Much nicer syringe gun implementation

Makes syringe guns a type of launcher gun, and removes the hack
projectile.
Also moves syringe and dart gun source files into the modules/projectile
folder.

baystation12.dme

@@ -1331,7 +1331,9 @@
 #include "code\modules\projectiles\guns\launcher\crossbow.dm"
 #include "code\modules\projectiles\guns\launcher\pneumatic.dm"
 #include "code\modules\projectiles\guns\launcher\rocket.dm"
+#include "code\modules\projectiles\guns\launcher\syringe_gun.dm"
 #include "code\modules\projectiles\guns\projectile\automatic.dm"
+#include "code\modules\projectiles\guns\projectile\dartgun.dm"
 #include "code\modules\projectiles\guns\projectile\pistol.dm"
 #include "code\modules\projectiles\guns\projectile\revolver.dm"
 #include "code\modules\projectiles\guns\projectile\shotgun.dm"
@@ -1351,11 +1353,9 @@
 #include "code\modules\reagents\Chemistry-Reagents-Antidepressants.dm"
 #include "code\modules\reagents\Chemistry-Reagents.dm"
 #include "code\modules\reagents\Chemistry-Recipes.dm"
-#include "code\modules\reagents\dartgun.dm"
 #include "code\modules\reagents\grenade_launcher.dm"
 #include "code\modules\reagents\reagent_containers.dm"
 #include "code\modules\reagents\reagent_dispenser.dm"
-#include "code\modules\reagents\syringe_gun.dm"
 #include "code\modules\reagents\reagent_containers\blood_pack.dm"
 #include "code\modules\reagents\reagent_containers\borghydro.dm"
 #include "code\modules\reagents\reagent_containers\dropper.dm"

code/defines/obj/weapon.dm

@@ -67,7 +67,7 @@
 	icon_state = "bike_horn"
 	item_state = "bike_horn"
 	throwforce = 3
-	w_class = 1.0
+	w_class = 2
 	throw_speed = 3
 	throw_range = 15
 	attack_verb = list("HONKED")

code/game/objects/items/weapons/storage/boxes.dm

@@ -99,13 +99,13 @@
 
 	New()
 		..()
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
-		new /obj/item/ammo_casing/gas_cartridge( src )
+		new /obj/item/weapon/syringe_cartridge( src )
 
 
 /obj/item/weapon/storage/box/beakers

code/modules/mob/living/carbon/human/human_defense.dm

@@ -304,10 +304,7 @@ emp_act
 					throw_mode_off()
 					return
 
-		var/dtype = BRUTE
+		var/dtype = O.damtype
-		if(istype(O,/obj/item/weapon))
-			var/obj/item/weapon/W = O
-			dtype = W.damtype
 		var/throw_damage = O.throwforce*(speed/THROWFORCE_SPEED_DIVISOR)
 
 		var/zone
@@ -370,17 +367,21 @@ emp_act
 					affecting.embed(I)
 
 		// Begin BS12 momentum-transfer code.
-		if(O.throw_source && speed >= THROWNOBJ_KNOCKBACK_SPEED)
+		var/mass = 1.5
-			var/obj/item/weapon/W = O
+		if(istype(O, /obj/item))
-			var/momentum = speed/THROWNOBJ_KNOCKBACK_DIVISOR
+			var/obj/item/I = O
+			mass = I.w_class/THROWNOBJ_KNOCKBACK_DIVISOR
+		var/momentum = speed*mass
+		
+		if(O.throw_source && momentum >= THROWNOBJ_KNOCKBACK_SPEED)
 			var/dir = get_dir(O.throw_source, src)
 
 			visible_message("\red [src] staggers under the impact!","\red You stagger under the impact!")
 			src.throw_at(get_edge_target_turf(src,dir),1,momentum)
 			
