Adds Watchtowers

code/__DEFINES/traits.dm

@@ -509,3 +509,6 @@ GLOBAL_LIST(trait_name_map)
 #define HACKED_TRAIT "hacked"
 /// traits from chloroform usage
 #define CHLOROFORM_TRAIT "chloroform"
+
+// from watchtower.dm
+#define TRAIT_ON_WATCHTOWER "on_watchtower"

code/datums/elements/bullet_trait/direct_only.dm

@@ -0,0 +1,42 @@
+// This trait makes the projectile only hit targets directly clicked 
+
+/datum/element/bullet_trait_direct_only
+	// General bullet trait vars
+	element_flags = ELEMENT_DETACH|ELEMENT_BESPOKE
+	id_arg_index = 2
+
+/datum/element/bullet_trait_direct_only/Attach(datum/target)
+	. = ..()
+	if(!istype(target, /obj/projectile))
+		return ELEMENT_INCOMPATIBLE
+
+	RegisterSignal(target, COMSIG_BULLET_CHECK_MOB_SKIPPING, PROC_REF(check_distance))
+
+/datum/element/bullet_trait_direct_only/Detach(datum/target)
+	UnregisterSignal(target, COMSIG_BULLET_CHECK_MOB_SKIPPING)
+
+	return ..()
+
+/datum/element/bullet_trait_direct_only/proc/check_distance(obj/projectile/P, mob/living/carbon/human/projectile_target)
+	SIGNAL_HANDLER
+
+	if(P.original != projectile_target)
+		return COMPONENT_SKIP_MOB
+
+/datum/element/bullet_trait_direct_only/watchtower
+
+/datum/element/bullet_trait_direct_only/watchtower/check_distance(obj/projectile/P, mob/living/carbon/human/projectile_target)
+	if(!HAS_TRAIT(P.firer, TRAIT_ON_WATCHTOWER))
+		if(!istype(P.firer, /mob))
+			return
+		var/mob/firer = P.firer
+		var/obj/item/weapon/gun/gun = firer.get_inactive_hand()
+		if(istype(gun))
+			gun.remove_bullet_traits(list("watchtower_arc"))
+
+		gun = firer.get_active_hand()
+		if(istype(gun))
+			gun.remove_bullet_traits(list("watchtower_arc"))
+		return
+
+	return ..()

code/game/objects/structures/girders.dm

@@ -176,6 +176,33 @@
 		if(STATE_REINFORCED_WALL)
 			return do_reinforced_wall(W, user)
 		if(STATE_DISPLACED)
+			if(HAS_TRAIT(W, TRAIT_TOOL_BLOWTORCH))
+				var/area/area = get_area(src)
+				if(CEILING_IS_PROTECTED(area.ceiling, CEILING_GLASS))
+					to_chat(user, SPAN_WARNING("Watchtowers can only be built in the open."))
+					return
+
+				var/list/turf/turfs = CORNER_BLOCK(get_turf(src), 2, 2)
+				var/list/obj/structure/girder/girders = list()
+
+				for(var/turf/current_turf in turfs)
+					var/found_girder = FALSE
+					for(var/obj/structure/girder/girder in current_turf)
+						if(girder.state == STATE_DISPLACED)
+							found_girder = TRUE
+							girders += girder
+					if(!found_girder)
+						return
+
+
+				if(!do_after(user,30, INTERRUPT_ALL|BEHAVIOR_IMMOBILE, BUSY_ICON_BUILD))
+					return
+
+				new /obj/structure/watchtower(loc)
+
+				for(var/list/obj/structure/girder as anything in girders)
+					qdel(girder)
+
 			if(HAS_TRAIT(W, TRAIT_TOOL_CROWBAR))
 				var/turf/open/floor = loc
 				if(!floor.allow_construction)
@@ -393,6 +420,13 @@
 	anchored = FALSE
 	state = STATE_DISPLACED
 
+/obj/structure/girder/broken
+	health = 0
+	icon_state = "girder_damaged"
+	anchored = FALSE
+	density = FALSE
+	state = STATE_STANDARD
+
 /obj/structure/girder/reinforced
 	icon_state = "reinforced"
 	health = 500

code/modules/movement/movement.dm

@@ -56,18 +56,19 @@
 	return NO_BLOCKED_MOVEMENT
 
 /atom/movable/Move(NewLoc, direct)
-	// If Move is not valid, exit
-	if (SEND_SIGNAL(src, COMSIG_MOVABLE_PRE_MOVE, NewLoc) & COMPONENT_CANCEL_MOVE)
-		return FALSE
-
 	var/atom/oldloc = loc
 	var/old_dir = dir
 
-	. = ..()
 	if (flags_atom & DIRLOCK)
 		setDir(old_dir)
 	else if(old_dir != direct)
 		setDir(direct)
+
+	// If Move is not valid, exit
+	if (SEND_SIGNAL(src, COMSIG_MOVABLE_PRE_MOVE, NewLoc) & COMPONENT_CANCEL_MOVE)
+		return FALSE
+
+	. = ..()
 	l_move_time = world.time
 	if ((oldloc != loc && oldloc && oldloc.z == z))
 		last_move_dir = get_dir(oldloc, loc)

code/modules/watchtower/blockers.dm

@@ -0,0 +1,45 @@
+/// Invisible Blocker Walls, they link up with the watchtower and collapse with it
+/obj/structure/blocker/watchtower
+	name = "Watchtower Blocker"
+	icon = 'icons/obj/structures/barricades.dmi'
+	icon_state = "folding_0" // for map editing only
+	flags_atom = ON_BORDER
+	invisibility = INVISIBILITY_MAXIMUM
+	density = TRUE
+	opacity = FALSE // Unfortunately this doesn't behave as we'd want with ON_BORDER so we can't make tent opaque
+	throwpass = TRUE // Needs this so xenos can attack through the blocker and hit the tents or people inside
+	/// The watchtower this blocker relates to, will be destroyed along with it
+	var/obj/structure/watchtower/linked_watchtower
+
+/obj/structure/blocker/watchtower/Initialize(mapload, ...)
+	. = ..()
+	icon_state = null
+	linked_watchtower = locate(/obj/structure/watchtower) in loc
+	if(!linked_watchtower)
+		return INITIALIZE_HINT_QDEL
+	RegisterSignal(linked_watchtower, COMSIG_PARENT_QDELETING, PROC_REF(collapse))
+
+/obj/structure/blocker/watchtower/Destroy(force)
+	. = ..()
+	linked_watchtower = null
+
+/obj/structure/blocker/watchtower/proc/collapse()
+	SIGNAL_HANDLER
+	qdel(src)
+
+/obj/structure/blocker/watchtower/initialize_pass_flags(datum/pass_flags_container/PF)
+	..()
+	if (PF)
+		PF.flags_can_pass_all = NONE
+		PF.flags_can_pass_front = NONE
+		PF.flags_can_pass_behind = NONE
+
+/obj/structure/blocker/watchtower/get_projectile_hit_boolean(obj/projectile/P)
+	. = ..()
+	return FALSE // Always fly through the watchtower
+
+//Blocks all direction, basically an invisible wall
+/obj/structure/blocker/watchtower/full_tile
+	flags_atom = NO_FLAGS
+	icon = 'icons/landmarks.dmi'
+	icon_state = "invisible_wall"