Weather refactor.

code/__defines/planets.dm

@@ -10,5 +10,16 @@
 #define WEATHER_HOT					"hot"
 #define WEATHER_BLOOD_MOON			"blood moon" // For admin fun or cult later on.
 
+#define MOON_PHASE_NEW_MOON			"new moon"
+#define MOON_PHASE_WAXING_CRESCENT	"waxing crescent"
+#define MOON_PHASE_FIRST_QUARTER	"first quarter"
+#define MOON_PHASE_WAXING_GIBBOUS	"waxing gibbous"
+#define MOON_PHASE_FULL_MOON		"full moon" // ware-shantaks sold seperately.
+#define MOON_PHASE_WANING_GIBBOUS	"waning gibbous"
+#define MOON_PHASE_LAST_QUARTER		"last quarter"
+#define MOON_PHASE_WANING_CRESCENT	"waning crescent"
+
 #define PLANET_PROCESS_SUN		0x1
-#define PLANET_PROCESS_TEMP		0x2
+#define PLANET_PROCESS_TEMP		0x2
+
+#define PLANET_TIME_MODIFIER		1 // If you want planet time to go faster than realtime, increase this number.

code/game/objects/items/devices/communicator/UI.dm

@@ -77,7 +77,9 @@
 				"Weather" = planet.weather_holder.current_weather.name,
 				"Temperature" = planet.weather_holder.temperature - T0C,
 				"High" = planet.weather_holder.current_weather.temp_high - T0C,
-				"Low" = planet.weather_holder.current_weather.temp_low - T0C)
+				"Low" = planet.weather_holder.current_weather.temp_low - T0C,
+				"Forecast" = english_list(planet.weather_holder.forecast, and_text = "→", comma_text = "→", final_comma_text = "→") // Unicode RIGHTWARDS ARROW.
+				)
 			weather[++weather.len] = W
 
 	injection = "<div>Test</div>"

code/modules/admin/verbs/debug.dm

@@ -641,6 +641,7 @@
 	var/datum/weather/new_weather = input(usr, "What weather do you want to change to?", "Change Weather") as null|anything in planet.weather_holder.allowed_weather_types
 	if(new_weather)
 		planet.weather_holder.change_weather(new_weather)
+		planet.weather_holder.rebuild_forecast()
 		var/log = "[key_name(src)] changed [planet.name]'s weather to [new_weather]."
 		message_admins(log)
 		log_admin(log)

code/modules/flufftext/look_up.dm

@@ -0,0 +1,60 @@
+// Implements a verb to make your character look upward, mostly intended for the surface.
+
+/mob/living/verb/look_up()
+	set name = "Look Up"
+	set category = "IC"
+	set desc = "Look above you, and hope there's no ceiling spiders."
+
+	to_chat(usr, "You look upwards...")
+
+	var/turf/T = get_turf(usr)
+	if(!T) // In null space.
+		to_chat(usr, span("warning", "You appear to be in a place without any sort of concept of direction. You have bigger problems to worry about."))
+		return
+
+	if(!T.outdoors) // They're inside.
+		to_chat(usr, "You see nothing interesting.")
+		return
+
+	else // They're outside and hopefully on a planet.
+		var/datum/planet/P = SSplanets.z_to_planet[T.z]
+		if(!P)
+			to_chat(usr, span("warning", "You appear to be outside, but not on a planet... Something is wrong."))
+			return
+
+		var/datum/weather_holder/WH = P.weather_holder
+
+		// Describe the current weather.
+		if(WH.current_weather.observed_message)
+			to_chat(usr, WH.current_weather.observed_message)
+
+		// If we can see the sky, we'll see things like sun position, phase of the moon, etc.
+		if(!WH.current_weather.sky_visible)
+			to_chat(usr, "You can't see the sky clearly due to the [WH.current_weather.name].")
+		else
+			// Sun-related output.
+			if(P.sun_name)
+				var/afternoon = P.current_time.seconds_stored > (P.current_time.seconds_in_day / 2)
+
+				var/sun_message = null
+				switch(P.sun_position)
+					if(0 to 0.4) // Night
+						sun_message = "It is night time, [P.sun_name] is not visible."
+					if(0.4 to 0.5) // Twilight
+						sun_message = "The sky is in twilight, however [P.sun_name] is not visible."
+					if(0.5 to 0.7) // Sunrise/set.
+						sun_message = "[P.sun_name] is slowly [!afternoon ? "rising from" : "setting on"] the horizon."
+					if(0.7 to 0.9) // Morning/evening
+						sun_message = "[P.sun_name]'s position implies it is currently [!afternoon ? "early" : "late"] in the day."
+					if(0.9 to 1.0) // Noon
+						sun_message = "It's high noon. [P.sun_name] hangs directly above you."
+
+				to_chat(usr, sun_message)
+
+			// Now for the moon.
+			if(P.moon_name)
+				if(P.moon_phase == MOON_PHASE_NEW_MOON)
+					to_chat(usr, "[P.moon_name] is not visible. It must be a new moon.")
+				else
+					to_chat(usr, "[P.moon_name] appears to currently be a [P.moon_phase].")
+

