fix wrong priv

and regenerate all sign entities in loaded map
(uses LBM to log all loaded blocks,
but only those with nodes in "group:sign").

api.lua

@@ -18,8 +18,8 @@ signs_lib.standard_xoffs = 4
 signs_lib.standard_yoffs = 2
 signs_lib.standard_cpl = 35
 
-signs_lib.standard_wood_groups =  {choppy = 2, flammable = 2, oddly_breakable_by_hand = 3}
-signs_lib.standard_steel_groups = {cracky = 2, oddly_breakable_by_hand = 3} 
+signs_lib.standard_wood_groups =  {sign = 1, choppy = 2, flammable = 2, oddly_breakable_by_hand = 3}
+signs_lib.standard_steel_groups = {sign = 1, cracky = 2, oddly_breakable_by_hand = 3} 
 
 signs_lib.standard_yaw = {
 	0,
@@ -694,3 +694,71 @@ minetest.register_lbm({
 		end
 	end
 })
+
+signs_lib.block_list = {}
+signs_lib.totalblocks = 0
+
+-- Maintain a list of currently-loaded blocks
+minetest.register_lbm({
+	nodenames = {"group:sign"},
+	name = "signs_lib:update_block_list",
+	label = "Update list of loaded blocks, log only those with signs",
+	run_at_every_load = true,
+	action = function(pos, node)
+		-- yeah, yeah... I know I'm hashing a block pos, but it's still just a set of coords
+		local hash = minetest.hash_node_position(vector.floor(vector.divide(pos, core.MAP_BLOCKSIZE)))
+		if not signs_lib.block_list[hash] then
+			signs_lib.block_list[hash] = true
+			signs_lib.totalblocks = signs_lib.totalblocks + 1
+		end
+	end
+})
+
+minetest.register_chatcommand("regen_signs", {
+	params = "",
+	privs = {server = true},
+	description = "Skims through all currently-loaded sign-bearing mapblocks, clears away any entities within each sign's node space, and regenerates their text entities, if any.",
+	func = function(player_name, params)
+		local allsigns = {}
+		local totalsigns = 0
+		for b in pairs(signs_lib.block_list) do
+			local blockpos = minetest.get_position_from_hash(b)
+			local pos1 = vector.multiply(blockpos, core.MAP_BLOCKSIZE)
+			local pos2 = vector.add(pos1, core.MAP_BLOCKSIZE - 1)
+			if minetest.get_node_or_nil(vector.add(pos1, core.MAP_BLOCKSIZE/2)) then
+				local signs_in_block = minetest.find_nodes_in_area(pos1, pos2, {"group:sign"})
+				allsigns[#allsigns + 1] = signs_in_block
+				totalsigns = totalsigns + #signs_in_block
+			else
+				signs_lib.block_list[b] = nil -- if the block is no longer loaded, remove it from the table
+				signs_lib.totalblocks = signs_lib.totalblocks - 1
+			end
+		end
+		if signs_lib.totalblocks < 0 then signs_lib.totalblocks = 0 end
+		if totalsigns == 0 then
+			minetest.chat_send_player(player_name, "There are no signs in the currently-loaded terrain.")
+			signs_lib.block_list = {}
+			return
+		end
+
+		minetest.chat_send_player(player_name, "Found a total of "..totalsigns.." sign nodes across "..signs_lib.totalblocks.." blocks.")
+		minetest.chat_send_player(player_name, "Regenerating sign entities...")
+
+		for _, b in pairs(allsigns) do
+			for _, pos in ipairs(b) do
+				local objects = minetest.get_objects_inside_radius(pos, 0.5)
+				if #objects > 0 then
+					for _, v in ipairs(objects) do
+						v:remove()
+					end
+				end
+				local node = minetest.get_node(pos)
+				local def = minetest.registered_items[node.name]
+				if def and def.entity_info then
+					signs_lib.update_sign(pos)
+				end
+			end
+		end
+		minetest.chat_send_player(player_name, "Finished.")
+	end
+})

models/signs_lib_standard_wall_sign_facedir.obj

@@ -1,6 +1,6 @@
-# Blender v2.79 (sub 0) OBJ File: 'basic_signs wooden wall sign.blend'
+# Blender v2.79 (sub 0) OBJ File: 'basic_signs wooden sign.blend'
 # www.blender.org
-o Cube.008_Cube
+o sign_(3)_Cube
 v 0.437500 -0.312500 0.500000
 v 0.437500 -0.312500 0.437500
 v 0.437500 0.312500 0.500000
@@ -41,11 +41,11 @@ vn 0.0000 -1.0000 0.0000
 vn 0.0000 1.0000 0.0000
 vn 1.0000 0.0000 0.0000
 vn -1.0000 0.0000 0.0000
-g Cube.008_Cube_front-back
+g sign_(3)_Cube_front-back
 s off
 f 8/1/1 4/2/1 2/3/1 6/4/1
 f 3/5/2 7/6/2 5/7/2 1/8/2
-g Cube.008_Cube_edges
+g sign_(3)_Cube_edges
 f 13/9/3 14/10/3 10/11/3 9/12/3
 f 11/13/4 12/14/4 16/15/4 15/16/4
 f 11/13/5 9/17/5 10/18/5 12/14/5

