Am I in the right forum ? Sorry to ask you this, now i was trying to make my object moving in 3d environment, the object will move to the point clicked by mouse, -if there is other object in the way, my object will automatically avoiding it and countinue to the point clicked. -if there is other object in the way and blocking all the way, my object will stop move how I'm gonna do to make this ? I have try ask a few people, and the answer always the same : "use store path for the object movement". if i'm using it, isn't my object is not freely move anymore ? or what ? (i'm not really understand in store path) any suggestion ??? [Edited by - be17_17y on June 23, 2005 6:13:18 AM]

You would simply use the A* path finding algorithm to see what route to take, or simply to stay still if there's no path to the goal. How you implement A* is the question, since in a 3D environment, you don't have the simple tiles you'd want (unless you're using a heightmap?).
This is where you have to become creative and add some tricks into your engine that allows the map to be routed by hand. You could imagine this as a 3D model being the map, and having a different structure (sort of a spiderweb) covering it. You would use each connectionpoint in the spiderweb as node for your A*.
And yes, this requires some extra programming and/or content creation when creating the map.

By the by, if you could explain what sort of map you're using, a more specific answer would probably pop out. Implementing path finding algorithms are very dependent on the terrain to travel on.

you're right, i'm using heightmap