code/modules/planet/planet.dm

@@ -21,19 +21,34 @@
 	var/list/turf/simulated/floor/planet_floors = list()
 	var/list/turf/unsimulated/wall/planetary/planet_walls = list()
 
-
 	var/needs_work = 0 // Bitflags to signal to the planet controller these need (properly deferrable) work. Flags defined in controller.
 
+	var/sun_name = "the sun" // For flavor.
+
+	var/moon_name = null // Purely for flavor. Null means no moon exists.
+	var/moon_phase = null // Set if above is defined.
+
 /datum/planet/New()
 	..()
 	weather_holder = new(src)
 	current_time = current_time.make_random_time()
+	if(moon_name)
+		moon_phase = pick(list(
+			MOON_PHASE_NEW_MOON,
+			MOON_PHASE_WAXING_CRESCENT,
+			MOON_PHASE_FIRST_QUARTER,
+			MOON_PHASE_WAXING_GIBBOUS,
+			MOON_PHASE_FULL_MOON,
+			MOON_PHASE_WANING_GIBBOUS,
+			MOON_PHASE_LAST_QUARTER,
+			MOON_PHASE_WANING_CRESCENT
+			))
 	update_sun()
 
 /datum/planet/proc/process(last_fire)
 	if(current_time)
 		var/difference = world.time - last_fire
-		current_time = current_time.add_seconds(difference SECONDS)
+		current_time = current_time.add_seconds((difference / 10) * PLANET_TIME_MODIFIER)
 	update_weather() // We update this first, because some weather types decease the brightness of the sun.
 	if(sun_last_process <= world.time - sun_process_interval)
 		update_sun()

code/modules/planet/sif.dm

@@ -12,6 +12,9 @@ var/datum/planet/sif/planet_sif = null
 //	expected_z_levels = list(1) // To be changed when real map is finished.
 	planetary_wall_type = /turf/unsimulated/wall/planetary/sif
 
+	sun_name = "Vir"
+	moon_name = "Thor"
+
 /datum/planet/sif/New()
 	..()
 	planet_sif = src
@@ -131,7 +134,7 @@ var/datum/planet/sif/planet_sif = null
 		WEATHER_HAIL		= 2.5
 		)
 
-datum/weather/sif
+/datum/weather/sif
 	name = "sif base"
 	temp_high = 283.15	// 10c
 	temp_low = 263.15	// -10c
@@ -142,6 +145,13 @@ datum/weather/sif
 		WEATHER_CLEAR = 60,
 		WEATHER_OVERCAST = 40
 		)
+	transition_messages = list(
+		"The sky clears up.",
+		"The sky is visible.",
+		"The weather is calm."
+		)
+	sky_visible = TRUE
+	observed_message = "The sky is clear."
 
