UpdateGeneralAnim

This update method is called by LateUpdate. It handles updates to the sprite's sortingorder, the line if applicable and extrasnims.

The sorting order of the sprite is set to the viewport point of the transform's z * 1000.0 which ensures the order respects the actual depths as seen by the camera.

If there is a line, the positions of it are set to be from the own line's transform to the second position in the LineRenderer's position array.

Finally, if there are extraanims, all their speed are set to the anim's speed if they didn't match already.