Create TurtleEmulator / Tester

[ChristophLHR]

local t= {
  ["up"] = function(...) end -- track position and direction
  ["down"] = function (...) end -- track position and direction
  -- ...
}

local mt = {
  __index = function(tbl, key)
    if t[key] ~= nil
      return t[key]
    else
      return defaultValue  -- Return the default value for nonexistent keys
  end
}

-- Set the metatable for the table
setmetatable(t, mt)