pos_marker_wall: add support for customising sides displayed

...it's not exposed in the UI yet tho.

worldeditadditions_core/core/entities/pos_marker_wall.lua

@@ -117,8 +117,14 @@ end
 -- @param	player_name			string	The name of the player that the wall belongs to.
 -- @param	pos1				Vector3	pos1 of the defined region.
 -- @param	pos2				Vector3	pos2 of the defined region.
+-- @param	sides_to_display	string	The sides of the marker wall that should actually be displayed, squished together into a single string. Defaults to "+x-x+z-z". Use "+x-x+z-z+y-y" to display all sides; add and remove sides as desired.
 -- @returns	table<entitylist>	A list of all created entities.
-local function create_wall(player_name, pos1, pos2)
+local function create_wall(player_name, pos1, pos2, sides_to_display)
+	if not sides_to_display then
+		sides_to_display = "+x-x+z-z" -- this matches WorldEdit
+		-- To display all of them:
+		-- sides_to_display = "+x-x+z-z+y-y"
+	end
 	print("DEBUG:marker_wall create_wall --> START player_name", player_name, "pos1", pos1, "pos2", pos2)
 	local pos1s, pos2s = Vector3.sort(pos1, pos2)
 	
@@ -139,6 +145,7 @@ local function create_wall(player_name, pos1, pos2)
 	--   ██   ██ ██
 	--       ██   ██
 	-- First, do positive x
+	if string.find(sides_to_display, "+x") then
 		local posx_pos1 = Vector3.new(
 			math.max(pos1s.x, pos2s.x) + 0.5,
 			math.min(pos1s.y, pos2s.y) - 0.5,
@@ -173,6 +180,8 @@ local function create_wall(player_name, pos1, pos2)
 			end
 		end
 		
+	end
+	
 	
 	--       ██   ██
 	--        ██ ██
@@ -180,6 +189,7 @@ local function create_wall(player_name, pos1, pos2)
 	--        ██ ██
 	--       ██   ██
 	-- Now, do negative x
+	if string.find(sides_to_display, "-x") then
 		local negx_pos1 = Vector3.new(
 			math.min(pos1s.x, pos2s.x) - 0.5,
 			math.min(pos1s.y, pos2s.y) - 0.5,
@@ -213,6 +223,7 @@ local function create_wall(player_name, pos1, pos2)
 			end
 		end
 	
+	end
 	
 	
 	--       ██    ██
@@ -221,6 +232,7 @@ local function create_wall(player_name, pos1, pos2)
 	--   ██     ██   
 	--          ██   
 	-- Now, positive y
+	if string.find(sides_to_display, "+y") then
 		local posy_pos1 = Vector3.new(
 			math.min(pos1s.x, pos2s.x) - 0.5,
 			math.max(pos1s.y, pos2s.y) + 0.5,
@@ -255,12 +267,15 @@ local function create_wall(player_name, pos1, pos2)
 			end
 		end
 		
+	end
+	
 	--       ██    ██
 	--        ██  ██
 	-- ██████  ████
 	--          ██
 	--          ██
 	-- Now, negative y
+	if string.find(sides_to_display, "-y") then
 		local negy_pos1 = Vector3.new(
 			math.min(pos1s.x, pos2s.x) - 0.5,
 			math.min(pos1s.y, pos2s.y) - 0.5,
@@ -295,12 +310,15 @@ local function create_wall(player_name, pos1, pos2)
 			end
 		end
 		
+	end
+	
 	--       ███████
 	--   ██     ███ 
 	-- ██████  ███  
 	--   ██   ███   
 	--       ███████
 	-- Now, positive z. Almost there!
+	if string.find(sides_to_display, "+z") then
 		local posz_pos1 = Vector3.new(
 			math.min(pos1s.x, pos2s.x) - 0.5,
 			math.min(pos1s.y, pos2s.y) - 0.5,
@@ -334,12 +352,17 @@ local function create_wall(player_name, pos1, pos2)
 				table.insert(entities, entity)
 			end
 		end
+		
+	end
+	
+	
 	--       ███████
 	--          ███
 	-- ██████  ███
 	--        ███
 	--       ███████
 	-- Finally, negative z. Last one!
+	if string.find(sides_to_display, "-z") then
 		local negz_pos1 = Vector3.new(
 			math.min(pos1s.x, pos2s.x) - 0.5,
 			math.min(pos1s.y, pos2s.y) - 0.5,
@@ -374,6 +397,7 @@ local function create_wall(player_name, pos1, pos2)
 			end
 		end
 		
+	end
 	
 	
 	-- TODO: All the other sides. For testing we're doing 1 side for now, so we can vaoid having to do everything all over again if we make a mistake.