Added the patch ai_area_selection.patch by both Stephen001 and Kurper

Code/ai_area_selection.dm

@@ -0,0 +1,36 @@
+/proc/get_area(area/A)
+	while(!istype(A, /area) && A)
+		A = A.loc
+	return A
+
+
+/var/const/INFINITY = 1e20 //close enough
+
+/turf/DblClick()
+	if(usr.stat || !istype(usr, /mob/ai))
+		return ..()
+	if (world.time <= usr:lastDblClick+2)
+		return ..()
+
+	//try to find the closest working camera in the same area, switch to it
+	var/area/A = get_area(src)
+	var/best_dist = INFINITY
+	var/best_cam = null
+	for(var/obj/machinery/camera/C in A)
+		if(usr:network != C.network)
+			continue // different network (syndicate)
+		if(C.z != usr.z)
+			continue // different viewing plane
+		if(!C.status)
+			continue // ignore disabled cameras
+		var/dist = get_dist(src, C)
+		if(dist < best_dist)
+			best_dist = dist
+			best_cam = C
+	
+	if(!best_cam)
+		return ..()
+	usr:lastDblClick = world.time
+	usr:current = best_cam
+	usr:reset_view(best_cam)
+	usr:cameraFollow = null

spacestation13.dme

@@ -6,7 +6,6 @@
 /*
 FILE: ss13h_new.dmp
 DIR: Code Code\Effects Code\Item Code\Item\Weapon Code\Machinery Code\Machinery\Computer
-UPDATE_OBJ_TREE: ON
 MAP_ICON_TYPE: 0
 AUTO_FILE_DIR: ON
 */
@@ -14,7 +13,6 @@ AUTO_FILE_DIR: ON
 // BEGIN_FILE_DIR
 #define FILE_DIR .
 #define FILE_DIR "Code"
-#define FILE_DIR "Code/Admin"
 #define FILE_DIR "Code/CTF"
 #define FILE_DIR "Code/Effects"
 #define FILE_DIR "Code/Item"
@@ -37,6 +35,7 @@ AUTO_FILE_DIR: ON
 #include "ss13h_new.dmp"
 #include "Code\!atoms.dm"
 #include "Code\aaaDefines.dm"
+#include "Code\ai_area_selection.dm"
 #include "Code\airtunnel.dm"
 #include "Code\areas.dm"
 #include "Code\blob.dm"