Initial commit

.gitignore

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+.got/*

README.md

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+## Minetest QR Code
+
+Installing mod:
+
+
+Download from source...
+
+Please add `qrcode` to `secure.trusted_mods` or else the mod won't load and your server will crash!

init.lua

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+
+qrencode = dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/qrencode.lua")
+
+local function matrix_to_string(tab)
+	local str_tab = {}
+	for i=1,#tab + 2 do
+		str_tab[i] = {"0"}
+	end
+
+	for x=1,#tab do
+		for y=1,#tab do
+			if tab[x][y] > 0 then
+				str_tab[y + 1][x + 1] = "1"
+			elseif tab[x][y] < 0 then
+				str_tab[y + 1][x + 1] = "0"
+			else 
+				str_tab[y + 1][x + 1] = " "
+				str_tab[y + 1][x + 2] = "1"
+			end
+		end
+	end
+
+	local padding_string = {}
+	for i=1,#tab do
+		padding_string[i] = "0"
+	end
+	str_tab[1] = padding_string
+	str_tab[#tab + 2] = padding_string
+
+	for i=1,#tab + 2 do
+		str_tab[i][#str_tab[i] + 1] = "0"
+	end
+	return str_tab
+end
+
+minetest.register_chatcommand("qrcode", {
+	params = "<message>",
+	description = "Creates QR Code.",
+	func = function(name, message)
+		local player = minetest.get_player_by_name(name)
+		local pos = player:get_pos()
+		local ok, tab_or_message = qrencode.qrcode(message)
+		if not ok then
+			print('Something went wrong')
+		else
+			local rows = matrix_to_string(tab_or_message)
+			local string
+			for x=1,#rows do
+				for z=1,#rows do
+					if rows[x][z] == "1" then
+						minetest.set_node(vector.new(pos.x + x, pos.y - 1, pos.z + z), { name = "wool:black" })
+					elseif rows[x][z] == "0" then
+						minetest.set_node(vector.new(pos.x + x, pos.y - 1, pos.z + z), { name = "wool:white" })
+--					else
+--						string = string .. " "
+					end
+				end
+			end
+		end
+	end
+})

mod.conf

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+name = qrcode
+description = Create QR Codes in your minetest world
+