数组 – 在Lua中将数组作为函数参数传递？

我正在尝试改变我在 this video中找到的类示例,以使其更加流线型使用.希望我的评论可以解释我正在努力完成的事情.我遇到的问题是当我尝试使用数据表时它会给我这个错误：lua：class example.lua：7：尝试索引字段’data'(一个零值)

我假设这意味着数组没有正确传递给函数,但我不知道为什么.我是Lua的初学者.

这是我得到的：

local enemy = {}; --enemy class table

function enemy:New(data)
  local object = {}; --table to store all of data within class
  local len = # data --get length of passed table
  for i = 1,len,2 do --loop to input all data from passed table into object table
    object.data[i] = data[i + 1];
  end

  function object:getData(choice) --function that allows us to retrieve data from the class
    return self[choice];
  end

  return object; --return class data table so we can create objects using the class
end

local monsterdata = {"name","monster","x",64,"y",128,"hp",4}; --table containing data of monster. keys are odd numbered,values to those keys are even numbered
local monster = enemy:New(monsterdata); --create a object using the class

local test = monster:getData("x"); --set variable to a value with the getData function

print(test);

object[data[i]] = data[i + 1];

object.data[i] = data[i + 1];