-			if(!W || !src) return
+			if(!O || !src) return
 
-			if(W.loc == src && W.sharp) //Projectile is embedded and suitable for pinning.
+			if(O.loc == src && O.sharp) //Projectile is embedded and suitable for pinning.
 				var/turf/T = near_wall(dir,2)
 
 				if(T)

code/modules/mob/living/living_defense.dm

@@ -103,10 +103,7 @@
 /mob/living/hitby(atom/movable/AM as mob|obj,var/speed = THROWFORCE_SPEED_DIVISOR)//Standardization and logging -Sieve
 	if(istype(AM,/obj/))
 		var/obj/O = AM
-		var/dtype = BRUTE
+		var/dtype = O.damtype
-		if(istype(O,/obj/item/weapon))
-			var/obj/item/weapon/W = O
-			dtype = W.damtype
 		var/throw_damage = O.throwforce*(speed/THROWFORCE_SPEED_DIVISOR)
 
 		var/miss_chance = 15
@@ -136,17 +133,21 @@
 					msg_admin_attack("[src.name] ([src.ckey]) was hit by a [O], thrown by [M.name] ([assailant.ckey]) (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[src.x];Y=[src.y];Z=[src.z]'>JMP</a>)")
 
 		// Begin BS12 momentum-transfer code.
-		if(O.throw_source && speed >= THROWNOBJ_KNOCKBACK_SPEED)
+		var/mass = 1.5
-			var/obj/item/weapon/W = O
+		if(istype(O, /obj/item))
-			var/momentum = speed/THROWNOBJ_KNOCKBACK_DIVISOR
+			var/obj/item/I = O
+			mass = I.w_class/THROWNOBJ_KNOCKBACK_DIVISOR
+		var/momentum = speed*mass
+		
+		if(O.throw_source && momentum >= THROWNOBJ_KNOCKBACK_SPEED)
 			var/dir = get_dir(O.throw_source, src)
 
 			visible_message("\red [src] staggers under the impact!","\red You stagger under the impact!")
 			src.throw_at(get_edge_target_turf(src,dir),1,momentum)
 
-			if(!W || !src) return
+			if(!O || !src) return
 
-			if(W.sharp) //Projectile is suitable for pinning.
+			if(O.sharp) //Projectile is suitable for pinning.
 				//Handles embedding for non-humans and simple_animals.
 				embed(O)
 

code/modules/projectiles/guns/alien.dm

@@ -1,6 +1,6 @@
 //Vox pinning weapon.
 /obj/item/weapon/gun/launcher/spikethrower
-	name = "Vox spike thrower"
+	name = "vox spike thrower"
 	desc = "A vicious alien projectile weapon. Parts of it quiver gelatinously, as though the thing is insectile and alive."
 
 	var/last_regen = 0

code/modules/projectiles/guns/energy/stun.dm

@@ -49,7 +49,7 @@
 	projectile_type = /obj/item/projectile/energy/dart
 
 /obj/item/weapon/gun/energy/crossbow/largecrossbow
-	name = "Energy Crossbow"
+	name = "energy crossbow"
 	desc = "A weapon favored by mercenary infiltration teams."
 	w_class = 4
 	force = 10

code/modules/projectiles/guns/launcher.dm

@@ -22,14 +22,10 @@
 /obj/item/weapon/gun/launcher/proc/update_release_force(obj/item/projectile)
 	return 0
 
-/obj/item/weapon/gun/launcher/process_projectile(obj/projectile, mob/user, atom/target, var/target_zone, var/params=null, var/pointblank=0, var/reflex=0)
+/obj/item/weapon/gun/launcher/process_projectile(obj/item/projectile, mob/user, atom/target, var/target_zone, var/params=null, var/pointblank=0, var/reflex=0)
-	if(!istype(projectile, /obj/item)) return 0
+	update_release_force(projectile)
-	
+	projectile.loc = get_turf(user)
-	var/obj/item/I = projectile
+	projectile.throw_at(target, throw_distance, release_force, user)
-	
-	update_release_force(I)
-	I.loc = get_turf(user)
-	I.throw_at(target, throw_distance, release_force, user)
 	return 1
 
