thank you github

code/modules/mob/living/silicon/ai/ai_defense.dm

@@ -1,15 +1,9 @@
-
 /mob/living/silicon/ai/attacked_by(obj/item/I, mob/living/user, def_zone)
+	. = ..()
+	if(!.)
+		return FALSE
 	if(I.force && I.damtype != STAMINA && stat != DEAD) //only sparks if real damage is dealt.
 		spark_system.start()
-	return ..()
-
-
-/mob/living/silicon/ai/attack_alien(mob/living/carbon/alien/humanoid/M)
-	if(!SSticker.HasRoundStarted())
-		to_chat(M, "You cannot attack people before the game has started.")
-		return
-	..()
 
 /mob/living/silicon/ai/attack_slime(mob/living/simple_animal/slime/user)
 	return //immune to slimes

code/modules/mob/living/silicon/pai/pai_defense.dm

@@ -26,13 +26,14 @@
 			fold_in(force = 1)
 			Knockdown(200)
 
+//ATTACK HAND IGNORING PARENT RETURN VALUE
 /mob/living/silicon/pai/attack_hand(mob/living/carbon/human/user)
 	switch(user.a_intent)
-		if("help")
+		if(INTENT_HELP)
 			visible_message("<span class='notice'>[user] gently pats [src] on the head, eliciting an off-putting buzzing from its holographic field.</span>")
-		if("disarm")
+		if(INTENT_DISARM)
 			visible_message("<span class='notice'>[user] boops [src] on the head!</span>")
-		if("harm")
+		if(INTENT_HARM)
 			user.do_attack_animation(src)
 			if (user.name == master)
 				visible_message("<span class='notice'>Responding to its master's touch, [src] disengages its holochassis emitter, rapidly losing coherence.</span>")
@@ -41,14 +42,19 @@
 					if(user.put_in_hands(card))
 						user.visible_message("<span class='notice'>[user] promptly scoops up [user.p_their()] pAI's card.</span>")
 			else
+				if(HAS_TRAIT(user, TRAIT_PACIFISM))
+					to_chat(user, "<span class='notice'>You don't want to hurt [src]!</span>")
+					return
 				visible_message("<span class='danger'>[user] stomps on [src]!.</span>")
 				take_holo_damage(2)
+		else
+			grabbedby(user)
 
-/mob/living/silicon/pai/bullet_act(obj/item/projectile/Proj)
-	if(Proj.stun)
+/mob/living/silicon/pai/bullet_act(obj/item/projectile/P, def_zone)
+	if(P.stun)
 		fold_in(force = TRUE)
-		src.visible_message("<span class='warning'>The electrically-charged projectile disrupts [src]'s holomatrix, forcing [src] to fold in!</span>")
-	. = ..(Proj)
+		visible_message("<span class='warning'>The electrically-charged projectile disrupts [src]'s holomatrix, forcing [src] to fold in!</span>")
+	. = ..()
 
 /mob/living/silicon/pai/stripPanelUnequip(obj/item/what, mob/who, where) //prevents stripping
 	to_chat(src, "<span class='warning'>Your holochassis stutters and warps intensely as you attempt to interact with the object, forcing you to cease lest the field fail.</span>")

code/modules/mob/living/silicon/robot/robot_defense.dm

@@ -13,7 +13,19 @@
 		spark_system.start()
 	return ..()
 
+/mob/living/silicon/robot/attack_hulk(mob/living/carbon/human/user, does_attack_animation = FALSE)
+	. = ..()
+	if(.)
+		spark_system.start()
+		spawn(0)
+			step_away(src,user,15)
+			sleep(3)
+			step_away(src,user,15)
+
 /mob/living/silicon/robot/attack_alien(mob/living/carbon/alien/humanoid/M)
+	. = ..()
+	if(!.) // the attack was blocked or was help/grab intent
+		return
 	if (M.a_intent == INTENT_DISARM)
 		if(!(lying))
 			M.do_attack_animation(src, ATTACK_EFFECT_DISARM)
@@ -30,24 +42,19 @@
 				visible_message("<span class='danger'>[M] has forced back [src]!</span>", \
 					"<span class='userdanger'>[M] has forced back [src]!</span>", null, COMBAT_MESSAGE_RANGE)
 			playsound(loc, 'sound/weapons/pierce.ogg', 50, 1, -1)
-	else
-		..()
-	return
 
