OUCH! Well that is going to be a problem...
http://manual.conitec.net/aentity-x.htmThe first idea that comes to mind to solve that is having a second vector that represents sub-areas.
So when the player x exceeds 1000000 (of area 0,0,0) he is considered to be in the next area and x will be -1000000 (in area 1,0,0)
Not too sure, I'll have to think about it and see if I end up using a method like this, or come up with a better solution, or trash the infinite world idea if it is too problematic.
Any ideas are welcome!