You should say 'last rank' instead of 'camp', as 'camp' usually means the area where the pieces start. Which is 3 ranks here, and also the promotion zone. So both Kings cound be inside the camp (i.e. have equal distance 0 to it), while one is still closer to last rank than the other.
It is also not clear what happens if the Kings have equal distance to the last rank. Does the game end anyway, as a draw? Or should play continue until one of the Kings gets closer than the other?
You should say 'last rank' instead of 'camp', as 'camp' usually means the area where the pieces start. Which is 3 ranks here, and also the promotion zone. So both Kings cound be inside the camp (i.e. have equal distance 0 to it), while one is still closer to last rank than the other.
It is also not clear what happens if the Kings have equal distance to the last rank. Does the game end anyway, as a draw? Or should play continue until one of the Kings gets closer than the other?