How to make a train with Amelie

Once you have all your needed objects, start to recreate the path over the track with a Null called in our example "Path". The speed of this null should be as constant as possible (all the trick is based on this, so the better is your constant speed, the better movement you will have).

Add another null (called Distance in our example) which will control the distance the train should travel at a given time. This null will be used to decided when to let the train run or stop.

Then place a piece of your train over the track, cone it, and start to build the Amelie expression. The trick is to use the clone number and use it to read different position over our "Path".