blod

Great! Thanx!

Comparing my problem and your answer, I conclude that such permanent projectile spawner is impossible without ACS, so I said "no" to myself. But thanks for the answer. By the way, what is the purpose of such spawner/turret, I described earlier (tech interior decorating).

So the answer is no (( I actually wanted to make a decorative spawner on my map, which would just shoot fireballs into the sky. I thought it could be done in UDMF without a script. Maybe someone has an example of ACS for this?

How do I make a turret that starts firing when the player enters the sector and stops firing when the player leaves the sector? Is it possible in UDMF without using the script? I know about the existence of SpawnProjectile actions and 'Actor enters sector' thing, but how to combine them correctly?