/// <summary>
/// method allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// set the background's initial position
_backgroundPosition = new Rectangle(0, 0, 640, 512);
// create a ball object
string spriteName = "Ball";
Vector2 position = new Vector2(300, 200);
Vector2 velocity = new Vector2(2, 2);
_ball = new Ball(Content, spriteName, position, velocity);
// _ball = new Ball(Content, "Ball", new Vector2(300, 200), new Vector2( 2, 2));
// make the ball active
_ball.Active = true;
base.Initialize();
}
/// <summary>
/// method to move the ball forward and bounce off the sites of the screen
/// </summary>
/// <param name="_ball">ball object</param>
private void UpdateBallMovement(Ball _ball)
{
if (_ball.Active)
{
BounceOffWalls();
_ball.Position += _ball.Velocity;
}
}
/// <summary>
/// spawn the ball at a random location on the screen
/// </summary>
/// <param name="ball">ball object</param>
private void Spawn(Ball ball)
{
// find a valid location to spawn the ball
int ballXPosition = _randomNumbers.Next(WINDOW_WIDTH - CELL_WIDTH);
int ballYPosition = _randomNumbers.Next(WINDOW_HEIGHT - CELL_HEIGHT);
// set ball's new position and reverse direction
ball.Position = new Vector2(ballXPosition, ballYPosition);
ball.Velocity = -ball.Velocity;
}
/// <summary>
/// method allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// set the background's initial position
_backgroundPosition = new Rectangle(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
// create a ball object
string spriteName = "Ball";
Vector2 position = new Vector2(300, 200);
Vector2 velocity = new Vector2(2, 2);
_ball = new Ball(Content, spriteName, position, velocity);
// _ball = new Ball(Content, "Ball", new Vector2(300, 200), new Vector2( 2, 2));
// make the ball active
_ball.Active = true;
// make mouse visible on game
this.IsMouseVisible = true;
base.Initialize();
}
/// <summary>
/// method to determine if the mouse is on the ball
/// </summary>
/// <returns></returns>
private bool MouseOnBall(Ball ball)
{
bool mouseClickedOnBall = false;
// get the current state of the mouse
MouseState mouseState = Mouse.GetState();
// mouse over ball
if ((_mouseNewState.X > ball.Position.X) &&
(_mouseNewState.X < (ball.Position.X + 64)) &&
(_mouseNewState.Y > ball.Position.Y) &&
(_mouseNewState.Y < (ball.Position.Y + 64)))
{
mouseClickedOnBall = true;
}
return mouseClickedOnBall;
}
/// <summary>
/// method allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// set the background's initial position
_backgroundPosition = new Rectangle(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
// create a list of Ball objects
_balls = new List<Ball>();
// add balls to the list
Ball ball01 = new Ball(Content, "Ball", 32, new Vector2(300, 200), new Vector2(4, 4));
_balls.Add(ball01);
Ball ball02 = new Ball(Content, "Ball", 32, new Vector2(100, 400), new Vector2(-2, -2));
_balls.Add(ball02);
Ball ball03 = new Ball(Content, "small_ball", 16, new Vector2(400, 400), new Vector2(4, -4));
_balls.Add(ball03);
// make the balls active
ball01.Active = true;
ball02.Active = true;
ball03.Active = true;
// make mouse visible on game
this.IsMouseVisible = true;
base.Initialize();
}
/// <summary>
/// method to calculate the distance between the centers of two balls
/// </summary>
/// <param name="ball1">first ball</param>
/// <param name="ball2">second ball</param>
/// <returns></returns>
public double DistanceBetweenBalls(Ball ball1, Ball ball2)
{
double distance;
distance = Vector2.Distance(ball1.Center, ball2.Center);
return distance;
}
/// <summary>
/// method to bounce ball of walls
/// </summary>
public void BounceOffWalls(Ball ball)
{
// ball is at the top or bottom of the window, change the Y direction
if ((ball.Position.Y > WINDOW_HEIGHT - ball.Radius * 2) || (ball.Position.Y < 0))
{
ball.Velocity = new Vector2(ball.Velocity.X, -ball.Velocity.Y);
}
// ball is at the left or right of the window, change the X direction
else if ((ball.Position.X > WINDOW_WIDTH - ball.Radius * 2) || (ball.Position.X < 0))
{
ball.Velocity = new Vector2(-ball.Velocity.X, ball.Velocity.Y);
}
}
/// <summary>
/// method to change the velocity of the balls when they collide
/// </summary>
/// <param name="balls">list of all balls</param>
/// <param name="checkBall">ball being check</param>
public void BounceOffBalls(List<Ball> balls, Ball checkBall)
{
foreach (Ball ball in balls)
{
if (ball != checkBall)
{
if (DistanceBetweenBalls(checkBall, ball) < checkBall.Radius + ball.Radius)
{
checkBall.Velocity = -checkBall.Velocity;
}
}
}
}
/// <summary>
/// method to bounce ball of walls
/// </summary>
//public void BounceOffWalls(Ball ball)
//{
// // ball is at the top or bottom of the window, change the Y direction
// if ((ball.Position.Y > (WINDOW_HEIGHT - CELL_HEIGHT) - ball.Radius * 2) || (ball.Position.Y < CELL_HEIGHT))
// {
// ball.Velocity = new Vector2(ball.Velocity.X, -ball.Velocity.Y);
// }
// // ball is at the left or right of the window, change the X direction
// else if ((ball.Position.X > (WINDOW_WIDTH - CELL_WIDTH) - ball.Radius * 2) || (ball.Position.X < CELL_HEIGHT))
// {
// ball.Velocity = new Vector2(-ball.Velocity.X, ball.Velocity.Y);
// }
//}
public void BounceOffWalls(Ball ball)
{
Rectangle ballRectangle = new Rectangle((int)ball.Position.X, (int)ball.Position.Y, (int)(ball.Radius * 2), (int)(ball.Radius * 2));
foreach (Wall wall in _walls)
{
Rectangle wallRectangle = new Rectangle((int)wall.Position.X, (int)wall.Position.Y, CELL_WIDTH, CELL_HEIGHT);
if (Rectangle.Intersect(ballRectangle, wallRectangle) != null)
{
MessageBox(new IntPtr(0), "I hit a wall!!", "Debug Message", 0);
}
}
//// ball is at the top or bottom of the window, change the Y direction
//if ((ball.Position.Y > (WINDOW_HEIGHT - CELL_HEIGHT) - ball.Radius * 2) || (ball.Position.Y < CELL_HEIGHT))
//{
// ball.Velocity = new Vector2(ball.Velocity.X, -ball.Velocity.Y);
//}
//// ball is at the left or right of the window, change the X direction
//else if ((ball.Position.X > (WINDOW_WIDTH - CELL_WIDTH) - ball.Radius * 2) || (ball.Position.X < CELL_HEIGHT))
//{
// ball.Velocity = new Vector2(-ball.Velocity.X, ball.Velocity.Y);
//}
}
