Merge pull request #8776 from Ghommie/Ghommie-cit96

Porting in donut fixes, beepsky smash and Neurotoxin reworks.

code/modules/mob/living/brain/brain_item.dm

@@ -265,7 +265,7 @@
 	var/list/datum/brain_trauma/possible_traumas = list()
 	for(var/T in subtypesof(brain_trauma_type))
 		var/datum/brain_trauma/BT = T
-		if(can_gain_trauma(BT, resilience))
+		if(can_gain_trauma(BT, resilience) && initial(BT.random_gain))
 			possible_traumas += BT
 
 	if(!LAZYLEN(possible_traumas))

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

@@ -284,12 +284,8 @@
 	if(health < maxHealth)
 		adjustBruteLoss(-8) //Fast life regen
 	for(var/obj/item/reagent_containers/food/snacks/donut/D in range(1, src)) //Frosts nearby donuts!
-		if(D.icon_state != "donut2")
-			D.name = "frosted donut"
-			D.icon_state = "donut2"
-			D.reagents.add_reagent("sprinkles", 2)
-			D.bonus_reagents = list("sprinkles" = 2, "sugar" = 1)
-			D.filling_color = "#FF69B4"
+		if(!D.is_frosted)
+			D.frost_donut()
 
 /mob/living/simple_animal/pet/cat/cak/attack_hand(mob/living/L)
 	..()