Esempio n. 1
0
 public static VoxelHandle GetNeighbor(VoxelHandle Of, GlobalVoxelOffset Offset)
 {
     if (!Of.IsValid)
     {
         return(VoxelHandle.InvalidHandle);
     }
     return(new VoxelHandle(Of.Chunk.Manager.ChunkData, Of.Coordinate + Offset));
 }
Esempio n. 2
0
        private static void BuildVoxelTopFaceGeometry(
            RawPrimitive Into,
            VoxelChunk Chunk,
            Cache Cache,
            BoxPrimitive Primitive,
            VoxelHandle V,
            BoxPrimitive.BoxTextureCoords UVs,
            int i)
        {
            var face  = (BoxFace)i;
            var delta = FaceDeltas[i];

            var faceVoxel = new VoxelHandle(Chunk.Manager, V.Coordinate + GlobalVoxelOffset.FromVector3(delta));

            if (!IsFaceVisible(V, faceVoxel, face))
            {
                return;
            }

            var faceDescriptor = Primitive.GetFace(face);
            int exploredVerts  = 0;
            var vertexColors   = new VertexColorInfo[4];
            var vertexTint     = new Color[4];

            // Find all verticies to use for geometry later, and for the fringe
            var vertexPositions = new Vector3[4];

            for (int faceVertex = 0; faceVertex < faceDescriptor.VertexCount; faceVertex++)
            {
                var vertex      = Primitive.Vertices[faceDescriptor.VertexOffset + faceVertex];
                var voxelVertex = Primitive.Deltas[faceDescriptor.VertexOffset + faceVertex];

                var rampOffset = Vector3.Zero;
                if (V.IsExplored && V.Type.CanRamp && ShouldRamp(voxelVertex, V.RampType))
                {
                    rampOffset = new Vector3(0, -V.Type.RampSize, 0);
                }

                var worldPosition = V.WorldPosition + vertex.Position + rampOffset;
                //worldPosition += VertexNoise.GetNoiseVectorFromRepeatingTexture(worldPosition);

                vertexPositions[faceVertex] = worldPosition;
            }

            if (V.IsExplored)
            {
                exploredVerts = 4;
            }
            else
            {
                for (int faceVertex = 0; faceVertex < faceDescriptor.VertexCount; ++faceVertex)
                {
                    var  voxelVertex         = Primitive.Deltas[faceDescriptor.VertexOffset + faceVertex];
                    var  cacheKey            = GetCacheKey(V, voxelVertex);
                    bool anyNeighborExplored = true;

                    if (!Cache.ExploredCache.TryGetValue(cacheKey, out anyNeighborExplored))
                    {
                        anyNeighborExplored = VoxelHelpers.EnumerateVertexNeighbors2D(V.Coordinate, voxelVertex)
                                              .Select(c => new VoxelHandle(V.Chunk.Manager, c))
                                              .Any(n => n.IsValid && n.IsExplored);
                        Cache.ExploredCache.Add(cacheKey, anyNeighborExplored);
                    }


                    if (anyNeighborExplored)
                    {
                        exploredVerts += 1;
                    }
                }
            }

            for (int faceVertex = 0; faceVertex < faceDescriptor.VertexCount; ++faceVertex)
            {
                var voxelVertex = Primitive.Deltas[faceDescriptor.VertexOffset + faceVertex];
                var cacheKey    = GetCacheKey(V, voxelVertex);

                VertexColorInfo vertexColor;
                if (!Cache.LightCache.TryGetValue(cacheKey, out vertexColor))
                {
                    vertexColor = CalculateVertexLight(V, voxelVertex, Chunk.Manager);
                    Cache.LightCache.Add(cacheKey, vertexColor);
                }

                vertexColors[faceVertex] = vertexColor;

                vertexTint[faceVertex] = new Color(1.0f, 1.0f, 1.0f, 1.0f);
                if (exploredVerts != 4)
                {
                    bool anyNeighborExplored = true;
                    if (!Cache.ExploredCache.TryGetValue(cacheKey, out anyNeighborExplored))
                    {
                        throw new InvalidProgramException("Failed cache lookup");
                    }

                    if (!anyNeighborExplored)
                    {
                        vertexTint[faceVertex] = new Color(0.0f, 0.0f, 0.0f, 1.0f);
                    }
                }

                vertexTint[faceVertex] = new Color(vertexTint[faceVertex].ToVector4() * V.Type.Tint.ToVector4());
            }

            if (exploredVerts != 0)
            {
                var baseUVs = UVs.Uvs[11]; // EW

                var baseUVBounds = new Vector4(baseUVs.X + 0.001f, baseUVs.Y + 0.001f, baseUVs.X + (1.0f / 16.0f) - 0.001f, baseUVs.Y + (1.0f / 16.0f) - 0.001f);

