From 44fe7c11443ddab37f97ec8a85ffad17cc3831d9 Mon Sep 17 00:00:00 2001
From: David Rowe <david@ctrlaltstudio.com>
Date: Thu, 2 Jun 2016 21:26:33 +1200
Subject: [PATCH] Add Entities.getChildrenIDs() method

---
 .../entities/src/EntityScriptingInterface.cpp | 21 +++++++++++++++++++
 .../entities/src/EntityScriptingInterface.h   |  1 +
 2 files changed, 22 insertions(+)

diff --git a/libraries/entities/src/EntityScriptingInterface.cpp b/libraries/entities/src/EntityScriptingInterface.cpp
index 15c2bffd80..d09fc60d9b 100644
--- a/libraries/entities/src/EntityScriptingInterface.cpp
+++ b/libraries/entities/src/EntityScriptingInterface.cpp
@@ -1121,6 +1121,27 @@ QStringList EntityScriptingInterface::getJointNames(const QUuid& entityID) {
     return result;
 }
 
+QVector<QUuid> EntityScriptingInterface::getChildrenIDs(const QUuid& parentID) {
+    QVector<QUuid> result;
+    if (!_entityTree) {
+        return result;
+    }
+
+    EntityItemPointer entity = _entityTree->findEntityByEntityItemID(parentID);
+    if (!entity) {
+        qDebug() << "EntityScriptingInterface::getChildrenIDs - no entity with ID" << parentID;
+        return result;
+    }
+
+    _entityTree->withReadLock([&] {
+        entity->forEachChild([&](SpatiallyNestablePointer child) {
+            result.push_back(child->getID());
+        });
+    });
+
+    return result;
+}
+
 QVector<QUuid> EntityScriptingInterface::getChildrenIDsOfJoint(const QUuid& parentID, int jointIndex) {
     QVector<QUuid> result;
     if (!_entityTree) {
diff --git a/libraries/entities/src/EntityScriptingInterface.h b/libraries/entities/src/EntityScriptingInterface.h
index 2f5446874b..8ae6a77dab 100644
--- a/libraries/entities/src/EntityScriptingInterface.h
+++ b/libraries/entities/src/EntityScriptingInterface.h
@@ -171,6 +171,7 @@ public slots:
 
     Q_INVOKABLE int getJointIndex(const QUuid& entityID, const QString& name);
     Q_INVOKABLE QStringList getJointNames(const QUuid& entityID);
+    Q_INVOKABLE QVector<QUuid> getChildrenIDs(const QUuid& parentID);
     Q_INVOKABLE QVector<QUuid> getChildrenIDsOfJoint(const QUuid& parentID, int jointIndex);
 
 signals: