public bool CheckForPlayerHit(Ball ball, Player player)
{
double playerTop = height - player.Height + 1;
if (ball.Center.Y + ball.Radius >= playerTop)
{
double leftMost = player.PosX - player.SpriteWidth / 2;
double rightMost = player.PosX + player.SpriteWidth / 2;
if (ball.Center.X >= leftMost && ball.Center.X <= rightMost) return true;
if (ball.Center.Y < playerTop)
{
double distance = 0;
if (ball.Center.X < leftMost) distance = Math.Sqrt(Math.Pow(ball.Center.X - leftMost, 2) + Math.Pow(ball.Center.Y - playerTop, 2));
else distance = Math.Sqrt(Math.Pow(ball.Center.X - rightMost, 2) + Math.Pow(ball.Center.Y - playerTop, 2));
if (distance <= ball.Radius) return true;
else return false;
}
else
{
if (ball.Center.X < leftMost) return ball.Center.X + ball.Radius >= leftMost;
else return ball.Center.X - ball.Radius <= rightMost;
}
}
else return false;
}
public void CollideWithBall(Ball other)
{
if (!IntersectWithBall(other)) return;
Tuple<int, int> velocityA = VelocityComponents();
Tuple<int, int> velocityB = other.VelocityComponents();
int newVelAx, newVelAy, newVelBx, newVelBy;
newVelAx = (int)Math.Round(((1.0 * velocityA.Item1 * (mass - other.mass) + 2.0 * other.mass * velocityB.Item1) / (mass + other.mass)));
newVelAy = (int)Math.Round(((1.0 * velocityA.Item2 * (mass - other.mass) + 2.0 * other.mass * velocityB.Item2) / (mass + other.mass)));
newVelBx = (int)Math.Round(((1.0 * velocityB.Item1 * (mass - other.mass) + 2.0 * mass * velocityA.Item1) / (mass + other.mass)));
newVelBy = (int)Math.Round(((1.0 * velocityB.Item2 * (mass - other.mass) + 2.0 * mass * velocityA.Item2) / (mass + other.mass)));
speed = (int)Math.Sqrt(1.0 * Math.Pow(newVelAx, 2) + 1.0 * Math.Pow(newVelAy, 2));
other.speed = (int)Math.Sqrt(1.0 * Math.Pow(newVelBx, 2) + 1.0 * Math.Pow(newVelBy, 2));
angle = (int)Math.Round((180.0) / Math.PI * AngleFromVelocity(Tuple.Create(newVelAx, newVelAy)));
other.angle = (int)Math.Round((180.0) / Math.PI * AngleFromVelocity(Tuple.Create(newVelBx, newVelBy)));
Update();
}
private static int screenWidth = 800; // Width of Canvas screen
#endregion Fields
#region Methods
public static void Main(string[] args)
{
CDrawer canvas = new CDrawer(screenWidth, screenHeight); // Initializes new Canvas window
Random rng = new Random(); // Random number generator
Ball example = new Ball(screenWidth, screenHeight, 25, 150, 100, 10, 1, 350);
Ball example2 = new Ball(screenWidth, screenHeight, 25, 300, 300, 1, 1, 300);
for (int i = 0; i < 10000; i++)
{
canvas.AddEllipse(example.centerX - example.radius, example.centerY - example.radius, 2 * example.radius, 2 * example.radius);
canvas.AddEllipse(example2.centerX - example2.radius, example2.centerY - example2.radius, 2 * example2.radius, 2 * example2.radius);
System.Threading.Thread.Sleep(5);
canvas.Clear();
example.Update();
example.CollideWithWall();
example2.CollideWithWall();
example.CollideWithBall(example2);
}
Console.ReadKey();
}
public static void Main(string[] args)
{
ManualResetEvent Terminated = new ManualResetEvent(false);
Initialize();
WriteLine("Press ESC to close the application when running.");
