How to move a minecart

Ok, so I have a load of rails and their co-ords stored in a .yml, and i've set up the plugin so that when the cart comes within 3 blocks of them, they spawn, and when the cart has passed them by, they despawn again. But I needed to get the cart moving forward. But this is my problem.

I have tried:

Code:JAVA

Vector facing = nexttrack.getDirection();
PlayerButtonEvent.minecart.setVelocity(facing);

Which works along straights, but the cart seems to grind to a halt whenever it gets to a corner or upwards slope. I have tried various different solutions from around the place, but none of them seem to work...

I'd really appreciate any help, and please bear in mind i'm fairly new to this!

C'mon, someone must know how to do this - I've managed to code the whole plugin but I can't get the carts to move x.x



EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Im no fan of repetitive bumping, but surely someone must know how to work a minecart...?

 

A bump for you my friend

 

To the top...

 

Probably not as common as you'd think. Anyway, let me at least give you a jumping off point, might want to check out this source for some reference, perhaps PathFinding specifically.
https://github.com/bergerkiller/TrainCarts/tree/master/src/com/bergerkiller/bukkit/tc