Translations
Everyone should be able to read it
- Martin
- 2 min read
Translation
It had to be possible to easily translate the entire game to another language. After some experiments I created the I18n class for engine3. At the moment it is nothing more than this.
function I18n:new()
self.locale = nil
self.currentLocaleFile = nil
end
--- Convert string to i18n locale
---@param str? string
---@param replacements? table
function I18n:s(str, replacements)
if str == nil then
return
end
local strOut = tostring(str)
-- Maybe there is a overwrite
if self.locale[strOut] ~= nil then
strOut = self.locale[strOut]
end
-- Maybe there are replacements
if replacements then
return string.gsub(strOut, "[%%%d]+", replacements)
end
return strOut
end
---@param file string
---@param data table
function I18n:createI18nData(file, data)
self.locale = data
self.currentLocaleFile = file
end
--- Load the locale in memory
---@param file string Path to the source file .mp only at the moment
function I18n:load(file)
if type(file) ~= "string" then
error("Cannot load i18n file, is not a string")
end
if string.find(file, ".mp") == nil then
error("i18n file is is not supported: " .. file)
end
local msgPackData = Msgpack:load(file)
if msgPackData == nil then
error("File data is nil for file: " .. file)
return
end
self:createI18nData(file, msgPackData)
end
In het spel kan het vervolgens al global function overal gebruikt worden op de volgende manier
-- load the selected language once
i18n:load(config.localeDefault) -- nl.mp
-- use the default english strings into the selected language
local i18nHoverText = i18n:s("Hello")
language.yaml
en:
"Hello" : null
nl:
"Hello" : "Hallo"
As you can see the ’en’ language is also in the language.yaml but it has the value null. This means that the original English sentence must be used. This makes it possible to translate English to other sentences in the future.
en:
"Hello z" : "Hallo y"
nl:
"Hello z" : "Hallo y"
print(i18n:s("Hello z")) -- Hallo y
For now this is all sufficient and seems to work well and quickly.
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