currentScroll = 0;
turtles = 0;
tIds = {}

function clear()
	term.clear()
	term.setCursorPos(1, 1)
end

clear()

function writeIn(x, y, text)
	local i,j = term.getSize()
	--if y < j then
		term.setCursorPos(x, y)
		write(text);
	--end
end

function draw()
	local x,y = term.getSize()

	term.setCursorPos(1, 1)
	local posX, posY, posZ = gps.locate();
	print("Turtle Manager (#" .. os.getComputerID() .. ") (" .. turtles .. ")");
	rednet.open("top")
	for i = 0, x do
		term.setCursorPos(i,2)
		write("-")
	end

	for i = 0, turtles do
		--writeIn(1, 3 + (i + currentScroll) % (y - 2), "#" .. index);
		if(tIds[i] ~= nil) then
			local id = tIds[i]
			local pos = "offline";
			rednet.send(id, "x")
			_, xPos = rednet.receive(0)
			if(_ ~= nil)then
				rednet.send(id, "y")
				_, yPos = rednet.receive(0)
				rednet.send(id, "z")
				_, zPos = rednet.receive(0)

				if(xPos ~= nil and yPos ~= nil and zPos ~= nil) then
					pos = (xPos .. ":" .. yPos .. ":" .. zPos);
				end
			end
			term.setCursorPos(1, 3 + i)
			term.clearLine();
			writeIn(1, 3 + i, tIds[i .."label"] .. " (#" ..id..") (" ..pos.. ")")
		end
	end
	currentScroll = (currentScroll + 1);
end

function split(pString, pPattern)
   local Table = {}  -- NOTE: use {n = 0} in Lua-5.0
   local fpat = "(.-)" .. pPattern
   local last_end = 1
   local s, e, cap = pString:find(fpat, 1)
   while s do
          if s ~= 1 or cap ~= "" then
         table.insert(Table,cap)
          end
          last_end = e+1
          s, e, cap = pString:find(fpat, last_end)
   end
   if last_end <= #pString then
          cap = pString:sub(last_end)
          table.insert(Table, cap)
   end
   return Table
end


while true do
	local id, message = rednet.receive(1)
	if(message ~= nil) then
		--local sMessage = split(message, ":")

		if(string.sub(message, 1, 7) == "ayylmao") then
			local isNew = true;
			for i = 0, turtles do
				if(tIds[i] == id) then
					isNew = false;
				end
			end
			if(isNew)then
				tIds[turtles] = id;
				tIds[turtles .. "label"] = string.sub(message, 9, #message)
				turtles = turtles + 1;
			end

			clear()
			rednet.send(id, "kthxbai")
		end
	end
	draw()
end