 /datum/weather/sif/overcast
 	name = "overcast"
@@ -154,6 +164,12 @@ datum/weather/sif
 		WEATHER_RAIN = 5,
 		WEATHER_HAIL = 5
 		)
+	observed_message = "It is overcast, all you can see are clouds."
+	transition_messages = list(
+		"All you can see above are clouds.",
+		"Clouds cut off your view of the sky.",
+		"It's very cloudy."
+		)
 
 /datum/weather/sif/light_snow
 	name = "light snow"
@@ -167,6 +183,11 @@ datum/weather/sif
 		WEATHER_SNOW = 25,
 		WEATHER_HAIL = 5
 		)
+	observed_message = "It is snowing lightly."
+	transition_messages = list(
+		"Small snowflakes begin to fall from above.",
+		"It begins to snow lightly.",
+		)
 
 /datum/weather/sif/snow
 	name = "moderate snow"
@@ -182,6 +203,11 @@ datum/weather/sif
 		WEATHER_HAIL = 5,
 		WEATHER_OVERCAST = 5
 		)
+	observed_message = "It is snowing."
+	transition_messages = list(
+		"It's starting to snow.",
+		"The air feels much colder as snowflakes fall from above."
+	)
 
 /datum/weather/sif/snow/process_effects()
 	..()
@@ -206,6 +232,11 @@ datum/weather/sif
 		WEATHER_HAIL = 10,
 		WEATHER_OVERCAST = 5
 		)
+	observed_message = "A blizzard blows snow everywhere."
+	transition_messages = list(
+		"Strong winds howl around you as a blizzard appears.",
+		"It starts snowing heavily, and it feels extremly cold now."
+	)
 
 /datum/weather/sif/blizzard/process_effects()
 	..()
@@ -230,6 +261,10 @@ datum/weather/sif
 		WEATHER_STORM = 10,
 		WEATHER_HAIL = 5
 		)
+	observed_message = "It is raining."
+	transition_messages = list(
+		"The sky is dark, and rain falls down upon you."
+	)
 
 /datum/weather/sif/rain/process_effects()
 	..()
@@ -267,6 +302,12 @@ datum/weather/sif
 	var/next_lightning_strike = 0 // world.time when lightning will strike.
 	var/min_lightning_cooldown = 5 SECONDS
 	var/max_lightning_cooldown = 1 MINUTE
+	observed_message = "An intense storm pours down over the region."
+	transition_messages = list(
+		"You feel intense winds hit you as the weather takes a turn for the worst.",
+		"Loud thunder is heard in the distance.",
+		"A bright flash heralds the approach of a storm."
+	)
 
 
 	transition_chances = list(
@@ -329,6 +370,12 @@ datum/weather/sif
 		WEATHER_HAIL = 10,
 		WEATHER_OVERCAST = 5
 		)
+	observed_message = "Ice is falling from the sky."
+	transition_messages = list(
+		"Ice begins to fall from the sky.",
+		"It begins to hail.",
+		"An intense chill is felt, and chunks of ice start to fall from the sky, towards you."
+	)
 
 /datum/weather/sif/hail/process_effects()
 	..()
@@ -375,3 +422,7 @@ datum/weather/sif
 	transition_chances = list(
 		WEATHER_BLOODMOON = 100
 		)
+	observed_message = "Everything is red. Something really wrong is going on."
+	transition_messages = list(
+		"The sky turns blood red!"
+	)

code/modules/planet/weather.dm

@@ -1,12 +1,13 @@
 /datum/weather_holder
-	var/datum/planet/our_planet = null
-	var/datum/weather/current_weather = null
-	var/temperature = T20C
-	var/wind_dir = 0
-	var/wind_speed = 0
-	var/list/allowed_weather_types = list()
-	var/list/roundstart_weather_chances = list()
-	var/next_weather_shift = null
+	var/datum/planet/our_planet = null // Reference to the planet datum that holds this datum.
+	var/datum/weather/current_weather = null // The current weather that is affecting the planet.
+	var/temperature = T20C // The temperature to set planetary walls to.
+	var/wind_dir = 0 // Not implemented.
+	var/wind_speed = 0 // Not implemented.
+	var/list/allowed_weather_types = list() // Assoc list of weather identifiers, containing the actual weather datum.
+	var/list/roundstart_weather_chances = list() // Assoc list of weather identifiers and their odds of being picked to happen at roundstart.
+	var/next_weather_shift = null // world.time when the weather subsystem will advance the forecast.
+	var/list/forecast = list() // A list of what the weather will be in the future. This allows it to be pre-determined and planned around.
 
