It was serious miscalculation for me to use python as a development platform.
The problem lies in the python threading model which is, basically, not real thread model, but rather emulation.
Basically, I'm unable to run all pathfinding routine in background thread (pyskiller use astar pathfinding a lot)
It mean, I have to port *WHOLE* pyskiller code onto another language/platform.
It's a bit frustrating, not to say more.