/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
// TODO: use this.Content to load your game content here
//Initialize cannon . Need 5 of this.
background = Content.Load <Texture2D>("background");
//smallBall.velocity = new Vector2(10.1f, 10.1f);
//Draw cannon
cannon = new cannon(Content.Load <Texture2D>("cannon"),
new Vector2(graphics.GraphicsDevice.Viewport.Width / 10, graphics.GraphicsDevice.Viewport.Height / 1.15f));
//Draw small ball
for (int i = 0; i < maxBullet; i++)
{
Bullet[i] = new ball(Content.Load <Texture2D>("cannonball"),
new Vector2(cannon.position.X, cannon.position.Y - 20f), new Vector2(54f, 54f),
graphics.PreferredBackBufferWidth, graphics.PreferredBackBufferHeight);
}
//Draw Alien
float height = 0f;
int column = 0;
for (int i = 0; i < maxAlien; i++)
{
AlienArmy[i] = new alien(Content.Load <Texture2D>("enemy"),
new Vector2(graphics.PreferredBackBufferWidth / 2 - 150 * (column + 1), graphics.PreferredBackBufferHeight / 5 + height), new Vector2(121f, 40f),
graphics.PreferredBackBufferWidth, graphics.PreferredBackBufferHeight);
Console.WriteLine("{0},{1}", graphics.PreferredBackBufferWidth / 2 - 150 * (column + 1),
graphics.PreferredBackBufferHeight / 5 + height);
//Set up grid for alien ship
if (i >= 4 && column >= 4)
{
column = 0;
height = 80f;
continue;
}
column++;
}
//Load sound effect
missleLaunch = Content.Load <SoundEffect>("missilelaunch");
explosion = Content.Load <SoundEffect>("explosion");
}
public void FireBall(ball objectBall)
{
if (!objectBall.ballAlive)
{
//Set ball alive
objectBall.ballAlive = true;
//This allows the cannonball to be shot from the middle of the cannon.
objectBall.position = position - objectBall.center;
//Set velocity and direction of the ball
objectBall.velocity = new Vector2(
(float)Math.Cos(rotation),
(float)Math.Sin(rotation)) * 10f;
}
//Move ball when alive
if (objectBall.ballAlive)
{
objectBall.Move(objectBall.velocity);
}
}