/// <summary>
/// Loads graphics resources needed for the game.
/// </summary>
public override void LoadGraphicsContent(bool loadAllContent)
{
// Initialize the camera
camera = new FirstPersonCamera(GameOptions.CameraAccelerationMagnitude, GameOptions.CameraRotationSpeed,
GameOptions.CameraVelocityDecayRate);
camera.AspectRatio = (float)ScreenManager.GraphicsDevice.Viewport.Width /
(float)ScreenManager.GraphicsDevice.Viewport.Height;
camera.Position = new Vector3(0, GameOptions.TerrainMaxHeight, 0);
camera.Angles = new Vector3(-MathHelper.PiOver2, 0.0f, 0.0f);
if (loadAllContent)
{
// Load the sky box
skyBox = new SkyBox(ScreenManager.Game, ScreenManager.Content, camera);
// Set up the terrain parameters
TerrainQuadTreeParameters parameters = new TerrainQuadTreeParameters();
parameters.HeightMapName = "Content\\Textures\\Heightmap";
parameters.LayerMap0Name = "Content\\Textures\\grass01";
parameters.LayerMap1Name = "Content\\Textures\\rock01";
parameters.LayerMap2Name = "Content\\Textures\\snow01";
parameters.GrassTextureName = "Content\\Textures\\grass";
parameters.MaxHeight = GameOptions.TerrainMaxHeight;
parameters.TerrainScale = GameOptions.TerrainScale;
parameters.MaxScreenSpaceError = 0.075f;
parameters.ScreenHeight = ScreenManager.Game.GraphicsDevice.Viewport.Height;
parameters.FieldOfView = camera.FieldOfView;
parameters.GrassChunkDimension = 30;
parameters.GrassChunkStarSeparation = 266.6f;
parameters.GrassStartFadingInDistance = 4000.0f;
parameters.GrassStopFadingInDistance = 3900.0f;
parameters.WindStrength = 100.0f;
parameters.WindDirection = new Vector4(-1.0f, 0.0f, 0.0f, 0.0f);
parameters.DoPreprocessing = true;
parameters.ComputePerspectiveScalingFactor();
terrain = new TerrainQuadTree(ScreenManager.Game, ScreenManager.Content, parameters);
// Iniialize the water manager
waterManager = new WaterManager(ScreenManager.Game, GameOptions.WaterHeight);
}
}
/// <summary>
/// Loads graphics resources needed for the game.
/// </summary>
public override void LoadGraphicsContent(bool loadAllContent)
{
// Initialize the camera
camera = new FirstPersonCamera(GameOptions.CameraAccelerationMagnitude, GameOptions.CameraRotationSpeed,
GameOptions.CameraVelocityDecayRate);
camera.AspectRatio = (float)ScreenManager.GraphicsDevice.Viewport.Width /
(float)ScreenManager.GraphicsDevice.Viewport.Height;
camera.Position = new Vector3(0, GameOptions.TerrainMaxHeight, 0);
camera.Angles = new Vector3(-MathHelper.PiOver2, 0.0f, 0.0f);
if (loadAllContent)
{
// Load the sky box
skyBox = new SkyBox(ScreenManager.Game, ScreenManager.Content, camera);
// Set up the terrain parameters
TerrainQuadTreeParameters parameters = new TerrainQuadTreeParameters();
parameters.HeightMapName = "Content\\Textures\\Heightmap";
parameters.LayerMap0Name = "Content\\Textures\\grass01";
parameters.LayerMap1Name = "Content\\Textures\\rock01";
parameters.LayerMap2Name = "Content\\Textures\\snow01";
parameters.GrassTextureName = "Content\\Textures\\grass";
parameters.MaxHeight = GameOptions.TerrainMaxHeight;
parameters.TerrainScale = GameOptions.TerrainScale;
parameters.MaxScreenSpaceError = 0.075f;
parameters.ScreenHeight = ScreenManager.Game.GraphicsDevice.Viewport.Height;
parameters.FieldOfView = camera.FieldOfView;
parameters.GrassChunkDimension = 30;
parameters.GrassChunkStarSeparation = 266.6f;
parameters.GrassStartFadingInDistance = 4000.0f;
parameters.GrassStopFadingInDistance = 3900.0f;
parameters.WindStrength = 100.0f;
parameters.WindDirection = new Vector4(-1.0f, 0.0f, 0.0f, 0.0f);
parameters.DoPreprocessing = true;
parameters.ComputePerspectiveScalingFactor();
terrain = new TerrainQuadTree(ScreenManager.Game, ScreenManager.Content, parameters);
// Iniialize the water manager
waterManager = new WaterManager(ScreenManager.Game, GameOptions.WaterHeight);
}
}
/// <summary>
/// Loads a new set of parameters from an XML file.
