private function writeBeatEffects(Beat $beat, NoteEffect $noteEffect)
{
$flags1 = 0;
$flags2 = 0;
if ($noteEffect->isFadeIn()) {
$flags1 |= 0x10;
}
if ($noteEffect->isTapping() || $noteEffect->isSlapping() || $noteEffect->isPopping()) {
$flags1 |= 0x20;
}
if ($noteEffect->isTremoloBar()) {
$flags2 |= 0x4;
}
if ($beat->getStroke()->getDirection() != Stroke::STROKE_NONE) {
$flags1 |= 0x40;
}
$this->writeUnsignedByte($flags1);
$this->writeUnsignedByte($flags2);
if (($flags1 & 0x20) != 0) {
if ($noteEffect->isTapping()) {
$this->writeUnsignedByte(1);
} else {
if ($noteEffect->isSlapping()) {
$this->writeUnsignedByte(2);
} else {
if ($noteEffect->isPopping()) {
$this->writeUnsignedByte(3);
}
}
}
}
if (($flags2 & 0x4) != 0) {
$this->writeTremoloBar($noteEffect->getTremoloBar());
}
if (($flags1 & 0x40) != 0) {
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_UP ? $this->toStrokeValue($beat->getStroke()) : 0);
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_DOWN ? $this->toStrokeValue($beat->getStroke()) : 0);
}
}