gamecore: avoid crashes when there is no data for translation or inputs

gamecore/input.lua

@@ -26,7 +26,7 @@ local InputManager = Object:extend()
 
 function InputManager:new(controller)
   self.controller = controller
-  self.data = self.controller.options.data.input[1]
+  self.data       = self.controller.options:getPlayerInputData(1)
 
   self.keys     = self:getKeyList()
   self.fakekeys = self:getKeyList()

gamecore/lang.lua

@@ -23,11 +23,22 @@
 ]]
 
 local LanguageManager = Object:extend()
-local langs = require "datas.languages"
 
 function LanguageManager:new(controller)
   self.controller = controller
   self:setLang(self.controller.options.data.language)
+  self:getTranslationData()
+end
+
+function LanguageManager:getTranslationData()
+  local _path = "datas/languages/init.lua"
+  local fileinfo = love.filesystem.getInfo(_path)
+
+  if fileinfo ~= nil then
+    self.datas = require "datas.languages"
+  else
+    self.datas = nil
+  end
 end
 
 function LanguageManager:getStringList(library, file)

gamecore/options.lua

@@ -43,7 +43,7 @@ function OptionsManager:reset()
   self.data.video.fullscreen  = false
 
   -- We load the default files
-  self.data.input     = require "datas.inputs"
+  self.data.input     = self:getInputDefaultData()
 
   -- TODO: have a way to auto-load a language according to the OS ?
   self.data.language  = "en"
@@ -67,6 +67,31 @@ function OptionsManager:getFile(absolute)
   return filepath
 end
 
+function OptionsManager:getInputDefaultData()
+  local _path = "datas/inputs.lua"
+  local datas = {}
+  local fileinfo = love.filesystem.getInfo(_path)
+
+  if fileinfo ~= nil then
+    datas = require "datas.inputs"
+  else
+    datas = {}
+  end
+
+  return datas
+end
+
+function OptionsManager:getPlayerInputData(id)
+  local _playerInputData = self.data.input[id]
+
+  if _playerInputData == nil then
+    _playerInputData      = {}
+    _playerInputData.keys = {}
+  end
+
+  return _playerInputData
+end
+
 function OptionsManager:write()
   local data = self:getData()