title: Is there any open source AI engine?
body: <p>I am searching for an open source AI engine implemented in C/C++, ActionScript or Java with no success. Do you know any open source implementation? </p>
  
  <p>Update: Thanks for answers! I had no idea how vast the AI field is. I am working on a sample application. I want to add intelligent behavior over a physics engine. I need some sort ai engine designed for games. </p>