models/signs_lib_standard_wall_sign_facedir_onpole.obj

@@ -1,6 +1,22 @@
-# Blender v2.79 (sub 0) OBJ File: 'basic_signs wooden wall sign.blend'
+# Blender v2.79 (sub 0) OBJ File: 'basic_signs wooden sign.blend'
 # www.blender.org
-o Cube.009_Cube.001
+o sign_on_pole.001_Cube.002
+v 0.437500 -0.312500 0.812500
+v 0.437500 -0.312500 0.750000
+v 0.437500 0.312500 0.812500
+v 0.437500 0.312500 0.750000
+v -0.437500 -0.312500 0.812500
+v -0.437500 -0.312500 0.750000
+v -0.437500 0.312500 0.812500
+v -0.437500 0.312500 0.750000
+v 0.437500 -0.312500 0.812500
+v 0.437500 -0.312500 0.750000
+v 0.437500 0.312500 0.812500
+v 0.437500 0.312500 0.750000
+v -0.437500 -0.312500 0.812500
+v -0.437500 -0.312500 0.750000
+v -0.437500 0.312500 0.812500
+v -0.437500 0.312500 0.750000
 v -0.125000 -0.187500 0.812500
 v -0.125000 -0.187500 0.875000
 v -0.125000 0.187500 0.812500
@@ -57,6 +73,24 @@ v -0.164063 0.125000 1.125000
 v 0.164062 0.125000 1.125000
 v -0.164063 0.187500 1.125000
 v 0.164062 0.187500 1.125000
+vt 0.468750 0.812500
+vt 0.031250 0.812500
+vt 0.031250 0.187500
+vt 0.468750 0.187500
+vt 0.531250 0.812500
+vt 0.968750 0.812500
+vt 0.968750 0.187500
+vt 0.531250 0.187500
+vt 0.234375 0.000000
+vt 0.234375 1.000000
+vt 0.015625 1.000000
+vt 0.015625 -0.000000
+vt 0.609375 -0.000000
+vt 0.609375 1.000000
+vt 0.390625 1.000000
+vt 0.390625 -0.000000
+vt 0.765625 0.000000
+vt 0.765625 1.000000
 vt 0.843750 0.507812
 vt 0.703125 0.507812
 vt 0.703125 0.093750
@@ -161,94 +195,52 @@ vt 0.453125 0.640625
 vt 0.453125 0.593750
 vt 0.312500 0.593750
 vt 0.312500 0.640625
-vn -1.0000 0.0000 0.0000
-vn 1.0000 0.0000 0.0000
-vn 0.0000 1.0000 0.0000
-vn 0.0000 -1.0000 -0.0000
-vn 0.0000 -0.0000 1.0000
-vn 0.0000 0.0000 -1.0000
-g Cube.009_Cube.001_pole_mount
-s off
-f 1/1/1 2/2/1 4/3/1 3/4/1
-f 6/5/2 5/6/2 8/7/2 7/8/2
-f 4/3/3 8/7/3 5/9/3 3/10/3
-f 1/11/4 6/12/4 7/8/4 2/2/4
-f 2/2/5 7/8/5 8/7/5 4/3/5
-f 9/13/2 10/14/2 12/15/2 11/16/2
-f 11/17/3 12/18/3 16/19/3 15/20/3
-f 15/21/1 16/22/1 14/23/1 13/24/1
-f 13/24/4 14/23/4 10/25/4 9/26/4
-f 17/27/2 18/28/2 20/29/2 19/30/2
-f 19/31/3 20/32/3 24/33/3 23/34/3
-f 23/35/1 24/36/1 22/37/1 21/38/1
-f 21/38/4 22/37/4 18/39/4 17/40/4
-f 25/41/2 26/42/2 28/43/2 27/44/2
-f 27/45/3 28/46/3 32/47/3 31/48/3
-f 31/49/1 32/50/1 30/51/1 29/52/1
-f 29/52/4 30/51/4 26/53/4 25/54/4
-f 33/55/2 34/56/2 36/57/2 35/58/2
-f 35/59/3 36/60/3 40/61/3 39/62/3
-f 39/63/1 40/64/1 38/65/1 37/66/1
-f 37/66/4 38/65/4 34/67/4 33/68/4
-f 41/69/5 42/70/5 44/71/5 43/72/5
-f 43/73/3 44/74/3 48/75/3 47/76/3
-f 47/76/6 48/75/6 46/77/6 45/78/6
-f 45/78/4 46/77/4 42/70/4 41/69/4
-f 43/79/1 47/80/1 45/81/1 41/82/1
-f 48/83/2 44/84/2 42/85/2 46/86/2
-f 49/87/5 50/88/5 52/89/5 51/90/5
-f 51/91/3 52/92/3 56/93/3 55/94/3
-f 55/94/6 56/93/6 54/95/6 53/96/6
-f 53/96/4 54/95/4 50/88/4 49/87/4
-f 51/97/1 55/98/1 53/99/1 49/100/1
