Ports the weather system from Nebula. (#18706)

* part 1

* compiles?

* IT WORKS

* vis contents

* fixes

* umbrelloid

* umbrella 2

* dsasdd

* stuff

* lmao

---------

Co-authored-by: Matt Atlas <liermattia@gmail.com>

code/modules/mob/living/carbon/alien/diona/life.dm

@@ -1,6 +1,7 @@
 //Dionaea regenerate health and nutrition in light.
 
 /mob/living/carbon/alien/diona/handle_environment(datum/gas_mixture/environment)
+	..()
 	if(environment && consume_nutrition_from_air)
 		environment.remove(diona_handle_air(get_dionastats(), pressure))
 

code/modules/mob/living/carbon/alien/life.dm

@@ -143,6 +143,7 @@
 	return 1
 
 /mob/living/carbon/alien/handle_environment(var/datum/gas_mixture/environment)
+	..()
 	// Both alien subtypes survive in vaccum and suffer in high temperatures,
 	// so I'll just define this once, for both (see radiation comment above)
 	if(!environment) return

code/modules/mob/living/carbon/brain/life.dm

@@ -35,6 +35,7 @@
 
 
 /mob/living/carbon/brain/handle_environment(datum/gas_mixture/environment)
+	..()
 	if(!environment)
 		return
 	var/environment_heat_capacity = environment.heat_capacity()

code/modules/mob/living/carbon/human/life.dm

@@ -303,6 +303,8 @@
 	return breath
 
 /mob/living/carbon/human/handle_environment(datum/gas_mixture/environment)
+	..()
+
 	if(!environment)
 		return
 

code/modules/mob/living/carbon/slime/life.dm

@@ -16,6 +16,7 @@
 	handle_speech_and_mood()
 
 /mob/living/carbon/slime/handle_environment(datum/gas_mixture/environment)
+	..()
 	if(!environment)
 		adjustToxLoss(rand(10,20))
 		return

code/modules/mob/living/life.dm

@@ -10,10 +10,10 @@
 	if(!loc)
 		return
 
-	var/datum/gas_mixture/environment = loc.return_air()
+	var/datum/gas_mixture/gas_environment = loc.return_air()
 	//Handle temperature/pressure differences between body and environment
-	if(environment)
-		handle_environment(environment)
+	if(gas_environment)
+		handle_environment(gas_environment)
 
 	blinded = 0 // Placing this here just show how out of place it is.
 
@@ -57,9 +57,6 @@
 /mob/living/proc/handle_random_events()
 	return
 
-/mob/living/proc/handle_environment(var/datum/gas_mixture/environment)
-	return
-
 /mob/living/proc/update_pulling()
 	if(pulling)
 		if(incapacitated())
@@ -189,3 +186,57 @@
 
 /mob/living/proc/handle_hud_icons_health()
 	return
+
+/mob/living
+	var/datum/weakref/last_weather
+
+/mob/living/proc/is_outside()
+	var/turf/T = loc
+	return istype(T) && T.is_outside()
+
+/mob/living/proc/get_affecting_weather()
+	var/turf/my_turf = get_turf(src)
+	if(!istype(my_turf))
+		return
+	var/turf/actual_loc = loc
+	// If we're standing in the rain, use the turf weather.
+	. = istype(actual_loc) && actual_loc.weather
+	if(!.) // If we're under or inside shelter, use the z-level rain (for ambience)
+		. = SSweather.weather_by_z["[my_turf.z]"]
+
+/mob/living/proc/handle_environment(var/datum/gas_mixture/environment)
+
+	SHOULD_CALL_PARENT(TRUE)
+
+	// Handle physical effects of weather.
+	var/singleton/state/weather/weather_state
+	var/obj/abstract/weather_system/weather = get_affecting_weather()
+	if(weather)
+		weather_state = weather.weather_system.current_state
+		if(istype(weather_state))
+			weather_state.handle_exposure(src, get_weather_exposure(weather), weather)
+
+	// Refresh weather ambience.
+	// Show messages and play ambience.
+	if(client)
+
+		// Work out if we need to change or cancel the current ambience sound.
+		var/send_sound
+		var/mob_ref = WEAKREF(src)
+		if(istype(weather_state))
+			var/ambient_sounds = !is_outside() ? weather_state.ambient_indoors_sounds : weather_state.ambient_sounds
+			var/ambient_sound = length(ambient_sounds) && pick(ambient_sounds)
+			if(GLOB.current_mob_ambience[mob_ref] == ambient_sound)
+				return
+			send_sound = ambient_sound
+			GLOB.current_mob_ambience[mob_ref] = send_sound
+		else if(mob_ref in GLOB.current_mob_ambience)
+			GLOB.current_mob_ambience -= mob_ref
+		else
+			return
+
+		// Push sound to client. Pipe dream TODO: crossfade between the new and old weather ambience.
+		sound_to(src, sound(null, repeat = 0, wait = 0, volume = 0, channel = sound_channels.weather_channel))
+		if(send_sound)
+			sound_to(src, sound(send_sound, repeat = TRUE, wait = 0, volume = 30, channel = sound_channels.weather_channel))
+

