There are safeties in the P99, but they are internal. For instance, the trigger system itself is a saftey feature and there is also the striker saftey block, and the decocker on the slide.
The P99 will not fire unless the trigger is pulled to the end of its path, then a saftey block will raise inside the slide and allow the striker to move forward enough to fire the cartridge. Unless the trigger is all the way back, the striker can not hit the primer of the bullet's casing. Even if the striker lets go, as long as the trigger is not all the way back, the striker will hit the saftey block and stop preventing the pistol from firing.
So, no it will not fire if dropped.