raycastfull3dquery.h

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/*
* Copyright 2016 Autodesk, Inc. All rights reserved.
* Use of this software is subject to the terms of the Autodesk license agreement and any attachments or Appendices thereto provided at the time of installation or download,
* or which otherwise accompanies this software in either electronic or hard copy form, or which is signed by you and accepted by Autodesk.
*/

#pragma once

#include "gwnavruntime/querysystem/iquery.h"
#include "gwnavruntime/navmesh/identifiers/navtriangleptr.h"
#include "gwnavruntime/math/vec3f.h"
#include "gwnavruntime/navmesh/worldintegerpos.h"

namespace Kaim
{

class NavFloor;
class Box3f;

enum RayCast3dQueryResult
{
    RAYCAST3D_NOT_INITIALIZED = QUERY_NOT_INITIALIZED, 
    RAYCAST3D_NOT_PROCESSED   = QUERY_NOT_PROCESSED,   

    RAYCAST3D_DONE_NO_HIT,                  
    RAYCAST3D_DONE_HIT                      
};

class RayCastFull3dQuery : public IAtomicQuery
{
public:
    static  QueryType GetStaticType() { return TypeRayCastFull3D; }
    virtual QueryType GetType() const { return TypeRayCastFull3D; }

    // ------------------------------ Functions -----------------------------

    RayCastFull3dQuery();
    virtual ~RayCastFull3dQuery() {}

    // ---------------------------------- Functions to set up the query ----------------------------------

    void BindToDatabase(Database* database);

    void Initialize(const Vec3f& startPos, const Vec3f& destPos);

    // ---------------------------------- Query framework functions ----------------------------------

    virtual void Advance(WorkingMemory* workingMemory)
    {
        PerformQuery(workingMemory);
        m_processStatus = QueryDone;
    }

    void PerformQuery(WorkingMemory* workingMemory = nullptr);

    // ---------------------------------- Accessors ----------------------------------

    RayCast3dQueryResult GetResult() const { return m_result; }

public: // internal
    void SetResult(RayCast3dQueryResult result) { m_result = result; }
    class RayCastData
    {
    public:
        RayCastData(const Vec3f& startPos, const Vec3f& destPos) : m_dir(destPos-startPos), m_dirInv(1.f, 1.f, 1.f)
        {
            m_dirIsNullOnAxis[0] = false;
            m_dirIsNullOnAxis[1] = false;
            m_dirIsNullOnAxis[2] = false;
        }
    public:
        Vec3f m_dir;
        Vec3f m_dirInv;
        CoordBox64 m_coordBoxOfTest;
        bool m_dirIsNullOnAxis[3];
    };

    void CollideAgainsttriangle(const Vec3f& a, const Vec3f& b, const Vec3f& c, KyFloat32& currentCollisionDistance);
    void RayCast3DAgainstNavFloor(NavFloor* navFloor, const RayCastData& rayCastData, const CoordPos64& cellOrigin, KyFloat32& currentCollisionDistance);
    bool RayVersusBox3f(const RayCastData& rayCastData, const Box3f& box);

public:
    Vec3f m_startPos3f; 
    Vec3f m_destPos3f; 
    Vec3f m_collisionPoint3f; 

    NavTrianglePtr m_resultTrianglePtr;

    RayCast3dQueryResult m_result; 
};

}