Very simple Hockey obstacles game

I have uploaded a image trying to describe with more details. SPECIFICATIONS: The ball is hit by either player Players can only hit the ball to mid- field The faster you hit the ball faster advances There are two goals , you can score a goal in either of your opponent will have to be reflected the score There will be several levels of difficulty : easy normal difficult impossible The adversary is a machine , the higher the level of difficulty is harder to win There will be nine obstacles as indicated in the image that make it more difficult to score a goal, the ball bounced off each. I want the graphics are simple but the theme is similar starwars (eg lines or balls ) as the picture attached (lasers)