Again minor patches

Out of interest, I decided to continue finishing the game to a normal state. 

In honor of this, many algorithms and the behavior of opponents were rewritten, no more roomba-kamikaze rush from the south hall! The health bar has stopped distorting when decreasing. The algorithm for searching for interactive objects on the map has been optimized.  The player's and enemies sprites don't randomly flip horizontally anymore (I hope). 

In addition to all this, there were a lot of small changes that I am too lazy to describe and I successfully forgot them, or they are technical and do not affect the gameplay in any way. 

I know about the problem with different sound volume, I'm not a sound designer, but I'll try to do something for the next patch.

For the Nikopoland! For the Amendment!