Program Listing for File SceneSystem.hpp

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#pragma once
#include "../System.hpp"
#include "../EventSubscriber.hpp"
#include "../../gfx/FrameData.hpp"

namespace ari
{
    class Camera;
    class BoxShape;
    class Node;

    class ARI_API SceneSystem: public System,
        public EventSubscriber<events::OnEntityCreated>,
        public EventSubscriber<events::OnEntityDestroyed>,
        public EventSubscriber<events::OnComponentAssigned<Camera>>,
        public EventSubscriber<events::OnComponentRemoved<Camera>>,
        public EventSubscriber<events::OnComponentAssigned<BoxShape>>,
        public EventSubscriber<events::OnComponentRemoved<BoxShape>>
    {
    public:

        SceneSystem();

        ~SceneSystem();

        void Update(World* p_world, UpdateState state) override;
        void Configure(World* p_world) override;
        void Unconfigure(World* p_world) override;
        Type GetSystemType() override
        {
            return Type::SceneSystem;
        }
        bool NeedUpdateOnState(UpdateState state) override;

        void Receive(World* world, const events::OnEntityCreated& event) override;
        void Receive(World* world, const events::OnEntityDestroyed& event) override;
        void Receive(World* world, const events::OnComponentAssigned<Camera>& event) override;
        void Receive(World* world, const events::OnComponentRemoved<Camera>& event) override;
        void Receive(World* world, const events::OnComponentAssigned<BoxShape>& event) override;
        void Receive(World* world, const events::OnComponentRemoved<BoxShape>& event) override;

    protected:

        Camera * m_pActiveCamera;
        FrameData   *   m_FrameDatasUnused,         // This is the unused frame data pointers
                    *   m_FrameDatasTransforms,     // This is the transform calculated nodes
                    *   m_FrameDatasVisible;        // This is the visible nodes that must be rendered.

        void CalcTransform(Node* node, Matrix* parentMat);

    }; // SceneSystem

} // ari