = io.open(file_name, "r")
-	if file ~= nil then
-		storage = minetest.deserialize(file:read("*a"))
-		file:close()
-		if type(storage) == "table" then
-			return storage
-		end
-	end
-	storage = default_state
-	return storage
-end
-
-local function get_storage()
-	if mod_datastorage then
-		return use_datastorage()
-	else
-		return use_filesystem()
-	end
-end
-
-return get_storage

depends.txt

@@ -1,2 +0,0 @@
-skylayer?
-datastorage?

description.txt

@@ -1,3 +0,0 @@
-Changes the moon to follow a cycle between eight different phases.
-Expect the sky to change every four nights (or configure a custom schedule).
-Requires at least Minetest 5.2.0

init.lua

@@ -1,77 +1,141 @@
+local mod_climate_api = minetest.get_modpath("climate_api") ~= nil
 local mod_skylayer = minetest.get_modpath("skylayer") ~= nil
 
 local modpath = minetest.get_modpath("moon_phases");
-local state = dofile(modpath .. "/datastorage.lua")()
 
-local GSCYCLE = 0.5
+local GSCYCLE = 0.5								-- global step cycle in seconds
+local DEFAULT_LENGTH = 4					-- default moon cycle length in days
+local DEFAULT_STYLE = "classic"		-- default texture style
+local PHASE_COUNT = 8							-- number of phases to go through
+
+-- retrieve mod configuration
+local PHASE_LENGTH = tonumber(minetest.settings:get("moon_phases_cycle") or DEFAULT_LENGTH)
+local TEXTURE_STYLE = minetest.settings:get("moon_phases_style") or DEFAULT_STYLE
+
+local sky_color = {
+	"#1d293aff",
+	"#1c4b8dff",
+	nil,
+	"#579dffff",
+	nil,
+	"#1c4b8dff",
+	"#1d293aff",
+	"#000000ff"
+}
+
+local horizon_color = {
+	"#243347ff",
+	"#235fb3ff",
+	nil,
+	"#73aeffff",
+	nil,
+	"#3079dfff",
+	"#173154ff",
+	"#000000ff"
+}
+
 moon_phases = {}
+local phase = 1
+local state = minetest.get_mod_storage()
 
-local function get_cycle_config()
-	local DEFAULT_LENGTH = 4
-	local config = minetest.settings:get("moon_phases_cycle") or DEFAULT_LENGTH
-	config = math.floor(tonumber(config))
-	if (not config) or config < 0 then
-		minetest.log("warning", "[Moon Phases] Invalid cycle configuration")
-		return DEFAULT_LENGTH
-	end
-	return config
-end
-
-local PHASE_LENGTH = get_cycle_config()
-
-local function set_texture(player, texture)
-	local sl = {}
-	sl.name = "moon_phases:custom"
-	sl.moon_data = {
-		visible = true,
-		texture = texture
-	}
-	if mod_skylayer then
-		skylayer.add_layer(player:get_player_name(), sl)
-	else
-		player:set_moon(sl.moon_data)
-	end
-end
-
-local function update_textures()
-	for _, player in ipairs(minetest.get_connected_players()) do
-		set_texture(player, "moon_" .. state.phase .. ".png")
-	end
-end
-
-local function handle_time_progression()
+-- calculate current moon phase from date
+-- and stored date offset
+local function calculate_phase()
 	local time = minetest.get_timeofday()
-	if time >= 0.5 and state.change_time then
-		state.day = state.day + 1
-		if state.day % PHASE_LENGTH == 0 then
-			state.phase = (state.phase % 8) + 1
-			state.change_time = false
-			update_textures()
-		end
-	elseif time < 0.5 and not state.change_time then
-		state.change_time = true
+	local day = minetest.get_day_count() + state:get_int("date_offset")
+	if time > 0.5 then
+		day = day + 1
+	end
+	return ((math.ceil(day / PHASE_LENGTH) - 1) % PHASE_COUNT) + 1
+end
+
+-- return the current moon phase
+function moon_phases.get_phase()
+	return phase
+end
+
+-- set the moon texture of a player to the given phase
+local function set_texture(player, phase)
+	if not player.get_stars then return end -- check for new sky API
+	local meta_data = player:get_meta()
+	local style = meta_data:get_string("moon_phases:texture_style")
+	if style ~= "classic" and style ~= "realistic" then
+		style = TEXTURE_STYLE
+	end
+	local texture = "moon_" .. phase .. "_" .. style .. ".png"
+	local name = "moon_phases:cycle"
+	local sky = {}
+	sky.sky_data = {
+		type = "regular",
+		sky_color = {
+			night_sky = sky_color[phase],
+			night_horizon = horizon_color[phase]
+		}
+	}
+	sky.moon_data = {
+		visible = true,
+		texture = texture,
+		scale = 0.8
+	}
+	local playername = player:get_player_name()
+	if mod_climate_api then
+		sky.priority = 0
+		climate_api.skybox.add(playername, name, sky)
+	elseif mod_skylayer then
+		sky.name = name
+		skylayer.add_layer(playername, sky)
+	else
+		player:set_sky(sky.sky_data)
+		player:set_moon(sky.moon_data)
 	end
 end
 
