in earlier versions PCLN would not spawn paticles in directions that are blocked, now it does. If you surround PCLN with FILT it will still spawn photons in all directions.
Problem is: i had some nifty lasers using the blocking feature and now it's gone and they screwed.
Solutions(edited):
Add some variable which will store directions in which pcln spawn things. and fortunately there's 8 directions so it can be stored in 1byte :)
something like: !set dir pcln 01011001
other Shitty solutions
1. Create another copy of PCLN like LPCL(lockable praticle cloner)
2. Create one more variable to store blocking state, but not temp cuz temp(or how its called) is used to store on/off state and is very useful.
3. Also if no one could prove new unblocking pcln mode has any advantages over old one, PCLN could be reverted back.
The trick was that hacked pcln with negative life surrounds normal pcln, thus allowing create very efficient laser. Simply saying you could shoot a shape made of photons in one shot without teleporters and stuff, and have it heated to 9000°
Still having photons spawned in all directions at once consumes a lot of temperature. It would be convenient to control direction of spawning without having diamond block.