Click the green flag. Use number keys for menu. You can choose one of 4 standard layouts but you can also edit the layout. It also offers 5 different engine costumes to choose from. Change the speed to start the engine moving. The points (switches) can be set by clicking on them - if no green curve is shown they're set for straight ahead. If I'm using the username block when you run it it's just so I can change the code without affecting how it appears for anyone else until I'm ready to reveal changes.
All my own work although I see others have done similar things. (In particular see http://scratch.mit.edu/projects/557945/ which I suspect influenced me more than I'd realised!) Track is stored in a list so engine can look ahead and work out what it has to do and stays on the track better that way. Thoughts on what to add - - carriages/wagons - more than one train (need collision handler) - scenery options - sound - allowing layouts to be saved and reloaded My main aim is to create something that can then be modified for puzzles, games etc - whether by me or another user. Some of the above will only be added in a later version with this version still available for simpler remixing.
