private static void ProcessSide(Chunk chunk, Chunk neighborChunk, FaceBuildingContext context)
{
foreach (var flatIndex in context.PendingVoxels)
{
var index = chunk.FromFlatIndex(flatIndex);
var voxel = chunk.Voxels[flatIndex];
var neighbor = neighborChunk.CurrentHeight <= index.Y
? Voxel.SunBlock
: neighborChunk.GetVoxel(context.GetNeighborIndex(index, neighborChunk.CurrentHeight));
var voxelDefinition = voxel.GetDefinition();
if (voxelDefinition.IsBlock)
{
var neighborDefinition = neighbor.GetDefinition();
if ((neighborDefinition.CoverFlags & context.OppositeDirection) == 0)
{
chunk.BuildingContext.VisibilityFlags.TryGetValue(flatIndex, out var visibility);
chunk.BuildingContext.VisibilityFlags[flatIndex] = visibility | context.Direction;
context.VoxelCount++;
}
}
}
}
private void BuildHorizontalFace(bool isInChunk, int neighborFlatIndex, Chunk chunk, VoxelDefinition definition,
int flatIndex, ref VisibilityFlag visibilityFlag, ref byte voxelLight, FaceBuildingContext context)
{
if (isInChunk)
{
var neighbor = chunk.Voxels[neighborFlatIndex];
var neighborDefinition = neighbor.GetDefinition();
if (definition.IsBlock)
{
if ((neighborDefinition.CoverFlags & context.OppositeDirection) == 0 || (definition.CoverFlags & context.Direction) == 0)
{
visibilityFlag |= context.Direction;
context.VoxelCount++;
}
}
else
{
var lightDrop = VoxelDefinition.GetBrightnessLoss(neighborDefinition, definition, context.OppositeFace);
if (voxelLight < neighbor.CompositeLight - lightDrop)
{
voxelLight = (byte)(neighbor.CompositeLight - lightDrop);
}
}
}
else if (definition.IsBlock)
{
context.PendingVoxels.Add(flatIndex);
}
}
