fix

code/game/mecha/mecha.dm

@@ -24,6 +24,8 @@
 	infra_luminosity = 15 //byond implementation is bugged.
 	force = 5
 	flags_1 = HEAR_1|BLOCK_FACE_ATOM_1
+	attack_hand_speed = CLICK_CD_MELEE
+	attack_hand_is_action = TRUE
 	var/can_move = 0 //time of next allowed movement
 	var/mob/living/occupant = null
 	var/step_in = 10 //make a step in step_in/10 sec.

code/game/mecha/mecha_defense.dm

@@ -55,10 +55,6 @@
 
 
 /obj/mecha/on_attack_hand(mob/living/user, act_intent = user.a_intent, unarmed_attack_flags)
-	. = ..()
-	if(.)
-		return
-	user.changeNext_move(CLICK_CD_MELEE) // Ugh. Ideally we shouldn't be setting cooldowns outside of click code.
 	user.do_attack_animation(src, ATTACK_EFFECT_PUNCH)
 	playsound(loc, 'sound/weapons/tap.ogg', 40, 1, -1)
 	user.visible_message("<span class='danger'>[user] hits [name]. Nothing happens</span>", null, null, COMBAT_MESSAGE_RANGE)