here my thoughts about what is allowed (it's law that I obey, not official server rules):
Overall
- if you have weapon sheathed, you have to be warned (commanded to do something, i.e. leave). If you disobey command, you can be killed.
- if you have weapon in hands, you are prepared - anyone can kill you without warning.
Examples:
1. A enter area -> B said him to leave (or any other command) -> A ignore or unsheathe weapon-> B can kill him
2. A enter area with weapons in hands -> B can kill him
3. A (with sheathed weapon) kick B -> B should warn A -> if A kick again or unsheathe weapon, B can kill him
4. A (with unsheathed weapon) kick B -> B can kill him
5. A approach to B with weapon unsheathed -> B can kill him
6. A aim with ranged weapon at B -> B can kill him
It pretty much cover all hostile interactions between players.