add: normally working invisibility

code/__DEFINES/lighting.dm

@@ -87,6 +87,15 @@
 #define LIGHTING_PLANE_ALPHA_MOSTLY_INVISIBLE 128 //For lighting alpha, small amounts lead to big changes. even at 128 its hard to figure out what is dark and what is light, at 64 you almost can't even tell.
 #define LIGHTING_PLANE_ALPHA_INVISIBLE 0
 
+#define ALPHA_SOURCE_DEFAULT		"default"
+#define ALPHA_SOURCE_CHAMELEON		"chameleon_gene"
+#define ALPHA_SOURCE_SHADOW_CLOAK	"shadow_cloak_gene"
+#define ALPHA_SOURCE_VAMPIRE		"vampire"
+#define ALPHA_SOURCE_SHADOW_THRALL	"shadowling_thrall"
+#define ALPHA_SOURCE_SHADOWLING		"shadowling"
+#define ALPHA_SOURCE_NINJA			"ninja"
+#define ALPHA_SOURCE_CLOCKROBE		"clockrobe"
+
 
 //code assumes higher numbers override lower numbers.
 #define LIGHTING_NO_UPDATE 0

code/game/dna/genes/goon_powers.dm

@@ -31,59 +31,59 @@
 // Stealth Enhancers
 /////////////////////////
 
-/datum/dna/gene/basic/stealth
-	instability = GENE_INSTABILITY_MODERATE
-
-
-/datum/dna/gene/basic/stealth/deactivate(mob/living/mutant, flags)
-	. = ..()
-	mutant.alpha = initial(mutant.alpha)
-
-
 // WAS: /datum/bioEffect/darkcloak
-/datum/dna/gene/basic/stealth/darkcloak
+/datum/dna/gene/basic/darkcloak
 	name = "Cloak of Darkness"
 	desc = "Enables the subject to bend low levels of light around themselves, creating a cloaking effect."
 	activation_messages = list("You begin to fade into the shadows.")
 	deactivation_messages = list("You become fully visible.")
 	activation_prob = 25
+	instability = GENE_INSTABILITY_MODERATE
 
 
-/datum/dna/gene/basic/stealth/darkcloak/New()
+/datum/dna/gene/basic/darkcloak/New()
 	..()
 	block = GLOB.shadowblock
 
 
-/datum/dna/gene/basic/stealth/darkcloak/OnMobLife(mob/living/mutant)
+/datum/dna/gene/basic/darkcloak/OnMobLife(mob/living/mutant)
 	var/turf/simulated/T = get_turf(mutant)
 	if(!istype(T))
 		return
 	var/light_available = T.get_lumcount() * 10
 	if(light_available <= 2)
-		mutant.alpha = round(mutant.alpha * 0.8)
+		mutant.alpha_multiply(0.8, ALPHA_SOURCE_SHADOW_CLOAK)
 	else
-		mutant.alpha = initial(mutant.alpha)
+		mutant.alpha_set(1, ALPHA_SOURCE_SHADOW_CLOAK)
 
+/datum/dna/gene/basic/darkcloak/deactivate(mob/living/mutant, flags)
+	. = ..()
+	mutant.alpha_set(1, ALPHA_SOURCE_SHADOW_CLOAK)
 
 //WAS: /datum/bioEffect/chameleon
-/datum/dna/gene/basic/stealth/chameleon
+/datum/dna/gene/basic/chameleon
 	name = "Chameleon"
 	desc = "The subject becomes able to subtly alter light patterns to become invisible, as long as they remain still."
 	activation_messages = list("You feel one with your surroundings.")
 	deactivation_messages = list("You feel oddly visible.")
 	activation_prob = 25
+	instability = GENE_INSTABILITY_MODERATE
 
 
-/datum/dna/gene/basic/stealth/chameleon/New()
+/datum/dna/gene/basic/chameleon/New()
 	..()
 	block = GLOB.chameleonblock
 
