Merge branch 'walking_light' of emorrp1/ocd3 into master

diff/walking_light.diff/init.lua

@@ -0,0 +1,685 @@
+-- list of all players seen by minetest.register_on_joinplayer
+local players = {}
+-- all player positions last time light was updated: {player_name : {x, y, z}}
+local player_positions = {}
+-- all light positions of light that currently is created {player_name : {i: {x, y, z}}
+local light_positions = {}
+-- last item seen wielded by players
+local last_wielded = {}
+
+-- toggles debug mode
+local walking_light_debug = false
+-- name of light node, changed by toggling debug mode
+local walking_light_node = nil
+
+-- initialize walking light
+walking_light = {}
+
+-- list of items that use walking light
+local light_items = {
+	"default:torch",
+	"walking_light:helmet_diamond", "walking_light:megatorch"
+}
+
+function walking_light.addLightItem(item)
+	for I in pairs(light_items) do
+		if item == light_items[I] then
+			minetest.log("warning", "[walking_light] \"" .. item .. "\" is already light item.")
+			return
+		end
+	end
+	
+	table.insert(light_items, -1, item)
+end
+
+function walking_light.getLightItems()
+	return light_items
+end
+
+function walking_light.register_tool(tool)
+	item = 'walking_light:' .. tool .. '_mese'
+	default = 'default:' .. tool .. '_mese'
+
+	definition = table.copy(minetest.registered_items[default])
+	definition.description = definition.description .. ' with light'
+	definition.inventory_image = 'walking_light_mese' .. tool .. '.png'
+
+	minetest.register_tool(item, definition)
+	minetest.register_craft({
+		output = item,
+		recipe = {
+			{'default:torch'},
+			{ default },
+		}
+	})
+
+	walking_light.addLightItem(item)
+end
+
+-- from http://lua-users.org/wiki/IteratorsTutorial
+-- useful for removing things from a table because removing from the middle makes it skip elements otherwise
+function ripairs(t)
+  local function ripairs_it(t,i)
+    i=i-1
+    local v=t[i]
+    if v==nil then return v end
+    return i,v
+  end
+  return ripairs_it, t, #t+1
+end
+
+-- formats a vector with shorter output than dump
+local function dumppos(pos)
+	if pos == nil then
+		return "nil"
+	end
+	local x = "nil"
+	if pos.x then
+		x = pos.x
+	end
+	local y = "nil"
+	if pos.y then
+		y = pos.y
+	end
+	local z = "nil"
+	if pos.z then
+		z = pos.z
+	end
+
+	return "(" .. x .. "," .. y .. "," .. z .. ")"
+end
+
+-- formats a table containing vectors with shorter output than dump
+local function dumppostable(t)
+	if t == nil then
+		return "nil"
+	end
+	if #t == 0 then
+		return "0{}"
+	end
+
+	ret = #t .. "{\n"
+	for i,pos in ipairs(t) do
+		ret = ret .. "    " .. dumppos(pos) .. "\n"
+	end
+	ret = ret .. "}"
+	return ret
+end
+
+function mt_get_node_or_nil(pos)
+	if pos == nil then
+		print("ERROR: walking_light.mt_get_node_or_nil(), pos is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	return minetest.get_node_or_nil(pos)
+end
+
+function mt_add_node(pos, sometable)
+	if pos == nil then
+		print("ERROR: walking_light.mt_add_node(), pos is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	if sometable == nil then
+		print("ERROR: walking_light.mt_add_node(), sometable is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	minetest.add_node(pos,sometable)
+end
+
+function round(num) 
+	return math.floor(num + 0.5) 
+end
+
+local function poseq(pos1, pos2)
+	if pos1 == nil and pos2 == nil then
+		return true
+	end
+	if pos1 == nil or pos2 == nil then
+		return false
+	end
+	return pos1.x == pos2.x and pos1.y == pos2.y and pos1.z == pos2.z
+end
+
+-- return true if the player moved since last player_positions update
+local function player_moved(player)
+	local player_name = player:get_player_name()
+	local pos = player:getpos()
+	local rounded_pos = vector.round(pos)
+	local oldpos = player_positions[player_name]
+	if oldpos == nil or not poseq(rounded_pos, oldpos) then
+		-- if oldpos is nil, we assume they just logged in, so consider them moved
+--		print("DEBUG: walking_light, player_moved(); moved = true; rounded_pos = " .. dumppos(rounded_pos) .. ", oldpos = " .. dumppos(oldpos))
+		return true
+	end
+--	print("DEBUG: walking_light, player_moved(); moved = false; rounded_pos = " .. dumppos(rounded_pos) .. ", oldpos = " .. dumppos(oldpos))
+	return false
+end
+
+-- same as table.remove(t,remove_pos), but uses poseq instead of comparing references (does lua have comparator support, so this isn't needed?)
+local function table_remove_pos(t, remove_pos)
+--	local DEBUG_oldsize = #t
+
+	for i,pos in ipairs(t) do
+		if poseq(pos, remove_pos) then
+			table.remove(t, i)
+			break
+		end
+	end
+
+--	local DEBUG_newsize = #t
+--	print("DEBUG: walking_light.table_remove_pos(), oldsize = " .. DEBUG_oldsize .. ", newsize = " .. DEBUG_newsize)
+end
+
+-- same as t[remove_pos], but uses poseq instead of comparing references (does lua have comparator support, so this isn't needed?)
+local function table_contains_pos(t, remove_pos)
+	for i,pos in ipairs(t) do
+		if poseq(pos, remove_pos) then
+			return true
+		end
+	end
+	return false
+end
+
+-- same as table.insert(t,pos) but makes sure it is not duplicated
+local function table_insert_pos(t, pos)
+	if not table_contains_pos( pos ) then
+		table.insert(t, pos)
+	end
+end
+
+local function is_light(node)
+	if node ~= nil and ( node.name == "walking_light:light" or node.name == "walking_light:light_debug" ) then
+		return true
+	end
+	return false
+end
+    
+-- removes light at the given position
+-- player is optional
+local function remove_light(player, pos)
+	local player_name
+	if player then
+		player_name = player:get_player_name()
+	end
+	local node = mt_get_node_or_nil(pos)
+	if is_light(node) then
+		mt_add_node(pos,{type="node",name="air"})
+		if player_name then
+			table_remove_pos(light_positions[player_name], pos)
+		end
+	else
+		if node ~= nil then
+			print("WARNING: walking_light.remove_light(), pos = " .. dumppos(pos) .. ", tried to remove light but node was " .. node.name)
+			table_remove_pos(light_positions[player_name], pos)
+		else
+			print("WARNING: walking_light.remove_light(), pos = " .. dumppos(pos) .. ", tried to remove light but node was nil")
+		end
+	end
+end
+
+-- removes all light owned by a player
+local function remove_light_player(player)
+	local player_name = player:get_player_name()
+
+    for i,old_pos in ripairs(light_positions[player_name]) do
+		if old_pos then
+--			print("DEBUG: walking_light.remove_light_player(), removing old light; old_pos = " .. dumppos(old_pos))
