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lock entity-tree before accessing entities

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This commit is contained in:
Seth Alves 2016-04-21 15:27:15 -07:00
parent b088191966
commit e2025b0d1f
1 changed files with 13 additions and 10 deletions
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23
libraries/entities-renderer/src/EntityTreeRenderer.cpp
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@ -820,16 +820,24 @@ void EntityTreeRenderer::playEntityCollisionSound(const QUuid& myNodeID, EntityT
return;
}
EntityItemPointer entity = entityTree->findEntityByEntityItemID(id);
if (!entity) {
QString collisionSoundURL;
float mass = 1.0; // value doesn't get used, but set it so compiler is quiet
AACube minAACube;
bool success = false;
_tree->withReadLock([&] {
EntityItemPointer entity = entityTree->findEntityByEntityItemID(id);
if (entity) {
collisionSoundURL = entity->getCollisionSoundURL();
mass = entity->computeMass();
minAACube = entity->getMinimumAACube(success);
}
});
if (!success) {
return;
}
const QString& collisionSoundURL = entity->getCollisionSoundURL();
if (collisionSoundURL.isEmpty()) {
return;
}
const float mass = entity->computeMass();
const float COLLISION_PENETRATION_TO_VELOCITY = 50; // as a subsitute for RELATIVE entity->getVelocity()
// The collision.penetration is a pretty good indicator of changed velocity AFTER the initial contact,
// but that first contact depends on exactly where we hit in the physics step.
@ -854,11 +862,6 @@ void EntityTreeRenderer::playEntityCollisionSound(const QUuid& myNodeID, EntityT
// Shift the pitch down by ln(1 + (size / COLLISION_SIZE_FOR_STANDARD_PITCH)) / ln(2)
const float COLLISION_SIZE_FOR_STANDARD_PITCH = 0.2f;
bool success;
auto minAACube = entity->getMinimumAACube(success);
if (!success) {
return;
}
const float stretchFactor = log(1.0f + (minAACube.getLargestDimension() / COLLISION_SIZE_FOR_STANDARD_PITCH)) / log(2);
AudioInjector::playSound(collisionSoundURL, volume, stretchFactor, position);
}