PhysicsWorld.h

#pragma once
#include "IParaPhysics.h"
#include <list>

// #define INVERT_PHYSICS_FACE_WINDING

namespace ParaEngine
{
    struct MeshEntity;
    struct ParaXEntity;

    class CPhysicsWorld : public IAttributeFields
    {
    public:
        class TriangleMeshShape;
        typedef std::list<TriangleMeshShape*> TriangleMeshShape_Map_Type;

        struct SubMeshPhysicsShape
        {
        public:
            SubMeshPhysicsShape():m_nPhysicsGroup(0), m_pShape(NULL){};
            SubMeshPhysicsShape(IParaPhysicsShape* pShape, int nPhysicsGroup=0):m_nPhysicsGroup(nPhysicsGroup), m_pShape(pShape){};
            IParaPhysicsShape* m_pShape;
            int m_nPhysicsGroup;
        };
        class TriangleMeshShape
        {
        public:
            union {
                MeshEntity* m_pMeshEntity;  
                ParaXEntity* m_pParaXEntity;    
            };
            
            Vector3 m_vScale;       
            std::vector<SubMeshPhysicsShape> m_pShapes;
        
            TriangleMeshShape ():m_pMeshEntity(NULL), m_vScale (1.f,1.f,1.f){}
        };

    public:
        CPhysicsWorld(void);
        virtual ~CPhysicsWorld(void);
    
        ATTRIBUTE_DEFINE_CLASS(CPhysicsWorld);

        void InitPhysics();

        void ExitPhysics();

        void ResetPhysics();

        void StepSimulation(double dTime);

        IParaPhysicsActor* CreateStaticMesh(MeshEntity* ppMesh, const Matrix4& globalMat, uint32 nShapeGroup = 0, vector<IParaPhysicsActor*>* pOutputPhysicsActor = NULL, void* pUserData=NULL);
        IParaPhysicsActor* CreateStaticMesh(ParaXEntity* ppMesh, const Matrix4& globalMat, uint32 nShapeGroup = 0, vector<IParaPhysicsActor*>* pOutputPhysicsActor = NULL, void* pUserData = NULL);

        void ReleaseActor(IParaPhysicsActor* pActor);

        void SetDynamicsSimulationEnabled(bool bEnable);
        bool IsDynamicsSimulationEnabled();

    public:
        IParaPhysics* GetPhysicsInterface();

    public:
        IParaPhysics*     m_pPhysicsWorld;

        TriangleMeshShape_Map_Type  m_listMeshShapes;

        bool m_bRunDynamicSimulation;
    };
}