+			remove_light(player, old_pos)
+		end
+	end
+--	print("DEBUG: walking_light.remove_light_player(), done; light_positions = " .. dumppostable(light_positions[player_name]))
+end
+
+local function can_add_light(pos)
+	local node  = mt_get_node_or_nil(pos)
+	if node == nil or node.name == "air" then
+--		print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", true")
+		return true
+	elseif is_light(node) then
+--		print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", true")
+		return true
+	end
+--	print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", false")
+	return false
+end
+
+-- old function returns pos instead of table, for only one position
+local function pick_light_position_regular(player, pos)
+	if can_add_light(pos) then
+		return {pos}
+	end
+
+	local pos2
+
+	-- if pos is not possible, try the old player position first, to make it more likely that it has a line of sight
+	local player_name = player:get_player_name()
+	local oldplayerpos = player_positions[player_name]
+	if oldplayerpos and can_add_light( vector.new(oldplayerpos.x, oldplayerpos.y + 1, oldplayerpos.z) ) then
+		return oldplayerpos 
+	end
+
+	-- if not, try all positions around the pos
+	pos2 = vector.new(pos.x + 1, pos.y, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x - 1, pos.y, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y, pos.z + 1)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y, pos.z - 1)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y + 1, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y - 1, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	return nil
+end
+
+-- new function, returns table
+local function pick_light_position_radius(player, pos, ret, radius)
+	local pos2
+	local step = 4
+	local unstep = 1/step
+
+	for x = pos.x - radius, pos.x + radius, step do
+		for y = pos.y - radius, pos.y + radius, step do
+			for z = pos.z - radius, pos.z + radius, step do
+				pos2 = vector.new(round(x*unstep)*step, round(y*unstep)*step, round(z*unstep)*step)
+				distance = math.sqrt(math.pow(pos.x - x, 2) + math.pow(pos.y - y, 2) + math.pow(pos.z - z, 2))
+				if distance <= radius and can_add_light( pos2 ) then
+					table.insert(ret, pos2)
+				end
+			end
+		end
+	end
+
+	return ret
+end
+
+local function pick_light_position_mega(player, pos)
+	local ret = {}
+
+	if can_add_light(pos) then
+		table.insert(ret, pos)
+	end
+	pick_light_position_radius(player, pos, ret, 10)
+
+	return ret
+end
+
+local function pick_light_position(player, pos, light_item)
+	if light_item == "walking_light:megatorch" then
+		return pick_light_position_mega(player, pos)
+	end
+	return pick_light_position_regular(player, pos)
+end
+
+-- adds light at the given position
+local function add_light(player, pos)
+	local player_name = player:get_player_name()
+	local node  = mt_get_node_or_nil(pos)
+	if node == nil then
+		-- don't do anything for nil blocks... they are non-loaded blocks, so we don't want to overwrite anything there
+--		print("DEBUG: walking_light.add_light(), node is nil, pos = " .. dumppos(pos))
+		return false
+	elseif node.name == "air" then
+		-- when the node that is already there is air, add light
+		mt_add_node(pos,{type="node",name=walking_light_node})
+		if not table_contains_pos(light_positions[player_name], pos) then
+			table_insert_pos(light_positions[player_name], pos)
+		end
+
+--		if node then
+--			print("DEBUG: add_light(), node.name = " .. node.name .. ", pos = " .. dumppos(pos))
+--		else
+--			print("DEBUG: add_light(), node.name = nil, pos = " .. dumppos(pos))
+--		end
+		return true
+	elseif is_light(node) then
+		-- no point in adding light where it is already, but we should assign it to the player so it gets removed (in case it has no player)
+--		print("DEBUG: add_light(), not adding; node.name = " .. node.name .. ", pos = " .. dumppos(pos))
+
+		if not table_contains_pos(light_positions[player_name], pos) then
+			table_insert_pos(light_positions[player_name], pos)
+		end
+
+		return true
+	end
+--	print("DEBUG: add_light(), not adding; node.name = " .. node.name)
+	return false
+end
+
+-- updates all the light around the player, depending on what they are wielding
+local function update_light_player(player)
+	-- if there is no player, there can be no update
+	if not player then
+		return
+	end
+
+	-- figure out if they wield light; this will be nil if not
+	local wielded_item = get_wielded_light_item(player)
+
+	local player_name = player:get_player_name()
+	local pos = player:getpos()
+	local rounded_pos = vector.round(pos)
+
+	-- check for a nil node where the player is; if it is nil, we assume the block is not loaded, so we return without updating player_positions
+	-- that way, it should add light next step
+	local node  = mt_get_node_or_nil(rounded_pos)
+	if node == nil then
+		return
+	end
+
+	if not player_moved(player) and wielded_item == last_wielded[player_name] then
+		-- no update needed if the wiedled light item is the same as before (including nil), and the player didn't move
+		return
+	end
+	last_wielded[player_name] = wielded_item;
+
+	local wantlightpos = nil
+	local wantpos = vector.new(rounded_pos.x, rounded_pos.y + 1, rounded_pos.z)
+	if wielded_item then
+		-- decide where light should be
+		wantlightpos = pick_light_position(player, wantpos, wielded_item)
+--		print("DEBUG: walking_light update_light_player(); wantpos = " .. dumppos(wantpos) .. ", wantlightpos = " .. dumppos(wantlightpos))
+	end
+
+	if wielded_item and wantlightpos then
+		-- add light that isn't already there
+		for i,newpos in ipairs(wantlightpos) do
+			add_light(player, newpos)
+		end
+	end
+
+	-- go through all light owned by the player to remove all but what should be kept
+    for i,oldlightpos in ripairs(light_positions[player_name]) do
+        if not wantlightpos or oldlightpos and oldlightpos.x and not table_contains_pos(wantlightpos, oldlightpos) then
+			remove_light(player, oldlightpos)
+        end
+    end
+
+	player_positions[player_name] = vector.round(pos)
+
+--	print("DEBUG: walking_light.update_light_player(): wantlightpos = " .. dumppostable(wantlightpos) .. ", light_positions = " .. dumppostable(light_positions[player_name]))
+end
+
+local function update_light_all()
+	-- go through all players to check
+	for i,player_name in ipairs(players) do
+		local player = minetest.get_player_by_name(player_name)
+		update_light_player(player)
+	end
+end
+
+-- return true if item is a light item
