I'm actively making a highly detailed DOOM WAD and recently realized that it was missing something: Wavy Water. How exactly does one achieve this? I've searched, searched, and searched, yet I still can't find any information let alone anything loosely related to this topic. If anyone out there is blessed with the knowledge on how exactly one achieves this, I respectfully beg you to teach me.
P.S. If you don't know what I'm talking about, I'm referring to the smooth water effect used if popular WAD's such as Winter's Fury, Knee Deep in ZDOOM, etc.. If you still aren't aware of what I'm talking about, then look up either of the WAD's listed and view the liquid in the maps.