is it implemented using Box2d or using properties of different tiles when using a tiled map ?? also can i abandon the sprite sheet idea and make animation of game character using Libgdx ??? also if you can post some tutorials that would be great 
is it implemented using Box2d or using properties of different tiles when using a tiled map ?? also can i abandon the sprite sheet idea and make animation of game character using Libgdx ??? also if you can post some tutorials that would be great