Fix regions not remembering their state and being unresettable

This fix means that wwe require minetest 5.2 as a minimum rather than 5.1
ref https://rubenwardy.com/minetest_modding_book/en/quality/common_mistakes.html#be-careful-when-storing-objectrefs-ie-players-or-entities

CHANGELOG.md

@@ -4,6 +4,9 @@ It's about time I started a changelog! This will serve from now on as the main c
 Note to self: See the bottom of this file for the release template text.
 
 
+## v1.14.3: The multipoint update, hotfix 3 (18th July 2023)
+- Fix regions not remembering their state and being unresettable
+
 ## v1.14.2: The multipoint update, hotfix 2 (15th July 2023)
 - Fix crash in `//subdivide`, again due to the new position system
 

modpack.conf

@@ -3,4 +3,4 @@ description = Extra tools and commands to extend WorldEdit. Currently has over 2
 
 depends = worldedit
 optional_depends = bonemeal,cool_trees,default,moretrees,ethereal
-min_minetest_version = 5.1
+min_minetest_version = 5.2

worldeditadditions_core/core/entities/pos_marker.lua

@@ -4,6 +4,13 @@ local EventEmitter = worldeditadditions_core.EventEmitter
 
 local anchor
 
+local function make_id()
+	return tostring(wea_c.get_ms_time()) .. "_" .. tostring(math.floor(math.random() * 1000000))
+end
+
+local last_reset = make_id()
+
+
 local WEAPositionMarker = {
 	initial_properties = {
 		visual = "cube",
@@ -11,7 +18,6 @@ local WEAPositionMarker = {
 		collisionbox = { -0.55, -0.55, -0.55, 0.55, 0.55, 0.55 },
 		physical = false,
 		collide_with_objects = false,
-		static_save = false,
 		
 		textures = {
 			"worldeditadditions_core_bg.png",
@@ -24,25 +30,55 @@ local WEAPositionMarker = {
 	},
 	
 	on_activate = function(self, staticdata)
-		-- noop
+		local data = minetest.parse_json(staticdata)
+		if type(data) ~= "table" or data.id ~= last_reset then
+			-- print("DEBUG:marker_wall/remove staticdata", staticdata, "last_reset", last_reset)
+			self.object:remove()
+			-- else
+			-- print("DEBUG:marker_wall/ok staticdata", staticdata, "type", type(staticdata), "last_reset", last_reset, "type", type(last_reset))
+			return
+		end
+		
+		self.__id = data.id
+		self.player_name = data.player_name
+		self.display_number = data.display_number
+		
+		anchor:emit("update_entity", {
+			entity = self.object,
+			id = self.__id,
+			player_name = self.player_name,
+			i = self.display_number
+		})
+		anchor.set_number(self.object, self.display_number)
 	end,
 	on_punch = function(self, _)
 		anchor.delete(self)
 	end,
 	on_blast = function(self, damage)
 		return false, false, {} -- Do not damage or knockback the player
+	end,
+	get_staticdata = function(self)
+		return minetest.write_json({
+			id = self.__id,
+			display_number = self.display_number,
+			player_name = self.player_name
+		})
 	end
 }
 
 minetest.register_entity(":worldeditadditions:position", WEAPositionMarker)
 
 local function create(player_name, pos, display_number)
-	local entity = minetest.add_entity(pos, "worldeditadditions:position")
+	local entity = minetest.add_entity(pos, "worldeditadditions:position", minetest.write_json({
+		id = last_reset,
+		display_number = display_number,
+		player_name = player_name
+	}))
 	
-	entity:get_luaentity().player_name = player_name
+	-- entity:get_luaentity().player_name = player_name
-	entity:get_luaentity().display_number = display_number
+	-- entity:get_luaentity().display_number = display_number
 	
-	anchor.set_number(entity, display_number)
+	-- anchor.set_number(entity, display_number)
 	
 	anchor:emit("create", {
 		player_name = player_name,
@@ -53,11 +89,13 @@ local function create(player_name, pos, display_number)
 end
 
 local function delete(entity)
-	if not entity.get_luaentity or not entity:get_luaentity() then return end -- Ensure the entity is still valid
+	if not entity or not entity.get_luaentity or not entity:get_luaentity() then return end -- Ensure the entity is still valid
 	
 	local player_name = entity:get_luaentity().player_name
 	local display_number = entity:get_luaentity().display_number
 	
+	last_reset = make_id()
+	
 	entity:remove()
 	
 	anchor:emit("delete", {

worldeditadditions_core/core/entities/pos_marker_wall.lua

@@ -7,7 +7,12 @@ local anchor
 local entity_wall_size = 10
 local collision_thickness = 0.2
 
