Quote: "Basically, is possible to move the already emitted particles?"
You wouldn't want to move the already emitted particles unless you were specifically wanting to for certain effects.
Like Mr. Valentine said, you would want to move the emitter.
First you would need to get the Towers X, Y and Z Positions
I havnt opened up DBP in a long time so excuse my errors.
X# = Object X Position(Tower)
Y# = Object Y Position(Tower)
Z# = Object Z Position(Tower)
Position Particle Emission (1,X#,Y#,Z#)
Edit:
Just saw how old this post was
Beta Test Age of Knights:https://play.google.com/apps/testing/com.CrazyProgrammerProductions.my_AgeOfKnights
Download JellyFish Dive:https://play.google.com/store/apps/details?id=com.CrazyProgrammerProductions.my_JellyFishSwim