Callback: Refitted capacity callback

Refitted capacity callback (15)

This callback is used when a vehicle is refitted, to find the new capacity. It is a 15 bit callback since TTDPatch 2.0.1 alpha 40, and allows return values up to 7EFF=32511 units of cargo.

Vehicle variable B9 (for a VarAction2) will be set to the new, climate-specific cargo type (column 3, type B in the cargo type list), or to FF when only checking whether the vehicle is refittable.

Unlike regular refitted capacities (including those from callback 36), the return value is not subject to the usual division of capacities for cargoes other than passengers on trains and planes, instead the capacity is used exactly as returned by the callback. See also the summary page about  vehicle refitting.