change a bit more code

meta:get_string isn't nil, and minetest. Swap node keeps meta l think

moremesecons_adjustable_player_detector/init.lua

@@ -27,9 +27,6 @@ local function object_detector_on_receive_fields(pos, formname, fields)
 	if r then
 		meta:set_int("radius", r)
 	end
-	if not meta:get_string("formspec") then
-		make_formspec(meta)
-	end
 end
 
 -- returns true if player was found, false if not
@@ -61,7 +58,7 @@ local object_detector_digiline = {
 				return
 			end
 			meta:set_string("scanname", msg)
-			if not meta:get_string("formspec") then
+			if meta:get_string("formspec") ~= "" then
 				make_formspec(meta)
 			end
 		end,
@@ -69,7 +66,7 @@ local object_detector_digiline = {
 }
 
 minetest.register_node("moremesecons_adjustable_player_detector:player_detector_off", {
-	tiles = {"default_steel_block.png", "default_steel_block.png", "moremesecons_player_detector_off.png", "moremesecons_player_detector_off.png", "moremesecons_player_detector_off.png", "moremesecons_player_detector_off.png"},
+	tiles = {"default_steel_block.png", "default_steel_block.png", "moremesecons_player_detector_off.png"},
 	paramtype = "light",
 	walkable = true,
 	groups = {cracky=3},
@@ -85,7 +82,7 @@ minetest.register_node("moremesecons_adjustable_player_detector:player_detector_
 })
 
 minetest.register_node("moremesecons_adjustable_player_detector:player_detector_on", {
-	tiles = {"default_steel_block.png", "default_steel_block.png", "moremesecons_player_detector_on.png", "moremesecons_player_detector_on.png", "moremesecons_player_detector_on.png", "moremesecons_player_detector_on.png"},
+	tiles = {"default_steel_block.png", "default_steel_block.png", "moremesecons_player_detector_on.png"},
 	paramtype = "light",
 	walkable = true,
 	groups = {cracky=3,not_in_creative_inventory=1},
@@ -108,8 +105,8 @@ minetest.register_craft({
 	}
 })
 
-minetest.register_abm(
+minetest.register_abm({
-	{nodenames = {"moremesecons_adjustable_player_detector:player_detector_off"},
+	nodenames = {"moremesecons_adjustable_player_detector:player_detector_off"},
 	interval = 1.0,
 	chance = 1,
 	action = function(pos)
@@ -120,8 +117,8 @@ minetest.register_abm(
 	end,
 })
 
-minetest.register_abm(
+minetest.register_abm({
-	{nodenames = {"moremesecons_adjustable_player_detector:player_detector_on"},
+	nodenames = {"moremesecons_adjustable_player_detector:player_detector_on"},
 	interval = 1.0,
 	chance = 1,
 	action = function(pos)

moremesecons_sayer/init.lua

@@ -1,38 +1,36 @@
 local MAX_DISTANCE = 8
 
-local sayer_activate = function(pos)
+local function sayer_activate(pos)
-	local players = minetest.get_connected_players()
+	local tab = {
-	local text = minetest.get_meta(pos):get_string("text")
+		"Sayer at pos",
-	for index, player in pairs(players) do
+		nil,
-		local distance = vector.distance(pos, player:getpos())
+		"says : "..minetest.get_meta(pos):get_string("text")
-		if distance <= MAX_DISTANCE then
+	}
-			minetest.chat_send_player(player:get_player_name(), "Sayer at pos "
+	for _,player in pairs(minetest.get_connected_players()) do
-						..tostring(pos.x)..","
+		if vector.distance(pos, player:getpos()) <= MAX_DISTANCE then
-						..tostring(pos.y)..","
+			tab[2] = minetest.pos_to_string(pos)
-						..tostring(pos.z)
+			minetest.chat_send_player(player:get_player_name(), table.concat(tab, " "))
-						.." says : "
-						..text)
 		end
 	end
 end
 
 minetest.register_node("moremesecons_sayer:sayer", {
 	description = "sayer",
-	tiles = {"mesecons_noteblock.png", "default_wood.png", "default_wood.png", "default_wood.png", "default_wood.png", "default_wood.png"},
+	tiles = {"mesecons_noteblock.png", "default_wood.png"},
 	drawtype = "nodebox",
 	paramtype = "light",
 	node_box = {
-			type = "fixed",
+		type = "fixed",
-			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-		},
+	},
 	groups = {dig_immediate = 2},
 	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
+   		minetest.get_meta(pos):set_string("formspec", "field[text;text;${text}]")
-   		meta:set_string("formspec", "field[text;text;${text}]")
 	end,
-	on_receive_fields = function(pos, formname, fields, sender)
+	on_receive_fields = function(pos, _, fields)
-		local meta = minetest.get_meta(pos)
+		if fields.text then
-		meta:set_string("text", fields.text)
+			minetest.get_meta(pos):set_string("text", fields.text)
+		end
 	end,
 	mesecons = {effector = {
 		action_on = sayer_activate

moremesecons_temporarygate/init.lua

@@ -16,18 +16,20 @@ end
 
 -- Functions that are called after the delay time
 
-local temporarygate_activate = function(pos, node)
+local function temporarygate_activate(pos, node)
-	local def = minetest.registered_nodes[node.name]
+	-- using a meta string allows writing the time in hexadecimals
-	local meta = minetest.get_meta(pos)
+	local time = tonumber(minetest.get_meta(pos):get_string("time"))
-	local time = tonumber(meta:get_string("time"))
+	if not time then
-	if time ~= nil then
+		return
-		minetest.swap_node(pos, {name = "moremesecons_temporarygate:temporarygate_on", param2 = node.param2})
-		mesecon.receptor_on(pos)
-		minetest.after(time, function(pos, node)
-			mesecon.receptor_off(pos)
-			minetest.swap_node(pos, {name = "moremesecons_temporarygate:temporarygate_off", param2 = node.param2})
-		end, pos, node)
 	end
+	node.name = "moremesecons_temporarygate:temporarygate_on"
+	minetest.swap_node(pos, node)
+	mesecon.receptor_on(pos)
+	minetest.after(time, function(pos, node)
+		mesecon.receptor_off(pos)
+		node.name = "moremesecons_temporarygate:temporarygate_off"
+		minetest.swap_node(pos, node)
+	end, pos, node)
 end
 
 boxes = {{ -6/16, -8/16, -6/16, 6/16, -7/16, 6/16 },		-- the main slab
@@ -62,12 +64,12 @@ mesecon.register_node("moremesecons_temporarygate:temporarygate", {
 	is_ground_content = true,
 	sounds = default.node_sound_stone_defaults(),
 	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
+   		minetest.get_meta(pos):set_string("formspec", "field[time;time;${time}]")
-   		meta:set_string("formspec", "field[time;time;${time}]")
 	end,
 	on_receive_fields = function(pos, formname, fields, sender)
-		local meta = minetest.get_meta(pos)
+		if fields.time then
-		meta:set_string("time", fields.time)
+			minetest.get_meta(pos):set_string("time", fields.time)
+		end
 	end
 },{
 		tiles = {