[MIRROR] Fix some attack effects not playing / Fix apply_damage ret…

…urning innacurate values (#1114)

* Fix some attack effects not playing / Fix `apply_damage` returning innacurate values

* Update damage_procs.dm

---------

Co-authored-by: MrMelbert <[email protected]>
Co-authored-by: Mal <[email protected]>

code/modules/mob/living/damage_procs.dm

@@ -61,7 +61,7 @@
 					update_damage_overlays()
 				damage_dealt = actual_hit.get_damage() - delta // Unfortunately bodypart receive_damage doesn't return damage dealt so we do it manually
 			else
-				damage_dealt = adjustBruteLoss(damage_amount, forced = forced)
+				damage_dealt = -1 * adjustBruteLoss(damage_amount, forced = forced)
 			INVOKE_ASYNC(src, TYPE_PROC_REF(/mob/living, adjust_pain), damage_amount) // NOVA EDIT ADDITION - ERP Pain
 		if(BURN)
 			if(isbodypart(def_zone))
@@ -78,18 +78,18 @@
 					damage_source = attacking_item,
 				))
 					update_damage_overlays()
-				damage_dealt = delta - actual_hit.get_damage() // See above
+				damage_dealt = actual_hit.get_damage() - delta // See above
 			else
-				damage_dealt = adjustFireLoss(damage_amount, forced = forced)
+				damage_dealt = -1 * adjustFireLoss(damage_amount, forced = forced)
 			INVOKE_ASYNC(src, TYPE_PROC_REF(/mob/living, adjust_pain), damage_amount) // NOVA EDIT ADDITION - ERP Pain
 		if(TOX)
-			damage_dealt = adjustToxLoss(damage_amount, forced = forced)
+			damage_dealt = -1 * adjustToxLoss(damage_amount, forced = forced)
 		if(OXY)
-			damage_dealt = adjustOxyLoss(damage_amount, forced = forced)
+			damage_dealt = -1 * adjustOxyLoss(damage_amount, forced = forced)
 		if(STAMINA)
-			damage_dealt = adjustStaminaLoss(damage_amount, forced = forced)
+			damage_dealt = -1 * adjustStaminaLoss(damage_amount, forced = forced)
 		if(BRAIN)
-			damage_dealt = adjustOrganLoss(ORGAN_SLOT_BRAIN, damage_amount)
+			damage_dealt = -1 * adjustOrganLoss(ORGAN_SLOT_BRAIN, damage_amount)
 
 	SEND_SIGNAL(src, COMSIG_MOB_AFTER_APPLY_DAMAGE, damage_dealt, damagetype, def_zone, blocked, wound_bonus, bare_wound_bonus, sharpness, attack_direction, attacking_item)
 	return damage_dealt