manually copied tgstation#47443

code/modules/projectiles/gun.dm

@@ -37,6 +37,7 @@
 	var/burst_spread = 0				//Spread induced by the gun itself during burst fire per iteration. Only checked if spread is 0.
 	var/randomspread = 1				//Set to 0 for shotguns. This is used for weapons that don't fire all their bullets at once.
 	var/inaccuracy_modifier = 1
+	var/pb_knockback = 0
 
 	lefthand_file = 'icons/mob/inhands/weapons/guns_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/weapons/guns_righthand.dmi'
@@ -125,6 +126,10 @@
 		if(message)
 			if(pointblank)
 				user.visible_message("<span class='danger'>[user] fires [src] point blank at [pbtarget]!</span>", null, null, COMBAT_MESSAGE_RANGE)
+				if(pb_knockback > 0)
+					var/atom/throw_target = get_edge_target_turf(pbtarget, user.dir)
+					pbtarget.throw_at(throw_target, pb_knockback, 2)
+
 			else
 				user.visible_message("<span class='danger'>[user] fires [src]!</span>", null, null, COMBAT_MESSAGE_RANGE)
 

code/modules/projectiles/guns/ballistic/revolver.dm

@@ -273,6 +273,7 @@
 						"Maple" = "dshotgun-l",
 						"Rosewood" = "dshotgun-p"
 						)
+	pb_knockback = 3 // it's a super shotgun!
 
 /obj/item/gun/ballistic/revolver/doublebarrel/attackby(obj/item/A, mob/user, params)
 	..()

code/modules/projectiles/guns/ballistic/shotgun.dm

@@ -12,6 +12,8 @@
 	var/recentpump = 0 // to prevent spammage
 	weapon_weight = WEAPON_MEDIUM
 
+	pb_knockback = 2
+
 /obj/item/gun/ballistic/shotgun/attackby(obj/item/A, mob/user, params)
 	. = ..()
 	if(.)

code/modules/projectiles/guns/ballistic/toy.dm

@@ -56,6 +56,7 @@
 	item_flags = NONE
 	casing_ejector = FALSE
 	can_suppress = FALSE
+	pb_knockback = 0
 
 /obj/item/gun/ballistic/shotgun/toy/process_chamber(empty_chamber = 0)
 	..()