void CreateCube(IntVector3 p, Direction visibleFaces,
ref FaceTexture baseTexture, ref FaceTexture topTexture, VertexList <TerrainVertex> vertexList,
Direction sliceFaces)
{
var offset = p - this.ChunkOffset;
int sides = (int)visibleFaces;
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
{
continue;
}
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0, v1, v2, v3;
v0 = vertices[0] + offset;
v1 = vertices[1] + offset;
v2 = vertices[2] + offset;
v3 = vertices[3] + offset;
Direction dir = (Direction)(1 << side);
bool isSliceFace = (sliceFaces & dir) != 0;
int occ0, occ1, occ2, occ3;
if (isSliceFace)
{
occ0 = occ1 = occ2 = occ3 = 0;
}
else
{
GetOcclusionsForFace(p, (DirectionOrdinal)side,
out occ0, out occ1, out occ2, out occ3);
}
var tex = side == (int)DirectionOrdinal.PositiveZ ? topTexture : baseTexture;
byte sliceHack = isSliceFace ? (byte)1 : (byte)0;
var vd = new TerrainVertex(v0, v1, v2, v3, occ0, occ1, occ2, occ3,
tex, sliceHack);
vertexList.Add(vd);
}
}
void CreateUndefinedChunk(ref IntGrid3 viewGrid, ref IntGrid3 chunkGrid, VertexList<TerrainVertex> vertexList,
Direction visibleChunkFaces)
{
// Faces that are visible due to viewgrid
Direction sliceFaces = GetGridSliceDirections(ref chunkGrid, ref viewGrid) & visibleChunkFaces;
// Only faces revealed by viewgrid are visible
Direction visibleFaces = sliceFaces;
if (visibleFaces == 0)
return;
int sides = (int)visibleFaces;
FaceTexture tex = Chunk.UndefinedFaceTexture;
const int occlusion = 0;
var offset = chunkGrid.Corner1 - this.ChunkOffset;
var size = new IntVector3(chunkGrid.Size.Width, chunkGrid.Size.Height, chunkGrid.Size.Depth);
// All faces are revealed by viewgrid
byte sliceHack = (byte)1;
if (Chunk.UseBigUnknownChunk)
{
/* Note: Using chunk sized quads causes t-junction problems */
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
continue;
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0 = vertices[0] * size + offset;
IntVector3 v1 = vertices[1] * size + offset;
IntVector3 v2 = vertices[2] * size + offset;
IntVector3 v3 = vertices[3] * size + offset;
var vd = new TerrainVertex(v0, v1, v2, v3, occlusion, occlusion, occlusion, occlusion, tex, sliceHack);
vertexList.Add(vd);
}
}
else
{
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
continue;
int d0 = side / 2;
int d1 = (d0 + 1) % 3;
int d2 = (d0 + 2) % 3;
bool posFace = (side & 1) == 1;
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0 = vertices[0] + offset;
IntVector3 v1 = vertices[1] + offset;
IntVector3 v2 = vertices[2] + offset;
IntVector3 v3 = vertices[3] + offset;
var vec1 = new IntVector3();
vec1[d1] = 1;
var vec2 = new IntVector3();
vec2[d2] = 1;
for (int v = 0; v < size[d1]; ++v)
for (int u = 0; u < size[d2]; ++u)
{
var off = vec1 * v + vec2 * u;
if (posFace)
off[d0] = size[d0] - 1;
var vd = new TerrainVertex(v0 + off, v1 + off, v2 + off, v3 + off,
occlusion, occlusion, occlusion, occlusion, tex, sliceHack);
vertexList.Add(vd);
}
}
}
}
void CreateCube(IntVector3 p, Direction visibleFaces,
ref FaceTexture baseTexture, ref FaceTexture topTexture, VertexList<TerrainVertex> vertexList,
Direction sliceFaces)
{
var offset = p - this.ChunkOffset;
int sides = (int)visibleFaces;
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
continue;
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0, v1, v2, v3;
v0 = vertices[0] + offset;
v1 = vertices[1] + offset;
v2 = vertices[2] + offset;
v3 = vertices[3] + offset;
Direction dir = (Direction)(1 << side);
bool isSliceFace = (sliceFaces & dir) != 0;
int occ0, occ1, occ2, occ3;
if (isSliceFace)
{
occ0 = occ1 = occ2 = occ3 = 0;
}
else
{
GetOcclusionsForFace(p, (DirectionOrdinal)side,
out occ0, out occ1, out occ2, out occ3);
}
var tex = side == (int)DirectionOrdinal.PositiveZ ? topTexture : baseTexture;
byte sliceHack = isSliceFace ? (byte)1 : (byte)0;
var vd = new TerrainVertex(v0, v1, v2, v3, occ0, occ1, occ2, occ3,
tex, sliceHack);
vertexList.Add(vd);
}
}
void CreateUndefinedChunk(ref IntGrid3 viewGrid, ref IntGrid3 chunkGrid, VertexList <TerrainVertex> vertexList,
Direction visibleChunkFaces)
{
// Faces that are visible due to viewgrid
Direction sliceFaces = GetGridSliceDirections(ref chunkGrid, ref viewGrid) & visibleChunkFaces;
// Only faces revealed by viewgrid are visible
Direction visibleFaces = sliceFaces;
if (visibleFaces == 0)
{
return;
}
int sides = (int)visibleFaces;
FaceTexture tex = Chunk.UndefinedFaceTexture;
const int occlusion = 0;
var offset = chunkGrid.Corner1 - this.ChunkOffset;
var size = new IntVector3(chunkGrid.Size.Width, chunkGrid.Size.Height, chunkGrid.Size.Depth);
// All faces are revealed by viewgrid
byte sliceHack = (byte)1;
if (Chunk.UseBigUnknownChunk)
{
/* Note: Using chunk sized quads causes t-junction problems */
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
{
continue;
}
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0 = vertices[0] * size + offset;
IntVector3 v1 = vertices[1] * size + offset;
IntVector3 v2 = vertices[2] * size + offset;
IntVector3 v3 = vertices[3] * size + offset;
var vd = new TerrainVertex(v0, v1, v2, v3, occlusion, occlusion, occlusion, occlusion, tex, sliceHack);
vertexList.Add(vd);
}
}
else
{
for (int side = 0; side < 6 && sides != 0; ++side, sides >>= 1)
{
if ((sides & 1) == 0)
{
continue;
}
int d0 = side / 2;
int d1 = (d0 + 1) % 3;
int d2 = (d0 + 2) % 3;
bool posFace = (side & 1) == 1;
var vertices = s_cubeFaceInfo[side].Vertices;
IntVector3 v0 = vertices[0] + offset;
IntVector3 v1 = vertices[1] + offset;
IntVector3 v2 = vertices[2] + offset;
IntVector3 v3 = vertices[3] + offset;
var vec1 = new IntVector3();
vec1[d1] = 1;
var vec2 = new IntVector3();
vec2[d2] = 1;
for (int v = 0; v < size[d1]; ++v)
{
for (int u = 0; u < size[d2]; ++u)
{
var off = vec1 * v + vec2 * u;
if (posFace)
{
off[d0] = size[d0] - 1;
}
var vd = new TerrainVertex(v0 + off, v1 + off, v2 + off, v3 + off,
occlusion, occlusion, occlusion, occlusion, tex, sliceHack);
vertexList.Add(vd);
}
}
}
}
}
