The implementation of the game on Iphone [closed]

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I will implement a game in which the ball must move across the screen, and its board should reflect that. Example: http://itunes.apple.com/us/app/blocksclassic/id286136632?mt=8

Only in my case the board in the shape of a trapezoid

If the ball hits the side of the trapeze, he should rebound in the direc开发者_如何学JAVAtion of 180 degrees. Which way do I implement it?

Thank you in advance if you need something clarified please ask questions.

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Well, I can point you in the direction of Cocos2D for iphone, it has bridges to good physics and uses the device functionality quite well.

But in future please try being more specific in your questions...