There will be defensetowers and Bunkers for the Infantry.
I dont know about the walls. They actually look nice, but this also complicates the
buildup a bit. Maybe I place fixed Walls/Camps, where the player can Build
his Building into, but is not required to. This way a camp is less vunerable, as
it only has some entrances.

There are no nodes in the classical sense. (path-entities with a free x,y,z position)
This Pathfinding knows only one thing:
I have a 100x100 Grid. Every unit can only move from a passable gridsquare to the other.
Buildings and Mountains block gridpoints.

There are no scans or traces, it is just about handeling a 2D passability grid.
Units bum of each other with an aditional function. The cloder they are to another unit, the
more they push this unit away.