                // Draw central top tile.
                AddTopFaceGeometry(Into,
                                   Cache.AmbientValues, Primitive,
                                   faceDescriptor,
                                   vertexPositions,
                                   vertexColors,
                                   vertexTint,
                                   Vector2.One,
                                   baseUVs, baseUVBounds);

                if (V.GrassType != 0)
                {
                    BuildGrassFringeGeometry(Into, Chunk, Cache, Primitive, V, vertexColors,
                                             vertexTint, vertexPositions, faceDescriptor, exploredVerts);
                }
            }
            else
            {
                if (!Debugger.Switches.HideSliceTop)
                {
                    var indexOffset = Into.VertexCount;

                    for (int faceVertex = 0; faceVertex < faceDescriptor.VertexCount; faceVertex++)
                    {
                        Into.AddVertex(new ExtendedVertex(
                                           vertexPositions[faceVertex] + VertexNoise.GetNoiseVectorFromRepeatingTexture(vertexPositions[faceVertex]),
                                           new Color(0, 0, 0, 255),
                                           new Color(0, 0, 0, 255),
                                           new Vector2(12.5f / 16.0f, 0.5f / 16.0f),
                                           new Vector4(12.0f / 16.0f, 0.0f, 13.0f / 16.0f, 1.0f / 16.0f)));
                    }

                    for (int idx = faceDescriptor.IndexOffset; idx < faceDescriptor.IndexCount +
                         faceDescriptor.IndexOffset; idx++)
                    {
                        ushort offset  = Primitive.Indexes[idx];
                        ushort offset0 = Primitive.Indexes[faceDescriptor.IndexOffset];
                        Into.AddIndex((short)(indexOffset + offset - offset0));
                    }
                }
            }
        }
Esempio n. 3
0
        private static void BuildVoxelFaceGeometry(
            RawPrimitive Into,
            VoxelChunk Chunk,
            Cache Cache,
            BoxPrimitive Primitive,
            VoxelHandle V,
            Color Tint,
            BoxPrimitive.BoxTextureCoords UVs,
            Matrix VertexTransform,
            int i,
            bool ApplyLighting)
        {
            var face  = (BoxFace)i;
            var delta = FaceDeltas[i];

            var faceVoxel = new VoxelHandle(Chunk.Manager, V.Coordinate + GlobalVoxelOffset.FromVector3(delta));

            if (!IsFaceVisible(V, faceVoxel, face))
            {
                return;
            }

            var faceDescriptor = Primitive.GetFace(face);
            var indexOffset    = Into.VertexCount;

            for (int faceVertex = 0; faceVertex < faceDescriptor.VertexCount; faceVertex++)
            {
                var vertex      = Primitive.Vertices[faceDescriptor.VertexOffset + faceVertex];
                var voxelVertex = Primitive.Deltas[faceDescriptor.VertexOffset + faceVertex];
                var vertexColor = new VertexColorInfo
                {
                    SunColor     = 255,
                    AmbientColor = 255,
                    DynamicColor = 255,
                };

                if (ApplyLighting)
                {
                    var cacheKey = GetCacheKey(V, voxelVertex);

                    if (!Cache.LightCache.TryGetValue(cacheKey, out vertexColor))
                    {
                        vertexColor = CalculateVertexLight(V, voxelVertex, Chunk.Manager);
                        Cache.LightCache.Add(cacheKey, vertexColor);
                    }

                    Cache.AmbientValues[faceVertex] = vertexColor.AmbientColor;
                }

                var rampOffset = Vector3.Zero;
                if (V.IsExplored && V.Type.CanRamp && ShouldRamp(voxelVertex, V.RampType))
                {
                    rampOffset = new Vector3(0, -V.Type.RampSize, 0);
                }

                var baseWorldPosition = V.WorldPosition + vertex.Position + rampOffset;
                var noise             = VertexNoise.GetNoiseVectorFromRepeatingTexture(baseWorldPosition);
                var localPosition     = Vector3.Transform(vertex.Position + rampOffset + noise, VertexTransform);

                Into.AddVertex(new ExtendedVertex(
                                   V.WorldPosition + localPosition,
                                   vertexColor.AsColor(),
                                   Tint,
                                   UVs.Uvs[faceDescriptor.VertexOffset + faceVertex],
                                   UVs.Bounds[faceDescriptor.IndexOffset / 6]));
            }

            bool flippedQuad = ApplyLighting && (Cache.AmbientValues[0] + Cache.AmbientValues[2] >
                                                 Cache.AmbientValues[1] + Cache.AmbientValues[3]);

            for (int idx = faceDescriptor.IndexOffset; idx < faceDescriptor.IndexCount +
                 faceDescriptor.IndexOffset; idx++)
            {
                ushort offset  = flippedQuad ? Primitive.FlippedIndexes[idx] : Primitive.Indexes[idx];
                ushort offset0 = flippedQuad ? Primitive.FlippedIndexes[faceDescriptor.IndexOffset] : Primitive.Indexes[faceDescriptor.IndexOffset];
                Into.AddIndex((short)(indexOffset + offset - offset0));
            }
        }
Esempio n. 4
0
 private static int SuccessorToEuclidianLookupKey(GlobalVoxelOffset C)
 {
     return((C.X + 1) + (C.Y + 1) * 3 + (C.Z + 1) * 9);
 }