Adds Mosin Obrez (Sawn-Off Mosin Nagant) & Sawing-Off Tweaks (#10008)

* MOSIN OBREZ (and sawing-off tweaks)

Introduces the Mosin Obrez (sawn-off Mosin)
In addition to regular sawn-off changes, adds wild spread w/ 0.5 factor.
Adds sprites for Mosin Obrez
Mosin Nagant & Obrez requires 2 hands to rack the bolt now.
Mosin can now have interactions done while the bolt is closed (mounting/removing bayonet, sawing, etc)
Mosin can only be loaded while bolt is open (like how guns work)
Sawing a gun now checks the tool for the TOOL_SAW behavior.
Sawing is now under attackby() for ballistic guns rather than being unique to each shotgun.
Sawing a gun with an attached bayonet returns the bayonet and removes the mounting lug.
Adds additional gun variables for sawn-off guns (unique name, can_sawoff variable, unique in-hand sprites)

* Medium Weight Mosin Obrez

Sets the Obrez to be MEDIUM weight instead of HEAVY to allow 1-handed firing (still requires 2 to rack the bolt).

* Energy Saw Sawing & Sawing Tweaks

Energy Saws now function as saws (already had toolspeed set smh)
Plasmacutters can be used to sawoff guns again
Unique shotgun sawing code removed to use parent proc

* Improvised Shotgun Tweaks

Can no longer delete cabling by reslinging a shotgun that's slung.
Examine text tells you if there is a sling attached now.

* adds suppressor support

Sawing guns with suppressors return the suppressor and disallow attaching a new one
Integrally suppressed guns will no longer be suppressed after hacking off the barrel, but do not give a free suppressor

* Obrez now KICKS when fired 1-handed

similar to warden's shottie, has spread 5 when fired 1-handed

* Adds innate spread to Obrez

Obrez now has spread 10, ontop of bonus_spread 25 from being sawn off.

* Removes the Russian SOUL

Changes sawn description from "Огонь!" ("Open fire!") to something in English.

code/game/objects/items/melee/energy.dm

@@ -135,6 +135,7 @@
 	w_class = WEIGHT_CLASS_NORMAL
 	sharpness = IS_SHARP
 	light_color = "#40ceff"
+	tool_behaviour = TOOL_SAW
 	toolspeed = 0.7 //faster as a saw
 
 /obj/item/melee/transforming/energy/sword/cyborg

code/modules/projectiles/gun.dm

@@ -23,7 +23,7 @@
 	var/vary_fire_sound = TRUE
 	var/fire_sound_volume = 50
 	var/dry_fire_sound = 'sound/weapons/gun_dry_fire.ogg'
-	var/suppressed = null					//whether or not a message is displayed when fired
+	var/suppressed = null	//whether or not a message is displayed when fired
 	var/can_suppress = FALSE
 	var/suppressed_sound = 'sound/weapons/gunshot_silenced.ogg'
 	var/suppressed_volume = 10
@@ -32,7 +32,10 @@
 	var/clumsy_check = TRUE
 	var/obj/item/ammo_casing/chambered = null
 	trigger_guard = TRIGGER_GUARD_NORMAL	//trigger guard on the weapon, hulks can't fire them with their big meaty fingers
+	var/can_sawoff = FALSE
+	var/sawn_name = null				//used if gun has a special sawn-off rename
 	var/sawn_desc = null				//description change if weapon is sawn-off
+	var/sawn_item_state = null			//used if gun has a special sawn-off in-hand sprite
 	var/sawn_off = FALSE
 	var/burst_size = 1					//how large a burst is
 	var/fire_delay = 0					//rate of fire for burst firing and semi auto

code/modules/projectiles/guns/ballistic.dm

@@ -263,6 +263,9 @@
 			to_chat(user, "<span class='notice'>You screw \the [S] onto \the [src].</span>")
 			install_suppressor(A)
 			return
+	if((A.tool_behaviour == TOOL_SAW || istype(A, /obj/item/gun/energy/plasmacutter)) && can_sawoff == TRUE)
+		sawoff(user)
+		return
 	return FALSE
 
