void Shake::updateProgress()
{
Animator::updateProgress();
if (NodePtr targetNode = node.lock())
{
float x = length * progress * timeScale;
uint64_t x1 = static_cast<uint32_t>(x);
uint64_t x2 = x1 + 1;
float t = x - static_cast<float>(x1);
Vector2 previousPosition;
Vector2 nextPosition;
if (x1 != 0)
{
previousPosition.x = (2.0f * (static_cast<float>(fnvHash(seedX | (x1 << 32))) / std::numeric_limits<uint64_t>::max()) - 1.0f) * distance.x;
previousPosition.y = (2.0f * (static_cast<float>(fnvHash(seedY | (x1 << 32))) / std::numeric_limits<uint64_t>::max()) - 1.0f) * distance.y;
}
if (x2 != static_cast<uint32_t>(timeScale))
{
nextPosition.x = (2.0f * (static_cast<float>(fnvHash(seedX | (x2 << 32))) / std::numeric_limits<uint64_t>::max()) - 1.0f) * distance.x;
nextPosition.y = (2.0f * (static_cast<float>(fnvHash(seedY | (x2 << 32))) / std::numeric_limits<uint64_t>::max()) - 1.0f) * distance.y;
}
Vector2 noise(smoothstep(previousPosition.x, nextPosition.x, t),
smoothstep(previousPosition.y, nextPosition.y, t));
targetNode->setPosition(startPosition + noise);
}
}
FnvHash(Wrapper wrapper) : hash_value(fnvHash(wrapper.str)) { }
Music::Music(const TChar* name, OSInternalSound* mus)
: musicName(name), musicID(fnvHash(name))
{
hardwareStream = mus;
static_cast<XAudio2Stream*>(hardwareStream)->SetMusicRef(this);
}