 /obj/item/weapon/gun/launcher/attack_self(mob/living/user as mob)

code/modules/projectiles/guns/launcher/pneumatic.dm

@@ -62,7 +62,7 @@
 		icon_state = "pneumatic-tank"
 		item_state = "pneumatic-tank"
 		user.update_icons()
-	else if(W.w_class <= max_w_class)
+	else if(istype(W) && W.w_class <= max_w_class)
 		var/total_stored = 0
 		for(var/obj/item/O in src.contents)
 			total_stored += O.w_class

code/modules/projectiles/guns/launcher/syringe_gun.dm

@@ -0,0 +1,135 @@
+/obj/item/weapon/syringe_cartridge
+	name = "compressed gas cartridge"
+	desc = "An impact-triggered compressed gas cartridge that can fitted to a syringe for rapid injection."
+	icon = 'icons/obj/ammo.dmi'
+	icon_state = "syringe-cartridge"
+	var/icon_flight = "syringe-cartridge-flight" //so it doesn't look so weird when shot
+	flags = CONDUCT
+	slot_flags = SLOT_BELT
+	throwforce = 3
+	force = 3
+	w_class = 1
+	var/obj/item/weapon/reagent_containers/syringe/syringe
+	var/primed = 0
+
+/obj/item/weapon/syringe_cartridge/update_icon()
+	underlays.Cut()
+	if(syringe)
+		underlays += image(syringe.icon, src, syringe.icon_state)
+		underlays += syringe.filling
+
+/obj/item/weapon/syringe_cartridge/attackby(obj/item/I, mob/user)
+	if(istype(I, /obj/item/weapon/reagent_containers/syringe))
+		syringe = I
+		user << "<span class='notice'>You carefully insert [syringe] into [src].</span>"
+		user.remove_from_mob(syringe)
+		syringe.loc = src
+		sharp = 1
+		update_icon()
+
+/obj/item/weapon/syringe_cartridge/attack_self(mob/user)
+	if(syringe)
+		user << "<span class='notice'>You remove [syringe] from [src].</span>"
+		user.put_in_hands(syringe)
+		syringe = null
+		sharp = initial(sharp)
+		update_icon()
+
+/obj/item/weapon/syringe_cartridge/proc/prime()
+	//the icon state will revert back when update_icon() is called from throw_impact()
+	icon_state = icon_flight
+	underlays.Cut()
+	primed = 1
+
+/obj/item/weapon/syringe_cartridge/throw_impact(atom/hit_atom, var/speed)
+	..() //handles embedding for us. Should have a decent chance if thrown fast enough
+	if(syringe)
+		//check speed to see if we hit hard enough to trigger the rapid injection
+		//incidentally, this means syringe_cartridges can be used with the pneumatic launcher
+		if(speed >= 10 && primed && isliving(hit_atom))
+			var/mob/living/L = hit_atom
+			//unfortuately we don't know where the dart will actually hit, since that's done by the parent.
+			if(L.can_inject())
+				if(syringe.reagents)
+					syringe.reagents.trans_to(L, 15)
+		
+		syringe.break_syringe(iscarbon(hit_atom)? hit_atom : null)
+		syringe.update_icon()
+	
+	icon_state = initial(icon_state) //reset icon state
+	update_icon()
+
+/obj/item/weapon/gun/launcher/syringe
+	name = "syringe gun"
+	desc = "A spring loaded rifle designed to fit syringes, designed to incapacitate unruly patients from a distance."
+	icon = 'icons/obj/gun.dmi'
+	icon_state = "syringegun"
+	item_state = "syringegun"
+	w_class = 3
+	force = 7
+	matter = list("metal" = 2000)
+	slot_flags = SLOT_BELT
+	
+	fire_sound = 'sound/weapons/empty.ogg'
+	fire_sound_text = "a metallic thunk"
+	recoil = 0
+	release_force = 10
+	throw_distance = 10
+	
+	var/list/darts = list()
+	var/max_darts = 1
+	var/obj/item/weapon/syringe_cartridge/next
+
+/obj/item/weapon/gun/launcher/syringe/consume_next_projectile()
+	if(next)
+		next.prime()
+		return next
+	return null
+
+/obj/item/weapon/gun/launcher/syringe/handle_post_fire()
+	..()
+	darts -= next
+	next = null
+
+/obj/item/weapon/gun/launcher/syringe/attack_self(mob/living/user as mob)
+	if(next)
+		user.visible_message("[user] unlatches and carefully relax the bolt on [src].", "<span class='notice'>You unlatch and carefully relax the bolt on [src], unloading the spring.</span>")
+		next = null
+	else if(darts.len)
+		playsound(src.loc, 'sound/weapons/flipblade.ogg', 50, 1)
+		user.visible_message("[user] draws back the bolt on [src], clicking it into place.", "<span class='warning'>You draw back the bolt on the [src], loading the spring!</span>")
+		next = darts[1]
+
+/obj/item/weapon/gun/launcher/syringe/attack_hand(mob/living/user as mob)
+	if(src in user)
+		if(!darts.len)
+			user << "<span class='warning'>[src] is empty.</span>"
+			return
+		if(next)
+			user << "<span class='warning'>The cover on [src] is locked shut.</span>"
+			return
+		var/obj/item/weapon/syringe_cartridge/C = darts[1]
+		darts -= C
+		user.put_in_hands(C)
+		user.visible_message("[user] removes \a [C] from [src].", "<span class='notice'>You remove \a [C] from [src].</span>")
+	else
+		..()
+
+/obj/item/weapon/gun/launcher/syringe/attackby(var/obj/item/A as obj, mob/user as mob)
+	if(istype(A, /obj/item/weapon/syringe_cartridge))
+		var/obj/item/weapon/syringe_cartridge/C = A
+		if(darts.len >= max_darts)
+			user << "<span class='warning'>[src] is full!</span>"
+			return
+		user.remove_from_mob(C)
+		C.loc = src
+		darts += C //add to the end
+		user.visible_message("[user] inserts \a [C] into [src].", "<span class='notice'>You insert \a [C] into [src].</span>")
+	else
+		..()
+
+/obj/item/weapon/gun/launcher/syringe/rapid
+	name = "rapid syringe gun"
+	desc = "A modification of the syringe gun design, using a rotating cylinder to store up to four syringes. The spring still needs to be drawn between shots."
+	icon_state = "rapidsyringegun"
+	max_darts = 4

