Freight Car Forwarder in rust

The Freight Car Forwarder is based on Tim O'Connor's Freight Car Forwarder originally written in QBASIC. I first ported the program to a pure Tcl/Tk application. Then for better performance, I recoded the low-level guts (mostly heavy data indexing logic) to a C++ class library, using the STL to implement the various aggregate collections of objects, retaining Tcl/Tk for the GUI.

This program is a port of the C++ class library, with a console (terminal) main program to access the algorithms and data structures.

This program is used to generate switch lists for realistic operations on a model railroad layout. The switch lists direct operators of trains to drop off and pickup cars as they operate trains on the layout. This makes operating the layout more interesting than just running the trains endlessly around an oval or something.

This crate can either be used as a complete runable program using the included main.rs and its support modules, or it can be used as a library crate, calling the methods in system.rs to load and process a system data set in a specific way. I am not sure if I want to attempt to code a GUI in rust and I am not sure how (or even if it is possible) to build a rust library into a shared library that Tcl can load and access. My prefered GUI coding language is Tcl/Tk.

If someone else is interested in creating a GUI for this crate, I would be interested in hearing about it.