What's allowed/disallowed during migration?

[apriori]

What cannot be accessed through migration lua-scripts? Are "global" and "game" available? Are entities valid? Are entities (including hidden ones) without prototypes still accessible?

[Nexela]

migration/migrations.json -> Used to replace 1 prototype with another

migration/migrations.lua -> Full access to game NO access to global

on_configuration_change -> access to everything

on_load -> special case, No game, Read only global

on_init -> full access to everything

[apriori]

on_configuration_change -> access to everything

Looks like not to everything, or I'm wrong in my code:

Code: Select all

script.on_configuration_changed(Migrate())

function Migrate() 
  local version = game.active_mods["Teleportation"] -- attempt to index global 'game' (a nil value)
end

[Nexela]

2 Problems

script.on_configuration_changed(Migrate) --Remove the () your want to refrence the function not call it

Second, move the migrate function ABOVE the script.on_configuration_changed