code/modules/projectiles/guns/projectile.dm

@@ -78,12 +78,12 @@
 		switch(AM.mag_type)
 			if(MAGAZINE)
 				if(ammo_magazine)
-					user << "<span class='warning'>[src] already has a magazine loaded!</span>" //already a magazine here
+					user << "<span class='warning'>[src] already has a magazine loaded.</span>" //already a magazine here
 					return
 				user.remove_from_mob(AM)
 				AM.loc = src
 				ammo_magazine = AM
-				user.visible_message("[user] inserts [AM] into [src].", "<span class='notice'>You insert [AM] into [src]!</span>")
+				user.visible_message("[user] inserts [AM] into [src].", "<span class='notice'>You insert [AM] into [src].</span>")
 				playsound(src.loc, 'sound/weapons/flipblade.ogg', 50, 1)
 			if(SPEEDLOADER)
 				if(loaded.len >= max_shells)
@@ -99,7 +99,7 @@
 						AM.stored_ammo -= C //should probably go inside an ammo_magazine proc, but I guess less proc calls this way...
 						count++
 				if(count)
-					user.visible_message("[user] reloads [src].", "<span class='notice'>You load [count] round\s into [src]!</span>")
+					user.visible_message("[user] reloads [src].", "<span class='notice'>You load [count] round\s into [src].</span>")
 					playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 		AM.update_icon()
 	else if(istype(A, /obj/item/ammo_casing))
@@ -107,13 +107,13 @@
 		if(!(load_method & SINGLE_CASING) || caliber != C.caliber)
 			return //incompatible
 		if(loaded.len >= max_shells)
-			user << "<span class='warning'>[src] is full!</span>"
+			user << "<span class='warning'>[src] is full.</span>"
 			return
 
