sigh

code/modules/antagonists/swarmer/swarmer.dm

@@ -158,10 +158,11 @@
 	face_atom(A)
 	if(!isturf(loc))
 		return
-	if(next_move > world.time)
+	if(!CheckActionCooldown())
 		return
 	if(!A.Adjacent(src))
 		return
+	DelayNextAction()
 	A.swarmer_act(src)
 
 /atom/proc/swarmer_act(mob/living/simple_animal/hostile/swarmer/S)

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

@@ -102,7 +102,7 @@
 	to_chat(brainmob, "<span class='notice'>You feel slightly disoriented. That's normal when you're just a brain.</span>")
 
 /obj/item/organ/brain/attackby(obj/item/O, mob/user, params)
-	user.changeNext_move(CLICK_CD_MELEE)
+	user.DelayNextAction(CLICK_CD_MELEE)
 	if(brainmob)
 		O.attack(brainmob, user) //Oh noooeeeee
 

code/modules/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner.dm

@@ -70,7 +70,7 @@ Difficulty: Medium
 
 /obj/item/melee/transforming/cleaving_saw/miner/attack(mob/living/target, mob/living/carbon/human/user)
 	target.add_stun_absorption("miner", 10, INFINITY)
-	..()
+	. = ..()
 	target.stun_absorption -= "miner"
 
 /obj/item/projectile/kinetic/miner

code/modules/power/singularity/particle_accelerator/particle_accelerator.dm

@@ -103,7 +103,6 @@
 				did_something = TRUE
 
 	if(did_something)
-		user.changeNext_move(CLICK_CD_MELEE)
 		update_state()
 		update_icon()
 		return