private static int GetVoxelVertexExploredNeighbors(VoxelHandle V, Geo.TemplateFace Face, SliceCache Cache)
{
var exploredVerts = 0;
if (V.IsExplored)
{
exploredVerts = 4;
}
else
{
for (int faceVertex = 0; faceVertex < Face.Mesh.VertexCount; ++faceVertex)
{
var cacheKey = SliceCache.GetCacheKey(V, Face.Mesh.Verticies[faceVertex].LogicalVertex);
var anyNeighborExplored = true;
if (!Cache.ExploredCache.TryGetValue(cacheKey, out anyNeighborExplored))
{
anyNeighborExplored = VoxelHelpers.EnumerateVertexNeighbors2D(V.Coordinate, Face.Mesh.Verticies[faceVertex].LogicalVertex)
.Select(c => new VoxelHandle(V.Chunk.Manager, c))
.Any(n => n.IsValid && n.IsExplored);
Cache.ExploredCache.Add(cacheKey, anyNeighborExplored);
}
if (anyNeighborExplored)
{
exploredVerts += 1;
}
}
}
return(exploredVerts);
}
private static void PrecomputeVoxelSlopes(ChunkManager Chunks, VoxelHandle V)
{
if (!V.IsValid)
{
return;
}
if (V.IsEmpty || !V.IsVisible || V.Type == null || !V.Type.CanRamp)
{
V.RampType = RampType.None;
return;
}
var vAbove = VoxelHelpers.GetVoxelAbove(V);
if (vAbove.IsValid && !vAbove.IsEmpty)
{
V.RampType = RampType.None;
return;
}
var compositeRamp = RampType.None;
foreach (var vertex in TopVerticies)
{
// If there are no empty neighbors, no slope.
// - Check manhattan neighbors - both full?
// then check if they can slope - if yes, and diagonal is empty, slope
// if not, then no slope
// if diagonal full - obviously no slope.
if (!VoxelHelpers.EnumerateVertexNeighbors2D(V.Coordinate, vertex) // Todo: Account for case where only open voxel is diagonal between two full ones
.Any(n =>
{
var handle = Chunks.CreateVoxelHandle(n);
if (handle.IsValid)
{
return(handle.IsEmpty);
}
return(false);
}))
{
continue;
}
switch (vertex)
{
case VoxelVertex.FrontTopLeft:
compositeRamp |= RampType.TopFrontLeft;
break;
case VoxelVertex.FrontTopRight:
compositeRamp |= RampType.TopFrontRight;
break;
case VoxelVertex.BackTopLeft:
compositeRamp |= RampType.TopBackLeft;
break;
case VoxelVertex.BackTopRight:
compositeRamp |= RampType.TopBackRight;
break;
}
}
V.RampType = compositeRamp;
}