 		user.remove_from_mob(C)
 		C.loc = src
 		loaded.Insert(1, C) //add to the head of the list
-		user.visible_message("[user] inserts \a [C] into [src].", "<span class='notice'>You insert \a [C] into [src]!</span>")
+		user.visible_message("[user] inserts \a [C] into [src].", "<span class='notice'>You insert \a [C] into [src].</span>")
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 
 	update_icon()
@@ -123,7 +123,7 @@
 /obj/item/weapon/gun/projectile/proc/unload_ammo(mob/user, var/allow_dump=1)
 	if(ammo_magazine)
 		user.put_in_hands(ammo_magazine)
-		user.visible_message("[user] removes [ammo_magazine] from [src].", "<span class='notice'>You remove [ammo_magazine] from [src]!</span>")
+		user.visible_message("[user] removes [ammo_magazine] from [src].", "<span class='notice'>You remove [ammo_magazine] from [src].</span>")
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 		ammo_magazine.update_icon()
 		ammo_magazine = null
@@ -138,14 +138,14 @@
 					count++
 				loaded.Cut()
 			if(count)
-				user.visible_message("[user] unloads [src].", "<span class='notice'>You unload [count] round\s from [src]!</span>")
+				user.visible_message("[user] unloads [src].", "<span class='notice'>You unload [count] round\s from [src].</span>")
 		else if(load_method & SINGLE_CASING)
 			var/obj/item/ammo_casing/C = loaded[loaded.len]
 			loaded.len--
 			user.put_in_hands(C)
-			user.visible_message("[user] removes \a [C] from [src].", "<span class='notice'>You remove \a [C] from [src]!</span>")
+			user.visible_message("[user] removes \a [C] from [src].", "<span class='notice'>You remove \a [C] from [src].</span>")
 	else
-		user << "<span class='warning'>[src] is empty!</span>"
+		user << "<span class='warning'>[src] is empty.</span>"
 	update_icon()
 
 /obj/item/weapon/gun/projectile/attackby(var/obj/item/A as obj, mob/user as mob)

