Function EncodeFloat16

engine/Poseidon/Network/NetworkMsg.cpp:576–589

const int MaxAbsInt16 = 0x4000;
// we want to have 0.5 represented exactly
// we also want to keep some reserve range in case small overflow will occur

inline int EncodeFloat16(float x)
{
    constexpr float networkOrientationTolerance = 1e-3f;
    if (x < -1.0f || x > 1.0f)
    {
        NET_ERROR(std::isfinite(x));
        NET_ERROR(x >= -1.0f - networkOrientationTolerance);
        NET_ERROR(x <= +1.0f + networkOrientationTolerance);
        saturate(x, -1.0f, +1.0f);
    }
    int r = toInt(MaxAbsInt16 * x);
    saturate(r, -MaxAbsInt16, +MaxAbsInt16);
    return r;
}