public void Begin(SpriteBlendMode blendMode, SpriteSortMode sortMode, SaveStateMode stateMode, Matrix transformMatrix)
{
//to respect order Begin/Draw/end
if (isRunning)
{
throw new InvalidOperationException("Begin cannot be called again until End has been successfully called.");
}
if (stateMode == SaveStateMode.SaveState)
{
saveState = new StateBlock(this.GraphicsDevice);
}
spriteBlendMode = blendMode;
this.sortMode = sortMode;
if (sortMode == SpriteSortMode.Immediate)
{
applyGraphicsDeviceSettings();
}
isRunning = true;
}
/// <summary>Updates the Xen Application (if the game uses fixed time steps) and then calls the application to draw</summary>
public override void Draw(GameTime gameTime)
{
if (this.stateBlock == null)
{
this.stateBlock = new StateBlock(game.GraphicsDevice);
}
if (game.IsFixedTimeStep && UpdateEvent != null)
{
UpdateEvent(gameTime, this);
}
this.stateBlock.Capture();
if (DrawEvent != null)
{
DrawEvent(gameTime, this);
}
this.stateBlock.Apply();
base.Draw(gameTime);
}
protected override void Initialize()
{
content = new ContentManager(Services, "Content");
// Load all trees in the Content/Trees folder
string[] files = Directory.GetFiles("Content/Trees", "*.xnb", SearchOption.TopDirectoryOnly);
foreach (string filename in files)
{
string assetName = filename.Substring("Content/".Length, filename.Length - "Content/.xnb".Length);
Profiles.Add(content.Load<TreeProfile>(assetName));
ProfileNames.Add(Path.GetFileName(assetName));
}
profileIndex = 0;
// Create the wind animator
wind = new WindStrengthSin();
animator = new TreeWindAnimator(wind);
// Create the ground plane and an effect for it
groundPlane = new Quad(GraphicsDevice, 10000, 10000);
groundEffect = new BasicEffect(GraphicsDevice, new EffectPool());
groundEffect.Texture = content.Load<Texture2D>("Textures/Grass");
groundEffect.TextureEnabled = true;
// Create a camera
Camera = new Camera();
Camera.Position = new Vector3(4000, 4000, 4000);
Camera.Target = new Vector3(0, 2000, 0);
Camera.AspectRatio = GraphicsDevice.Viewport.Width / (float)GraphicsDevice.Viewport.Height;
CameraOrbitAngle = 0.0f;
CameraPitchAngle = -10.0f;
CameraDistance = 5000.0f;
// Enable mipmaps
GraphicsDevice.SamplerStates[0].MipFilter = TextureFilter.Linear;
// Store the initial renderstate
block = new StateBlock(GraphicsDevice);
block.Capture();
Initialized = true;
UpdateTree();
Application.Idle += new EventHandler(Application_Idle);
}