private function writeGrace(EffectGrace $grace)
{
if ($grace->isDead()) {
$this->writeUnsignedByte(255);
} else {
$this->writeUnsignedByte($grace->getFret());
}
$this->writeUnsignedByte(intval(($grace->getDynamic() - Velocities::MIN_VELOCITY) / Velocities::VELOCITY_INCREMENT + 1));
if ($grace->getTransition() == EffectGrace::TRANSITION_NONE) {
$this->writeUnsignedByte(0);
} else {
if ($grace->getTransition() == EffectGrace::TRANSITION_SLIDE) {
$this->writeUnsignedByte(1);
} else {
if ($grace->getTransition() == EffectGrace::TRANSITION_BEND) {
$this->writeUnsignedByte(2);
} else {
if ($grace->getTransition() == EffectGrace::TRANSITION_HAMMER) {
$this->writeUnsignedByte(3);
}
}
}
}
$this->writeUnsignedByte($grace->getDuration());
}
/**
* Reads GraceEffect
*
* @param NoteEffect $effect
*/
public function readGrace(NoteEffect $effect)
{
$fret = $this->readUnsignedByte();
$grace = new EffectGrace();
$grace->setOnBeat(false);
$grace->setDead($fret == 255);
$grace->setFret(!$grace->isDead() ? $fret : 0);
$grace->setDynamic(Velocities::MIN_VELOCITY + Velocities::VELOCITY_INCREMENT * $this->readUnsignedByte() - Velocities::VELOCITY_INCREMENT);
$transition = $this->readUnsignedByte();
if ($transition == 0) {
$grace->setTransition(EffectGrace::TRANSITION_NONE);
} else {
if ($transition == 1) {
$grace->setTransition(EffectGrace::TRANSITION_SLIDE);
} else {
if ($transition == 2) {
$grace->setTransition(EffectGrace::TRANSITION_BEND);
} else {
if ($transition == 3) {
$grace->setTransition(EffectGrace::TRANSITION_HAMMER);
}
}
}
}
$grace->setDuration($this->readUnsignedByte());
$effect->setGrace($grace);
}
/**
* Reads EffectGrace
*
* @param NoteEffect $effect
*/
private function readGrace(NoteEffect $effect)
{
$fret = $this->reader->readUnsignedByte();
$dynamic = $this->reader->readUnsignedByte();
$transition = $this->reader->readByte();
$duration = $this->reader->readUnsignedByte();
$flags = $this->reader->readUnsignedByte();
$grace = new EffectGrace();
$grace->setFret($fret);
$grace->setDynamic(Velocities::MIN_VELOCITY + Velocities::VELOCITY_INCREMENT * $dynamic - Velocities::VELOCITY_INCREMENT);
$grace->setDuration($duration);
$grace->setDead(($flags & 0x1) != 0);
$grace->setOnBeat(($flags & 0x2) != 0);
if ($transition == 0) {
$grace->setTransition(EffectGrace::TRANSITION_NONE);
} else {
if ($transition == 1) {
$grace->setTransition(EffectGrace::TRANSITION_SLIDE);
} else {
if ($transition == 2) {
$grace->setTransition(EffectGrace::TRANSITION_BEND);
} else {
if ($transition == 3) {
$grace->setTransition(EffectGrace::TRANSITION_HAMMER);
}
}
}
}
$effect->setGrace($grace);
}