 /mob/living/silicon/robot/attack_slime(mob/living/simple_animal/slime/M)
-	if(..()) //successful slime shock
-		flash_act()
-		var/stunprob = M.powerlevel * 7 + 10
-		if(prob(stunprob) && M.powerlevel >= 8)
-			adjustBruteLoss(M.powerlevel * rand(6,10))
-
-	var/damage = rand(1, 3)
-
+	. = ..()
+	if(!.) //unsuccessful slime shock
+		return
+	var/stunprob = M.powerlevel * 7 + 10
+	var/damage = M.powerlevel * rand(6,10)
+	if(prob(stunprob) && M.powerlevel >= 8)
+		flash_act(affect_silicon = TRUE) //my borg eyes!
 	if(M.is_adult)
-		damage = rand(20, 40)
+		damage += rand(10, 20)
 	else
-		damage = rand(5, 35)
-	damage = round(damage / 2) // borgs receive half damage
+		damage += rand(2, 17)
 	adjustBruteLoss(damage)
 	updatehealth()
 
@@ -56,23 +63,17 @@
 //ATTACK HAND IGNORING PARENT RETURN VALUE
 /mob/living/silicon/robot/attack_hand(mob/living/carbon/human/user)
 	add_fingerprint(user)
-	if(opened && !wiresexposed && !issilicon(user))
-		if(cell)
-			cell.update_icon()
-			cell.add_fingerprint(user)
-			user.put_in_active_hand(cell)
-			to_chat(user, "<span class='notice'>You remove \the [cell].</span>")
-			cell = null
-			update_icons()
-			diag_hud_set_borgcell()
+	if(opened && !wiresexposed && cell && !issilicon(user))
+		cell.update_icon()
+		cell.add_fingerprint(user)
+		user.put_in_active_hand(cell)
+		to_chat(user, "<span class='notice'>You remove \the [cell].</span>")
+		cell = null
+		update_icons()
+		diag_hud_set_borgcell()
 
 	if(!opened)
-		if(..()) // hulk attack
-			spark_system.start()
-			spawn(0)
-				step_away(src,user,15)
-				sleep(3)
-				step_away(src,user,15)
+		return ..()
 
 /mob/living/silicon/robot/fire_act()
 	if(!on_fire) //Silicons don't gain stacks from hotspots, but hotspots can ignite them
@@ -182,9 +183,9 @@
 			if (stat != DEAD)
 				adjustBruteLoss(30)
 
-/mob/living/silicon/robot/bullet_act(var/obj/item/projectile/Proj)
-	..(Proj)
+/mob/living/silicon/robot/bullet_act(obj/item/projectile/P, def_zone)
+	..()
 	updatehealth()
-	if(prob(75) && Proj.damage > 0)
+	if(prob(75) && P.damage > 0)
 		spark_system.start()
 	return 2

code/modules/mob/living/silicon/silicon_defense.dm

@@ -6,7 +6,10 @@
 	return 2
 
 /mob/living/silicon/attack_alien(mob/living/carbon/alien/humanoid/M)
-	if(..()) //if harm or disarm intent
+	. = ..()
+	if(!.) // the attack was blocked or was help/grab intent
+		return
+	if(M.a_intent == INTENT_HARM)
 		var/damage = 20
 		if (prob(90))
 			log_combat(M, src, "attacked")
@@ -49,34 +52,33 @@
 /mob/living/silicon/attack_paw(mob/living/user)
 	return attack_hand(user)
 
