Never Never Never

Never Never Never let the red ball touch the walls.

There are 50 levels in this game. The red ball is the striker and can be used to strike the green ball. Tap the screen once to move the striker. Tap it again to change the direction. The direction changes clock wise. If you touch the walls, the game is over. So be careful to change direction only when needed. If you strike the green ball with the red ball, the game progresses and once there are no green balls left you move to the next level. The number of green balls increase with every level. How far can you go ?