If they get within a certain distance of a turret, they'll go for that turret. Nothing's changed in this regard since 0.12. They've always targeted pollution sources and they've always stumbled upon turrets by accident rather than intentionally.againey wrote:Regarding how biter behavior feels more aggressive than before, I'm guessing it might have to do with what they choose to attack. In the past, my experience was that they tended to run for the nearest gun turret, and so the gun turrets saw a lot of action, but they're designed for that, so it was all okay. But now the biters just bee-line for whatever piece of pollution they don't like, and start attacking the first thing they run into. Even if they're just barely out of gun turret range. So you really do have to spam turrets everywhere.
What has changed is which source of pollution they'll choose to attack. In 0.12, they would always go to the chunk with the highest amount of pollution (more specifically, they'd start a hill-climbing algorithm from their current position until they reached a local maximum). In 0.13, they choose to attack pollution sources near their starting position. In other words, they'll go for your perimeter or an outpost rather than the heart of your factory.
They do. Again, no change since 0.12 here.againey wrote:Walls don't force the biters to run along them looking for easier access to the source of their ire.
They do attempt to go around the obstacle first. This behaviour, again, is the same as in 0.12, although there may be some difference in how soon they give up due to some changes I made to their "getting unstuck" logic. Further tweaks to this logic may happen in the future.againey wrote:I've noticed a lot of those square-ish pile of stones that drop from the big rocks when I finally get the tank and start driving around. Apparently even when biters are on their way to attack the base, enough of them run into the big rocks and are so easily distracted that they have to destroy the rock before they carry on.
I can appreciate that biters are too stupid to plan advanced attacks or anything. But I think that just about any aggressive animal, when faced with an obstacle, will first attempt to go around the obstacle before giving up and attacking the obstacle itself.