title: how to detect collision between two sprites in libgdx?
body: <p>i am learning libgdx. i want to create a 2d fps game using libgdx, which is basically no physics environment.  in that case lot of collision will be there (for example lot of bullets hitting multiple objects). i need to check intersecting of every sprite's rectangle with other sprites. in this way there may be thousand sprite's, checking every sprite with other 999 sprites in every time isn't definitely not a good idea. </p>
  
  <ul>
  <li>libgdx has scene2d which has hit detection api's, is that solve my problem? 
  or</li>
  <li>i should use box2d collision detection?
  or</li>
  <li>is there any other way to detect collision in libgdx?</li>
  </ul>