code/modules/reagents/syringe_gun.dm

@@ -1,130 +0,0 @@
-/obj/item/ammo_casing/gas_cartridge
-	name = "compressed gas cartridge"
-	desc = "An impact-triggered compressed gas cartridge that can fitted to a syringe for rapid injection. It's not very useful until primed though."  //i.e. only works when shot out of a syringe gun. 
-	icon_state = "syringe-cartridge"
-	caliber = "syringe"
-	projectile_type = /obj/item/projectile/bullet/syringe
-	w_class = 2 //mainly so that they can be yanked out
-	var/obj/item/weapon/reagent_containers/syringe/syringe
-
-/obj/item/ammo_casing/gas_cartridge/update_icon()
-	underlays.Cut()
-	if(syringe)
-		underlays += image(syringe.icon, src, syringe.icon_state)
-		underlays += syringe.filling
-
-/obj/item/ammo_casing/gas_cartridge/attackby(obj/item/I, mob/user)
-	if(istype(I, /obj/item/weapon/reagent_containers/syringe))
-		syringe = I
-		user << "<span class='notice'>You carefully insert [syringe] into [src].</span>"
-		user.remove_from_mob(syringe)
-		syringe.loc = src
-		var/obj/item/projectile/bullet/syringe/S = BB
-		if(istype(S))
-			S.damage = 1
-			S.sharp = 1
-		update_icon()
-
-/obj/item/ammo_casing/gas_cartridge/attack_self(mob/user)
-	if(syringe)
-		user << "<span class='notice'>You remove [syringe] from [src].</span>"
-		user.put_in_hands(syringe)
-		syringe = null
-		var/obj/item/projectile/bullet/syringe/S = BB
-		if(istype(S))
-			S.damage = initial(S.damage)
-			S.sharp = initial(S.sharp)
-		update_icon()
-
-//This was kind of rushed, there may very well be a simpler way to implement this.
-//Sort of hacky, though nearly not as bad as the previous implementation:
-//Basically the syringe gun is supposed to launch the entire syringe+cartrige assemby, but hitby() isn't powerfull enough to do what we need.
-//Instead, we fire a projectile that transfers the reagents, and teleport the cartridge once we impact something.
-/obj/item/projectile/bullet/syringe
-	name = "syringe dart"
-	icon_state = "cbbolt"
-	damage = 3
-	check_armour = "bullet"
-	sharp = 0
-	embed = 0 //we handle this ourselves
-	var/obj/item/ammo_casing/gas_cartridge/cartridge
-	var/embedded = 0
-	kill_count = 10 //short range
-
-/obj/item/projectile/bullet/syringe/New(newloc)
-	..()
-	//ensure that cartridge is always set
-	cartridge = newloc
-	if(!istype(cartridge))
-		del(src)
-
-/obj/item/projectile/bullet/syringe/on_hit(var/atom/target, var/blocked = 0, var/def_zone = null)
-	//..() //not really necessary
-	if(blocked < 2 && cartridge.syringe && isliving(target))
-		var/mob/living/L = target
-		
-		//inject
-		if(L.can_inject(target_zone=def_zone))
-			if(cartridge.syringe.reagents)
-				cartridge.syringe.reagents.trans_to(L, 15)
-			cartridge.syringe.update_icon()
-			cartridge.update_icon()
-		
-		//embed
-		L.embed(cartridge, def_zone)
-		embedded = 1
-
-/obj/item/projectile/bullet/syringe/on_impact(atom/A)
-	if(!embedded)
-		cartridge.loc = src.loc
-	if(cartridge.syringe)
-		cartridge.syringe.break_syringe(iscarbon(A)? A : null)
-		cartridge.update_icon()
-
-			
-			
-/obj/item/weapon/gun/projectile/syringe
-	name = "syringe gun"
-	desc = "A spring loaded rifle designed to fit syringes, designed to incapacitate unruly patients from a distance."
-	icon = 'icons/obj/gun.dmi'
-	icon_state = "syringegun"
-	item_state = "syringegun"
-	w_class = 3
-	force = 7
-	matter = list("metal" = 2000)
-	slot_flags = SLOT_BELT
-	
-	caliber = "syringe"
-	fire_sound = 'sound/weapons/empty.ogg'
-	fire_sound_text = "a metallic thunk"
-	recoil = 0
-	handle_casings = HOLD_CASINGS
-	load_method = SINGLE_CASING
-	max_shells = 1
-	var/drawn = 0
-
-/obj/item/weapon/gun/projectile/syringe/consume_next_projectile()
-	if(chambered)
-		return chambered.BB
-	return null
-
-/obj/item/weapon/gun/projectile/syringe/attack_self(mob/living/user as mob)
-	if(!chambered && loaded.len)
-		playsound(src.loc, 'sound/weapons/flipblade.ogg', 50, 1)
-		user.visible_message("[user] draws back the bolt on [src], clicking it into place.", "<span class='warning'>You draw back the bolt on the [src], loading the spring!</span>")
-		var/obj/item/ammo_casing/AC = loaded[1] //load next casing.
-		loaded -= AC //Remove casing from loaded list.
-		chambered = AC
-		max_shells -= 1 //to prevent people from storing an extra syringe
-		update_icon()
-
-/obj/item/weapon/gun/projectile/syringe/handle_post_fire()
-	..()
-	chambered = null
-	max_shells = initial(max_shells)
-
-/obj/item/weapon/gun/projectile/syringe/rapid
-	name = "rapid syringe gun"
-	desc = "A modification of the syringe gun design, using a rotating cylinder to store up to four syringes. The spring still needs to be drawn between shots."
-	icon_state = "rapidsyringegun"
-	max_shells = 4