-/mob/living/silicon/attack_larva(mob/living/carbon/alien/larva/L)
-	if(L.a_intent == INTENT_HELP)
-		visible_message("[L.name] rubs its head against [src].")
-
-/mob/living/silicon/attack_hulk(mob/living/carbon/human/user, does_attack_animation = 0)
+/mob/living/silicon/attack_hulk(mob/living/carbon/human/user, does_attack_animation = FALSE)
 	if(user.a_intent == INTENT_HARM)
-		..(user, 1)
+		. = ..(user, TRUE)
+		if(.)
+			return
 		adjustBruteLoss(rand(10, 15))
 		playsound(loc, "punch", 25, 1, -1)
 		visible_message("<span class='danger'>[user] has punched [src]!</span>", \
 				"<span class='userdanger'>[user] has punched [src]!</span>")
-		return 1
-	return 0
+		return TRUE
+	return FALSE
 
-//ATTACK HAND IGNORING PARENT RETURN VALUE
 /mob/living/silicon/attack_hand(mob/living/carbon/human/M)
+	. = ..()
+	if(.) //the attack was blocked
+		return
 	switch(M.a_intent)
-		if ("help")
+		if (INTENT_HELP)
 			M.visible_message("[M] pets [src].", \
 							"<span class='notice'>You pet [src].</span>")
-		if("grab")
+		if(INTENT_GRAB)
 			grabbedby(M)
 		else
 			M.do_attack_animation(src, ATTACK_EFFECT_PUNCH)
 			playsound(src.loc, 'sound/effects/bang.ogg', 10, 1)
 			visible_message("<span class='danger'>[M] punches [src], but doesn't leave a dent.</span>", \
 				"<span class='warning'>[M] punches [src], but doesn't leave a dent.</span>", null, COMBAT_MESSAGE_RANGE)
-	return 0
 
 /mob/living/silicon/attack_drone(mob/living/simple_animal/drone/M)
 	if(M.a_intent == INTENT_HARM)
@@ -108,19 +110,25 @@
 			M.visible_message("<span class='boldwarning'>[M] is thrown off of [src]!</span>")
 	flash_act(affect_silicon = 1)
 
-/mob/living/silicon/bullet_act(obj/item/projectile/Proj)
-	if((Proj.damage_type == BRUTE || Proj.damage_type == BURN))
-		adjustBruteLoss(Proj.damage)
-		if(prob(Proj.damage*1.5))
+/mob/living/silicon/bullet_act(obj/item/projectile/P, def_zone)
+	if(P.original != src || P.firer != src) //try to block or reflect the bullet, can't do so when shooting oneself
+		if(reflect_bullet_check(P, def_zone))
+			return -1 // complete projectile permutation
+		if(check_shields(P, P.damage, "the [P.name]", PROJECTILE_ATTACK, P.armour_penetration))
+			P.on_hit(src, 100, def_zone)
+			return 2
+	if((P.damage_type == BRUTE || P.damage_type == BURN))
+		adjustBruteLoss(P.damage)
+		if(prob(P.damage*1.5))
 			for(var/mob/living/M in buckled_mobs)
 				M.visible_message("<span class='boldwarning'>[M] is knocked off of [src]!</span>")
 				unbuckle_mob(M)
 				M.Knockdown(40)
-	if(Proj.stun || Proj.knockdown)
+	if(P.stun || P.knockdown)
 		for(var/mob/living/M in buckled_mobs)
 			unbuckle_mob(M)
-			M.visible_message("<span class='boldwarning'>[M] is knocked off of [src] by the [Proj]!</span>")
-	Proj.on_hit(src)
+			M.visible_message("<span class='boldwarning'>[M] is knocked off of [src] by the [P]!</span>")
+	P.on_hit(src)
 	return 2
 
 /mob/living/silicon/flash_act(intensity = 1, override_blindness_check = 0, affect_silicon = 0, visual = 0, type = /obj/screen/fullscreen/flash/static)