code/modules/mob/living/login.dm

@@ -7,4 +7,13 @@
 	//If they're SSD, remove it so they can wake back up.
 	update_antag_icons(mind)
 	reset_death_timers()
+
+	// Clear our cosmetic/sound weather cooldowns.
+	var/obj/abstract/weather_system/weather = get_affecting_weather()
+
+	var/mob_ref = WEAKREF(src)
+	if(istype(weather))
+		weather.mob_shown_weather -= mob_ref
+		weather.mob_shown_wind    -= mob_ref
+	GLOB.current_mob_ambience   -= mob_ref
 	return .

code/modules/mob/mob.dm

@@ -1395,6 +1395,58 @@
 	var/list/data = list()
 	return data
 
+/mob/proc/get_weather_protection()
+	for(var/obj/item/brolly in get_active_hand())
+		if(brolly.gives_weather_protection())
+			LAZYADD(., brolly)
+	if(!LAZYLEN(.))
+		for(var/turf/T as anything in RANGE_TURFS(1, loc))
+			for(var/obj/structure/flora/tree in T)
+				if(tree.protects_against_weather)
+					LAZYADD(., tree)
+
+/mob/living/carbon/human/get_weather_protection()
+	. = ..()
+	if(!LAZYLEN(.))
+		var/obj/item/clothing/head/check_head = get_equipped_item(slot_head_str)
+		if(!istype(check_head) || !check_head.protects_against_weather)
+			return
+		var/obj/item/clothing/suit/check_body = get_equipped_item(slot_wear_suit_str)
+		if(!istype(check_body) || !check_body.protects_against_weather)
+			return
+		LAZYADD(., check_head)
+		LAZYADD(., check_body)
+
+/mob/proc/get_weather_exposure()
+
+	// We're inside something else.
+	if(!isturf(loc))
+		return WEATHER_IGNORE
+
+	var/turf/T = loc
+	// We're under a roof or otherwise shouldn't be being rained on.
+	if(!T.is_outside())
+
+		// For non-multiz we'll give everyone some nice ambience.
+		if(!HasAbove(T.z))
+			return WEATHER_ROOFED
+
+		// For multi-z, check the actual weather on the turf above.
+		// TODO: maybe make this a property of the z-level marker.
+		var/turf/above = GetAbove(T)
+		if(above.weather)
+			return WEATHER_ROOFED
+
+		// Being more than one level down should exempt us from ambience.
+		return WEATHER_IGNORE
+
+	// Nothing's protecting us from the rain here
+	var/list/weather_protection = get_weather_protection()
+	if(LAZYLEN(weather_protection))
+		return WEATHER_PROTECTED
+
+	return WEATHER_EXPOSED
+
 #undef UNBUCKLED
 #undef PARTIALLY_BUCKLED
 #undef FULLY_BUCKLED