turtleClient

-- PASTE 2TLTxYmF
local modem = peripheral.find("modem")
modem.open(1)

-- Check connection of this turtle
local function checkConnection(channel, replyChannel, params, dist)
      modem.transmit(replyChannel,channel,"CheckConnection true")
end

-- Get this turtle's local map
local function getMap(channel, replyChannel, params, dist)
      if ~fs.exists("map") then
            local file = fs.open("map","w")
            file.write("0 0")
            file.close()
            modem.transmit(replyChannel,channel,"GetMap 0 0")
      else
            local file = fs.open("map","r")
            modem.transmit(replyChannel,channel,"GetMap " .. file.readAll())
            file.close()
      end
end

-- Set this turtle's local map
local function setMap(channel, replyChannel, params, dist)
      local file = fs.open("map","w")
      local content = ""
      for i,v in ipairs(params) do
            content = content .. v
      end
      file.write(content)
      file.close()
end

-- Move to absolute coordinates
local function goAbsolute(channel, replyChannel, params, dist)

end

-- Move to relative coordinates
local function goRelative(channel, replyChannel, params, dist)

end

-- Explore and map surroundings
local function explore(channel, replyChannel, params, dist)

end

local COMMANDS = {
      {name = "CheckConnection", func = checkConnection},
      {name = "GetMap", func = getMap},
      {name = "SetMap", func = setMap}
      {name = "GoAbsolute", func = goAbsolute},
      {name = "GoRelative", func = goRelative},
      {name = "Explore", func = explore}
}

-- Main program logic
while true do
      -- Wait for commands from server
      local event, peripheral_name, channel, replyChannel, message, distance = os.pullEvent("modem_message")
      -- When a command is received, look through the COMMANDS table to see if it is valid
      local commandName = string.gsub(string.sub(message, 1, string.find(message, " ") or string.len(message)), " ", "")
      for i, v in ipairs(COMMANDS) do
            -- If the command is found, check for params then execute
            if v.name == commandName then
                  -- Check for params
                  local spaceI = string.find(message, " ")
                  local params = {}
                  if spaceI then
                        local p = ""
                        for i = spaceI + 1, string.len(message) do
                              local curChar = string.sub(message, i, i)
                              if curChar ~= " " then
                                    p = p .. curChar
                              else
                                    params[#params + 1] = p
                                    p = ""
                              end
                        end
                        params[#params + 1] = p
                  end
                  -- Execute the command
                  v.func(channel, replyChannel, params, distance)
            end
      end
end