Merge branch 'master' into OctTree

# Conflicts:
#	src/Game/Game.cpp

src/Engine/Core/EntityXMLFile.cpp

@@ -431,12 +431,12 @@ float EntityXMLFile::getFloatAttribute(const xercesc::DOMElement* element, const
 {
     using namespace xercesc;
     XSValue::Status status;
-    XSValue* val = XSValue::getActualValue(element->getAttribute(XSTR(attribute)), xercesc::XSValue::DataType::dt_float, status);
+    XSValue* val = XSValue::getActualValue(element->getAttribute(XSTR(attribute)), xercesc::XSValue::DataType::dt_double, status);
     if (val == nullptr) {
         LOG_ERROR("Element \"%s\" doesn't have an \"%s\" attribute!", XSTR(element->getTagName()), attribute);
         return 0.f;
     } else {
-        return val->fData.fValue.f_float;
+        return static_cast<float>(val->fData.fValue.f_double);
     }
 }
 

src/Engine/Core/World.cpp

@@ -99,6 +99,22 @@ EntityID World::GetParent(EntityID entity)
     return m_EntityParents.at(entity);
 }
 
+
+void World::SetParent(EntityID entity, EntityID parent)
+{
+    EntityID lastParent = m_EntityParents.at(entity);
+    auto parentChildren = m_EntityChildren.equal_range(lastParent);
+    for (auto it = parentChildren.first; it != parentChildren.second; it++) {
+        if (it->second == entity) {
+            m_EntityChildren.erase(it);
+            break;
+        }
+    }
+
+    m_EntityParents[entity] = parent;
+    m_EntityChildren.insert(std::make_pair(parent, entity));
+}
+
 EntityID World::generateEntityID()
 {
     // TODO: Make EntityID generation smarter