Merge pull request #11476 from kevinz000/shield_refactor

Completely overhauls how blocking, shields, reflecting, and anything in between is handled. Has some small gameplay effects.

code/modules/clothing/under/_under.dm

@@ -3,6 +3,7 @@
 	name = "under"
 	body_parts_covered = CHEST|GROIN|LEGS|ARMS
 	permeability_coefficient = 0.9
+	block_priority = BLOCK_PRIORITY_UNIFORM
 	slot_flags = ITEM_SLOT_ICLOTHING
 	armor = list("melee" = 0, "bullet" = 0, "laser" = 0,"energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 0, "acid" = 0)
 	var/fitted = FEMALE_UNIFORM_FULL // For use in alternate clothing styles for women

code/modules/clothing/under/color.dm

@@ -79,9 +79,11 @@
 	name = "ancient jumpsuit"
 	desc = "A terribly ragged and frayed grey jumpsuit. It looks like it hasn't been washed in over a decade."
 
-/obj/item/clothing/under/color/grey/glorf/hit_reaction(mob/living/carbon/human/owner, atom/movable/hitby, attack_text = "the attack", final_block_chance = 0, damage = 0, attack_type = MELEE_ATTACK)
-	owner.forcesay(GLOB.hit_appends)
-	return 0
+/obj/item/clothing/under/color/grey/glorf/run_block(mob/living/owner, atom/object, damage, attack_text, attack_type, armour_penetration, mob/attacker, def_zone, final_block_chance, list/block_return)
+	. = ..()
+	if(ishuman(owner))
+		var/mob/living/carbon/human/H = owner
+		H.forcesay(GLOB.hit_appends)
 
 /obj/item/clothing/under/color/blue
 	name = "blue jumpsuit"