Are there any resources about finding the shortest path with straight lines instead of using tiles? I am still using a tile based system for my game but i want the player and mobs "detached" from the tiles. The image might illustrate things better.
![pathfinding.jpg](http://img513.imageshack.us/img513/7301/pathfinding.jpg)
The path will never get too long since the player can only click as far as the screen goes and it should not calculate past a wall if, let's say a door through it, is outside the screen. Mobs however should chase the player like this for let's say 2 or 3 screens away.
I am thinking of drawing a line between location and destination and where it crosses collidable object insert a waypoint there and move it around until. But since i can come up with many problems with this technique i honestly have no clear idea where i should start.
So if anyone has a good resource about this subject i'd love to dig into it.