/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update(GameTime gameTime)
{
if (!((PongGame)Game).GameInProgress)
{
return;
}
float timeLapse = (float)gameTime.ElapsedGameTime.Milliseconds;
_position += _speed * timeLapse;
_position.X = MathHelper.Clamp(_position.X, _minX, _maxX);
_position.Y = MathHelper.Clamp(_position.Y, _minY, _maxY);
if (_position.Y == _minY || _position.Y == _maxY)
{
_bounce.Play();
_speed.Y *= -1;
}
if (_position.X == _minX)
{
((PongGame)Game).ScoreKeeper.Score(Player.Two);
_position = _startPosition;
_speed.X *= -1;
}
if (_position.X == _maxX)
{
((PongGame)Game).ScoreKeeper.Score(Player.One);
_position = _startPosition;
_speed.X *= -1;
}
PaddleCollision collision = DidHitPaddle();
switch (collision)
{
case PaddleCollision.Left:
case PaddleCollision.Right:
_bounce.Play();
_speed.X *= -1;
break;
case PaddleCollision.Top:
case PaddleCollision.Bottom:
_bounce.Play();
_speed.Y *= -1;
break;
default:
break;
}
base.Update(gameTime);
}
void FixedUpdate()
{
if (lastBounceThisFrame != null)
{
bounce();
}
else if (reflectionThisFrame != null)
{
reflect();
}
lastBounceThisFrame = null;
penultimateBounceThisFrame = null;
reflectionThisFrame = null;
}
// Sees what part of the Paddle collises with the ball (if it does)
public bool Collides(Ball ball, out PaddleCollision typeOfCollision)
{
typeOfCollision = PaddleCollision.None;
// Make sure enough time has passed for a new collisions
// (this prevents a bug where a user can build up a lot of speed in the ball)
if (DateTime.Now < (_lastCollisiontime.Add(_minCollisionTimeGap)))
{
return(false);
}
// Top & bottom get first priority
if (ball.CollisionArea.Intersects(TopCollisionArea))
{
typeOfCollision = PaddleCollision.WithTop;
_lastCollisiontime = DateTime.Now;
return(true);
}
if (ball.CollisionArea.Intersects(BottomCollisionArea))
{
typeOfCollision = PaddleCollision.WithBottom;
_lastCollisiontime = DateTime.Now;
return(true);
}
// And check the front
if (ball.CollisionArea.Intersects(FrontCollisionArea))
{
typeOfCollision = PaddleCollision.WithFront;
_lastCollisiontime = DateTime.Now;
return(true);
}
// Nope, nothing
return(false);
}
// Modifies the ball state based on what the collision is
private void _processBallHitWithPaddle(PaddleCollision collision)
{
// Safety check
if (collision == PaddleCollision.None)
{
return;
}
// Increase the speed
_ball.Speed.X *= _map((float)_random.NextDouble(), 0, 1, 1, 1.25f);
_ball.Speed.Y *= _map((float)_random.NextDouble(), 0, 1, 1, 1.25f);
// Shoot in the opposite direction
_ball.Speed.X *= -1;
// Hit with top or bottom?
if ((collision == PaddleCollision.WithTop) || (collision == PaddleCollision.WithBottom))
{
_ball.Speed.Y *= -1;
}
// Play a sound on the client
_playSoundEffect("ballHit");
}
public void RegisterReflection(PaddleCollision collision)
{
reflectionThisFrame = collision;
}
public void RegisterBounce(PaddleCollision collision)
{
penultimateBounceThisFrame = lastBounceThisFrame;
lastBounceThisFrame = collision;
}