 /obj/item/gun/ballistic/process_fire(atom/target, mob/living/user, message = TRUE, params = null, zone_override = "", bonus_spread = 0)
@@ -407,7 +410,6 @@
 #undef BRAINS_BLOWN_THROW_RANGE
 
 
-//TODO: sawing off guns with TOOL_SAW
 /obj/item/gun/ballistic/proc/sawoff(mob/user)
 	if(sawn_off)
 		to_chat(user, "<span class='warning'>\The [src] is already shortened!</span>")
@@ -424,13 +426,31 @@
 		if(sawn_off)
 			return
 		user.visible_message("[user] shortens \the [src]!", "<span class='notice'>You shorten \the [src].</span>")
-		name = "sawn-off [src.name]"
+		if (bayonet)
+			bayonet.forceMove(drop_location())
+			clear_bayonet()
+		if (suppressed)
+			if (istype(suppressed, /obj/item/suppressor))
+				//weight class is set later, don't need to worry about removing extra weight from the suppressor
+				var/obj/S = suppressed
+				S.forceMove(drop_location())
+			//If it's integrally suppressed, you're messing that up by chopping off most of it from the tip
+			suppressed = null
+		if (sawn_name)
+			name = sawn_name
+		else
+			name = "sawn-off [src.name]"
 		desc = sawn_desc
 		w_class = WEIGHT_CLASS_NORMAL
-		item_state = "gun"
+		if (sawn_item_state)
+			item_state = sawn_item_state
+		else
+			item_state = "gun"
 		slot_flags &= ~ITEM_SLOT_BACK	//you can't sling it on your back
-		slot_flags |= ITEM_SLOT_BELT		//but you can wear it on your belt (poorly concealed under a trenchcoat, ideally)
+		slot_flags |= ITEM_SLOT_BELT	//but you can wear it on your belt (poorly concealed under a trenchcoat, ideally)
 		recoil = SAWN_OFF_RECOIL
+		can_bayonet = FALSE				//you got rid of the mounting lug with the rest of the barrel, dumbass
+		can_suppress = FALSE			//ditto for the threaded barrel
 		sawn_off = TRUE
 		spread_multiplier = 1.6
 		update_icon()

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

@@ -20,6 +20,9 @@
 	add_overlay("[icon_state]_bolt[bolt_locked ? "_locked" : ""]")
 
 /obj/item/gun/ballistic/rifle/rack(mob/user = null)
+	if(!is_wielded)
+		to_chat(user, "<span class='warning'>You require your other hand to be free to rack the [bolt_wording] of \the [src]!</span>")
+		return
 	if(bolt_locked == FALSE)
 		to_chat(user, "<span class='notice'>You open the bolt of \the [src].</span>")
 		playsound(src, rack_sound, rack_sound_volume, rack_sound_vary)
@@ -35,7 +38,7 @@
 	return ..()
 
 /obj/item/gun/ballistic/rifle/attackby(obj/item/A, mob/user, params)
-	if (!bolt_locked)
+	if ((istype(A, /obj/item/ammo_casing/a762) || istype(A, /obj/item/ammo_box/a762)) && !bolt_locked)
 		to_chat(user, "<span class='notice'>The bolt is closed!</span>")
 		return
 	return ..()
@@ -44,6 +47,14 @@
 	. = ..()
 	. += "The bolt is [bolt_locked ? "open" : "closed"]."
 
+/obj/item/gun/ballistic/rifle/shoot_live_shot(mob/living/user, pointblank, atom/pbtarget, message)
+	if(sawn_off == TRUE)
+		if(!is_wielded)
+			recoil = 5
+		else
+			recoil = SAWN_OFF_RECOIL
+	. = ..()
+
 ///////////////////////
 // BOLT ACTION RIFLE //
 ///////////////////////
@@ -53,6 +64,10 @@
 	desc = "This piece of junk looks like something that could have been used 700 years ago. It feels slightly moist."
 	icon_state = "moistnugget"
 	item_state = "moistnugget"
+	can_sawoff = TRUE
+	sawn_name = "\improper Mosin Obrez"
+	sawn_desc = "A hand cannon of a rifle, try not to break your wrists."
+	sawn_item_state = "halfnugget"
 	slot_flags = ITEM_SLOT_BACK
 	mag_type = /obj/item/ammo_box/magazine/internal/boltaction
 	can_bayonet = TRUE
@@ -61,9 +76,20 @@
 	w_class = WEIGHT_CLASS_BULKY
 	weapon_weight = WEAPON_HEAVY
 
