IParaPhysics.h

#pragma once
#include "PEtypes.h"

namespace ParaEngine
{
    class IParaDebugDraw;

    enum PhysicsDebugDrawModes
    {
        PDDM_NoDebug=0,
        PDDM_DrawWireframe = 1,
        PDDM_DrawAabb=2,
        PDDM_DrawFeaturesText=4,
        PDDM_DrawContactPoints=8,
        PDDM_NoDeactivation=16,
        PDDM_NoHelpText = 32,
        PDDM_DrawText=64,
        PDDM_ProfileTimings = 128,
        PDDM_EnableSatComparison = 256,
        PDDM_DisableBulletLCP = 512,
        PDDM_EnableCCD = 1024,
        PDDM_DrawConstraints = (1 << 11),
        PDDM_DrawConstraintLimits = (1 << 12),
        PDDM_FastWireframe = (1<<13),
        PDDM_MAX_DEBUG_DRAW_MODE
    };

    struct ParaPhysicsTriangleMeshDesc
    {
        DWORD m_numVertices;
        DWORD m_numTriangles;
        DWORD m_pointStrideBytes;
        DWORD m_triangleStrideBytes;
        void* m_points;
        void* m_triangles;
        DWORD m_flags;
    };

    struct IParaPhysicsShape
    {
        virtual void* GetUserData() = 0;
        virtual void SetUserData(void* pData) = 0;
        
        virtual void* get() = 0;

        virtual void Release() = 0;
    };

    struct ParaPhysicsActorDesc
    {
        ParaPhysicsActorDesc():m_mass(0.f), m_group(1), m_mask(-1), m_pShape(NULL) {}
        PARAVECTOR3 m_origin;

        PARAMATRIX3x3 m_rotation;

        float m_mass;

        short m_group;

        short m_mask;

        IParaPhysicsShape* m_pShape;
    };

    struct IParaPhysicsActor
    {
        virtual void* GetUserData() = 0;
        virtual void SetUserData(void* pData) = 0;

        virtual void* get() = 0;

        virtual void Release() = 0;
    };

    struct RayCastHitResult
    {
        float m_fDistance;
        PARAVECTOR3 m_vHitPointWorld;
        PARAVECTOR3 m_vHitNormalWorld;
    };

    class IParaPhysics
    {
    public:
        virtual bool InitPhysics() = 0;

        virtual bool StepSimulation(float fDeltaTime) = 0;

        virtual bool ExitPhysics() = 0;

        virtual void Release() = 0;

        virtual IParaPhysicsShape* CreateTriangleMeshShap(const ParaPhysicsTriangleMeshDesc& meshDesc) = 0;

        virtual void ReleaseShape(IParaPhysicsShape *pShape) = 0;

        virtual IParaPhysicsActor* CreateActor(const ParaPhysicsActorDesc& meshDesc) = 0;

        virtual void ReleaseActor(IParaPhysicsActor* pActor) = 0;

        virtual IParaPhysicsActor* RaycastClosestShape(const PARAVECTOR3& vOrigin, const PARAVECTOR3& vDirection, DWORD dwType, RayCastHitResult& hit, short dwGroupMask, float fSensorRange) = 0;

        virtual void    SetDebugDrawer(IParaDebugDraw*  debugDrawer) = 0;
        
        virtual IParaDebugDraw* GetDebugDrawer() = 0;

        virtual void DebugDrawObject(const PARAVECTOR3& vOrigin, const PARAMATRIX3x3& vRotation, const IParaPhysicsShape* pShape, const PARAVECTOR3& color) = 0;

        virtual void DebugDrawWorld() = 0;

        virtual void    SetDebugDrawMode(int debugMode) = 0;

        virtual int     GetDebugDrawMode() = 0;
    };
}