I'm trying to make a 2D fighting game in HTML5(somewhat like street fighter). So basically there are two players, one AI and one Human. The players need to have animations for the body movements. Also, there needs to be some collision detection system. I'm using createjs for coding but to design models/objects/animations, I need some other software.

So I'm looking for a software that can:

1. easily make custom animation of 2d objects. The objects structure(skeleton etc.) will be same once defined but need to be defined once.

2. Can export the animations and models in a js readable format(preferably json)

   Collision detection can be done easily after the exported format is loaded in a game engine.

For point 1, I'm looking for some generic skeleton based animation. Sprite-sheet based animations will be difficult for collision detection.