Like the Title says, how exactly can you implement swimming like in Zetsubou no Shima? For example how can I make a simple pond where the player and zombies can swim in?

I've tried creating a pond by drawing a brush with a water texture on it, as well as another brush with the water clip on it, but I think there's more to it. For one, Your vision is un-altered while underwater, and looks almost like you're floating. The zombies seem to have a hard time getting into the water and when then do, they just walk on the ground instead doing the weird swimming thing they do on Zetsubou. Also, how on Earth does this work with dogs?

just wondering if anyone could do a tutorial on water, or if anyone has figured anything out about it.

I feel ya

For water you need a water texture and a water_clip. You can get the underwater vision by creating a PBG box in the water. Then have its radius to cover the area you want to be blurry. You can change the radius by messing with blend_max/min and size_max/min KVPs.
You should then have something like this:


I don't think the engine support zombie swimming by default. You may have to create a script for it. You could, for example, check if a zombie is in water and have it play a swimming anim from ZNS. No idea how you could do dogs though.

Hope this helps.