/// <summary>
/// Generates terrain meshes, cell and biome data from a scene. Can be put in a task.
/// </summary>
/// <param name="scene">The scene to generate from</param>
/// <returns>Results</returns>
private MeshGenerationResult GenerateMeshesFromScene(Scene scene)
{
// Results
var renderableMeshes = new List <RenderableMesh>();
var rawMeshes = new List <Mesh>();
var cellData = new Dictionary <Cell, CellMappedData>();
// Stopwatch used for performance logging
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
// Create world meshes
var hexCombiner = new MeshCombiner();
int range = scene.WorldMap.Radius;
for (int p = -range; p <= range; p++)
{
for (int q = -range; q <= range; q++)
{
var cell = scene.WorldMap.GetCell(p, q);
// Due to the hexagonal shape we might be out of bounds
if (cell == null)
{
continue;
}
var worldPoint = TopographyHelper.HexToWorld(new Point(p, q));
var position = new Vector3(worldPoint, (float)cell.Elevation);
var color = GetCellColor(cell);
Mesh mesh = biomeMappedData[cell.Biome.Name].HexMesh;
// Ensure sea is actually level
if (cell.IsWater && cell.Elevation < scene.Settings.SeaLevel)
{
position.Z = scene.Settings.SeaLevel;
}
// Add it to the combiner, using the cell's location as a tag so we can later
// get the vertexes of this hex inside the larger mesh
int meshIndex = hexCombiner.Add(new MeshInstance
{
mesh = mesh,
matrix = Matrix.CreateTranslation(position),
tag = new Point(p, q),
color = color,
useColor = true,
});
// Register partial cell mapped data to be used later
var cellMappedData = new CellMappedData
{
MeshIndex = meshIndex
};
cellData[cell] = cellMappedData;
}
}
// Combine meshes
var meshList = hexCombiner.GetCombinedMeshes();
for (int i = 0; i < meshList.Count; i++)
{
var renderable = new RenderableMesh(orbis.GraphicsDevice, meshList[i]);
renderableMeshes.Add(renderable);
}
// Finish cell mapped data
foreach (var cell in cellData)
{
var mesh = meshList[cell.Value.MeshIndex];
cell.Value.VertexIndexes = mesh.TagIndexMap[cell.Key.Coordinates];
}
stopwatch.Stop();
Debug.WriteLine("Generated " + renderableMeshes.Count + " meshes in " + stopwatch.ElapsedMilliseconds + " ms");
return(new MeshGenerationResult {
cellData = cellData,
rawMeshes = rawMeshes,
renderableMeshes = renderableMeshes
});
}
protected override void LoadContent()
{
// Load shader, set up settings
var black = Game.Content.Load <Texture2D>("Textures/black");
basicShader = Game.Content.Load <Effect>("Shaders/BasicColorMapped");
basicShader.CurrentTechnique = basicShader.Techniques["DefaultTechnique"];
basicShader.Parameters["ColorMapTexture"].SetValue(black);
basicShader.Parameters["ColorInfluence"].SetValue(1.0f);
basicShader.Parameters["FogColor"].SetValue(SkyColor.ToVector4());
basicShader.Parameters["FogEndDistance"].SetValue(FogDistance);
// Load models, decoration and biome data
var modelLoader = new AtlasModelLoader(2048, 2048, basicShader, Game.Content);
var decorationData = orbis.Content.Load <XMLModel.DecorationCollection>("Config/Decorations");
var decorationManager = new DecorationManager(decorationData, modelLoader, GraphicsDevice);
// Load decorations
foreach (var data in decorationData.Decorations)
{
decorations.Add(data.Name, new DecorationPool(decorationManager.GetDecorationMesh(data.Name), GraphicsDevice, 1));
}
var biomeData = orbis.Content.Load <XMLModel.BiomeCollection>("Config/Biomes");
biomeMappedData = new Dictionary <string, BiomeMappedData>();
// Load biomes
foreach (var biome in biomeData.Biomes)
{
biomeMappedData.Add(biome.Name, new BiomeMappedData
{
HexMesh = modelLoader.LoadModel(biome.HexModel.Name, biome.HexModel.Texture, biome.HexModel.ColorTexture).Mesh,
DefaultDecoration = biome.DefaultDecoration,
DefaultDensity = biome.DecorationDensity,
});
}
// Load tile highlight mesh
var model = modelLoader.LoadModel("flag", "flag");
tileHighlightMesh = new RenderableMesh(GraphicsDevice, model.Mesh);
modelLoader.FinializeLoading(GraphicsDevice);
// Set up shader textures
basicShader.Parameters["MainTexture"].SetValue(modelLoader.Material.Texture);
basicShader.Parameters["ColorMapTexture"].SetValue(modelLoader.Material.ColorMap);
if (atlasDebugEnabled)
{
// Atlas texture debugging
Mesh mesh = null;
using (var stream = TitleContainer.OpenStream("Content/Meshes/quad_up.obj"))
{
mesh = ObjParser.FromStream(stream);
}
atlasDebugInstance = new RenderInstance
{
mesh = new RenderableMesh(GraphicsDevice, mesh),
matrix = Matrix.CreateScale(10) * Matrix.CreateTranslation(0, 0, 30),
};
basicShader.Parameters["ColorMapTexture"].SetValue(black);
}
base.LoadContent();
}