 	// Holds the weather icon, using vis_contents. Documentation says an /atom/movable is required for placing inside another atom's vis_contents.
 	var/atom/movable/weather_visuals/visuals = null
@@ -24,28 +25,75 @@
 
 /datum/weather_holder/proc/change_weather(var/new_weather)
 	var/old_light_modifier = null
+	var/old_weather = null
 	if(current_weather)
 		old_light_modifier = current_weather.light_modifier // We store the old one, so we can determine if recalculating the sun is needed.
+		old_weather = current_weather
 	current_weather = allowed_weather_types[new_weather]
 	next_weather_shift = world.time + rand(current_weather.timer_low_bound, current_weather.timer_high_bound) MINUTES
+	if(new_weather != old_weather)
+		show_transition_message()
 
 	update_icon_effects()
 	update_temperature()
 	if(old_light_modifier && current_weather.light_modifier != old_light_modifier) // Updating the sun should be done sparingly.
 		our_planet.update_sun()
-	message_admins("[our_planet.name]'s weather is now [new_weather], with a temperature of [temperature]°K ([temperature - T0C]°C | [temperature * 1.8 - 459.67]°F).")
+	log_debug("[our_planet.name]'s weather is now [new_weather], with a temperature of [temperature]°K ([temperature - T0C]°C | [temperature * 1.8 - 459.67]°F).")
 
 /datum/weather_holder/proc/process()
 	if(world.time >= next_weather_shift)
-		var/new_weather
-		if(!current_weather)
-			new_weather = pickweight(roundstart_weather_chances)
+		if(!current_weather) // Roundstart (hopefully).
+			initialize_weather()
 		else
-			new_weather = pickweight(current_weather.transition_chances)
-		change_weather(new_weather)
+			advance_forecast()
 	else
 		current_weather.process_effects()
 
+
+
+// Should only have to be called once.
+/datum/weather_holder/proc/initialize_weather()
+	if(!current_weather)
+		change_weather(get_next_weather())
+		build_forecast()
+
+// Used to determine what the weather will be soon, in a semi-random fashion.
+// The forecast is made by calling this repeatively, from the bottom (highest index) of the forecast list.
+/datum/weather_holder/proc/get_next_weather(var/datum/weather/W)
+	if(!current_weather) // At roundstart, choose a suitable initial weather.
+		return pickweight(roundstart_weather_chances)
+	return pickweight(W.transition_chances)
+
+/datum/weather_holder/proc/advance_forecast()
+	var/new_weather = forecast[1]
+	forecast.Cut(1, 2) // Remove what we just took out, shortening the list.
+	change_weather(new_weather)
+	build_forecast() // To fill the forecast to the desired length.
+
+// Creates a list of future weather shifts, that the planet will undergo at some point in the future.
+// Determining it ahead of time allows for attentive players to plan further ahead, if they can see the forecast.
+/datum/weather_holder/proc/build_forecast()
+	var/desired_length = 3
+	if(forecast.len >= desired_length)
+		return
+
+	while(forecast.len < desired_length)
+		if(!forecast.len) // If the forecast is empty, the current_weather is used as a base instead.
+			forecast += get_next_weather(current_weather)
+		else
+			var/position = forecast[forecast.len] // Go to the bottom of the list.
+			var/datum/weather/W = allowed_weather_types[position] // Get the actual datum and not a string.
+			var/new_weather = get_next_weather(W) // Get a suitable weather pattern to shift to from this one.
+			forecast += new_weather
+	log_debug("[our_planet.name]'s weather forecast is now '[english_list(forecast, and_text = " then ", final_comma_text = ", ")]'.")
+
+// Wipes the forecast and regenerates it. Used for when the weather is forcefully changed, such as with admin verbs.
+/datum/weather_holder/proc/rebuild_forecast()
+	forecast.Cut()
+	build_forecast()
+
+
+
 /datum/weather_holder/proc/update_icon_effects()
 	visuals.icon_state = current_weather.icon_state
 
