Ray cats! (#3465)

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## About The Pull Request
Cats now act like fuzzy Geiger counters!


https://github.com/user-attachments/assets/77a0cdbf-51e9-420d-afad-998e46b69343

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## Why It's Good For The Game
Imagine your own deep lore regarding the NOF here

![image](https://github.com/user-attachments/assets/618e1057-ac76-4a10-9767-c21b6a12b495)


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## Changelog

:cl:
add: Cats have been genetically engineered to detect radiation
/:cl:

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code/__DEFINES/radiation.dm

@@ -57,3 +57,15 @@ Ask ninjanomnom if they're around
 #define RAD_DISTANCE_COEFFICIENT 1 // Lower means further rad spread
 
 #define RAD_HALF_LIFE 90 // The half-life of contaminated objects
+
+#define RAD_GLOW_COLOR "#39ff1430"
+
+#define RAD_LEVEL_NORMAL 9
+#define RAD_LEVEL_MODERATE 100
+#define RAD_LEVEL_HIGH 400
+#define RAD_LEVEL_VERY_HIGH 800
+#define RAD_LEVEL_CRITICAL 1500
+
+#define RAD_MEASURE_SMOOTHING 5
+
+#define RAD_GRACE_PERIOD 2

code/datums/components/radioactive.dm

@@ -30,7 +30,7 @@
 	//Let's make er glow
 	//This relies on parent not being a turf or something. IF YOU CHANGE THAT, CHANGE THIS
 	var/atom/movable/master = parent
-	master.add_filter("rad_glow", 2, list("type" = "outline", "color" = "#39ff1430", "size" = 2))
+	master.add_filter("rad_glow", 2, list("type" = "outline", "color" = RAD_GLOW_COLOR, "size" = 2))
 	addtimer(CALLBACK(src, PROC_REF(glow_loop), master), rand(1,19))//Things should look uneven
 	START_PROCESSING(SSradiation, src)
 

code/game/objects/items/devices/geiger_counter.dm

@@ -1,13 +1,3 @@
-#define RAD_LEVEL_NORMAL 9
-#define RAD_LEVEL_MODERATE 100
-#define RAD_LEVEL_HIGH 400
-#define RAD_LEVEL_VERY_HIGH 800
-#define RAD_LEVEL_CRITICAL 1500
-
-#define RAD_MEASURE_SMOOTHING 5
-
-#define RAD_GRACE_PERIOD 2
-
 /obj/item/geiger_counter //DISCLAIMER: I know nothing about how real-life Geiger counters work. This will not be realistic. ~Xhuis
 	name = "\improper Geiger counter"
 	desc = "A handheld device used for detecting and measuring radiation pulses."
@@ -222,9 +212,3 @@
 	. = ..()
 	if(listeningTo)
 		UnregisterSignal(listeningTo, COMSIG_ATOM_RAD_ACT)
-
-#undef RAD_LEVEL_NORMAL
-#undef RAD_LEVEL_MODERATE
-#undef RAD_LEVEL_HIGH
-#undef RAD_LEVEL_VERY_HIGH
-#undef RAD_LEVEL_CRITICAL

code/modules/mob/living/simple_animal/friendly/cat.dm

@@ -1,7 +1,6 @@
-//Cat
 /mob/living/simple_animal/pet/cat
 	name = "cat"
-	desc = "Kitty!!"
+	desc = "Most modern cats hail from a solarian experimental geneline. The perfect purrtection from rats and radiation."
 	icon = 'icons/mob/pets.dmi'
 	icon_state = "cat2"
 	icon_living = "cat2"
@@ -40,6 +39,13 @@
 
 	footstep_type = FOOTSTEP_MOB_CLAW
 
+	var/grace = RAD_GRACE_PERIOD
+	var/radiation_count = 0
+	var/current_tick_amount = 0
+	var/last_tick_amount = 0
+	var/fail_to_receive = 0
+	var/glow_strength
+
 /mob/living/simple_animal/pet/cat/Initialize()
 	. = ..()
 	ADD_TRAIT(src, TRAIT_HOLDABLE, INNATE_TRAIT)
@@ -177,8 +183,49 @@
 		collar_type = "[initial(collar_type)]"
 	regenerate_icons()
 
+/mob/living/simple_animal/pet/cat/rad_act(amount)
+	. = ..()
+	if(amount <= RAD_BACKGROUND_RADIATION)
+		return
+	current_tick_amount += amount
+	update_glow()
+
+/mob/living/simple_animal/pet/cat/proc/update_glow()
+	var/old_glow_strength = glow_strength
+	switch(radiation_count)
+		if(-INFINITY to RAD_LEVEL_NORMAL)
+			glow_strength = 1
+		if(RAD_LEVEL_NORMAL to RAD_LEVEL_MODERATE)
+			glow_strength = 2
+		if(RAD_LEVEL_MODERATE to RAD_LEVEL_HIGH)
+			glow_strength = 3
+		if(RAD_LEVEL_HIGH to RAD_LEVEL_VERY_HIGH)
+			glow_strength = 4
+		if(RAD_LEVEL_VERY_HIGH to RAD_LEVEL_CRITICAL)
+			glow_strength = 5
+		if(RAD_LEVEL_CRITICAL to INFINITY)
+			glow_strength = 6
+	if((old_glow_strength != glow_strength) && (glow_strength > 1))
+		src.add_filter("ray_cat_glow", 2, list("type" = "outline", "color" = RAD_GLOW_COLOR, "size" = glow_strength))
+	if(glow_strength <= 1)
+		src.remove_filter("ray_cat_glow")
 
 /mob/living/simple_animal/pet/cat/Life()
+	radiation_count -= radiation_count/RAD_MEASURE_SMOOTHING
+	radiation_count += current_tick_amount/RAD_MEASURE_SMOOTHING
+
+	if(current_tick_amount)
+		grace = RAD_GRACE_PERIOD
+		last_tick_amount = current_tick_amount
+	else
+		grace--
+		if(grace <= 0)
+			radiation_count = 0
+
+	current_tick_amount = 0
+
+	update_glow()
+
 	if(!stat && !buckled && !client)
 		if(prob(1))
 			manual_emote(pick("stretches out for a belly rub.", "wags its tail.", "lies down."))