code/modules/research/designs.dm

@@ -1312,7 +1312,7 @@ datum/design/item/weapon/rapidsyringe
 	id = "rapidsyringe"
 	req_tech = list("combat" = 3, "materials" = 3, "engineering" = 3, "biotech" = 2)
 	materials = list("$metal" = 5000, "$glass" = 1000)
-	build_path = /obj/item/weapon/gun/projectile/syringe/rapid
+	build_path = /obj/item/weapon/gun/launcher/syringe/rapid
 /*
 datum/design/item/weapon/largecrossbow
 	name = "Energy Crossbow"

code/setup.dm

@@ -83,7 +83,7 @@
 #define FIRE_MAX_FIRESUIT_STACKS  20 // If the number of stacks goes above this firesuits won't protect you anymore. If not, you can walk around while on fire like a badass.
 
 #define THROWFORCE_SPEED_DIVISOR    5  // The throwing speed value at which the throwforce multiplier is exactly 1.
-#define THROWNOBJ_KNOCKBACK_SPEED   15 // The minumum speed of a thrown object that will cause living mobs it hits to be knocked back.
+#define THROWNOBJ_KNOCKBACK_SPEED   15 // The minumum speed of a w_class 2 thrown object that will cause living mobs it hits to be knocked back. Heavier objects can cause knockback at lower speeds.
 #define THROWNOBJ_KNOCKBACK_DIVISOR 2  // Affects how much speed the mob is knocked back with.
 
 #define PRESSURE_DAMAGE_COEFFICIENT 4 // The amount of pressure damage someone takes is equal to (pressure / HAZARD_HIGH_PRESSURE)*PRESSURE_DAMAGE_COEFFICIENT, with the maximum of MAX_PRESSURE_DAMAGE.

maps/exodus-1.dmm

@@ -5795,7 +5795,7 @@
 "chw" = (/obj/structure/sign/biohazard,/turf/simulated/wall,/area/medical/virologyaccess)
 "chx" = (/obj/structure/disposaloutlet,/obj/structure/disposalpipe/trunk{dir = 1},/turf/simulated/floor/plating/airless,/area/medical/virology)
 "chy" = (/obj/structure/bedsheetbin,/obj/structure/table,/obj/machinery/power/apc{dir = 8; name = "west bump"; pixel_x = -24},/obj/structure/cable/green,/obj/machinery/atmospherics/unary/vent_scrubber/on{dir = 1},/turf/simulated/floor{icon_state = "dark"},/area/medical/biostorage)
-"chz" = (/obj/structure/table,/obj/item/bodybag/cryobag{pixel_x = -3},/obj/item/bodybag/cryobag{pixel_x = -3},/obj/item/weapon/gun/projectile/syringe,/obj/item/weapon/storage/box/syringegun,/turf/simulated/floor{icon_state = "dark"},/area/medical/biostorage)
+"chz" = (/obj/structure/table,/obj/item/bodybag/cryobag{pixel_x = -3},/obj/item/bodybag/cryobag{pixel_x = -3},/obj/item/weapon/gun/launcher/syringe,/obj/item/weapon/storage/box/syringegun,/turf/simulated/floor{icon_state = "dark"},/area/medical/biostorage)
 "chA" = (/obj/effect/decal/cleanable/dirt,/turf/simulated/floor/plating,/area/maintenance/research_port)
 "chB" = (/turf/simulated/floor/plating,/area/maintenance/research_port)
 "chC" = (/obj/machinery/door/airlock/medical{autoclose = 0; icon_state = "door_open"; id_tag = "cubicle1"; name = "Cubicle 1"},/turf/simulated/floor{icon_state = "freezerfloor"},/area/medical/patient_wing)