World::MemoryUsage returns approximate value of component pool memory usage

src/Engine/Core/ComponentPool.cpp

@@ -112,6 +112,11 @@ size_t ComponentPool::size() const
     return m_Pool.size();
 }
 
+std::size_t ComponentPool::MemoryUsage() const
+{
+    return m_Pool.MemoryUsage();
+}
+
 template <typename InterpretType /*= char*/>
 void ComponentPool::Dump() const
 {

src/Engine/Core/World.cpp

@@ -151,6 +151,17 @@ std::string World::GetName(EntityID entity) const
     }
 }
 
+std::size_t World::MemoryUsage() const
+{
+    std::size_t mem = 0;
+
+    for (auto& kv : m_ComponentPools) {
+        mem += kv.second->MemoryUsage();
+    }
+
+    return mem;
+}
+
 EntityID World::generateEntityID()
 {
     // TODO: Make EntityID generation smarter