void GenerateStackMesh(int x, int z, CellStack stack)
{
int stackHeight = stack.Count();
Vector2 worldOffset = new Vector2(x + chunk.offsetOrigin.x, z + chunk.offsetOrigin.y);
Vector3 center = HexCoordinates.FromOffsetCoordinates(x, z).ToChunkPosition();
center += new Vector3(0, transform.localPosition.y, 0);
center += stackHeight * HexMetrics.heightVector;
CellType topCell = stack.Peek();
Material topMaterial = getTopMaterial(topCell);
List <int> topMaterialSubmesh = getSubmesh(topMaterial);
//Generates the horizontal part of the terrain (top of the stack)
for (int i = 0; i < 6; i++)
{
AddTriangleToMesh(
center,
center + HexMetrics.corners[i],
center + HexMetrics.corners[i + 1]
);
AddTriangleToSubmesh(
topMaterialSubmesh,
center,
center + HexMetrics.corners[i],
center + HexMetrics.corners[i + 1]
);
}
HexCoordinates[] neighbors = stack.coordinates.GetNeighbors();
Vector3 topCenter = center;
//Generates the vertical part of the terrain (sides of the stack)
for (int i = 0; i < 6; i++)
{
center = topCenter;
//If we have a neighbor in this direction, check its height
//If it is taller than us, ignore it (it will create the vertical wall)
//If it is the same height as us, ignore it (we don't need a vertical wall)
//If it is shorter than us, create a vertical wall down to its height
CellStack neighbor = chunk.GetCellStackFromWorldCoords(neighbors[i]);
int neighborHeight = 0;
if (neighbor != null)
{
neighborHeight = neighbor.Count();
}
for (int elevation = stackHeight; elevation > neighborHeight; elevation--)
{
CellType currentCell = stack.PeekAt(elevation - 1);
Material sideMaterial = getSideMaterial(currentCell);
List <int> sideMaterialSubmesh = getSubmesh(sideMaterial);
AddTriangleToMesh(
center + HexMetrics.corners[i] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1],
center + HexMetrics.corners[i]
);
AddTriangleToSubmesh(
sideMaterialSubmesh,
center + HexMetrics.corners[i] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1],
center + HexMetrics.corners[i]
);
AddTriangleToMesh(
center + HexMetrics.corners[i] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1]
);
AddTriangleToSubmesh(
sideMaterialSubmesh,
center + HexMetrics.corners[i] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1] - HexMetrics.heightVector,
center + HexMetrics.corners[i + 1]
);
center -= HexMetrics.heightVector;
}
}
}