Question

基本上我有这个代码，当第一次运行时，它会打开一个通道供用户在配置文件中输入变量的值

if (firstRun) then 
    Channel.New("First Configurations")
    Channel:SendYellowMessage("Console","Running configuration sequence...\n How many potions would you like to buy?")
    maxMP = io.read()
-- some more variables later
    firstRun = false
end

上面的代码在我的主文件（“main.lua”）中，下面是我的配置文件（“config.lua”）：

firstRun = true -- Change it to false if you want to manually configure
maxMP = nil     -- How many MP potions would you like to buy?
maxHP = nil     -- How many HP potions would you like to buy?
-- couple more variables

我需要它做的是，在运行firstRun Channel函数后，它会在“config.lua”文件中保存“maxMP”，“maxHP”等的值，同时保存firstRun = false。

我无法将其保存在.txt文件中，它必须位于“config.lua”中我只是不知道如何

Answer 1

基本上，手动覆盖配置文件听起来像使用纯Lua的简单任务。

像这样（初始写入，对默认或当前配置做任何更改）：

local function flush_config_to_file(configTable, configFile)
    local tmpFileHandle
    local configFileLines = {}

    --start file with array declaration
    table.insert(configFileLines, "local config = {")

    --iterate default configs and put string analogical lines into table:
    for key, value in pairs(defaultConfig) do
        table.insert(configFileLines, "\t[\"key\"] = " .. tostring(value) .. ",")
    end

    --closing array:
    table.insert(configFileLines, "}")

    --returning table of config values:
    table.insert("return config")

    tmpFileHandle = io.open(configFile, "w")

    --concat lines with \n separator and write those to file:
    tmpFileHandle:write(table.concat(configFileLines, "\n"))
    tmpFileHandle:close()
end

local function create_initial_config_file(configFile)
    local defaultConfig = 
    {
        "first_run" = true,
        "maxMP" = nil,
        "maxHP" = nil

        -- etc etc etc
    }

    flush_config_to_file(defaultConfig, configFile)
end

local function get_config_from_module(configModule)
    local tmpConfigTable

    package.loaded[configModule] = nil
    tmpConfigTable = require(configModule)

    return tmpConfigTable
end

使用此代码段和config_file.lua：

local configModule = "config_file"
local configFile = configModule .. ".lua"
local tmpConfig = nil

create_initial_config_file(configFile)

-- Wall of text and logics I do not care about

-- Then user requires some configuration from file (module):
tmpConfig = getConfigFromModule(configModule)

-- User interaction or whatever which updates config:
tmpConfig.maxHP = io.read()
tmpConfig.first_run = false
-- etc etc 

-- Rewrite config file with updated values:
flush_config_to_file(tmpConfig, configFile)

生成的初始config_file.lua文件内容应该是这样的：

local config = {
    ["first_run"] = true,
    ["maxMP"] = nil,
    ["maxHP"] = nil,
}

return config

注意：代码未经测试，仅显示Lua在某种配置下的易用性。

注2：了解Lua模块缓存＆＃39; ref Seth Carnegie

通过用户输入将变量值保存在文件中

1 个答案: