StateManager lib

stateManager.lua

local OBJDEF = { varsion = 1.0 }

local JSON = (loadfile "JSON")()

local function exploreTable(table, resultTable)
	local varCount = 0
	if resultTable == nil then
		resultTable = {}
	end
	for k,v in pairs(table) do
		if(type(v) == "table") then
			resultTable[k] = exploreTable(v, resultTable[k])
			varCount = varCount + 1
		end
		if type(v) == "number" or type(v) == "string" then
			resultTable[k] = v
			varCount = varCount + 1
		end
	end
	if varCount ~= 0 then
		return resultTable
	else
		return
	end
end

function OBJDEF:saveState(stateName, globalTable)
	fs.makeDir("states")
	local file = fs.open("states/"..stateName, "w")
	file.write(JSON:encode(exploreTable(globalTable)))
	file.flush()
	file.close()
end

local function restoreTable(table, saveTable)
	for k,v in pairs(saveTable) do
		if type(v) == "table" then
			if table[k] == nil then
				table[k] = v
			else
				restoreTable(table[k], saveTable[k])
			end
		end
		if type(v) == "number" or type(v) == "string" then
			table[k] = v
		end
	end
end

function OBJDEF:loadState(stateName, globalTable)
	local file = fs.open("states/"..stateName, "r")
	local state = file.readAll()
	file.close()
	restoreTable(globalTable, JSON:decode(state))
end

function OBJDEF.__tostring()
   return "StateManager"
end

OBJDEF.__index = OBJDEF

function OBJDEF:new(args)
   local new = { }

   if args then
      for key, val in pairs(args) do
         new[key] = val
      end
   end

   return setmetatable(new, OBJDEF)
end

return OBJDEF:new()