Pass on information about current TTC of attack

[sandorstormen]

The simulator should output the amount of TTC cost so far for the episode of the simulation.

[mrkickling]

Should be a property per attacker agent, right? We could have a property method for AttackerState that sums over all values in num_attempts. Would that be sufficient?

[sandorstormen]

Should be a property per attacker agent, right? We could have a property method for AttackerState that sums over all values in num_attempts. Would that be sufficient?

No, not if TTC is disabled. We have the two reward modes sampled TTC and expected TTC.