Game Development Reference
2. Once you have posiioned the red builder brush correctly, right-click the volume
buton on the let toolbar and pick UTWaterVolume .
Now, move the red builder brush away to reveal the pink water volume below. If you
do not see it, you might have toggled volumes off with the O key on the keyboard.
Your water is now swimmable.
What just happened?
So, we have now completed creaing our surface for water, which is also swimmable, but
what if we want to make it so that we can swim underwater? Maybe you want to put a
special power up underwater for players to grab. I will now show you how to create this
underwater paricle efect.