[2021] Zombies can't destroy wooden spikes on stairways??

Originally posted by Lord-Knight Fandragon: Zombies seem to be entirely to predictable. Did a bloodmoon yesterday and they all wanted in my front door somethin' fierce. The entire force ran around my whole base and tried busting in the front door. I guess all my saw traps are in the wrong spot. I should simply have them sitting in front of my door and not spread around my building's perimeter.

Actually it's more likely the way that you set up your traps. If you build, for example, a 2 tall 5 thick wall of wooden spikes on every side of your wall, the zombies will just walk around because they perceive that to be actual solid blocks, and that wall+ those 5 rows of wooden spikes = more total HP than the door which is not trapped at all.

Similarly, if you just stacked all those spikes around the door assuming the zombies to rush the door, they'll instead attack the walls as you've stacked so much HP around that door that the door is not an acceptable answer.

Door HP is halved in calculating zombie pathing, for sure (Doors can be open, or closed at any given time, and so the HP calculation is halved to represent this), but that doesn't mean you can't make all other avenues so undesirable that the zombies would rather walk around; or even make the door itself unviable.

Spikes should be set in a ditch that zombies can fall into, or at most 1 tall above the ground being walked upon so that zombies will think they can jump on top of it- Two or taller and it becomes percieved as a wall, due to zombies just seeing the spikes as blocks.

It's a tower defense game- You need to set up a path for the zombies to follow that takes them through your traps without fully obstructing them and causing them to seek another path.