[Pierre-Marie Baty]

no, that's the difference. They will NOT and never try to go there if they've never seen anybody going there, or if they never went there themselves.

My navigation mesh is 2 layers high, that's the main difference with the official CS bot.

The first layer is the global mesh, that all bots share in common. It tells the bots what are the surfaces a player can stand on (but NOT can reach).

The second layer is the individual cognitive map, that each bot discovers for itself. It tells the bot where and of what quality are the passage points between two areas of the global mesh.

The first layer can be seen as the construction map of a house, with all the areas being the rooms in the house. But this map has no doors represented on it.

The second layer, of which each bot builds its own copy, can be seen as an addition to that map, with the doors between these rooms represented on it.

that's the KEY difference between my navmesh and Michael's one.