Basic collisions using Octree. Seems buggy over octree boundaries.

src/Engine/Collision/CollidableOctreeSystem.cpp

@@ -0,0 +1,20 @@
+#include "Collision/CollidableOctreeSystem.h"
+
+void CollidableOctreeSystem::Update(World* world, double dt)
+{
+    m_Octree->ClearDynamicObjects();
+}
+
+void CollidableOctreeSystem::UpdateComponent(World* world, ComponentWrapper& cCollidable, double dt)
+{
+    EntityID entity = cCollidable.EntityID;
+
+    if (world->HasComponent(entity, "AABB")) {
+        boost::optional<AABB> absoluteAABB = Collision::EntityAbsoluteAABB(world, entity);
+        if (absoluteAABB) {
+            m_Octree->AddDynamicObject(*absoluteAABB);
+        }
+    } else if (world->HasComponent(entity, "Model")) {
+        // TODO: Derive AABB from model
+    }
+}