You can do this via quest triggers, but I think it will be very buggy.
This is a discussion on PVP Zone within the Rose Online forums, part of the MMO and MMORPG Developments category; Can I create some place of map pvp zone exp. in city is non-pvp but outside city is pvp zone?...
You can do this via quest triggers, but I think it will be very buggy.
Have other ways, but how to make this via quest triggers?
Ofcourse their are other ways, one requires good knowlegde on asm to let the client load some kind of invisible wall and once you go through it your character goes in pvp mode (same via quest triggers).
The other way is with the source, you could some kind of pvp zone code like sevenskies did.
The thing I'm afraid for with quest triggers is, that every one goes into pvp mode once someone get's in the pvp zone.