/// <summary>
/// Проверка на столкновение мяча с прямоугольным объектом
/// </summary>
/// <param name="ball"></param>
/// <param name="rect"></param>
/// <returns></returns>
private bool CheckRect(Ball ball, AbstractRectangle rect)
{
var position = new Point();
position.X = ball.Position.X + ball.Size.Width;
position.Y = ball.Position.Y + ball.Size.Height;
var rectangle = new Rect(rect.Position, rect.Size);
return(rectangle.Contains(position));
}
/// <summary>
/// Проверка характера столкновения мяча с прямоугольным объектом
/// </summary>
/// <param name="ball"></param>
/// <param name="rect"></param>
/// <returns></returns>
private void HandleCollision(Ball ball, AbstractRectangle rect)
{
var speed = ball.Speed;
speed.X = GetBallSpeedX(ball, rect);
speed.Y *= -1;
ball.Speed = speed;
if (rect is Platform)
{
ChangeSpeed(ball, rect as Platform);
}
}
/// <summary>
/// Получение скорости мяча по Х
/// </summary>
/// <param name="ball"></param>
/// <param name="rect"></param>
/// <returns></returns>
private double GetBallSpeedX(Ball ball, AbstractRectangle rect)
{
var ballX1 = ball.Position.X;
var ballX2 = ball.Position.X + ball.Size.Width;
var ballX0 = (ballX1 + ballX2) / 2;
//Мяч ударился об угол о______ || _______о
if (!(ballX0 >= rect.Position.X && ballX0 <= rect.Position.X + rect.Size.Width))
{
return(ball.Speed.X * (-1));
}
// __o____ || _______
if (ballX0 >= rect.Position.X && ballX0 <= rect.Position.X + rect.Size.Width / 3)
{
return(Math.Abs(ball.Speed.X) * (-1) - 0.2);
}
// ______ || _____o__
if (ballX0 >= rect.Position.X + rect.Size.Width / 3 * 2 && ballX0 <= rect.Position.X + rect.Size.Width)
{
return(Math.Abs(ball.Speed.X) + 0.2);
}
return(ball.Speed.X);
}