+function is_light_item(item)
+	for I in pairs(light_items) do
+		if item == light_items[I] then
+			return true
+		end
+	end
+	return false
+end
+
+-- returns a string, the name of the item found that is a light item
+function get_wielded_light_item(player)
+	local wielded_item = player:get_wielded_item():get_name()
+	if is_light_item(wielded_item) then
+		return wielded_item
+	end
+
+	-- check equipped armor - requires unified_inventory maybe
+	local player_name = player:get_player_name()
+	if player_name then
+		local armor_inv = minetest.get_inventory({type="detached", name=player_name.."_armor"})
+		if armor_inv then
+--            print( dump(armor_inv:get_lists()) )
+			local item_name = "walking_light:helmet_diamond"
+			local stack = ItemStack(item_name)
+			if armor_inv:contains_item("armor", stack) then
+				return item_name
+			end
+		end
+	end
+
+	return nil
+end
+
+-- return true if player is wielding a light item
+function wielded_light(player)
+	return get_wielded_light_item(player) ~= nil
+end
+
+minetest.register_on_joinplayer(function(player)
+	local player_name = player:get_player_name()
+	table.insert(players, player_name)
+	last_wielded[player_name] = get_wielded_light_item(player)
+	local pos = player:getpos()
+	player_positions[player_name] = nil
+	light_positions[player_name] = {}
+	update_light_player(player)
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	local player_name = player:get_player_name()
+	for i,v in ipairs(players) do
+		if v == player_name then
+			table.remove(players, i)
+		end
+	end
+	last_wielded[player_name] = false
+	remove_light_player(player)
+	player_positions[player_name]=nil
+end)
+
+minetest.register_globalstep(function(dtime)
+	for i,player_name in ipairs(players) do
+		local player = minetest.get_player_by_name(player_name)
+		if player ~= nil then
+			update_light_player(player)
+		else
+			table.remove(players, i)
+		end
+	end
+end)
+
+minetest.register_node("walking_light:light_debug", {
+	drawtype = "glasslike",
+	tiles = {"walking_light_debug.png"},
+	inventory_image = minetest.inventorycube("walking_light.png"),
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = true,
+	sunlight_propagates = true,
+	light_source = 14,
+	selection_box = {
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0},
+	},
+})
+
+minetest.register_node("walking_light:light", {
+	drawtype = "glasslike",
+	tiles = {"walking_light.png"},
+	inventory_image = minetest.inventorycube("walking_light.png"),
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = true,
+	sunlight_propagates = true,
+	light_source = 14,
+	selection_box = {
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0},
+	},
+})
+
+function update_walking_light_node()
+	if walking_light_debug then
+		walking_light_node = "walking_light:light_debug"
+	else
+		walking_light_node = "walking_light:light"
+	end
+end
+update_walking_light_node()
+
+walking_light.register_tool('pick')
+walking_light.register_tool('axe')
+walking_light.register_tool('shovel')
+walking_light.register_tool('sword')
+
+minetest.register_tool("walking_light:helmet_diamond", {
+	description = "Diamond Helmet with light",
+	inventory_image = "walking_light_inv_helmet_diamond.png",
+	wield_image = "3d_armor_inv_helmet_diamond.png",
+	groups = {armor_head=15, armor_heal=12, armor_use=100},
+	wear = 0,
+})
+
+minetest.register_node("walking_light:megatorch", {
+    description = "Megatorch",
+    drawtype = "torchlike",
+    tiles = {
+        {
+            name = "default_torch_on_floor_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+        {
+            name="default_torch_on_ceiling_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+        {
+            name="default_torch_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+    },
+    inventory_image = "default_torch_on_floor.png",
+    wield_image = "default_torch_on_floor.png",
+    paramtype = "light",
+    paramtype2 = "wallmounted",
+    sunlight_propagates = true,
+    is_ground_content = false,
+    walkable = false,
+    light_source = 14,
+    selection_box = {
+        type = "wallmounted",
+        wall_top = {-0.1, 0.5-0.6, -0.1, 0.1, 0.5, 0.1},
+        wall_bottom = {-0.1, -0.5, -0.1, 0.1, -0.5+0.6, 0.1},
+        wall_side = {-0.5, -0.3, -0.1, -0.5+0.3, 0.3, 0.1},
+    },
+    groups = {choppy=2,dig_immediate=3,flammable=1,attached_node=1},
+    legacy_wallmounted = true,
+    --sounds = default.node_sound_defaults(),
+})
+
+minetest.register_craft({
+	output = 'walking_light:helmet_diamond',
+	recipe = {
+		{'default:torch'},
+		{'3d_armor:helmet_diamond'},
+	}
+})
+
+minetest.register_craft({
+	output = 'walking_light:megatorch',
+	recipe = {
+		{'default:torch', 'default:torch', 'default:torch'},
+		{'default:torch', 'default:torch', 'default:torch'},
+		{'default:torch', 'default:torch', 'default:torch'},
+	}
+})
+
+minetest.register_chatcommand("walking_light_clear_light", {
+	params = "<size>",
+	description = "Remove light nodes from the area",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use mapclearlight"
+		end
+
+		local pos = vector.round(minetest.get_player_by_name(name):getpos())
+		local size = tonumber(param) or 40
+
+		for i,v in ipairs({"walking_light:light", "walking_light:light_debug"}) do
+			point = minetest.find_node_near(pos, size/2, v)
+			while point do
+				remove_light(nil, point)
+				oldpoint = point
+				point = minetest.find_node_near(pos, size/2, v)
+				if poseq(oldpoint, point) then
+					return false, "Failed... infinite loop detected"
+				end
+			end
+		end
+		return true, "Done."
+	end,
+})
+
+minetest.register_chatcommand("walking_light_add_light", {
+	params = "<size>",
+	description = "Add walking_light:light to a position, without a player owning it",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use mapaddlight"
+		end
+
+		local pos = vector.round(minetest.get_player_by_name(name):getpos())
+		pos = vector.new(pos.x, pos.y + 1, pos.z)
+
+		if pos then
+			mt_add_node(pos,{type="node",name=walking_light_node})
+		end
+
+		return true, "Done."
+	end,
+})
+
+minetest.register_chatcommand("walking_light_debug", {
+	description = "Change to debug mode, so light blocks are visible.",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use walking_light_debug"
+		end
+
+		walking_light_debug = not walking_light_debug
+        update_walking_light_node()
+ 
+		return true, "Done."
+	end,
+})
+
+-- vim: ts=4 sw=4 softtabstop=4 smarttab noexpandtab