@@ -57,25 +105,41 @@
 	return allowed_weather_types[desired_type]
 
 
+/datum/weather_holder/proc/show_transition_message()
+	if(!current_weather.transition_messages.len)
+		return
+
+	var/message = pick(current_weather.transition_messages) // So everyone gets the same message.
+	for(var/mob/M in player_list) // Don't need to care about clientless mobs.
+		if(M.z in our_planet.expected_z_levels)
+			var/turf/T = get_turf(M)
+			if(!T.outdoors)
+				continue
+			to_chat(M, message)
+
 /datum/weather
 	var/name = "weather base"
 	var/icon = 'icons/effects/weather.dmi'
 	var/icon_state = null // Icon to apply to turf undergoing weather.
-	var/temp_high = T20C
-	var/temp_low = T0C
+	var/temp_high = T20C // Temperature to apply when at noon.
+	var/temp_low = T0C // Temperature to apply when at midnight.
 	var/light_modifier = 1.0 // Lower numbers means more darkness.
 	var/light_color = null // If set, changes how the day/night light looks.
-	var/flight_failure_modifier = 0 // Some types of weather make flying harder, and therefore make crashes more likely.
-	var/transition_chances = list() // Assoc list
-	var/datum/weather_holder/holder = null
+	var/flight_failure_modifier = 0 // Some types of weather make flying harder, and therefore make crashes more likely. (This is not implemented)
+	var/transition_chances = list() // Assoc list of weather identifiers and the odds to shift to a specific type of weather. Can contain its own identifier to prolong it.
+	var/datum/weather_holder/holder = null // Reference to the datum that manages the planet's weather.
 	var/timer_low_bound = 5			// How long this weather must run before it tries to change, in minutes
 	var/timer_high_bound = 10		// How long this weather can run before it tries to change, in minutes
+	var/sky_visible = FALSE			// If the sky can be clearly seen while this is occuring, used for flavor text when looking up.
 
 	var/effect_message = null		// Should be a string, this is what is shown to a mob caught in the weather
 	var/last_message = 0			// Keeps track of when the weather last tells EVERY player it's hitting them
 	var/message_delay = 10 SECONDS	// Delay in between weather hit messages
 	var/show_message = FALSE		// Is set to TRUE and plays the messsage every [message_delay]
 
+	var/list/transition_messages = list()// List of messages shown to all outdoor mobs when this weather is transitioned to, for flavor. Not shown if already this weather.
+	var/observed_message = null // What is shown to a player 'examining' the weather.
+
 /datum/weather/proc/process_effects()
 	show_message = FALSE	// Need to reset the show_message var, just in case
 	if(effect_message)	// Only bother with the code below if we actually need to display something

nano/templates/communicator.tmpl

@@ -254,7 +254,8 @@ Used In File(s): code\game\objects\items\devices\communicator\communicator.dm
 			<div class="itemContent">
 				Time: {{:value.Time}}<BR>
 				Weather: {{:value.Weather}}, {{:helper.fixed(value.Temperature)}}&deg;C<BR>
-				High: {{:helper.fixed(value.High)}}&deg;C	| 	Low: {{:helper.fixed(value.Low)}}&deg;C
+				High: {{:helper.fixed(value.High)}}&deg;C	| 	Low: {{:helper.fixed(value.Low)}}&deg;C<BR>
+				Forecast: {{:helper.Forecast}}
 			</div>
 		</div>
 	{{empty}}

polaris.dme

@@ -1540,6 +1540,7 @@
 #include "code\modules\ext_scripts\python.dm"
 #include "code\modules\flufftext\Dreaming.dm"
 #include "code\modules\flufftext\Hallucination.dm"
+#include "code\modules\flufftext\look_up.dm"
 #include "code\modules\flufftext\TextFilters.dm"
 #include "code\modules\food\recipe_dump.dm"
 #include "code\modules\food\recipes_microwave.dm"