/// <summary>
/// Sets the decoration for a specific cell
/// </summary>
/// <param name="cell">The cell to set for</param>
/// <param name="cellMappedData">The cell's mapped data</param>
/// <param name="mesh">The decoration mesh</param>
private void SetCellDecoration(Cell cell, CellMappedData cellMappedData, string decoration)
{
if (cellMappedData.Decoration.Key == decoration)
{
return;
}
// Free old decoration
if (cellMappedData.Decoration.Key != null)
{
this.decorations[cellMappedData.Decoration.Key].FreeIndex(cellMappedData.Decoration.Value);
}
// Set new decoration
if (decoration != null && decoration.Length > 0)
{
var index = this.decorations[decoration].GetFreeIndex();
cellMappedData.Decoration = new KeyValuePair <string, int>(decoration, index);
this.decorations[decoration].SetPosition(index, new Vector3(TopographyHelper.HexToWorld(cell.Coordinates), (float)cell.Elevation));
}
else
{
cellMappedData.Decoration = new KeyValuePair <string, int>(null, 0);
}
}
/// <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
});
}
