Originally posted by lalala: I build a normal base with entrance, but after extending it with more extra lines of defense to fall back, now its to large for the zombies to find the entrance, so they dig into the wall. And I'm not talking about a base of 100x100 but very compact, so from length 7 width ~7 it went to length 18 and width 8. They can't path like 5-7 blocks further, which the extension exceeded apparently.
The pathing AI is not uniform across the spectrum of zombies. Some see longer paths than others and all of them can "forget" the path and go into destruction mode at random times. If you damage them they will stop destruction mode and begin pathing again. This is all done by design so that the zombies aren't too predictable. In A17 when the new pathing was brand new all the zombies could see perfect long pathways straight to the player and this created a lot of problems. Since A17 the perfect knowledge of the AI has been dumbed down and made variable so that you get some zombies pathing to you and others not and others generally destroying things around them.
What this means is that if your base has a small perimeter then most zombies will see a path long enough to follow a predictable course to get to you. You can use this to set traps and a killing corridor and all but those that go into destruction mode will find their way to this path. If you make your base perimeter large enough then not all zombies will see a path long enough to get to the path you intend for them to follow. They will start making a shorter path that is the weakest defense that they can see.
So for a large perimeter base you will have to move around to different points and clean up incursions by those zombies that can't see all the way around the base to the corridor that you wanted them follow. If you want more predictability and to be able to confront the horde from one point of defense then you will need to have a smaller perimeter and all the zombies will funnel to corridor you made. It's a choice and you can build to get the result you want. It can be a normal base, an upgraded POI, a copied base from YouTube, or just running around in an open field with no base at all as some enjoy doing.
And the annoying part is that you figure it out only when you're hit by the horde night.
What you call annoying is for a great many others the single most enticing reason they play the game. Analyzing the results of a horde night and then making adjustments to your defenses is the very definition of fun for many people. That doesn't change it being annoying for you, admittedly, but it does mean it is unlikely to change as that gameloop of discovering the weaknesses of your defenses once you're hit by the horde and then spending the next seven days fixing it for the next one is by design and not accident or unintended.
Because the AI has now a lot of condition checks that are not "transparent to the player" there is no predictable way to build a normal base and know that it will work, because moving just one block or standing in a certain port vs. another might differ because of hidden condition X and Y. The pathing distance I mentioned as an example is not the only criterium and sometimes, for unknown reasons length is not a problem suddenly, but something else. Or it luckily works.
It isn't that complex. Zombies have a variable degree of ability to sense a pathway to you. That variability is the length of the path that they are aware of. Zombies that can only see a shorter path will choose the best one they can but it might ignore weaker options that are further away than they can sense while others right next to them can see those weaker options and so those will go to that best option. So you get variable behaviors on horde night.
In addition to that zombies can randomly forget their path and go into random destruction mode plus zombies that cannot sense any path to you at all will also go into destruction mode.
As I stated above, if you want more predictability then build a smaller base so that most zombies will be able to sense a clear path to you. It will surely be the path you have devised for them so that you can kill them with traps and bullets and explosives.
The only predictable way to build a base that works is to copy cat known, working cheese builds...
No, you can build a base with a smaller footprint all on your own without copying anyone-- and how cheesy it is may be open to debate and just personal sensibilities. If you truly want to see what 100% predictability is like then boot up A17 and play through some horde nights. That alpha the horde night zombies had perfect information and were 100% predictable. Maybe you'll really like playing those horde nights. I really enjoyed A17 but I do have to admit that the zombies were like machines. They were scary with how well they could path to you. I remember sitting on a ledge of the hospital and spawning radiated wights on the street below and taking a few shots at them. They would run into the hospital and run the maze through several stories and break through the wall right next to my ledge to get me. Play A17 for predictability...