int MoveBall()
{
	if(ballx+dx<0)//ball hit left wall

	{/*the ball hit the left wall, so we can assume that it had a negative dx*/
		for(int pixels = dx+1; pixels <= 0; pixels++)
		{/*Here, we start by testing to see if moving the ball one less pixel than dx
		 will still put us off the screen.  If it will, we continue subtracting one until 
		 it stays onscreen or until we discover that the ball is already in contact with
		 the wall and must rebound*/
			if(ballx+pixels<0)
			{
			}
			else
			{
				ballx += pixels;
				break;
			}
		}
		dx = -dx;
	}
	else if(ballx+BALL_WIDTH+dx>=1024)//ball hit right wall
	{/*the ball hit the right wall, so we can assume that it had a positive dx*/
		for(int pixels = dx -1; pixels>0; pixels--)
		{//for an explanation of why this part should work(in theory), see above
			if(ballx+pixels+BALL_WIDTH>1024)
			{
			}
			else
			{
				ballx += pixels;
				break;
			}
		}
		dx = -dx;
	}
	else
	{
		ballx += dx;
	}
	if(bally+dy<0)//ball hit top
	{/*since the ball hit the top, we can assume that dy has a negative value*/
		for(int pixels = dy + 1; pixels <= 0; pixels++)
		{
			if(bally+pixels<0)
			{
			}
			else
			{
				bally+=pixels;
				break;
			}
		}
		dy = -dy;
	}
	else if(bally+BALL_HEIGHT+dy>740)//ball hit line parrallel to top of paddle

	{//since the ball hit the bottom, dx is positive

		for(int pixels = dy -1; pixels>=0; pixels--)
		{
			if(bally+pixels+BALL_HEIGHT>740)
			{
			}
			else
			{
				bally+=pixels;
				break;
			}
		}
		dy = -dy;
	}
	else
	{
		bally+=dy;
	}

	return 1;
}