OnKeyDown += (sender, e) =>
{
if (e.Key == Key.Escape || (e.Key == Key.C && e.Control))
Terminated.Set();
};
// Sound borrowed from: http://www.freesound.org/people/davidou/sounds/88451/
int BoingSound = UploadAudioSample(GetResourceWavAudio("88451__davidou__boing.wav"));
int BallTexture = AddSpriteTexture(GetResourceBitmap("Ball.png"), new System.Drawing.Point(25, 25), System.Drawing.Color.Black, true);
System.Random Rnd = new System.Random();
Ball[] Balls = new Ball[20];
int i;
for (i = 0; i < Balls.Length; i++)
{
Balls[i] = new Ball(
CreateSprite(Rnd.Next(50, RasterWidth - 50), Rnd.Next(50, RasterHeight - 50), BallTexture),
Rnd.Next(500000) - 250000, BoingSound);
}
OnUpdateModel += (sender, e) =>
{
foreach (Ball Ball in Balls)
Ball.Move();
};
while (!Terminated.WaitOne(1000))
;
Terminate();
}
private void ChangeBallDirection(Ball ball, int outOfBounds)
{
if ((outOfBounds & ((int)OutOfBounds.Left | (int)OutOfBounds.Right)) != 0)
{
ball.Direction = new Vector2(-ball.Direction.X, ball.Direction.Y);
}
if ((outOfBounds & ((int)OutOfBounds.Top | (int)OutOfBounds.Bottom)) != 0)
{
ball.Direction = new Vector2(ball.Direction.X, -ball.Direction.Y);
}
}
private bool CheckCollision(Ball ball, Laser laser)
{
bool horizontal = IsBetween((int)ball.Position.X, laser.CollisionRect.Left - (int)ball.Radius, laser.CollisionRect.Right + (int)ball.Radius);
bool vertical = IsBetween((int)ball.Position.Y, laser.CollisionRect.Top - (int)ball.Radius, laser.CollisionRect.Bottom + (int)ball.Radius);
return horizontal && vertical;
}
public bool IntersectWithBall(Ball other)
{
double euclideanDistance = Math.Sqrt(1.0*(Math.Pow(centerX - other.centerX, 2) + Math.Pow(centerY - other.centerY, 2)));
return euclideanDistance <= radius + other.radius ? true : false;
}
public void BallDivide(Ball ballToDevide)
{
if (ballToDevide.Radius >= 10)
{
double oldRadius = ballToDevide.Radius;
Point oldCenter = ballToDevide.Center;
Point oldDirection = ballToDevide.Direction;
Color oldColor = ballToDevide.Color;
double oldSpeed = ballToDevide.Speed;
double leftBallRadius = oldRadius / 2;
Point leftBallCenter = new Point(oldCenter.X - oldRadius / 2, oldCenter.Y);
Point leftBallDirection = new Point(-Math.Abs(oldDirection.X), oldDirection.Y);
Color leftBallColor = oldColor;
double leftBallSpeed = oldSpeed;
Ball leftBall = new Ball(leftBallRadius, leftBallCenter, leftBallDirection, leftBallColor, leftBallSpeed);
double rightBallRadius = oldRadius / 2;
Point rightBallCenter = new Point(oldCenter.X + oldRadius / 2, oldCenter.Y);
Point rightBallDirection = new Point(Math.Abs(oldDirection.X), oldDirection.Y);
Color rightBallColor = oldColor;
double rightBallSpeed = oldSpeed;
Ball rightBall = new Ball(rightBallRadius, rightBallCenter, rightBallDirection, rightBallColor, rightBallSpeed);
balls.Remove(ballToDevide);
mainGrid.Children.Remove(ballToDevide);
balls.Add(leftBall);
mainGrid.Children.Add(leftBall);
balls.Add(rightBall);
mainGrid.Children.Add(rightBall);
}
else
{
mainGrid.Children.Remove(ballToDevide);
balls.Remove(ballToDevide);
}
}
