ItemSorter.h

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/*
Copyright (C) 2003-2005 The Pentagram team

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef ITEMSORTER_H
#define ITEMSORTER_H

#include <vector>

class MainShapeArchive;
class Item;
class RenderSurface;
struct SortItem;

class ItemSorter
{
        MainShapeArchive        *shapes;
        RenderSurface   *surf;

        uint32          max_items;
        uint32          num_items;
        uint32          num_extra;
        SortItem        *items;
        sint32          sort_limit;

        sint32          order_counter;

        sint32          cam_sx, cam_sy;

public:
        ItemSorter(int Max_Items = 2048);
        ~ItemSorter();

        enum HitFace {
                X_FACE, Y_FACE, Z_FACE
        };

        // Begin creating the display list
        void BeginDisplayList(RenderSurface*,
                                                  sint32 camx, sint32 camy, sint32 camz);

        void AddItem(sint32 x, sint32 y, sint32 z, uint32 shape_num, uint32 frame_num, uint32 item_flags, uint32 ext_flags, uint16 item_num=0);
        void AddItem(Item *);                                   // Add an Item. SetupLerp() MUST have been called

        void PaintDisplayList(bool item_highlight=false);                               // Finishes the display list and Paints

        // Trace and find an object. Returns objid.
        // If face is non-NULL, also return the face of the 3d bbox (x,y) is on
        uint16 Trace(sint32 x, sint32 y, HitFace* face = 0, bool item_highlight=false );

        void IncSortLimit() { sort_limit++; }
        void DecSortLimit() { if (sort_limit > 0) sort_limit--; }

private:
        bool PaintSortItem(SortItem     *);
        bool NullPaintSortItem(SortItem *);
};


#endif //ITEMSORTER_H

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