-function moon_phases.get_phase()
-	return state.phase
+-- check for day changes
+local function handle_time_progression()
+	local n_phase = calculate_phase()
+	if n_phase ~= phase then
+		phase = n_phase
+		for _, player in ipairs(minetest.get_connected_players()) do
+			set_texture(player, phase)
+		end
+	end
 end
 
-function moon_phases.set_phase(phase)
-	phase = math.floor(tonumber(phase))
-	if (not phase) or phase < 0 or phase > 8 then
+-- set the current moon phase
+-- @param phase int Phase between 1 and PHASE_COUNT
+function moon_phases.set_phase(nphase)
+	nphase = math.floor(tonumber(nphase))
+	if (not nphase) or nphase < 1 or nphase > PHASE_COUNT then
 		return false
 	end
-	state.phase = phase
-	update_textures()
+	local day = minetest.get_day_count()
+	local date_offset = state:get_int("date_offset")
+	local progress = (day + date_offset) % PHASE_LENGTH
+	local phase_offset = (nphase - phase + PHASE_COUNT) % PHASE_COUNT
+	local add_offset = ((phase_offset * PHASE_LENGTH) + date_offset - progress)
+	state:set_int("date_offset", add_offset)
+	handle_time_progression()
 	return true
 end
 
+-- set the moon's texture style for the given player
+function moon_phases.set_style(player, style)
+	if style ~= nil and style ~= "classic" and style ~= "realistic" then
+		return false
+	end
+	local meta_data = player:get_meta()
+	meta_data:set_string("moon_phases:texture_style", style)
+	set_texture(player, state:get_int("phase"))
+	return true
+end
+
+-- set the moon texture of newly joined player
 minetest.register_on_joinplayer(function(player)
-	set_texture(player, "moon_" .. state.phase .. ".png")
+	set_texture(player, phase)
 end)
 
-local timer = 0
+-- check for day changes and call handlers
+local timer = math.huge
 minetest.register_globalstep(function(dtime)
 	timer = timer + dtime
 	if timer < GSCYCLE then return end
@@ -79,4 +143,10 @@ minetest.register_globalstep(function(dtime)
 	timer = 0
 end)
 
-dofile(modpath .. "/commands.lua")
+-- make moon phase available to weather effects
+if mod_climate_api then
+	climate_api.register_global_influence("moonphase", moon_phases.get_phase)
+end
+
+-- include API for chat commands
+dofile(modpath .. "/commands.lua")

mod.conf

@@ -1,4 +1,12 @@
 name = moon_phases
 title = Moon Phases
 author = TestificateMods
-release = 1
+description = """
+Changes the moon to follow a cycle between eight different phases.
+Expect the sky to change every four nights (or configure a custom schedule).
+Includes realistic 256x256px moon textures from NASA photographies as well as
+square vanilla themed 16x16px textures
+
+Requires at least Minetest 5.2.0
+"""
+optional_depends = climate_api, skylayer

settingtypes.txt

@@ -1 +1,6 @@
-moon_phases_cycle (Change moon phase every X days) int 4
+# The moon will switch to the next phase every X days.
+moon_phases_cycle (Change moon phase every X days) int 4
+
+# Use classic for a default-inspired set of textures.
+# Use realistic for a set of down-scaled NASA photography.
+moon_phases_style (Choose a default texture style) enum classic classic,realistic