The Node_Transform property is what you want. Specifically, the three first items in it control XYZ position (the two Headers and the first Entry).

In order to animate these, however, you need to delve a little deeper. The basic pattern is Header, HFlag, HTail or Entry, EFlag, ETail. You'll want to add SHeader and SFlag or SEntry and SFlag after the STail/ETail line. SHFlag/SFlag is just zero, never seen a use for anything else. SHeader/SEntry contains the interesting stuff in the form of a repeating pattern <time>, <position>, <ease in>, <ease out>. If you want the animation to repeat (be sure to make it loop properly!) set the HTail/ETail to 16, otherwise 1 will do.

This is an example from the Discovery jumpdrive effect I created, it's a fairly intricate example but should give you a rough idea of what's happening. The emitter is doing corkscrews around the Z axis.



Hope this helps!

It's a little hard to explain, but as far as I can tell they work exactly like animation easing in 3ds Max if you know what I'm talking about. They're essentially giving the rate (be it meters per second or degrees per second) of movement at the keyframe you have defined. Ease in defines how fast it should be coming in, while ease out defines how fast it should be going out.

The thing to note is that if you define no ease in/ease out (ie leave them at zero), the animation will actually slow down to a standstill at each keyframe. In order to have smooth motion, you need to calculate rates. This is why all of them have rates in the effect I've posted.

Uh, as I said, it's a rate, so it's just whatever speed you want it to go at that that keyframe?

Interesting topic about ale reapetition... So I've a question too. Is it possible to have an effect that reapet only 2 or 3 time. Just to know if it is possible to have longer timed laser.