When already in a /fm gui showing the creation cost of a factory and it is a upgrade, the button to show the setup cost (which we are already viewing) should be replaced with one to go to the upgrade recipe in the predecessor factory. Some of the methods needed for that should already be in the GUI class.
When already in a /fm gui showing the creation cost of a factory and it is a upgrade, the button to show the setup cost (which we are already viewing) should be replaced with one to go to the upgrade recipe in the predecessor factory. Some of the methods needed for that should already be in the GUI class.