protected override void LoadContent()
{
_spriteBatch = new SpriteBatch(GraphicsDevice);
// Create a camera instance and limit its moving range
_camera = new Camera(GraphicsDevice.Viewport) { Limits = new Rectangle(0, 0, 3200, 600) };
// Create 9 layers with parallax ranging from 0% to 100% (only horizontal)
_layers = new List<Layer>
{
new Layer(_camera) { Parallax = new Vector2(0.0f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.1f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.2f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.3f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.4f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.5f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.6f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(0.8f, 1.0f) },
new Layer(_camera) { Parallax = new Vector2(1.0f, 1.0f) }
};
// Add one sprite to each layer
_layers[0].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer1") });
_layers[1].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer2") });
_layers[2].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer3") });
_layers[3].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer4") });
_layers[4].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer5") });
_layers[5].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer6") });
_layers[6].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer7") });
_layers[7].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer8") });
_layers[8].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer9") });
// Add a few duplicates in different positions
_layers[7].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer8"), Position = new Vector2(900, 0) });
_layers[8].Sprites.Add(new Sprite { Texture = Content.Load<Texture2D>("Layer9"), Position = new Vector2(1600, 0)});
}
public Layer(Camera camera)
{
_camera = camera;
Parallax = Vector2.One;
Sprites = new List<Sprite>();
}