WARNING ABOUT 'BLOCKED' BREACH SETTING FOR WALLS
It seemed like a good idea at the time... but having looked at a settlement problem someone sent me recently (thank you

) I've realised that not only does the setting stop the ai attacking that wall section with artillery (useful) it also stops the ai using ladders/towers on that wall section too (distinctly not useful).
As background normal 'wall' main objects have an indicator setting of '96' in one column of the object table in .world - there was one example of a blocked breach wall (it could be destroyed but didn't let you in to settlement) in stone_fort_c which had the indicator '32' in that column instead, which we thought just stopped ai artillery attack, so I talked wilddog into including it as an option in the latest IWTE releases... unfortunately although the human player can bring up ladders, the ai apparently doesn't.
have tried using '64' as the indicator instead which seemed like next most logical one, with that setting the ai does bring ladders, but unfortunately it makes the object invisible and they don't climb the ladder
(see demo pic on stone_fort_c)
However there does seem to be a possibly more convoluted way of getting things to work involving one invisible wall with the '64' setting which the ai will attack with ladders, and a visible wall as a separate one group object without breach that humans can see, and which has the deployment block part - the invisible one needs to be slightly bigger than the visible version to keep the ai side functioning... (shown working in 2nd pic)
will try and do a better explanation after a bit more checking that there isn't some other problem with this
oh and for future reference - I think ai will only bring ladders up to one 'wall' section per deployment block - if you set up a custom battle with ai attacking vanilla city with lots of ladders that behaviour is apparent - not sure if there's anything in the battle ai which effects that, but should be born in mind if you're planning long sections of perimeter as one deployment block.
