example_code.lua

--here lay examples of code that should be placed in 
--the FinalUpdate of OldMod (see readme) and in the NewMod

--this one is good while we still have on_save event
--OldMod
game.on_load(function()
    game.show_message_dialog{text="WARNING. \nYou're using migration update of mod Natural Evolution"..
        "\nThis version is intended only to provide means of carrying your savegame over to modular version of the mod"..
        "\nPlease save the game in order to initialize the process of transfer"}
end)
game.on_save(function()
    --mod's own code
    --...
    --migration
    remote.call("ModMigrator","make_chapter","Nat_Ev_En")--begin transition process for one of new modules (enemies)
    remote.call("ModMigrator","store","Nat_Ev_En",{ArtifactCollectors=global.ArtifactCollectors})--pack values 
    --transitions for other modules may take place below    
    --after all data is obtained
    game.show_message_dialog{text="Mod Natural evolution is now prepared to be migrated over to Natural Evolution Modular "..
        "\nPlease disable the old mod, enable new ones and restart the game"}
    
end)
--NewMod
game.on_load(function()
    --mod's own code
    --...
    --migration
    if remote.interfaces.ModMigrator and not global.updated then
        temp=remote.call("ModMigrator","fetch","Nat_Ev_En")
        if temp and temp.ArtifactCollectors then
            global.ArtifactCollectors= temp.ArtifactCollectors
            global.next_check=game.tick+interval
            global.next_collector= 1
            global.updated=true
            if global.itemCollectors ~= nil then
                game.on_event(defines.events.on_tick, function(event) ticker(event.tick) end)
            end
        end
        game.show_message_dialog{text="Migration from Natural Evolution to Natural Evolution Modular is complete"..
        "\nIf everything is working correct, you may now disable ModMigrator and overwrite the savegame if you wish."}
    end
end)