Light3DSpot.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_LIGHT3D_SPOT_H
#define HPL_LIGHT3D_SPOT_H

#include "hpl1/engine/scene/Light3D.h"

namespace hpl {

class cResources;
class iTexture;
class cFrustum;

//------------------------------------------

kSaveData_ChildClass(iLight3D, cLight3DSpot) {
    kSaveData_ClassInit(cLight3DSpot) public : tString msTexture;

    float mfFOV;
    float mfAspect;
    float mfNearClipPlane;

    virtual iSaveObject *CreateSaveObject(cSaveObjectHandler * apSaveObjectHandler, cGame * apGame);
    virtual int GetSaveCreatePrio();
};

//------------------------------------------

class cLight3DSpot : public iLight3D {
    typedef iLight3D super;

public:
    cLight3DSpot(tString asName, cResources *apResources);
    ~cLight3DSpot();

    const cMatrixf &GetViewMatrix();
    const cMatrixf &GetProjectionMatrix();
    const cMatrixf &GetViewProjMatrix();

    void SetTexture(iTexture *apTexture);
    iTexture *GetTexture();

    void SetFOV(float afAngle) {
        mfFOV = afAngle;
        mbProjectionUpdated = true;
    }
    float GetFOV() { return mfFOV; }

    void SetAspect(float afAngle) {
        mfAspect = afAngle;
        mbProjectionUpdated = true;
    }
    float GetAspect() { return mfAspect; }

    void SetNearClipPlane(float afX) {
        mfNearClipPlane = afX;
        mbProjectionUpdated = true;
    }
    float GetNearClipPlane() { return mfNearClipPlane; }

    void SetFarAttenuation(float afX);
    void SetNearAttenuation(float afX);

    cFrustum *GetFrustum();

    bool CollidesWithBV(cBoundingVolume *apBV);

    // SaveObject implementation
    virtual iSaveData *CreateSaveData();
    virtual void SaveToSaveData(iSaveData *apSaveData);
    virtual void LoadFromSaveData(iSaveData *apSaveData);
    virtual void SaveDataSetup(cSaveObjectHandler *apSaveObjectHandler, cGame *apGame);

private:
    cSectorVisibilityContainer *CreateSectorVisibility();
    void ExtraXMLProperties(TiXmlElement *apMainElem);
    void UpdateBoundingVolume();
    bool CreateClipRect(cRect2l &aCliprect, cRenderSettings *apRenderSettings, iLowLevelGraphics *apLowLevelGraphics);

    cMatrixf m_mtxProjection;
    cMatrixf m_mtxViewProj;
    cMatrixf m_mtxView;

    cFrustum *mpFrustum;

    iTexture *mpTexture;

    float mfFOV;
    float mfAspect;
    float mfNearClipPlane;

    bool mbProjectionUpdated;
    bool mbViewProjUpdated;
    bool mbFrustumUpdated;

    int mlViewProjMatrixCount;
    int mlViewMatrixCount;
    int mlFrustumMatrixCount;
};

} // namespace hpl

#endif // HPL_LIGHT3D_SPOT_H