Well, it seems that it may be time to search for a bug. I'm running through Zot 5 right now, so I have to be a bit careful with experiments, but I used a few shots on doorframes. The very first one is this attempt here:
- Draco has a good day.
- LRD1.jpg (118.97 KiB) Viewed 2297 times
With the next LRD (placed on a wall) I got this draconian annihilator to almost dead - they shouldn't have much protection against LRD powered to 89%. He certainly shouldn't be unscathed.
The next shot on the same door frame slightly injured two more draconians ('lightly wounded' and 'moderately wounded'). The next shot on a wall kills one and leaves the other 'severely wounded'. The next shot on the doorframe leaves the severely wounded draconian without further damage and brings another one to 'severely wounded'.
The next shot comes off a wall again - now this one kills one of the severely wounded ones, and does not do any damage to the other one - so this can also happen from a wall. Well, this one has icy armour, so he should be better protected against LRD damage. He even survives another two shots off the wall, with slight further damage. In the end I have to dispatch him with Zero.
Another shot from the door frame heavily injures two draconians. They get killed with a further shot from the wall.
A final test on two more draconians coming through the door:
- One hit, one miss.
- LRD2.jpg (128.97 KiB) Viewed 2297 times
One of the guys is hit heavily by the same shot that leaves the other completely unscathed. This one is a purple draconian storm caller, with a +1 robe of preservation, certainly nothing to protect you reliably against LRD damage.
So, as a resumé, I placed 4 LRDs on the doorframe, and two of them left at least one monster unscathed - both draconians that shouldn't have any kind of special protection. The funny thing is that in both cases of non-damage I did not get any message that no damage was done. In the case of the draconian with the Ice Armour, there was a message that no damage was done when it was hit from the wall ('You feel a surge of power! The wall shatters! The blast of rock fragments hits the white draconian knight but does no damage').
Well, I guess if this is not intended behavior I need to submit a report on Mantis.