// controlling the ball bounch direction after collide with the bar
public void ballBounceDirection(ref BallSprite ball, ref UserControlSprite player, Game game )
{
// if the ball hit the left side of the screen
if (ball.position.X < 0)
{
//If the X == 0 && Y == 0
if (ball.getSignOfBallX() == 0 && ball.getSignOfBallY() == 0)
{
// Set ball X && Y to 0
ball.resetSignOfBall();
// Set X == 1 && Y == -1
ball.setSignOfBall(1, -1);
}
else
{
ball.resetSignOfBall();
ball.setSignOfBall(1,1);
}
// reverse the X direction of the ball
ball.speed.X *= -1;
}
// if the ball hit the right side of the screen
else if (ball.position.X > game.Window.ClientBounds.Width - ball.frameSize.X)
{
//If the X == 0 && Y == 0
if ( ball.getSignOfBallX() == 0 && ball.getSignOfBallY() == 0)
{
ball.resetSignOfBall();
ball.setSignOfBall(1,-1);
}
else
{
ball.resetSignOfBall();
ball.setSignOfBall(-1,1);
}
// reverse the X direction of the ball
ball.speed.X *= -1;
}
// if the y position of the ball hit the top of the screen
else if (ball.position.Y < 0)
{
//If the X == -1 && Y == -1
if ( ball.getSignOfBallX() < 0 && ball.getSignOfBallY() < 0)
{
ball.resetSignOfBall();
ball.setSignOfBall(-1,1);
}
//If the X == 1 && Y == -1
else if (ball.getSignOfBallX() > 0 && ball.getSignOfBallY() < 0)
{
ball.resetSignOfBall();
ball.setSignOfBall(1,1);
}
// reverse the Y direction of the ball
ball.speed.Y *= -1;
}
// if the ball collide with bar
if (ball.collisionRect.Intersects(player.collisionRect))
{
// if the bar is stationary
// reverse the Y direction of the ball
if (player.getSignOfBarSpeed() == 0)
ball.speed.Y *= -1;
// if the bar is comning to the right
else if (player.getSignOfBarSpeed() > 0)
{
// If the X == 1 && Y == 1
if (ball.getSignOfBallX() > 0 && ball.getSignOfBallY() > 0)
{
// reverse the Y direction of the ball
ball.speed.Y *= -1;
}
// if the sign of the ball, x and y, are both 0
else if (ball.getSignOfBallX() == 0 && ball.getSignOfBallY() == 0)
{
// reverse the Y direction of the ball
ball.speed.Y *= -1;
}
else
{
// reverse the direction of the ball
ball.speed *= -1;
}
ball.resetSignOfBall();
}
// if the bar is comning to the from the left, bounce the ball back to the left
else if (player.getSignOfBarSpeed() < 0)
{
//If the X == -1 && Y == 1
if (ball.getSignOfBallX() < 0 && ball.getSignOfBallY() > 0)
// reverse the Y direction of the ball
ball.speed.Y *= -1;
else if (ball.getSignOfBallX() == 0 && ball.getSignOfBallY() == 0)
// reverse the Y direction of the ball
ball.speed.Y *= -1;
else
// reverse the direction of the ball
ball.speed *= -1;
}
ball.resetSignOfBall();
}
}
protected override void LoadContent()
{
spriteBatch = new SpriteBatch(Game.GraphicsDevice);
// instantiate Util class
util = new Util();
front = Game.Content.Load<SpriteFont>("Front");
explosionImage = Game.Content.Load<Texture2D>(@"Images/explosion");
// Set Bar at middile of the screen
putBarAtMiddleX = (float)(( Game.Window.ClientBounds.Width - playerFrameSizeX ) >> 1);
// Set Bar at the Bottom
putBarAtBottomY = (float)( Game.Window.ClientBounds.Height - (playerFrameSizeY << 1));
// Set ball at the middle of the screen
putBallAtMiddleX = (float)(( Game.Window.ClientBounds.Width - ballFrameSizeX ) >> 1);
// Set ball on top of the bar
putBallOnTopBarY = putBarAtBottomY - (float)ballFramSizeY;
// Create the fireball
ball = new BallSprite(
Game.Content.Load<Texture2D>( @"Images/FlameBall" ),
new Vector2( putBallAtMiddleX, putBallOnTopBarY ),
new Point( ballFrameSizeX, ballFramSizeY ),
0,
new Point(0,0),
new Point(6,8),
Vector2.Zero);
// Create the bar
player = new UserControlSprite(
Game.Content.Load<Texture2D>( @"Images/bar" ),
new Vector2( putBarAtMiddleX, putBarAtBottomY ),
new Point( playerFrameSizeX, playerFrameSizeY ),
10,
new Point(0, 0),
new Point(1,1),
new Vector2(7,0));
// load the bricks
util.LoadBricks(Game, ref spriteBricksList,
Game.Window.ClientBounds.Width, Game.Window.ClientBounds.Height,
brickLength,brickWidth, ref numOfBricks);
base.LoadContent();
}
// Reset the ball to the middle of the screen
public void resetBallPositionMiddle(ref BallSprite ball, float putBallAtMiddleX, float putBallOnTopBarY)
{
// the previous speed is not 0, set the speed to 0
if (ball.speed.X != 0 || ball.speed.Y != 0)
{
// set ball speed to 0
ball.speed = Vector2.Zero;
// put the ball on top of the bar in the middle of the screen
ball.position = new Vector2(putBallAtMiddleX, putBallOnTopBarY);
}
}