 
-/datum/dna/gene/basic/stealth/chameleon/OnMobLife(mob/living/mutant)
+/datum/dna/gene/basic/chameleon/OnMobLife(mob/living/mutant)
 	if((world.time - mutant.last_movement) >= 30 && (mutant.mobility_flags & MOBILITY_MOVE) && !HAS_TRAIT(mutant, TRAIT_RESTRAINED))
-		mutant.alpha -= 25
+		mutant.alpha_add(-25 / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_CHAMELEON)
 	else
-		mutant.alpha = round(255 * 0.80)
+		mutant.alpha_set(0.80, ALPHA_SOURCE_CHAMELEON)
+
+/datum/dna/gene/basic/darkcloak/deactivate(mob/living/mutant, flags)
+	. = ..()
+	mutant.alpha_set(1, ALPHA_SOURCE_CHAMELEON)
 
 
 /////////////////////////////////////////////////////////////////////////////////////////

code/game/gamemodes/clockwork/clockwork_items.dm

@@ -716,7 +716,7 @@
 			animate(carbon, alpha = 20, time = 1 SECONDS)
 			ADD_TRAIT(src, TRAIT_NODROP, CURSED_ITEM_TRAIT(INVIS_SPELL))
 			sleep(10)
-			carbon.alpha = 20
+			carbon.alpha_set(20 / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_CLOCKROBE)
 			add_attack_logs(user, user, "cloaked [src]", ATKLOG_ALL)
 			addtimer(CALLBACK(src, PROC_REF(uncloak), carbon), 10 SECONDS)
 		if(enchant_type == SPEED_SPELL)
@@ -729,11 +729,11 @@
 	else
 		ToggleHood()
 
-/obj/item/clothing/suit/hooded/clockrobe/proc/uncloak(mob/user)
+/obj/item/clothing/suit/hooded/clockrobe/proc/uncloak(mob/living/user)
 	animate(user, alpha = 255, time = 1 SECONDS)
 	REMOVE_TRAIT(src, TRAIT_NODROP, CURSED_ITEM_TRAIT(INVIS_SPELL))
 	sleep(10)
-	user.alpha = 255
+	user.alpha_set(1, ALPHA_SOURCE_CLOCKROBE)
 	deplete_spell()
 
 /obj/item/clothing/suit/hooded/clockrobe/proc/unspeed(mob/living/carbon/carbon)

code/game/gamemodes/shadowling/shadowling_abilities.dm

@@ -139,7 +139,7 @@
 	user.SetWeakened(0)
 	user.SetKnockdown(0)
 	user.incorporeal_move = INCORPOREAL_NORMAL
-	user.alpha = 0
+	user.alpha_set(0, ALPHA_SOURCE_SHADOWLING)
 	user.ExtinguishMob()
 	user.forceMove(get_turf(user)) //to properly move the mob out of a potential container
 	user.pulledby?.stop_pulling()
@@ -151,7 +151,7 @@
 
 	user.visible_message("<span class='warning'>[user] suddenly manifests!</span>", "<span class='shadowling'>The pressure becomes too much and you vacate the interdimensional darkness.</span>")
 	user.incorporeal_move = INCORPOREAL_NONE
-	user.alpha = 255
+	user.alpha_set(1, ALPHA_SOURCE_SHADOWLING)
 	user.forceMove(get_turf(user))
 
 
@@ -174,17 +174,17 @@
 	return new /datum/spell_targeting/self
 
 
-/obj/effect/proc_holder/spell/shadowling_guise/cast(list/targets, mob/user = usr)
+/obj/effect/proc_holder/spell/shadowling_guise/cast(list/targets, mob/living/user = usr)
 	user.visible_message("<span class='warning'>[user] suddenly fades away!</span>", "<span class='shadowling'>You veil yourself in darkness, making you harder to see.</span>")
-	user.alpha = 10
+	user.alpha_set(10 / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_SHADOW_THRALL)
 	addtimer(CALLBACK(src, PROC_REF(reveal), user), conseal_time)
 
