gives the agateram an incredibly subpar dodgeroll (#15431)

* a series of failed attempts and compromises

* dumb gimmick code

* goodbye das1

* trimming the fat, dodgeroll lock for full iframes

Co-authored-by: Hatterhat <Hatterhat@users.noreply.github.com>

modular_skyrat/modules/gladiator/code/game/objects/items/gladiator_items.dm

@@ -41,6 +41,10 @@
 	// aughhghghgh this really should be elementized but this works for now
 	var/faction_bonus_force = 100
 	var/static/list/nemesis_factions = list("mining", "boss")
+	/// how much stamina does it cost to roll
+	var/roll_stamcost = 15
+	/// how far do we roll?
+	var/roll_range = 3
 
 /obj/item/claymore/agateram/attack(mob/living/target, mob/living/carbon/human/user)
 	var/is_nemesis_faction = FALSE
@@ -53,6 +57,38 @@
 	if(is_nemesis_faction)
 		force -= faction_bonus_force
 
+/obj/item/claymore/agateram/afterattack_secondary(atom/target, mob/living/user, params) // dark souls
+	if(user.IsImmobilized()) // no free dodgerolls
+		return
+	var/turf/where_to = get_turf(target)
+	user.apply_damage(damage = roll_stamcost, damagetype = STAMINA)
+	user.Immobilize(0.8 SECONDS) // you dont get to adjust your roll
+	user.throw_at(where_to, range = roll_range, speed = 1, force = MOVE_FORCE_NORMAL)
+	user.apply_status_effect(/datum/status_effect/dodgeroll_iframes)
+	playsound(user, SFX_BODYFALL, 50, TRUE)
+	playsound(user, SFX_RUSTLE, 50, TRUE)
+	return ..()
+
+/datum/status_effect/dodgeroll_iframes
+	id = "dodgeroll_dodging"
+	alert_type = null
+	status_type = STATUS_EFFECT_REFRESH
+	duration = 0.8 SECONDS // worth tweaking?
+
+/datum/status_effect/dodgeroll_iframes/on_apply()
+	RegisterSignal(owner, COMSIG_HUMAN_CHECK_SHIELDS, .proc/whiff)
+	return TRUE
+
+/datum/status_effect/dodgeroll_iframes/on_remove()
+	UnregisterSignal(owner, COMSIG_HUMAN_CHECK_SHIELDS)
+	return ..()
+
+/datum/status_effect/dodgeroll_iframes/proc/whiff()
+	SIGNAL_HANDLER
+	owner.balloon_alert_to_viewers("MISS!")
+	playsound(src, 'sound/weapons/thudswoosh.ogg', 50, TRUE, -1)
+	return SHIELD_BLOCK
+
 /obj/structure/closet/crate/necropolis/gladiator
 	name = "gladiator chest"