-local last_reset = tostring(wea_c.get_ms_time())
+local function make_id()
+	return tostring(wea_c.get_ms_time()) .. "_" .. tostring(math.floor(math.random() * 1000000))
+end
+
+local last_reset = make_id()
+
 
 local WEAPositionMarkerWall = {
 	initial_properties = {
@@ -17,7 +22,6 @@ local WEAPositionMarkerWall = {
 		-- ^^ { xmin, ymin, zmin, xmax, ymax, zmax } relative to obj pos
 		physical = false,
 		collide_with_objects = false,
-		static_save = false,
 
 		textures = {
 			"worldeditadditions_core_marker_wall.png",
@@ -30,18 +34,37 @@ local WEAPositionMarkerWall = {
 	},
 
 	on_activate = function(self, staticdata)
-		if staticdata ~= last_reset then
+		local data = minetest.parse_json(staticdata)
-			-- print("DEBUG:marker_wall/remove staticdata", staticdata, "last_reset", last_reset)
+		if type(data) ~= "table" or data.id ~= last_reset then
 			self.object:remove()
-		-- else
+			return
-			-- print("DEBUG:marker_wall/ok staticdata", staticdata, "type", type(staticdata), "last_reset", last_reset, "type", type(last_reset))
 		end
+		
+		self.__id = data.id
+		self._size = Vector3.clone(data.size)
+		self._side = data.side
+		self.player_name = data.player_name
+		
+		anchor.__single_setup(self.object, self._size, self._side)
+		
+		anchor:emit("update_entity", {
+			entity = self.object,
+			player_name = self.player_name
+		})
 	end,
 	on_punch = function(self, _)
 		anchor.delete(self)
 	end,
 	on_blast = function(self, damage)
 		return false, false, {} -- Do not damage or knockback the player
+	end,
+	get_staticdata = function(self)
+		return minetest.write_json({
+			id = self.__id,
+			size = self._size,
+			side = self._side,
+			player_name = self.player_name
+		})
 	end
 }
 
@@ -109,12 +132,17 @@ local function create_single(player_name, pos1, pos2, side)
 	
 	
 	local pos_centre = ((pos2 - pos1) / 2) + pos1
-	local entity = minetest.add_entity(pos_centre, "worldeditadditions:marker_wall", last_reset)
+	local entity = minetest.add_entity(pos_centre, "worldeditadditions:marker_wall", minetest.write_json({
+		id = last_reset,
+		size = pos2 - pos1,
+		side = side,
+		player_name = player_name
+	}))
 	-- print("DEBUG:marker_wall create_single --> START player_name", player_name, "pos1", pos1, "pos2", pos2, "side", side, "SPAWN", pos_centre, "last_reset", last_reset)
 	
-	entity:get_luaentity().player_name = player_name
+	-- entity:get_luaentity().player_name = player_name
 	
-	single_setup(entity, pos2 - pos1, side)
+	-- single_setup(entity, pos2 - pos1, side)
 	
 	return entity
 end
@@ -438,7 +466,7 @@ local function delete(entitylist)
 		entity:remove()
 	end
 	
-	last_reset = tostring(wea_c.get_ms_time())
+	last_reset = make_id()
 	-- print("DEBUG:marker_wall delete --> LAST_RESET is now", last_reset, "type", type(last_reset))
 	
 	anchor:emit("delete", {
@@ -450,7 +478,8 @@ end
 
 anchor = EventEmitter.new({
 	create = create_wall,
-	delete = delete
+	delete = delete,
+	__single_setup = single_setup
 })
 
 return anchor

worldeditadditions_core/core/pos_marker_manage.lua

@@ -109,4 +109,12 @@ wea_c.pos:addEventListener("mark", function(event)
 			pos = pos
 		})
 	end
-end)
+end)
+
+
+wea_c.entities.pos_marker:addEventListener("update_entity", function(event)
+	wea_c.entities.pos_marker.delete(
+		position_entities[event.player_name][event.i]
+	)
+	position_entities[event.player_name][event.i] = event.entity
+end)

worldeditadditions_core/core/pos_marker_wall_manage.lua

@@ -53,6 +53,26 @@ local function do_update(event)
 end
 
 
+local function garbage_collect(player_name)
+	if not wall_entity_lists[player_name] then return end -- Nothing to do
+	
+	for i, entity in ipairs(wall_entity_lists[player_name]) do
+		if not entity:get_pos() then
+			table.remove(wall_entity_lists[player_name], i)
+		end
+	end
+end
+
+local function update_entity(event)
+	print("DEBUG:pos_marker_wall_manage UPDATE_ENTITY event", weac.inspect(event))
+	garbage_collect(event.player_name)
+	
+	ensure_player(event.player_name)
+	table.insert(
+		wall_entity_lists[event.player_name],
+		event.entity
+	)
+end
 
 local function needs_update(event)
 	if event.i > 2 then
@@ -73,3 +93,5 @@ weac.pos:addEventListener("clear", do_delete)
 
 weac.pos:addEventListener("unmark", do_delete)
 weac.pos:addEventListener("mark", do_update)
+
+weac.entities.pos_marker_wall:addEventListener("update_entity", update_entity)