RenderTracer.h

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#if !defined(__INCLUDE_RenderTracerh_INCLUDE__)
#define __INCLUDE_RenderTracerh_INCLUDE__

#include <list>
#include <map>
#include <common/Vector.h>
#include <GLEXT/GLState.h>
#include <engine/GameStateI.h>

class Tank;
class RenderTracer : public GameStateI
{
public:
        static RenderTracer *instance();

        struct TracerLinePoint
        {
                Vector position;
                Vector cross;
        };

        virtual void draw(const unsigned state);

        void drawTracerEnd(Vector &position);
        void drawSmokeTracer(std::list<TracerLinePoint> &positions);

        void newGame();
        void clearTracers();
        void clearTracerLines();
        void addTracer(unsigned int tank, 
                Vector &position);
        void addSmokeTracer(unsigned int tank, 
                Vector &position, std::list<TracerLinePoint> &positions);

protected:
        static RenderTracer *instance_;
        class TraceEntry
        {
        public:
                TraceEntry(unsigned int t = 0) : tank(t) {}

                unsigned int tank;
                std::list<Vector> points;
                std::list<std::list<TracerLinePoint> > lines;
        };

        std::map<unsigned int, TraceEntry> traceEntries_;
        TraceEntry *current_;
        GLUquadric *obj_;
        GLuint listNo_;

private:
        RenderTracer();
        virtual ~RenderTracer();

};

#endif

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