diff/walking_light.diff/init.lua.diff

@@ -0,0 +1,16 @@
+514c514
+< 	light_source = 13,
+---
+> 	light_source = 14,
+529c529
+< 	light_source = 13,
+---
+> 	light_source = 14,
+545a546,548
+> walking_light.register_tool('axe')
+> walking_light.register_tool('shovel')
+> walking_light.register_tool('sword')
+594c597
+<     light_source = 13,
+---
+>     light_source = 14,

mods/walking_light/README.md

@@ -0,0 +1,24 @@
+minetest mod walking_light
+
+forked from 0.6 https://forum.minetest.net/viewtopic.php?f=11&t=2621&hilit=walking+light
+
+Licensing:
+==========
+
+If not noted elsewhere:
+    Code: WTFPL, textures: CC BY-SA
+
+Some textures taken from 3d_armor mod
+	these files are directly from the 3d_armor mod:
+		textures/walking_light_helmet_diamond.png
+		textures/walking_light_helmet_diamond_preview.png
+	parts of the following files came from 3d_armor's "3d_armor_inv_helmet_diamond.png": 
+		textures/walking_light_inv_helmet_diamond.png
+		textures/walking_light_inv_helmet_diamond.xcf
+
+	License Textures: 2013 Ryan Jones - CC-BY-SA
+
+	see 3d_armor mod here
+	https://forum.minetest.net/viewtopic.php?f=11&t=4654
+	https://github.com/stujones11/minetest-3d_armor
+

mods/walking_light/depends.txt

@@ -0,0 +1 @@
+default

mods/walking_light/init.lua

@@ -1,144 +1,685 @@
+-- list of all players seen by minetest.register_on_joinplayer
 local players = {}
+-- all player positions last time light was updated: {player_name : {x, y, z}}
 local player_positions = {}
+-- all light positions of light that currently is created {player_name : {i: {x, y, z}}
+local light_positions = {}
+-- last item seen wielded by players
 local last_wielded = {}
 
+-- toggles debug mode
+local walking_light_debug = false
+-- name of light node, changed by toggling debug mode
+local walking_light_node = nil
+
+-- initialize walking light
+walking_light = {}
+
+-- list of items that use walking light
+local light_items = {
+	"default:torch",
+	"walking_light:helmet_diamond", "walking_light:megatorch"
+}
+
+function walking_light.addLightItem(item)
+	for I in pairs(light_items) do
+		if item == light_items[I] then
+			minetest.log("warning", "[walking_light] \"" .. item .. "\" is already light item.")
+			return
+		end
+	end
+	
+	table.insert(light_items, -1, item)
+end
+
+function walking_light.getLightItems()
+	return light_items
+end
+
+function walking_light.register_tool(tool)
+	item = 'walking_light:' .. tool .. '_mese'
+	default = 'default:' .. tool .. '_mese'
+
+	definition = table.copy(minetest.registered_items[default])
+	definition.description = definition.description .. ' with light'
+	definition.inventory_image = 'walking_light_mese' .. tool .. '.png'
+
+	minetest.register_tool(item, definition)
+	minetest.register_craft({
+		output = item,
+		recipe = {
+			{'default:torch'},
+			{ default },
+		}
+	})
+
+	walking_light.addLightItem(item)
+end
+
+-- from http://lua-users.org/wiki/IteratorsTutorial
+-- useful for removing things from a table because removing from the middle makes it skip elements otherwise
+function ripairs(t)
+  local function ripairs_it(t,i)
+    i=i-1
+    local v=t[i]
+    if v==nil then return v end
+    return i,v
+  end
+  return ripairs_it, t, #t+1
+end
+
+-- formats a vector with shorter output than dump
+local function dumppos(pos)
+	if pos == nil then
+		return "nil"
+	end
+	local x = "nil"
+	if pos.x then
+		x = pos.x
+	end
+	local y = "nil"
+	if pos.y then
+		y = pos.y
+	end
+	local z = "nil"
+	if pos.z then
+		z = pos.z
+	end
+
+	return "(" .. x .. "," .. y .. "," .. z .. ")"
+end
+
+-- formats a table containing vectors with shorter output than dump
+local function dumppostable(t)
+	if t == nil then
+		return "nil"
+	end
+	if #t == 0 then
+		return "0{}"
+	end
+
+	ret = #t .. "{\n"
+	for i,pos in ipairs(t) do
+		ret = ret .. "    " .. dumppos(pos) .. "\n"
+	end
+	ret = ret .. "}"
+	return ret
+end
+
+function mt_get_node_or_nil(pos)
+	if pos == nil then
+		print("ERROR: walking_light.mt_get_node_or_nil(), pos is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	return minetest.get_node_or_nil(pos)
+end
+
+function mt_add_node(pos, sometable)
+	if pos == nil then
+		print("ERROR: walking_light.mt_add_node(), pos is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	if sometable == nil then
+		print("ERROR: walking_light.mt_add_node(), sometable is nil")
+		print(debug.traceback("Current Callstack:\n"))
+		return nil
+	end
+	minetest.add_node(pos,sometable)
+end
+
 function round(num) 
 	return math.floor(num + 0.5) 
 end
 
