FrustumOctree has its own system, won't cull away explosion effects.

src/Engine/Collision/FillFrustumOctreeSystem.cpp

@@ -0,0 +1,21 @@
+#include "Collision/FillFrustumOctreeSystem.h"
+
+void FillFrustumOctreeSystem::Update(double dt)
+{
+    m_Octree->ClearDynamicObjects();
+}
+
+void FillFrustumOctreeSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& component, double dt)
+{
+    if (entity.HasComponent("ExplosionEffect")) {
+        //TODO: Fix hack, get real box by using shader equation.
+        EntityAABB aabb = AABB(glm::vec3(-300), glm::vec3(300));
+        aabb.Entity = entity;
+        m_Octree->AddDynamicObject(aabb);
+    } else {
+        boost::optional<EntityAABB> absoluteAABB = Collision::EntityAbsoluteAABB(entity);
+        if (absoluteAABB) {
+            m_Octree->AddDynamicObject(*absoluteAABB);
+        }
+    }
+}

src/Game/Game.cpp

@@ -1,5 +1,6 @@
 #include "Game.h"
 #include "Collision/FillOctreeSystem.h"
+#include "Collision/FillFrustumOctreeSystem.h"
 #include "Collision/EntityAABB.h"
 #include "Collision/TriggerSystem.h"
 #include "Collision/CollisionSystem.h"
@@ -101,7 +102,7 @@ Game::Game(int argc, char* argv[])
     ++updateOrderLevel;
     m_SystemPipeline->AddSystem<FillOctreeSystem>(updateOrderLevel, m_OctreeCollision, "Collidable");
     m_SystemPipeline->AddSystem<FillOctreeSystem>(updateOrderLevel, m_OctreeTrigger, "Player");
-    m_SystemPipeline->AddSystem<FillOctreeSystem>(updateOrderLevel, m_OctreeFrustrumCulling, "Model");
+    m_SystemPipeline->AddSystem<FillFrustumOctreeSystem>(updateOrderLevel, m_OctreeFrustrumCulling);
     m_SystemPipeline->AddSystem<PlayerHUD>(updateOrderLevel);
     m_SystemPipeline->AddSystem<AnimationSystem>(updateOrderLevel);