Entity: add simple method to check for components

Change-Id: I560089e499aa8e98415b00b3131a5e9923c1a551
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/src/render/backend/entity.cpp b/src/render/backend/entity.cpp
index 1eec44f7b..7091d493f 100644
--- a/src/render/backend/entity.cpp
+++ b/src/render/backend/entity.cpp
@@ -166,6 +166,7 @@ void Entity::initializeFromPeer(const QNodeCreatedChangeBasePtr &change)
     m_geometryRendererComponent = QNodeId();
     m_objectPickerComponent = QNodeId();
     m_boundingVolumeDebugComponent = QNodeId();
+    m_computeComponent = QNodeId();
     m_layerComponents.clear();
     m_shaderDataComponents.clear();
     m_lightComponents.clear();
diff --git a/src/render/backend/entity_p.h b/src/render/backend/entity_p.h
index 49f5f4106..cf6c0117b 100644
--- a/src/render/backend/entity_p.h
+++ b/src/render/backend/entity_p.h
@@ -153,6 +153,19 @@ public:
         return QVector<Qt3DCore::QNodeId>();
     }
 
+    template<typename T>
+    bool containsComponentsOfType()
+    {
+        return !componentUuid<T>().isNull();
+    }
+
+    template<typename T, typename Ts, typename ... Ts2>
+    bool containsComponentsOfType()
+    {
+        return containsComponentsOfType<T>() && containsComponentsOfType<Ts, Ts2...>();
+    }
+
+
 private:
     void initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change) Q_DECL_FINAL;