[Jezze]

Sense I think there are alot of people here who probably has programmed one or two adventuregames I wonder if anyone could recommend any good links where I can find information on mathematical algorithms often used in adventure games especially about how to asign where a character can/can't walk and how to move the player if you press on a certain point... thanx!

[Mnemonic]

Google for A* ("a-star") or Dijkstra's Algorithm; those are the two most common algorithms used in games (and not just adventure games).

[Halloko]

Originally Posted by Jezze

..where I can find information on mathematical algorithms often used in adventure games especially about how to asign where a character can/can't walk and how to move the player if you press on a certain point... thanx!

I'd recommend using navigation meshes to specify where your characters can walk.
Then you can just use whatever search algorithm you fancy, be it A*, Breadth First Search, etc.

www.gamedev.net has plenty of pathfinding tutorials and so does Google

Good luck