+local function poseq(pos1, pos2)
+	if pos1 == nil and pos2 == nil then
+		return true
+	end
+	if pos1 == nil or pos2 == nil then
+		return false
+	end
+	return pos1.x == pos2.x and pos1.y == pos2.y and pos1.z == pos2.z
+end
+
+-- return true if the player moved since last player_positions update
+local function player_moved(player)
+	local player_name = player:get_player_name()
+	local pos = player:getpos()
+	local rounded_pos = vector.round(pos)
+	local oldpos = player_positions[player_name]
+	if oldpos == nil or not poseq(rounded_pos, oldpos) then
+		-- if oldpos is nil, we assume they just logged in, so consider them moved
+--		print("DEBUG: walking_light, player_moved(); moved = true; rounded_pos = " .. dumppos(rounded_pos) .. ", oldpos = " .. dumppos(oldpos))
+		return true
+	end
+--	print("DEBUG: walking_light, player_moved(); moved = false; rounded_pos = " .. dumppos(rounded_pos) .. ", oldpos = " .. dumppos(oldpos))
+	return false
+end
+
+-- same as table.remove(t,remove_pos), but uses poseq instead of comparing references (does lua have comparator support, so this isn't needed?)
+local function table_remove_pos(t, remove_pos)
+--	local DEBUG_oldsize = #t
+
+	for i,pos in ipairs(t) do
+		if poseq(pos, remove_pos) then
+			table.remove(t, i)
+			break
+		end
+	end
+
+--	local DEBUG_newsize = #t
+--	print("DEBUG: walking_light.table_remove_pos(), oldsize = " .. DEBUG_oldsize .. ", newsize = " .. DEBUG_newsize)
+end
+
+-- same as t[remove_pos], but uses poseq instead of comparing references (does lua have comparator support, so this isn't needed?)
+local function table_contains_pos(t, remove_pos)
+	for i,pos in ipairs(t) do
+		if poseq(pos, remove_pos) then
+			return true
+		end
+	end
+	return false
+end
+
+-- same as table.insert(t,pos) but makes sure it is not duplicated
+local function table_insert_pos(t, pos)
+	if not table_contains_pos( pos ) then
+		table.insert(t, pos)
+	end
+end
+
+local function is_light(node)
+	if node ~= nil and ( node.name == "walking_light:light" or node.name == "walking_light:light_debug" ) then
+		return true
+	end
+	return false
+end
+    
+-- removes light at the given position
+-- player is optional
+local function remove_light(player, pos)
+	local player_name
+	if player then
+		player_name = player:get_player_name()
+	end
+	local node = mt_get_node_or_nil(pos)
+	if is_light(node) then
+		mt_add_node(pos,{type="node",name="air"})
+		if player_name then
+			table_remove_pos(light_positions[player_name], pos)
+		end
+	else
+		if node ~= nil then
+			print("WARNING: walking_light.remove_light(), pos = " .. dumppos(pos) .. ", tried to remove light but node was " .. node.name)
+			table_remove_pos(light_positions[player_name], pos)
+		else
+			print("WARNING: walking_light.remove_light(), pos = " .. dumppos(pos) .. ", tried to remove light but node was nil")
+		end
+	end
+end
+
+-- removes all light owned by a player
+local function remove_light_player(player)
+	local player_name = player:get_player_name()
+
+    for i,old_pos in ripairs(light_positions[player_name]) do
+		if old_pos then
+--			print("DEBUG: walking_light.remove_light_player(), removing old light; old_pos = " .. dumppos(old_pos))
+			remove_light(player, old_pos)
+		end
+	end
+--	print("DEBUG: walking_light.remove_light_player(), done; light_positions = " .. dumppostable(light_positions[player_name]))
+end
+
+local function can_add_light(pos)
+	local node  = mt_get_node_or_nil(pos)
+	if node == nil or node.name == "air" then
+--		print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", true")
+		return true
+	elseif is_light(node) then
+--		print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", true")
+		return true
+	end
+--	print("walking_light can_add_light(), pos = " .. dumppos(pos) .. ", false")
+	return false
+end
+
+-- old function returns pos instead of table, for only one position
+local function pick_light_position_regular(player, pos)
+	if can_add_light(pos) then
+		return {pos}
+	end
+
+	local pos2
+
+	-- if pos is not possible, try the old player position first, to make it more likely that it has a line of sight
+	local player_name = player:get_player_name()
+	local oldplayerpos = player_positions[player_name]
+	if oldplayerpos and can_add_light( vector.new(oldplayerpos.x, oldplayerpos.y + 1, oldplayerpos.z) ) then
+		return oldplayerpos 
+	end
+
+	-- if not, try all positions around the pos
+	pos2 = vector.new(pos.x + 1, pos.y, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x - 1, pos.y, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y, pos.z + 1)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y, pos.z - 1)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y + 1, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	pos2 = vector.new(pos.x, pos.y - 1, pos.z)
+	if can_add_light( pos2 ) then
+		return {pos2}
+	end
+
+	return nil
+end
+
+-- new function, returns table
+local function pick_light_position_radius(player, pos, ret, radius)
+	local pos2
+	local step = 4
+	local unstep = 1/step
+
+	for x = pos.x - radius, pos.x + radius, step do
+		for y = pos.y - radius, pos.y + radius, step do
+			for z = pos.z - radius, pos.z + radius, step do
+				pos2 = vector.new(round(x*unstep)*step, round(y*unstep)*step, round(z*unstep)*step)
+				distance = math.sqrt(math.pow(pos.x - x, 2) + math.pow(pos.y - y, 2) + math.pow(pos.z - z, 2))
+				if distance <= radius and can_add_light( pos2 ) then
+					table.insert(ret, pos2)
+				end
+			end
+		end
+	end
+
+	return ret
+end
+
+local function pick_light_position_mega(player, pos)
+	local ret = {}
+
+	if can_add_light(pos) then
+		table.insert(ret, pos)
+	end
+	pick_light_position_radius(player, pos, ret, 10)
+
+	return ret
+end
+
+local function pick_light_position(player, pos, light_item)
+	if light_item == "walking_light:megatorch" then
+		return pick_light_position_mega(player, pos)
