private BlockTexture GetTexture(BlockFaceField faceDir, BlockType type)
{
switch (type)
{
case BlockType.Dirt:
return(BlockTexture.Dirt);
case BlockType.Grass:
{
switch (faceDir)
{
case BlockFaceField.YIncreasing:
return(BlockTexture.GrassTop);
case BlockFaceField.YDecreasing:
return(BlockTexture.Dirt);
default:
return(BlockTexture.GrassSide);
}
}
case BlockType.Stone:
return(BlockTexture.Stone);
default:
throw new ArgumentException("Unsupported Block Type");
}
}
public void RemoveFace(Vector3i position, BlockFaceField facing)
{
if ((visibleFaceBitField[position.X, position.Y, position.Z] & (byte)facing) > 0)
{
visibleFaceBitField[position.X, position.Y, position.Z] ^= (byte)facing;
visibleFaces--;
Altered = true;
}
}
public void AddFace(Vector3i position, BlockFaceField facing)
{
if ((visibleFaceBitField[position.X, position.Y, position.Z] & (byte)facing) == 0)
{
visibleFaceBitField[position.X, position.Y, position.Z] |= (byte)facing;
visibleFaces++;
Altered = true;
}
}
public void ChangeFacing(Vector3i absolutePosition, BlockFaceField facing, bool activate)
{
Optional <Region> currentRegion = GetRegionFromAbsolute(absolutePosition);
Debug.Assert(currentRegion.Valid);
Vector3i relativePosition = Transformation.AbsoluteToRelative(absolutePosition,
currentRegion.Data.RegionOrigin);
if (activate)
{
currentRegion.Data.AddFace(relativePosition, facing);
}
else
{
currentRegion.Data.RemoveFace(relativePosition, facing);
}
}
private void BuildFace(Vector3i bottomBackLeft, BlockFaceField faceDir, BlockType type)
{
if (type == BlockType.Air)
{
return;
}
BlockTexture faceTexture = GetTexture(faceDir, type);
Vector2[] uvMap = UVMap[faceTexture][faceDir];
Vector3i[] offsetMap = faceVertexOffsetMap[faceDir];
Vector3i currentFace;
for (int k = 0; k < 6; k++)
{
if (regionMesh.Length < index + k + 1)
{
break;
}
currentFace = (bottomBackLeft + offsetMap[k]);
if (regionMesh[index + k] == null)
{
regionMesh[index + k] = new VertexPositionTexture(currentFace.ToVector3, uvMap[k]);
}
else
{
regionMesh[index + k].Position = currentFace.ToVector3;
regionMesh[index + k].TextureCoordinate = uvMap[k];
}
}
index += 6;
}
