bool CTileset::ReadTileTypeFile(char * szFile)
{
	//Detect if the tiletype file already exists, if not create it
    if (File_Exists(szFile)) {
		BinaryFile tsf(szFile, "rb");
        if (!tsf.is_open()) {
			printf("ERROR: couldn't open tileset file: %s\n", szFile);
			return false;
		}

		iTileTypeSize = tsf.read_i32();

        if (iTileTypeSize <= 0 || iTileTypeSize > 1024) {
			return false;
		}

		tiletypes = new TileType[iTileTypeSize];

        for (short i = 0; i < iTileTypeSize; i++) {
			tiletypes[i] = (TileType)tsf.read_i32();
		}
    } else {
		iTileTypeSize = iWidth * iHeight;
		tiletypes = new TileType[iTileTypeSize];

        for (short i = 0; i < iTileTypeSize; i++) {
			tiletypes[i] = tile_nonsolid;
		}
	}

	return true;
}
void CTileset::SaveTileset()
{
	BinaryFile tsf(szTilesetPath, "wb");
    if (!tsf.is_open()) {
		printf("ERROR: couldn't open tileset file to save tile types: %s\n", szTilesetPath);
		return;
	}

	tsf.write_i32(iTileTypeSize);

    for (short i = 0; i < iTileTypeSize; i++) {
		tsf.write_i32(tiletypes[i]);
	}

#if defined(__MACOSX__)
	chmod(szTilesetPath, S_IRWXU | S_IRWXG | S_IROTH);
#endif
}
tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
snGradScheme<Type>::snGrad
(
    const GeometricField<Type, fvPatchField, volMesh>& vf,
    const tmp<surfaceScalarField>& tdeltaCoeffs,
    const word& snGradName
)
{
    const fvMesh& mesh = vf.mesh();

    // construct GeometricField<Type, fvsPatchField, surfaceMesh>
    tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> tsf
    (
        new GeometricField<Type, fvsPatchField, surfaceMesh>
        (
            IOobject
            (
                snGradName + "("+vf.name()+')',
                vf.instance(),
                vf.mesh(),
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh,
            vf.dimensions()*tdeltaCoeffs().dimensions()
        )
    );
    GeometricField<Type, fvsPatchField, surfaceMesh>& ssf = tsf.ref();

    // set reference to difference factors array
    const scalarField& deltaCoeffs = tdeltaCoeffs().internalField();

    // owner/neighbour addressing
    const labelUList& owner = mesh.owner();
    const labelUList& neighbour = mesh.neighbour();

    forAll(owner, facei)
    {
        ssf[facei] =
            deltaCoeffs[facei]*(vf[neighbour[facei]] - vf[owner[facei]]);
    }