+	end
+	return pick_light_position_regular(player, pos)
+end
+
+-- adds light at the given position
+local function add_light(player, pos)
+	local player_name = player:get_player_name()
+	local node  = mt_get_node_or_nil(pos)
+	if node == nil then
+		-- don't do anything for nil blocks... they are non-loaded blocks, so we don't want to overwrite anything there
+--		print("DEBUG: walking_light.add_light(), node is nil, pos = " .. dumppos(pos))
+		return false
+	elseif node.name == "air" then
+		-- when the node that is already there is air, add light
+		mt_add_node(pos,{type="node",name=walking_light_node})
+		if not table_contains_pos(light_positions[player_name], pos) then
+			table_insert_pos(light_positions[player_name], pos)
+		end
+
+--		if node then
+--			print("DEBUG: add_light(), node.name = " .. node.name .. ", pos = " .. dumppos(pos))
+--		else
+--			print("DEBUG: add_light(), node.name = nil, pos = " .. dumppos(pos))
+--		end
+		return true
+	elseif is_light(node) then
+		-- no point in adding light where it is already, but we should assign it to the player so it gets removed (in case it has no player)
+--		print("DEBUG: add_light(), not adding; node.name = " .. node.name .. ", pos = " .. dumppos(pos))
+
+		if not table_contains_pos(light_positions[player_name], pos) then
+			table_insert_pos(light_positions[player_name], pos)
+		end
+
+		return true
+	end
+--	print("DEBUG: add_light(), not adding; node.name = " .. node.name)
+	return false
+end
+
+-- updates all the light around the player, depending on what they are wielding
+local function update_light_player(player)
+	-- if there is no player, there can be no update
+	if not player then
+		return
+	end
+
+	-- figure out if they wield light; this will be nil if not
+	local wielded_item = get_wielded_light_item(player)
+
+	local player_name = player:get_player_name()
+	local pos = player:getpos()
+	local rounded_pos = vector.round(pos)
+
+	-- check for a nil node where the player is; if it is nil, we assume the block is not loaded, so we return without updating player_positions
+	-- that way, it should add light next step
+	local node  = mt_get_node_or_nil(rounded_pos)
+	if node == nil then
+		return
+	end
+
+	if not player_moved(player) and wielded_item == last_wielded[player_name] then
+		-- no update needed if the wiedled light item is the same as before (including nil), and the player didn't move
+		return
+	end
+	last_wielded[player_name] = wielded_item;
+
+	local wantlightpos = nil
+	local wantpos = vector.new(rounded_pos.x, rounded_pos.y + 1, rounded_pos.z)
+	if wielded_item then
+		-- decide where light should be
+		wantlightpos = pick_light_position(player, wantpos, wielded_item)
+--		print("DEBUG: walking_light update_light_player(); wantpos = " .. dumppos(wantpos) .. ", wantlightpos = " .. dumppos(wantlightpos))
+	end
+
+	if wielded_item and wantlightpos then
+		-- add light that isn't already there
+		for i,newpos in ipairs(wantlightpos) do
+			add_light(player, newpos)
+		end
+	end
+
+	-- go through all light owned by the player to remove all but what should be kept
+    for i,oldlightpos in ripairs(light_positions[player_name]) do
+        if not wantlightpos or oldlightpos and oldlightpos.x and not table_contains_pos(wantlightpos, oldlightpos) then
+			remove_light(player, oldlightpos)
+        end
+    end
+
+	player_positions[player_name] = vector.round(pos)
+
+--	print("DEBUG: walking_light.update_light_player(): wantlightpos = " .. dumppostable(wantlightpos) .. ", light_positions = " .. dumppostable(light_positions[player_name]))
+end
+
+local function update_light_all()
+	-- go through all players to check
+	for i,player_name in ipairs(players) do
+		local player = minetest.get_player_by_name(player_name)
+		update_light_player(player)
+	end
+end
+
+-- return true if item is a light item
+function is_light_item(item)
+	for I in pairs(light_items) do
+		if item == light_items[I] then
+			return true
+		end
+	end
+	return false
+end
+
+-- returns a string, the name of the item found that is a light item
+function get_wielded_light_item(player)
+	local wielded_item = player:get_wielded_item():get_name()
+	if is_light_item(wielded_item) then
+		return wielded_item
+	end
+
+	-- check equipped armor - requires unified_inventory maybe
+	local player_name = player:get_player_name()
+	if player_name then
+		local armor_inv = minetest.get_inventory({type="detached", name=player_name.."_armor"})
+		if armor_inv then
+--            print( dump(armor_inv:get_lists()) )
+			local item_name = "walking_light:helmet_diamond"
+			local stack = ItemStack(item_name)
+			if armor_inv:contains_item("armor", stack) then
+				return item_name
+			end
+		end
+	end
+
+	return nil
+end
+
+-- return true if player is wielding a light item
+function wielded_light(player)
+	return get_wielded_light_item(player) ~= nil
+end
+
 minetest.register_on_joinplayer(function(player)
 	local player_name = player:get_player_name()
 	table.insert(players, player_name)
-	last_wielded[player_name] = player:get_wielded_item():get_name()
+	last_wielded[player_name] = get_wielded_light_item(player)
 	local pos = player:getpos()
-	local rounded_pos = {x=round(pos.x),y=round(pos.y)+1,z=round(pos.z)}
-	local wielded_item = player:get_wielded_item():get_name()
-	if wielded_item ~= "default:torch" and wielded_item ~= "walking_light:pick_mese" then
-		-- Neuberechnung des Lichts erzwingen
-		minetest.env:add_node(rounded_pos,{type="node",name="default:cobble"})
-		minetest.env:add_node(rounded_pos,{type="node",name="air"})
-	end
-	player_positions[player_name] = {}
-	player_positions[player_name]["x"] = rounded_pos.x;
-	player_positions[player_name]["y"] = rounded_pos.y;
-	player_positions[player_name]["z"] = rounded_pos.z;
+	player_positions[player_name] = nil
+	light_positions[player_name] = {}
+	update_light_player(player)
 end)
 