-f 56/101/2 52/102/2 50/103/2 54/104/2
-o Cube.004_Cube
-v 0.437500 -0.312500 0.812500
-v 0.437500 -0.312500 0.750000
-v 0.437500 0.312500 0.812500
-v 0.437500 0.312500 0.750000
-v -0.437500 -0.312500 0.812500
-v -0.437500 -0.312500 0.750000
-v -0.437500 0.312500 0.812500
-v -0.437500 0.312500 0.750000
-v 0.437500 -0.312500 0.812500
-v 0.437500 -0.312500 0.750000
-v 0.437500 0.312500 0.812500
-v 0.437500 0.312500 0.750000
-v -0.437500 -0.312500 0.812500
-v -0.437500 -0.312500 0.750000
-v -0.437500 0.312500 0.812500
-v -0.437500 0.312500 0.750000
-vt 0.468750 0.812500
-vt 0.031250 0.812500
-vt 0.031250 0.187500
-vt 0.468750 0.187500
-vt 0.531250 0.812500
-vt 0.968750 0.812500
-vt 0.968750 0.187500
-vt 0.531250 0.187500
-vt 0.234375 0.000000
-vt 0.234375 1.000000
-vt 0.015625 1.000000
-vt 0.015625 -0.000000
-vt 0.609375 -0.000000
-vt 0.609375 1.000000
-vt 0.390625 1.000000
-vt 0.390625 -0.000000
-vt 0.765625 0.000000
-vt 0.765625 1.000000
 vn 0.0000 0.0000 -1.0000
 vn 0.0000 0.0000 1.0000
 vn 0.0000 -1.0000 0.0000
 vn 0.0000 1.0000 0.0000
 vn 1.0000 0.0000 0.0000
 vn -1.0000 0.0000 0.0000
-g Cube.004_Cube_front-back
+g sign_on_pole.001_Cube.002_front-back
 s off
-f 64/105/7 60/106/7 58/107/7 62/108/7
-f 59/109/8 63/110/8 61/111/8 57/112/8
-g Cube.004_Cube_edges
-f 69/113/9 70/114/9 66/115/9 65/116/9
-f 67/117/10 68/118/10 72/119/10 71/120/10
-f 67/117/11 65/121/11 66/122/11 68/118/11
-f 69/113/12 71/120/12 72/119/12 70/114/12
+f 8/1/1 4/2/1 2/3/1 6/4/1
+f 3/5/2 7/6/2 5/7/2 1/8/2
+g sign_on_pole.001_Cube.002_edges
+f 13/9/3 14/10/3 10/11/3 9/12/3
+f 11/13/4 12/14/4 16/15/4 15/16/4
+f 11/13/5 9/17/5 10/18/5 12/14/5
+f 13/9/6 15/16/6 16/15/6 14/10/6
+g sign_on_pole.001_Cube.002_pole_mount
+f 17/19/6 18/20/6 20/21/6 19/22/6
+f 22/23/5 21/24/5 24/25/5 23/26/5
+f 20/21/4 24/25/4 21/27/4 19/28/4
+f 17/29/3 22/30/3 23/26/3 18/20/3
+f 18/20/2 23/26/2 24/25/2 20/21/2
+f 25/31/5 26/32/5 28/33/5 27/34/5
+f 27/35/4 28/36/4 32/37/4 31/38/4
+f 31/39/6 32/40/6 30/41/6 29/42/6
+f 29/42/3 30/41/3 26/43/3 25/44/3
+f 33/45/5 34/46/5 36/47/5 35/48/5
+f 35/49/4 36/50/4 40/51/4 39/52/4
+f 39/53/6 40/54/6 38/55/6 37/56/6
+f 37/56/3 38/55/3 34/57/3 33/58/3
+f 41/59/5 42/60/5 44/61/5 43/62/5
+f 43/63/4 44/64/4 48/65/4 47/66/4
+f 47/67/6 48/68/6 46/69/6 45/70/6
+f 45/70/3 46/69/3 42/71/3 41/72/3
+f 49/73/5 50/74/5 52/75/5 51/76/5
+f 51/77/4 52/78/4 56/79/4 55/80/4
+f 55/81/6 56/82/6 54/83/6 53/84/6
+f 53/84/3 54/83/3 50/85/3 49/86/3
+f 57/87/2 58/88/2 60/89/2 59/90/2
+f 59/91/4 60/92/4 64/93/4 63/94/4
+f 63/94/1 64/93/1 62/95/1 61/96/1
+f 61/96/3 62/95/3 58/88/3 57/87/3
+f 59/97/6 63/98/6 61/99/6 57/100/6
+f 64/101/5 60/102/5 58/103/5 62/104/5
+f 65/105/2 66/106/2 68/107/2 67/108/2
+f 67/109/4 68/110/4 72/111/4 71/112/4
+f 71/112/1 72/111/1 70/113/1 69/114/1
+f 69/114/3 70/113/3 66/106/3 65/105/3
+f 67/115/6 71/116/6 69/117/6 65/118/6
+f 72/119/5 68/120/5 66/121/5 70/122/5