add mapfix mod

mapfix/.luacheckrc

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+unused_args = false
+allow_defined_top = true
+exclude_files = {".luacheckrc"}
+
+globals = {
+    "minetest",
+}
+
+read_globals = {
+    string = {fields = {"split"}},
+    table = {fields = {"copy", "getn"}},
+
+    -- Builtin
+    "vector", "ItemStack",
+    "dump", "DIR_DELIM", "VoxelArea", "Settings",
+
+    -- MTG
+    "default", "sfinv", "creative", "carts",
+
+    --depends
+}

mapfix/LICENSE

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+GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+See http://www.gnu.org/licenses/gpl-3.0.en.html

mapfix/README.md

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+# mapfix
+
+Fix some map errors (flow and light problems)
+
+![Before](http://i.imgur.com/T3csYME.png)
+![After](http://i.imgur.com/d0V0aO7.png)
+Look at the water and the jungle trunk at the center.
+
+
+## minetest.conf settings
+* mapfix_default_size (by default 24) : size used when omitted
+* mapfix_max_size (by default 32) : maximum size allowed for players
+* mapfix_delay (by default 15) : minimal delay in seconds between 2 `/mapfix` (to avoid server freezing)
+* mapfix_priv (by default server) : priv that allows use of `/mapfix` without restrictions

mapfix/description.txt

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+Fix some map errors (flow and light problems)

mapfix/init.lua

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+local function mapfix(minp, maxp)
+	local vm = minetest.get_voxel_manip(minp, maxp)
+	vm:update_liquids()
+	vm:write_to_map()
+	vm:update_map()
+	local emin, emax = vm:get_emerged_area()
+	print(minetest.pos_to_string(emin), minetest.pos_to_string(emax))
+end
+
+local previous = os.time()
+
+local default_size = tonumber(minetest.settings:get("mapfix_default_size")) or 24
+local max_size = tonumber(minetest.settings:get("mapfix_max_size")) or 32
+local delay = tonumber(minetest.settings:get("mapfix_delay")) or 15
+
+local function mapfix_priv()
+    local priv = minetest.settings:get("mapfix_priv")
+
+    if not minetest.registered_privileges[priv] then
+        return "server"
+    else
+        return priv
+    end
+end
+
+minetest.register_chatcommand("mapfix", {
+	params = "<size>",
+	description = "Recalculate the flowing liquids and the light of a chunk",
+	func = function(name, param)
+		local pos = vector.round(minetest.get_player_by_name(name):getpos())
+		local size = tonumber(param) or default_size
+
+		if size >= 121 then
+			return false, "Radius is too big"
+		end
+		local privs = minetest.check_player_privs(name, mapfix_priv())
+		local time = os.time()
+
+		if not privs then
+			if size > max_size then
+				return false, "You need the " .. mapfix_priv() .. " privilege to exceed the radius of " .. max_size .. " blocks"
+			elseif time - previous < delay then
+				return false, "Wait at least " .. delay .. " seconds from the previous \"/mapfix\"."
+			end
+			previous = time
+		end
+
+		minetest.log("action",
+        name .. " uses mapfix at " .. minetest.pos_to_string(vector.round(pos)) .. " with radius " .. size)
+
+        -- When passed to get_voxel_manip, positions are rounded up, to a multiple of 16 nodes in each direction.
+        -- By subtracting 8 it's rounded to the nearest chunk border. max is used to avoid negative radius.
+		size = math.max(math.floor(size - 8), 0)
+
+		local minp = vector.subtract(pos, size)
+		local maxp = vector.add(pos, size)
+
+		mapfix(minp, maxp)
+		return true, "Done."
+	end,
+})

mapfix/mod.conf

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+name = mapfix

mapfix/settingtypes.txt

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+mapfix_default_size (default size a mapfix range is) int 24
+mapfix_max_size (max size a mapfix range can be) int 32
+mapfix_delay (delay between issueing of /mapfix for players) int 15
+mapfix_priv (priv for unrestricted /mapfix use) string server