 minetest.register_on_leaveplayer(function(player)
 	local player_name = player:get_player_name()
 	for i,v in ipairs(players) do
-		if v == player_name then 
+		if v == player_name then
 			table.remove(players, i)
-			last_wielded[player_name] = nil
-			-- Neuberechnung des Lichts erzwingen
-			local pos = player:getpos()
-			local rounded_pos = {x=round(pos.x),y=round(pos.y)+1,z=round(pos.z)}
-			minetest.env:add_node(rounded_pos,{type="node",name="default:cobble"})
-			minetest.env:add_node(rounded_pos,{type="node",name="air"})
-			player_positions[player_name]["x"] = nil
-			player_positions[player_name]["y"] = nil
-			player_positions[player_name]["z"] = nil
-			player_positions[player_name]["m"] = nil
-			player_positions[player_name] = nil
 		end
 	end
+	last_wielded[player_name] = false
+	remove_light_player(player)
+	player_positions[player_name]=nil
 end)
 
 minetest.register_globalstep(function(dtime)
 	for i,player_name in ipairs(players) do
-		local player = minetest.env:get_player_by_name(player_name)
-		local wielded_item = player:get_wielded_item():get_name()
-		if wielded_item == "default:torch" or wielded_item == "walking_light:pick_mese" then
-			-- Fackel ist in der Hand
-			local pos = player:getpos()
-			local rounded_pos = {x=round(pos.x),y=round(pos.y)+1,z=round(pos.z)}
-			if (last_wielded[player_name] ~= "default:torch" and last_wielded[player_name] ~= "walking_light:pick_mese") or (player_positions[player_name]["x"] ~= rounded_pos.x or player_positions[player_name]["y"] ~= rounded_pos.y or player_positions[player_name]["z"] ~= rounded_pos.z) then
-				-- Fackel gerade in die Hand genommen oder zu neuem Node bewegt
-				local is_air  = minetest.env:get_node_or_nil(rounded_pos)
-				if is_air == nil or (is_air ~= nil and (is_air.name == "air" or is_air.name == "walking_light:light")) then
-					-- wenn an aktueller Position "air" ist, Fackellicht setzen
-					minetest.env:add_node(rounded_pos,{type="node",name="walking_light:light"})
-				end
-				if (player_positions[player_name]["x"] ~= rounded_pos.x or player_positions[player_name]["y"] ~= rounded_pos.y or player_positions[player_name]["z"] ~= rounded_pos.z) then
-					-- wenn Position geänder, dann altes Licht löschen
-					local old_pos = {x=player_positions[player_name]["x"], y=player_positions[player_name]["y"], z=player_positions[player_name]["z"]}
-					-- Neuberechnung des Lichts erzwingen
-					local is_light = minetest.env:get_node_or_nil(old_pos)
-					if is_light ~= nil and is_light.name == "walking_light:light" then
-						minetest.env:add_node(old_pos,{type="node",name="default:cobble"})
-						minetest.env:add_node(old_pos,{type="node",name="air"})
-					end
-				end
-				-- gemerkte Position ist nun die gerundete neue Position
-				player_positions[player_name]["x"] = rounded_pos.x
-				player_positions[player_name]["y"] = rounded_pos.y
-				player_positions[player_name]["z"] = rounded_pos.z
-			end
-
-			last_wielded[player_name] = wielded_item;
-		elseif last_wielded[player_name] == "default:torch" or last_wielded[player_name] == "walking_light:pick_mese" then
-			-- Fackel nicht in der Hand, aber beim letzten Durchgang war die Fackel noch in der Hand
-			local pos = player:getpos()
-			local rounded_pos = {x=round(pos.x),y=round(pos.y)+1,z=round(pos.z)}
-			repeat
-				local is_light  = minetest.env:get_node_or_nil(rounded_pos)
-				if is_light ~= nil and is_light.name == "walking_light:light" then
-					-- minetest.env:remove_node(rounded_pos)
-					-- Erzwinge Neuberechnung des Lichts
-					minetest.env:add_node(rounded_pos,{type="node",name="default:cobble"})
-					minetest.env:add_node(rounded_pos,{type="node",name="air"})
-				end
-			until minetest.env:get_node_or_nil(rounded_pos) ~= "walking_light:light"
-			local old_pos = {x=player_positions[player_name]["x"], y=player_positions[player_name]["y"], z=player_positions[player_name]["z"]}
-			repeat
-				is_light  = minetest.env:get_node_or_nil(old_pos)
-				if is_light ~= nil and is_light.name == "walking_light:light" then
-					-- minetest.env:remove_node(old_pos)
-					-- Erzwinge Neuberechnung des Lichts
-					minetest.env:add_node(old_pos,{type="node",name="default:cobble"})
-					minetest.env:add_node(old_pos,{type="node",name="air"})
-				end
-			until minetest.env:get_node_or_nil(old_pos) ~= "walking_light:light"
-			last_wielded[player_name] = wielded_item
+		local player = minetest.get_player_by_name(player_name)
+		if player ~= nil then
+			update_light_player(player)
+		else
+			table.remove(players, i)
 		end
 	end
 end)
 
