CWE-ou-minkata/Sources/Plasma/FeatureLib/pfAnimation/plViewFaceModifier.h

/*==LICENSE==*

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*==LICENSE==*/
#ifndef plViewFaceModifier_inc
#define plViewFaceModifier_inc

#include "hsMatrix44.h"
#include "hsBounds.h"
#include "pnModifier/plSingleModifier.h"

class plGenRefMsg;
class plPipeline;

class plViewFaceModifier : public plSingleModifier
{
public:
    enum plVFFlags {
        kPivotFace          = 0,
        kPivotFavorY,
        kPivotY,
        kPivotTumble,
        kScale,
        kFaceCam,
        kFaceList,
        kFacePlay,
        kFaceObj,
        kOffset,
        kOffsetLocal,
        kMaxBounds
    };
protected:

    hsVector3               fLastDirY;

    hsVector3               fScale;

    hsMatrix44              fOrigLocalToParent;
    hsMatrix44              fOrigParentToLocal;

    hsPoint3                fFacePoint;

    plSceneObject*          fFaceObj;

    hsVector3               fOffset;

    hsBounds3Ext            fMaxBounds;

    virtual hsBool IFacePoint(plPipeline* pipe, const hsPoint3& at);
    virtual hsBool IEval(double secs, hsScalar del, UInt32 dirty);

    enum RefType
    {
        kRefFaceObj
    };
    void            IOnReceive(plGenRefMsg* refMsg);
    void            IOnRemove(plGenRefMsg* refMsg);
    void            ISetObject(plKey soKey);

public:
    plViewFaceModifier();
    virtual ~plViewFaceModifier();

    CLASSNAME_REGISTER( plViewFaceModifier );
    GETINTERFACE_ANY( plViewFaceModifier, plSingleModifier );
    
    virtual void SetTarget(plSceneObject* so);

    virtual void Read(hsStream* stream, hsResMgr* mgr);
    virtual void Write(hsStream* stream, hsResMgr* mgr);

    virtual hsBool MsgReceive(plMessage* msg);

    // ViewFace specific
    void SetScale(const hsVector3& s) { fScale = s; }
    const hsVector3& GetScale() const { return fScale; }

    void SetOrigTransform(const hsMatrix44& l2p, const hsMatrix44& p2l);

    void SetMaxBounds(const hsBounds3Ext& bnd);
    const hsBounds3Ext& GetMaxBounds() const { return fMaxBounds; }
    hsBool HaveMaxBounds() const { return HasFlag(kMaxBounds); }

    enum FollowMode
    {
        kFollowCamera           = 0, // Follow the camera
        kFollowListener,
        kFollowPlayer,
        kFollowObject
    };
    void            SetFollowMode(FollowMode m, plKey soKey=nil); // For follow object, set obj, else it's ignored.
    FollowMode      GetFollowMode() const;
    plSceneObject*  GetFollowObject() const { return fFaceObj; }

    void                SetOffsetActive(hsBool on) { if(on) SetFlag(kOffset); else ClearFlag(kOffset); }
    hsBool              GetOffsetActive() const { return HasFlag(kOffset); }

    void                SetOffset(const hsVector3& off, hsBool local=true);
    const hsVector3&    GetOffset() const { return fOffset; }
    hsBool              GetOffsetLocal() const { return HasFlag(kOffsetLocal); }
};

#endif // plViewFaceModifier_inc