public void AddBall()
{
Ball ball = new Ball() { Radius = BallRadius };
ball.Randomize(_graphicsDevice.Viewport.Bounds);
_balls.Add(ball);
}
public void Initialize()
{
_whiteTex = SolidColorTexture(_graphicsDevice, Color.White);
Ball ball1 = new Ball() { Radius = BallRadius };
ball1.Randomize(_graphicsDevice.Viewport.Bounds);
_balls = new List<Ball> { ball1 };
}
private void UpdateBall(Ball ball, GameTime gameTime)
{
Vector2 newPosition = ball.Position + ball.Direction * (float)gameTime.ElapsedGameTime.TotalSeconds;
Vector2 newDirection = ball.Direction;
if (newPosition.X < _graphicsDevice.Viewport.X + ball.Radius) {
newPosition = new Vector2(_graphicsDevice.Viewport.X + BallRadius, newPosition.Y);
newDirection = new Vector2(newDirection.X * -1, newDirection.Y);
}
if (newPosition.X >= _graphicsDevice.Viewport.X + _graphicsDevice.Viewport.Width - ball.Radius) {
newPosition = new Vector2(_graphicsDevice.Viewport.X + _graphicsDevice.Viewport.Width - ball.Radius, newPosition.Y);
newDirection = new Vector2(newDirection.X * -1, newDirection.Y);
}
if (newPosition.Y < _graphicsDevice.Viewport.Y + ball.Radius) {
newPosition = new Vector2(newPosition.X, _graphicsDevice.Viewport.Y + ball.Radius);
newDirection = new Vector2(newDirection.X, newDirection.Y * -1);
}
if (newPosition.Y >= _graphicsDevice.Viewport.Y + _graphicsDevice.Viewport.Height - ball.Radius) {
newPosition = new Vector2(newPosition.X, _graphicsDevice.Viewport.Y + _graphicsDevice.Viewport.Height - ball.Radius);
newDirection = new Vector2(newDirection.X, newDirection.Y * -1);
BottomHitCount++;
}
ball.Position = newPosition;
ball.Direction = newDirection;
Rectangle paddleRect = new Rectangle((int)_paddleX, _graphicsDevice.Viewport.Height - PaddleBottomMargin, PaddleWidth, PaddleHeight);
if (paddleRect.Intersects(ball.Bounds))
Bounce(ball, gameTime);
}
private void Bounce(Ball ball, GameTime gameTime)
{
Vector2 newPosition = ball.Position - ball.Direction * (float)gameTime.ElapsedGameTime.TotalSeconds;
Vector2 newDirection = new Vector2(ball.Direction.X, ball.Direction.Y * -1);
ball.Position = newPosition;
ball.Direction = newDirection;
}