ActorScroller.h

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/* ActorScroller - ActorFrame that moves its children. */

#ifndef ActorScroller_H
#define ActorScroller_H

#include "ActorFrame.h"

struct XNode;
class ActorScroller : public ActorFrame
{
public:
        ActorScroller();

        void Load( 
                float fScrollSecondsPerItem, 
                float fNumItemsToDraw, 
                const RageVector3       &vRotationDegrees,
                const RageVector3       &vTranslateTerm0,
                const RageVector3       &vTranslateTerm1,
                const RageVector3       &vTranslateTerm2 );

        virtual void Update( float fDelta );
        virtual void DrawPrimitives();  // DOES draw

        void LoadFromNode( const CString &sDir, const XNode *pNode );
        void SetDestinationItem( int iItem ) { m_fDestinationItem = float(iItem); }
        void SetCurrentAndDestinationItem( int iItem ) { m_fCurrentItem = m_fDestinationItem = float(iItem); }

protected:
        bool            m_bLoaded;
        float           m_fCurrentItem; // usually between 0 and m_SubActors.size()
        float           m_fDestinationItem;
        float           m_fSecondsPerItem;              // <= 0 means don't scroll
        float           m_fNumItemsToDraw;
        
        // Note: Rotation is applied before translation.

        // rot = m_vRotationDegrees*itemOffset^1
        RageVector3     m_vRotationDegrees;

        // trans = m_vTranslateTerm0*itemOffset^0 + 
        //                 m_vTranslateTerm1*itemOffset^1 +
        //                 m_vTranslateTerm2*itemOffset^2
        RageVector3     m_vTranslateTerm0;
        RageVector3     m_vTranslateTerm1;
        RageVector3     m_vTranslateTerm2;
};

#endif

/*
 * (c) 2003-2004 Chris Danford
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, provided that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the Software and that both the above copyright notice(s) and this
 * permission notice appear in supporting documentation.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
 * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

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