Small Heretic mace sphere maintenance. Enables low gravity after a countdown elapses.
Spawn: FX02 AB 4 A_MacePL1Check loop
If counter 0 is 0 does nothing. Otherwise it decrements 4 points from it. If it's still positive, it will do nothing. Otherwise it will reset it to 0 and do the following things on the actor:
- Set the LOGRAV flag;
- Reduce horizontal velocity to 7;
- Halve current vertical velocity (if nonzero).