 
-/obj/effect/proc_holder/spell/shadowling_guise/proc/reveal(mob/user)
+/obj/effect/proc_holder/spell/shadowling_guise/proc/reveal(mob/living/user)
 	if(QDELETED(user))
 		return
 
-	user.alpha = initial(user.alpha)
+	user.alpha_set(1, ALPHA_SOURCE_SHADOW_THRALL)
 	user.visible_message("<span class='warning'>[user] appears from nowhere!</span>", "<span class='shadowling'>Your shadowy guise slips away.</span>")
 
 
@@ -956,12 +956,12 @@
 		user.visible_message("<span class='danger'>[user] suddenly vanishes!</span>", \
 							"<span class='shadowling'>You begin phasing through planes of existence. Use the ability again to return.</span>")
 		user.incorporeal_move = INCORPOREAL_NORMAL
-		user.alpha = 0
+		user.alpha_set(0, ALPHA_SOURCE_SHADOWLING)
 	else
 		user.visible_message("<span class='danger'>[user] suddenly appears from nowhere!</span>", \
 							"<span class='shadowling'>You return from the space between worlds.</span>")
 		user.incorporeal_move = INCORPOREAL_NONE
-		user.alpha = 255
+		user.alpha_set(1, ALPHA_SOURCE_SHADOWLING)
 
 
 /obj/effect/proc_holder/spell/aoe/ascendant_storm

code/game/objects/items/weapons/tanks/jetpack.dm

@@ -314,13 +314,15 @@
 
 
 /obj/item/tank/jetpack/suit/ninja/allow_thrust(num, use_fuel = TRUE)
-	var/mob/user = get_owner()
+	var/mob/living/user = get_owner()
 	if(!user)
 		return FALSE
-	if(!skip_trails && user.alpha == NINJA_ALPHA_INVISIBILITY)
+
+	if(!skip_trails && user.alpha_get(ALPHA_SOURCE_NINJA) == NINJA_ALPHA_INVISIBILITY / LIGHTING_PLANE_ALPHA_VISIBLE)
 		configure_jetpack(skip_trails = TRUE)
-	else if(skip_trails && user.alpha != NINJA_ALPHA_INVISIBILITY)
+	else if(skip_trails && user.alpha_get(ALPHA_SOURCE_NINJA) != NINJA_ALPHA_INVISIBILITY / LIGHTING_PLANE_ALPHA_VISIBLE)
 		configure_jetpack(skip_trails = FALSE)
+
 	return ..()
 
 

code/modules/antagonists/space_ninja/suit/ninja_equipment_actions/ninja_spirit_form.dm

@@ -39,6 +39,7 @@
 		animate(ninja, color ="#00ff00", time = 6)
 		if(!stealth)
 			animate(ninja, alpha = NINJA_ALPHA_SPIRIT_FORM, time = 6) //Трогаем альфу - только если мы не в стелсе
+			ninja.alpha_set(NINJA_ALPHA_SPIRIT_FORM / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_NINJA)
 			ninja.visible_message(span_warning("[ninja.name] looks very unstable and strange!"), span_notice("You now can pass almost through everything.")) //Если мы не в стелсе, пишем текст того, что видят другие
 		else
 			to_chat(ninja, span_notice("You now can pass almost through everything."))	// Если же невидимы - пишем только себе
@@ -67,6 +68,7 @@
 		animate(ninja, color = null, time = 6)
 		if(!stealth)	//Не стоит трогать альфу, когда мы уже невидимы
 			animate(ninja, alpha = NINJA_ALPHA_NORMAL, time = 6)
+			ninja.alpha_set(NINJA_ALPHA_NORMAL / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_NINJA)
 			ninja.visible_message(span_warning("[ninja.name] becomes stable again!"), span_notice("You lose your ability to pass the corporeal...")) //Если мы не в стелсе, пишем текст того, что видят другие
 		else
 			to_chat(ninja, span_notice("You lose your ability to pass the corporeal...")) // Если же невидимы - пишем только себе

code/modules/antagonists/space_ninja/suit/ninja_equipment_actions/ninja_stealth.dm

