/// <summary>
/// Rebuilds the mesh at the given chunk coordinates.
/// </summary>
/// <param name="renderer">The renderer that is rebuilding the mesh.</param>
/// <param name="chunkX">The chunk X coordinate.</param>
/// <param name="chunkY">The chunk Y coordinate.</param>
public void Rebuild(TileMeshRenderer renderer, int chunkX, int chunkY)
{
var chunk = renderChunks[chunkX, chunkY];
bool decor = decorMaterial != null;
if (chunk.dirty || renderer.forceRebuild)
{
int w = Grid.WidthInCells, maxY = CHUNK_SIZE * (chunkY + 1), minX =
CHUNK_SIZE * chunkX, maxX = CHUNK_SIZE + minX;
// Create vertex arrays
chunk.Clear();
for (int y = chunkY * CHUNK_SIZE; y < maxY; y++)
{
for (int x = minX; x < maxX; x++)
{
int cell = y * w + x;
if (occupiedCells.ContainsKey(cell))
{
var color = renderer.GetCellColor(cell, element);
GenerateVertices(x, y, color);
}
}
}
if (MeshUtil.vertices.Count > 0)
{
chunk.CreateMesh();
chunk.BuildMesh();
chunk.SetActive(true);
// Deal with the decor
if (decor)
{
RebuildDecor(renderer, chunkX, chunkY);
}
}
else
{
chunk.DestroyMesh();
if (decor)
{
decorChunks[chunkX, chunkY].DestroyMesh();
}
}
chunk.dirty = false;
}
else
{
// It still needs to be drawn if it exists
chunk.SetActive(true);
if (decor)
{
decorChunks[chunkX, chunkY].SetActive(true);
}
}
}
/// <summary>
/// Rebuilds the decor mesh at the given coordinates.
/// </summary>
/// <param name="renderer">The renderer that is rebuilding the mesh.</param>
/// <param name="chunkX">The chunk X coordinate.</param>
/// <param name="chunkY">The chunk Y coordinate.</param>
private void RebuildDecor(TileMeshRenderer renderer, int chunkX, int chunkY)
{
int w = Grid.WidthInCells, maxY = CHUNK_SIZE * (chunkY + 1), minX =
CHUNK_SIZE * chunkX, maxX = CHUNK_SIZE + minX;
var chunk = decorChunks[chunkX, chunkY];
// Create vertex arrays
chunk.Clear();
decorTriangles.Clear();
for (int y = chunkY * CHUNK_SIZE; y < maxY; y++)
{
for (int x = minX; x < maxX; x++)
{
int cell = y * w + x;
if (occupiedCells.ContainsKey(cell))
{
var color = renderer.GetCellColor(cell, element);
GenerateDecorVertices(x, y, color);
}
}
}
if (MeshUtil.vertices.Count > 0)
{
var indices = MeshUtil.indices;
int d = decorTriangles.Count;
chunk.CreateMesh();
// Triangles must be in sorted order
decorTriangles.Sort(TriangleComparer.Instance);
for (int i = 0; i < d; i++)
{
var triangle = decorTriangles[i];
indices.Add(triangle.i0);
indices.Add(triangle.i1);
indices.Add(triangle.i2);
}
chunk.BuildMesh();
chunk.SetActive(true);
}
else
{
chunk.DestroyMesh();
}
}