-minetest.register_node("walking_light:light", {
+minetest.register_node("walking_light:light_debug", {
 	drawtype = "glasslike",
-	tile_images = {"walking_light.png"},
-	-- tile_images = {"walking_light_debug.png"},
+	tiles = {"walking_light_debug.png"},
 	inventory_image = minetest.inventorycube("walking_light.png"),
 	paramtype = "light",
 	walkable = false,
 	is_ground_content = true,
-	light_propagates = true,
 	sunlight_propagates = true,
 	light_source = 14,
 	selection_box = {
-        type = "fixed",
-        fixed = {0, 0, 0, 0, 0, 0},
-    },
-})
-minetest.register_tool("walking_light:pick_mese", {
-	description = "Mese Pickaxe with light",
-	inventory_image = "walking_light_mesepick.png",
-	wield_image = "default_tool_mesepick.png",
-	tool_capabilities = {
-		full_punch_interval = 1.0,
-		max_drop_level=3,
-		groupcaps={
-			cracky={times={[1]=2.0, [2]=1.0, [3]=0.5}, uses=20, maxlevel=3},
-			crumbly={times={[1]=2.0, [2]=1.0, [3]=0.5}, uses=20, maxlevel=3},
-			snappy={times={[1]=2.0, [2]=1.0, [3]=0.5}, uses=20, maxlevel=3}
-		}
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0},
 	},
 })
 
+minetest.register_node("walking_light:light", {
+	drawtype = "glasslike",
+	tiles = {"walking_light.png"},
+	inventory_image = minetest.inventorycube("walking_light.png"),
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = true,
+	sunlight_propagates = true,
+	light_source = 14,
+	selection_box = {
+		type = "fixed",
+		fixed = {0, 0, 0, 0, 0, 0},
+	},
+})
+
+function update_walking_light_node()
+	if walking_light_debug then
+		walking_light_node = "walking_light:light_debug"
+	else
+		walking_light_node = "walking_light:light"
+	end
+end
+update_walking_light_node()
+
+walking_light.register_tool('pick')
+walking_light.register_tool('axe')
+walking_light.register_tool('shovel')
+walking_light.register_tool('sword')
+
+minetest.register_tool("walking_light:helmet_diamond", {
+	description = "Diamond Helmet with light",
+	inventory_image = "walking_light_inv_helmet_diamond.png",
+	wield_image = "3d_armor_inv_helmet_diamond.png",
+	groups = {armor_head=15, armor_heal=12, armor_use=100},
+	wear = 0,
+})
+
+minetest.register_node("walking_light:megatorch", {
+    description = "Megatorch",
+    drawtype = "torchlike",
+    tiles = {
+        {
+            name = "default_torch_on_floor_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+        {
+            name="default_torch_on_ceiling_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+        {
+            name="default_torch_animated.png",
+            animation = {
+                type = "vertical_frames",
+                aspect_w = 16,
+                aspect_h = 16,
+                length = 3.0
+            },
+        },
+    },
+    inventory_image = "default_torch_on_floor.png",
+    wield_image = "default_torch_on_floor.png",
+    paramtype = "light",
+    paramtype2 = "wallmounted",
+    sunlight_propagates = true,
+    is_ground_content = false,
+    walkable = false,
+    light_source = 14,
+    selection_box = {
+        type = "wallmounted",
+        wall_top = {-0.1, 0.5-0.6, -0.1, 0.1, 0.5, 0.1},
+        wall_bottom = {-0.1, -0.5, -0.1, 0.1, -0.5+0.6, 0.1},
+        wall_side = {-0.5, -0.3, -0.1, -0.5+0.3, 0.3, 0.1},
+    },
+    groups = {choppy=2,dig_immediate=3,flammable=1,attached_node=1},
+    legacy_wallmounted = true,
+    --sounds = default.node_sound_defaults(),
+})
+
 minetest.register_craft({
-	output = 'walking_light:pick_mese',
+	output = 'walking_light:helmet_diamond',
 	recipe = {
 		{'default:torch'},
-		{'default:pick_mese'},
+		{'3d_armor:helmet_diamond'},
 	}
 })
+
+minetest.register_craft({
+	output = 'walking_light:megatorch',
+	recipe = {
+		{'default:torch', 'default:torch', 'default:torch'},
+		{'default:torch', 'default:torch', 'default:torch'},
+		{'default:torch', 'default:torch', 'default:torch'},
+	}
+})
+
+minetest.register_chatcommand("walking_light_clear_light", {
+	params = "<size>",
+	description = "Remove light nodes from the area",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use mapclearlight"
+		end
+
+		local pos = vector.round(minetest.get_player_by_name(name):getpos())
+		local size = tonumber(param) or 40
+
+		for i,v in ipairs({"walking_light:light", "walking_light:light_debug"}) do
+			point = minetest.find_node_near(pos, size/2, v)
+			while point do
+				remove_light(nil, point)
+				oldpoint = point
+				point = minetest.find_node_near(pos, size/2, v)
+				if poseq(oldpoint, point) then
+					return false, "Failed... infinite loop detected"
+				end
+			end
+		end
+		return true, "Done."
+	end,
+})
+
+minetest.register_chatcommand("walking_light_add_light", {
+	params = "<size>",
+	description = "Add walking_light:light to a position, without a player owning it",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use mapaddlight"
+		end
+
+		local pos = vector.round(minetest.get_player_by_name(name):getpos())
+		pos = vector.new(pos.x, pos.y + 1, pos.z)
+
+		if pos then
+			mt_add_node(pos,{type="node",name=walking_light_node})
+		end
+
+		return true, "Done."
+	end,
+})
+
+minetest.register_chatcommand("walking_light_debug", {
+	description = "Change to debug mode, so light blocks are visible.",
+	func = function(name, param)
+		if not minetest.check_player_privs(name, {server=true}) then
+			return false, "You need the server privilege to use walking_light_debug"
+		end
+
+		walking_light_debug = not walking_light_debug
+        update_walking_light_node()
+ 
+		return true, "Done."
+	end,
+})
+
+-- vim: ts=4 sw=4 softtabstop=4 smarttab noexpandtab

mods/walking_light/init.lua.diff

@@ -0,0 +1,16 @@
+514c514
+< 	light_source = 13,
+---
+> 	light_source = 14,
+529c529
+< 	light_source = 13,
+---
+> 	light_source = 14,
+545a546,548
+> walking_light.register_tool('axe')
+> walking_light.register_tool('shovel')
+> walking_light.register_tool('sword')
+594c597
+<     light_source = 13,
+---
+>     light_source = 14,