/// </summary>
public static TerrainQuadTreeParameters Load(string filename)
{
FileStream stream = null;
TerrainQuadTreeParameters paramaters = null;
try
{
stream = File.OpenRead(filename);
XmlSerializer serializer = new XmlSerializer(typeof(TerrainQuadTreeParameters));
paramaters = (TerrainQuadTreeParameters)serializer.Deserialize(stream);
}
finally
{
if (stream != null)
{
stream.Close();
}
}
return(paramaters);
}
/// <summary>
/// This initializes a new instance of TerrainQuadTree. It automatically loads all graphics resources,
/// so it must be called at an appropriate time.
/// </summary>
public TerrainQuadTree(Game game, ContentManager content, TerrainQuadTreeParameters parameters)
{
this.game = game;
this.parameters = parameters;
heightMap = content.Load <Texture2D>(parameters.HeightMapName);
layerMap0 = content.Load <Texture2D>(parameters.LayerMap0Name);
layerMap1 = content.Load <Texture2D>(parameters.LayerMap1Name);
layerMap2 = content.Load <Texture2D>(parameters.LayerMap2Name);
grassTexture = content.Load <Texture2D>(parameters.GrassTextureName);
terrainEffect = content.Load <Effect>("Content\\Shaders\\Terrain");
grassEffect = content.Load <Effect>("Content\\Shaders\\Grass");
this.heightMapResolution = heightMap.Width;
grid = new Grid(game, 1.0f / 16.0f, 16);
ComputeNormalMap();
// Due to a bug with XNA 2.0, it keeps the height map data locked after creating the normal map.
// The only solution I found was to set the graphics device's reference to the texture to null.
game.GraphicsDevice.Textures[0] = null;
// About 99% of the preprocessing time is spent simply doing the detailed computations necessary
// to determine the geometric errors of the chunks. Therefore, instead of serializing the entire
// quadtree to speed up initialization, just these values are saved.
if (!parameters.DoPreprocessing)
{
// Load the geometric errors from the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Open);
BinaryFormatter formatter = new BinaryFormatter();
chunkGeometricErrors = (Dictionary <int, float>)formatter.Deserialize(stream);
stream.Close();
}
else
{
chunkGeometricErrors = new Dictionary <int, float>();
}
currentChunkIndex = 0;
ConstructQuadTree();
if (parameters.DoPreprocessing)
{
// Save the geometric errors to the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, chunkGeometricErrors);
stream.Close();
}
grassChunk = new GrassChunk(game, this, parameters.GrassChunkDimension, parameters.GrassChunkStarSeparation);
GenerateGrassChunkPositions();
}
/// <summary>
/// This initializes a new instance of TerrainQuadTree. It automatically loads all graphics resources,
/// so it must be called at an appropriate time.
/// </summary>
public TerrainQuadTree(Game game, ContentManager content, TerrainQuadTreeParameters parameters)
{
this.game = game;
this.parameters = parameters;
heightMap = content.Load<Texture2D>(parameters.HeightMapName);
layerMap0 = content.Load<Texture2D>(parameters.LayerMap0Name);
layerMap1 = content.Load<Texture2D>(parameters.LayerMap1Name);
layerMap2 = content.Load<Texture2D>(parameters.LayerMap2Name);
grassTexture = content.Load<Texture2D>(parameters.GrassTextureName);
terrainEffect = content.Load<Effect>("Content\\Shaders\\Terrain");
grassEffect = content.Load<Effect>("Content\\Shaders\\Grass");
this.heightMapResolution = heightMap.Width;
grid = new Grid(game, 1.0f / 16.0f, 16);
ComputeNormalMap();
// Due to a bug with XNA 2.0, it keeps the height map data locked after creating the normal map.
// The only solution I found was to set the graphics device's reference to the texture to null.
game.GraphicsDevice.Textures[0] = null;
// About 99% of the preprocessing time is spent simply doing the detailed computations necessary
// to determine the geometric errors of the chunks. Therefore, instead of serializing the entire
// quadtree to speed up initialization, just these values are saved.
if (!parameters.DoPreprocessing)
{
// Load the geometric errors from the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Open);
BinaryFormatter formatter = new BinaryFormatter();
chunkGeometricErrors = (Dictionary<int, float>)formatter.Deserialize(stream);
stream.Close();
}
else
{
chunkGeometricErrors = new Dictionary<int, float>();
}
currentChunkIndex = 0;
ConstructQuadTree();
if (parameters.DoPreprocessing)
{
// Save the geometric errors to the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, chunkGeometricErrors);
stream.Close();
}
grassChunk = new GrassChunk(game, this, parameters.GrassChunkDimension, parameters.GrassChunkStarSeparation);
GenerateGrassChunkPositions();
}
