Editing SMMU (section)

===Swirly flats===
The console variable <code>r_swirl</code>, when set to 1, will stop all animated flats from animating and instead give them a 'swirling' effect similar to the quake water effect. However, this affects all flats and for some animated flats it doesn't look right.

You can specify when to use the 'swirl' effect on individual animated flats using the [[EDF animations]], the Boom [[ANIMATED]] resource or [[ANIMDEFS]]. For Boom ANIMATED, you can use the <code>SWANTBLS.EXE</code> program to create your own set of animated flats. If the delay between flat frames is set greater than 65535, that flat will be given the swirl effect.