@@ -34,7 +34,8 @@
 				return
 			stealth = !stealth
 			n_shoes.silence_steps = TRUE
-			animate(ninja, alpha = NINJA_ALPHA_INVISIBILITY,time = 6)	// Я долго думала над этим и решила, что с учётом того, что теперь любой выстрел/удар от/по ниндзя выводит его из инвиза. Можно спокойно выкрутить альфу в 0
+			animate(ninja, alpha = NINJA_ALPHA_INVISIBILITY, time = 6)	// Я долго думала над этим и решила, что с учётом того, что теперь любой выстрел/удар от/по ниндзя выводит его из инвиза. Можно спокойно выкрутить альфу в 0
+			ninja.alpha_set(NINJA_ALPHA_INVISIBILITY / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_NINJA)
 			new /obj/effect/temp_visual/dir_setting/ninja/cloak(get_turf(ninja), ninja.dir)
 			ninja.visible_message(span_warning("[ninja.name] расстворил[genderize_ru(ninja.gender, "ся", "ась", "ось", "ись") ] в воздухе!"), span_notice("Теперь вас невозможно увидеть невооружённым глазом. Ровно как и стандартными оптическими приборами. Нагрузка костюма начала увеличиваться..."))
 			ninja.AddComponent(/datum/component/ninja_states_breaker, src)
@@ -66,6 +67,7 @@
 		var/stealth_alpha
 		stealth_alpha = spirited ? NINJA_ALPHA_SPIRIT_FORM : NINJA_ALPHA_NORMAL
 		animate(ninja, alpha = stealth_alpha, time = 6)
+		ninja.alpha_set(stealth_alpha / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_NINJA)
 		new /obj/effect/temp_visual/dir_setting/ninja(get_turf(ninja), ninja.dir)
 		ninja.visible_message(span_warning("[ninja.name] появ[genderize_ru(ninja.gender, "ляется", "илась", "илось", "ились") ] из воздуха!"), span_notice("Теперь вас снова видно невооружённым глазом."))
 		qdel(ninja.GetComponent(/datum/component/ninja_states_breaker))

code/modules/antagonists/space_ninja/suit/suit.dm

@@ -357,9 +357,9 @@
 	// Проверка во избежание потенциальных абузов инвиза
 	// Как например если после сканирования t-ray сканером сразу выключить инвиз...
 	// Что приводило к бесплатному инвизу.
-	if(ninja.alpha == NINJA_ALPHA_INVISIBILITY || ninja.alpha == NINJA_ALPHA_SPIRIT_FORM)
+	if(ninja.alpha_get(ALPHA_SOURCE_NINJA) == NINJA_ALPHA_INVISIBILITY / LIGHTING_PLANE_ALPHA_VISIBLE || ninja.alpha_get(ALPHA_SOURCE_NINJA) == NINJA_ALPHA_SPIRIT_FORM / LIGHTING_PLANE_ALPHA_VISIBLE)
 		if(!stealth && !spirited)
-			ninja.alpha = NINJA_ALPHA_NORMAL
+			ninja.alpha_set(NINJA_ALPHA_NORMAL / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_NINJA)
 	//Safe checks to prevent potential abuse of power.
 	if(!is_teleport_allowed(ninja.z) && spirited)
 		to_chat(ninja, span_warning("This place forcibly stabilizes your body somehow! You can't use \"Spirit Form\" there!"))

code/modules/antagonists/vampire/vampire_datum.dm

@@ -130,7 +130,6 @@
 		user.dna?.species?.hunger_type = initial(user.dna.species.hunger_type)
 		user.dna?.species?.hunger_icon = initial(user.dna.species.hunger_icon)
 
-	animate(user, alpha = 255)
 	REMOVE_TRAITS_IN(user, VAMPIRE_TRAIT)
 
