Method SeedRef

engine/Random/randomGen.cpp:87–108

}

int RandomTable::SeedRef(int x, int z) const
{
    // slow reference implementation
    // make x, z out of order
    enum
    {
        mask = Size - 1
    };
    // bitwise interleave x and z
    int xz = 0;
    // only 12 bits is significant
    x = _table[x & mask];
    z = _table[z & mask];

    for (int i = 0; i < 6; i++)
    {
        xz <<= 1, xz |= x & 1, x >>= 1;
        xz <<= 1, xz |= z & 1, z >>= 1;
    }

    return xz;
}

const int A = 48271;
const int M = 0x7fffffff;