Bounce ball battle player and boss circle object.

Auto scroll stage move at left side. Also boss chase at same direction.
Player can move by using W,A,S,D, keys and dash to moving direction shift key.
Shield slowly rotate on mouse direction and it can push forward as using left click.
If ball reflected by shield, owner changed enemy to player. player's ball can attack enemy object.
There are many obstacles such as bumpy wall and random size asteroid.