 
@@ -556,7 +555,9 @@
 /datum/antagonist/vampire/proc/handle_vampire_cloak()
 	if(!ishuman(owner.current))
 		animate(owner.current, time = 5, alpha = 255)
+		owner.current.alpha_set(1, ALPHA_SOURCE_VAMPIRE)
 		return
+
 	var/turf/simulated/owner_turf = get_turf(owner.current)
 	var/light_available = ((iscloaking)?owner_turf.get_lumcount():owner_turf.get_lumcount(0.5)) * 10
 
@@ -565,16 +566,21 @@
 
 	if(!iscloaking && !is_goon_cloak || owner.current.on_fire)
 		animate(owner.current, time = 5, alpha = 255)
+		owner.current.alpha_set(1, ALPHA_SOURCE_VAMPIRE)
 		owner.current.remove_movespeed_modifier(/datum/movespeed_modifier/vampire_cloak)
 		return
 
 	if(light_available <= 2)
 		animate(owner.current, time = 5, alpha = 38)
+		owner.current.alpha_set(38 / LIGHTING_PLANE_ALPHA_VISIBLE, ALPHA_SOURCE_VAMPIRE)
 		if(iscloaking)
 			owner.current.add_movespeed_modifier(/datum/movespeed_modifier/vampire_cloak)
+
 		return
+
 	owner.current.remove_movespeed_modifier(/datum/movespeed_modifier/vampire_cloak)
 	animate(owner.current, time = 5, alpha = 204) // 255 * 0.80
+	owner.current.alpha_set(0.8, ALPHA_SOURCE_VAMPIRE)
 
 
 /datum/antagonist/vampire/vv_edit_var(var_name, var_value)

code/modules/mob/living/alpha.dm

@@ -0,0 +1,36 @@
+/mob/living/proc/alpha_update()
+	var/result = 1
+	for(var/source in alphas)
+		result *= alphas[source]
+
+	alpha = LIGHTING_PLANE_ALPHA_VISIBLE * result
+
+/mob/living/proc/alpha_prepare(source)
+	if(!(source in alphas))
+		alphas[source] = 1
+
+/mob/living/proc/alpha_finalise(source)
+	alphas[source] = clamp(alphas[source], 0, 1)
+	if(alphas[source] == 1 && source != ALPHA_SOURCE_DEFAULT)
+		alphas.Remove(source)
+
+/mob/living/proc/alpha_add(val, source = ALPHA_SOURCE_DEFAULT)
+	alpha_prepare(source)
+	alphas[source] += val
+	alpha_finalise(source)
+	alpha_update()
+
+/mob/living/proc/alpha_multiply(val, source = ALPHA_SOURCE_DEFAULT)
+	alpha_prepare(source)
+	alphas[source] *= val
+	alpha_finalise(source)
+	alpha_update()
+
+/mob/living/proc/alpha_set(val, source = ALPHA_SOURCE_DEFAULT)
+	alpha_prepare(source)
+	alphas[source] = val
+	alpha_finalise(source)
+	alpha_update()
+
+/mob/living/proc/alpha_get(source = ALPHA_SOURCE_DEFAULT)
+	return alphas[source]

code/modules/mob/living/living_defines.dm

@@ -141,3 +141,6 @@
 
 	/// Famous last words -- if succumbing, what the user's last words were
 	var/last_words
+
+	/// List of alpha changelog from various sources
+	var/list/alphas = list(ALPHA_SOURCE_DEFAULT = 1)

paradise.dme

@@ -2346,6 +2346,7 @@
 #include "code\modules\mob\dead\observer\observer_say.dm"
 #include "code\modules\mob\dead\observer\orbit.dm"
 #include "code\modules\mob\dead\observer\spells.dm"
+#include "code\modules\mob\living\alpha.dm"
 #include "code\modules\mob\living\autohiss.dm"
 #include "code\modules\mob\living\damage_procs.dm"
 #include "code\modules\mob\living\death.dm"