For promotion you say "reaches or leaves the camp". What if the move stays entirely within the camp?
You realize that under the specified rules one can win by perpetual checking, because that turns into checkmate at the moment where the only evasion would become a (4th) repetition? This is generally perceived as very unsatisfactory. It might be better to exempt check evasions from the repetition rule; this will still prevent perpetual repetion, but always puts the burden to deviate on the checking player, rather than on the one that happened to repeat first.
For promotion you say "reaches or leaves the camp". What if the move stays entirely within the camp?
You realize that under the specified rules one can win by perpetual checking, because that turns into checkmate at the moment where the only evasion would become a (4th) repetition? This is generally perceived as very unsatisfactory. It might be better to exempt check evasions from the repetition rule; this will still prevent perpetual repetion, but always puts the burden to deviate on the checking player, rather than on the one that happened to repeat first.