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if (bally - radiusball <= boardy + board_height && bally - radiusball > boardy )
        {
            if (ballx >= boardx && ballx <= boardx + board_width)
            {
                if(cornerdistance(boardx,boardy+board_height,ballx,bally)-5<=radiusball || cornerdistance(boardx+board_width,boardy+board_height,ballx,bally)-5<=radiusball || linedistance(boardx,boardy+board_height,boardx+board_width,boardy+board_height,ballx,bally)-5<=radiusball || linedistance(boardx,boardy,boardx,boardy+board_height,ballx,bally)-5<=radiusball || linedistance(boardx+board_width,boardy,boardx+board_width,boardy+board_height,ballx,bally)-5<=radiusball){
                angle = ballangle(boardx, board_width, ballx);
                vx = (int)v * cos(angle * M_PI / 180);
                vy = (int)v * sin(angle * M_PI / 180);
                }
            }
        }