internal bool CollidesWith(Ball ball)
{
Rectangle ballRect = new Rectangle((int)ball.X, (int)ball.Y, Ball.Width, Ball.Height);
Rectangle myRect = new Rectangle((int)this.X, (int)this.Y, Paddle.Width, Paddle.Height);
return ballRect.Intersects(myRect);
}
internal void HandleBallCollision(Ball ball)
{
float distX, distY;
if (ball.Velocity.X > 0)
{
if (ball.Velocity.Y > 0)
{
// Collision from top left
distX = ball.X + Ball.Width - this.X;
distY = ball.Y + Ball.Height - this.Y;
}
else
{
// Collision from bottom left
distX = ball.X + Ball.Width - this.X;
distY = this.Y + Brick.Height - ball.Y;
}
}
else
{
if (ball.Velocity.Y > 0)
{
// Collision from top right
distX = this.X + Brick.Width - ball.X;
distY = ball.Y + Ball.Height - this.Y;
}
else
{
// Collision from bottom right
distX = this.X + Brick.Width - ball.X;
distY = this.Y + Brick.Height - ball.Y;
}
}
if (distX > distY)
ball.Velocity = new Vector2(ball.Velocity.X, -ball.Velocity.Y);
else
ball.Velocity = new Vector2(-ball.Velocity.X, ball.Velocity.Y);
}
internal void HandleBallCollision(Ball ball)
{
ball.Velocity = new Vector2(ball.Velocity.X, -ball.Velocity.Y);
}
private void CheckBallCollisions(Ball ball, GameTime gameTime)
{
if (this.Paddle.CollidesWith(ball))
this.Paddle.HandleBallCollision(ball);
for (int i = 0; i < this.Bricks.Count; i++)
{
Brick brick = this.Bricks[i];
if (brick.CollidesWith(ball))
{
// Rebound and remove brick
brick.HandleBallCollision(ball);
if (this.EventAggregator != null)
this.EventAggregator.Publish(new BrickDestroyedEvent(brick));
this.Bricks.Remove(brick);
break;
}
}
}