Middle points for LOS - good idea. I'll do it. I have to think also about hex numeration - could solve problems with scenario-making.
Thanks a lot for ideas.
What is VTT?

About the game:
Tactical Troops is simple and dynamic tactical boardgame placed in military-SF setting (like Aliens or Starship Troopers). Aim of the game is to complete tasks on closed base complex. Base (map) is made of connected boards (presented in first post).

Each player controls 2 to 5 groups of troopers (1, 2 or 3 soldiers in group). He has 3 AP (action points) every turn. He can:
- move to adjacent hex (1AP)
- shoot (2AP)
- throw grenade (explosive, gas or flash-bangs) (2AP)
- regroup (1AP)
- set a mine (2AP)
- guard (3AP)

Mechanics are based on d6 roll. Every shooting soldier in group - one d6. So when group of 3 soldiers shoots player rolls 3d6. Every dice is separate "hit or miss" test. Every hit (success) kills one trooper.
Success is determined by distance between shooter and target:
1 hex - 2+
2 hex - 3+
3 hex - 4+
4 hex - 5+
5 hex - 6
(2+ means 2 or above)

Additionally there are monsters crawling in base corridors. They are controlled by AI - set of simple rules that they must follow. Eg. go to the closest group, or go to the biggest group. Disputational movements are solved by die rolling.

Base example:
Click image for larger version. 

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