/// <summary>
/// Start a new pass to draw sprites
/// </summary>
/// <remarks>
/// Once a pass has begin, you cannot change attributes or draw polygons
/// until it has ended.
/// </remarks>
/// <param name="blend">Blending mode for combining sprites</param>
public void BeginSpritePass(BlendState blend, Camera camera)
{
// Check that state invariant is satisfied.
Debug.Assert(state == DrawState.Inactive, "Drawing state is invalid (expected Inactive)");
state = DrawState.SpritePass;
// Set up the drawing canvas to use the appropriate blending.
// Deferred sorting guarantees Sprites are drawn in order given.
transform = camera.TransformMatrix;
spriteBatch.Begin(SpriteSortMode.Deferred, blend, null, null, null, null, transform);
}
public GameEngine()
{
canvas = new GameCanvas(this);
factory = new ContentFactory(new ContentManager(Services));
camera = new Camera(canvas.Width, canvas.Height);
}