Engine.cpp

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#include "Engine.h"
 
#include "Event/EventHandler.h"
 
#include "EntityManager.h"
#include "ComponentManager.h"
#include "SystemManager.h"
 
#include "util/Timer.h"
 
namespace ECS
{
    ECSEngine::ECSEngine()
    {
        ECS_EngineTime          = new util::Timer();
        ECS_EventHandler        = new Event::EventHandler();
        ECS_SystemManager       = new SystemManager();
        ECS_ComponentManager    = new ComponentManager();
        ECS_EntityManager       = new EntityManager(this->ECS_ComponentManager);
    }
 
    ECSEngine::~ECSEngine()
    {
        delete ECS_EntityManager;
        ECS_EntityManager = nullptr;
 
        delete ECS_ComponentManager;
        ECS_ComponentManager = nullptr;
 
        delete ECS_SystemManager;
        ECS_SystemManager = nullptr;
 
        delete ECS_EventHandler;
        ECS_EventHandler = nullptr;
    }
 
    void ECSEngine::PreUpdate(f32 tick_ms)
    {
        // Advance engine time
        ECS_EngineTime->Tick(tick_ms);
 
        // Update all running systems
        ECS_SystemManager->PreUpdate(tick_ms);
    }
 
    void ECSEngine::Update(f32 tick_ms)
    {
        // Update all running systems
        ECS_SystemManager->Update(tick_ms);
    }
 
    void ECSEngine::PostUpdate(f32 tick_ms)
    {
        ECS_SystemManager->PostUpdate(tick_ms);
        // Finalize pending destroyed entities
        ECS_EntityManager->RemoveDestroyedEntities();
        ECS_EventHandler->DispatchEvents();
    }
 
    void ECSEngine::OnFrameStart()
    {
        ECS_SystemManager->OnFrameStart();
        ECS_EventHandler->DispatchEvents();
    }
 
    void ECSEngine::OnFrameEnd()
    {
        ECS_SystemManager->OnFrameEnd();
        ECS_EventHandler->DispatchEvents();
    }
 
    void ECSEngine::UnsubscribeEvent(Event::Internal::IEventDelegate* eventDelegate)
    {
        ECS_EventHandler->RemoveEventCallback(eventDelegate);
    }
 
} // namespace ECS