I have a different implementation for a state machine where each method returns a new type instead of setting up a _state variable. Implemented like that the code you posted would be something like:

soldier = new ISoldier(); //An interface for every kind of Soldier States you’d like to have.

soldier = soldier.Kill();
soldier = soldier.PerformShoot();

Even tho I can’t see possible problems with this implementation, I’m not sure if they aren’t hidden somewhere.

Do you think that this implementation is plausible?

State are finite. May be introducing Enum to implement your concrete state implementations. This would give a tier relation between your state implementation.

–danny

- David McClelland (from Houston, TX)