Fixes rng block chance not working (#20255)

* fixes rng block chance not working

* Update code/__DEFINES/flags.dm

Co-authored-by: Ryan <80364400+Sirryan2002@users.noreply.github.com>

---------

Co-authored-by: Ryan <80364400+Sirryan2002@users.noreply.github.com>

code/__DEFINES/flags.dm

@@ -78,6 +78,8 @@
 #define NO_MALF_EFFECT_2		(1<<17)
 /// Use when this shouldn't be obscured by large icons.
 #define CRITICAL_ATOM_2			(1<<18)
+/// Use this flag for items that can block randomly
+#define RANDOM_BLOCKER_2		(1<<19)
 
 //Reagent flags
 #define REAGENT_NOREACT			1

code/game/objects/items/weapons/twohanded.dm

@@ -610,6 +610,7 @@
 	origin_tech = "materials=6;syndicate=4"
 	attack_verb = list("sawed", "cut", "hacked", "carved", "cleaved", "butchered", "felled", "timbered")
 	sharp = TRUE
+	flags_2 = RANDOM_BLOCKER_2
 
 /obj/item/twohanded/chainsaw/update_icon_state()
 	if(wielded)

code/modules/mining/lavaland/loot/ashdragon_loot.dm

@@ -37,6 +37,7 @@
 	throwforce = 1
 	hitsound = 'sound/effects/ghost2.ogg'
 	attack_verb = list("attacked", "slashed", "stabbed", "sliced", "torn", "ripped", "diced", "rended")
+	flags_2 = RANDOM_BLOCKER_2
 	var/summon_cooldown = 0
 	var/list/mob/dead/observer/spirits
 

code/modules/mob/living/carbon/human/human_defense.dm

@@ -244,6 +244,10 @@ emp_act
 	var/datum/component/parry/left_hand_parry = l_hand?.GetComponent(/datum/component/parry)
 	var/datum/component/parry/right_hand_parry = r_hand?.GetComponent(/datum/component/parry)
 	if(!right_hand_parry && !left_hand_parry)
+		if(l_hand?.flags_2 & RANDOM_BLOCKER_2)
+			return l_hand
+		if(r_hand?.flags_2 & RANDOM_BLOCKER_2)
+			return r_hand
 		return null // no parry component
 
 	if(right_hand_parry && left_hand_parry)