+/obj/item/gun/ballistic/rifle/boltaction/sawoff(mob/user)
+	. = ..()
+	//Has 25 bonus spread due to sawn-off accuracy penalties
+	if (.)
+		//Wild spread only applies to innate and unwielded spread
+		spread = 10
+		wild_spread = TRUE
+		wild_factor = 0.5
+		weapon_weight = WEAPON_MEDIUM
+
 /obj/item/gun/ballistic/rifle/boltaction/enchanted
 	name = "enchanted bolt action rifle"
 	desc = "Careful not to lose your head."
+	can_sawoff = FALSE
 	var/guns_left = 30
 	mag_type = /obj/item/ammo_box/magazine/internal/boltaction/enchanted
 

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

@@ -46,17 +46,9 @@
 	icon_state = "riotshotgun"
 	item_state = "shotgun"
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/riot
+	can_sawoff = TRUE
 	sawn_desc = "Come with me if you want to live."
 
-/obj/item/gun/ballistic/shotgun/riot/attackby(obj/item/A, mob/user, params)
-	..()
-	if(istype(A, /obj/item/circular_saw) || istype(A, /obj/item/gun/energy/plasmacutter))
-		sawoff(user)
-	if(istype(A, /obj/item/melee/transforming/energy))
-		var/obj/item/melee/transforming/energy/W = A
-		if(W.active)
-			sawoff(user)
-
 // Automatic Shotguns//
 
 /obj/item/gun/ballistic/shotgun/automatic
@@ -191,6 +183,7 @@
 	flags_1 = CONDUCT_1
 	slot_flags = ITEM_SLOT_BACK
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/dual
+	can_sawoff = TRUE
 	sawn_desc = "Omar's coming!"
 	obj_flags = UNIQUE_RENAME
 	rack_sound_volume = 0
@@ -227,15 +220,6 @@
 		)
 	. = ..()
 
-/obj/item/gun/ballistic/shotgun/doublebarrel/attackby(obj/item/A, mob/user, params)
-	..()
-	if(istype(A, /obj/item/melee/transforming/energy))
-		var/obj/item/melee/transforming/energy/W = A
-		if(W.active)
-			sawoff(user)
-	if(istype(A, /obj/item/circular_saw) || istype(A, /obj/item/gun/energy/plasmacutter))
-		sawoff(user)
-
 // IMPROVISED SHOTGUN //
 
 /obj/item/gun/ballistic/shotgun/doublebarrel/improvised
@@ -255,6 +239,9 @@
 /obj/item/gun/ballistic/shotgun/doublebarrel/improvised/attackby(obj/item/A, mob/user, params)
 	..()
 	if(istype(A, /obj/item/stack/cable_coil) && !sawn_off)
+		if(slung)
+			to_chat(user, "<span class='warning'>There is already a sling on [src]!</span>")
+			return
 		var/obj/item/stack/cable_coil/C = A
 		if(C.use(10))
 			slot_flags = ITEM_SLOT_BACK
@@ -273,9 +260,14 @@
 	. = ..()
 	if(. && slung) //sawing off the gun removes the sling
 		new /obj/item/stack/cable_coil(get_turf(src), 10)
-		slung = 0
+		slung = FALSE
 		update_icon()
 
+/obj/item/gun/ballistic/shotgun/doublebarrel/improvised/examine(mob/user)
+	. = ..()
+	if (slung)
+		. += "It has a shoulder sling fashioned from spare wiring attached."
+
 /obj/item/gun/ballistic/shotgun/doublebarrel/improvised/sawn
 	name = "sawn-off improvised shotgun"
 	desc = "A single-shot shotgun. Better not miss."
@@ -295,6 +287,7 @@
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/bounty
 	w_class = WEIGHT_CLASS_BULKY
 	weapon_weight = WEAPON_MEDIUM
+	can_sawoff = FALSE
 	force = 10 //it has a hook on it
 	attack_verb = list("slashed", "hooked", "stabbed")
 	hitsound = 'sound/weapons/bladeslice.ogg'