/* 
    OgreNewt Library

    Ogre implementation of Newton Game Dynamics SDK

    OgreNewt basically has no license, you may use any or all of the library however you desire... I hope it can help you in any way.

        by Walaber
        some changes by melven

*/
#ifndef _INCLUDE_OGRENEWT_DEBUGGER
#define _INCLUDE_OGRENEWT_DEBUGGER


#include "OgreNewt_Prerequisites.h"
#include "OgreNewt_Tools.h"


namespace Ogre
{
    class ManualObject;
}

namespace OgreNewt
{


    //! For viewing the Newton rigid bodies visually.
    /*!
        This class implements a debug view of the Newton world. You can access it via World::getDebugger().
        It needs to be initialized (call World::getDebugger().init(...)).
    */
    class _OgreNewtExport Debugger : public Ogre::Node::Listener
    {
    
    public:
        ~Debugger();

        //! init the debugger.
        /*
            \param smgr pointer to your Ogre::SceneManager
        */
        void init( Ogre::SceneManager* smgr );

        //! de-init the debugger (cleantup)
        void deInit();

        //! called when one of the nodes used in this class are destroyed
        virtual void nodeDestroyed (const Ogre::Node *);

        //! show the newton world
        /*!
            Draws the Newton world as 3D lines with informative text above each body
        */
        void showDebugInformation();

        //! remove lines and text drawn
        void hideDebugInformation();
    
        //! set default color
        void setDefaultColor(Ogre::ColourValue col);

        //! set Material color
        void setMaterialColor(const MaterialID* mat, Ogre::ColourValue col);

        //! enable additional raycast-debugging (this also enables displaying of recorded raycasts!)
        void startRaycastRecording(bool markhitbodies = false);

        //! returns true, if currently recording raycasts
        bool isRaycastRecording();

        //! returns true, if hit bodies are currently recording
        bool isRaycastRecordingHitBodies();

        //! clears all raycasts, that are currently shown, should probably be done once per frame!
        void clearRaycastsRecorded();

        //! disables raycast-debugging
        void stopRaycastRecording();

        //! set the color of the raycast-debug-lines
        void setRaycastRecordingColor(Ogre::ColourValue rayCol, Ogre::ColourValue convexCol, Ogre::ColourValue hitBodyCol, Ogre::ColourValue prefilterDiscardedBodyCol);

        //! this function is used internally
        void addRay(const Ogre::Vector3 &startpt, const Ogre::Vector3 &endpt);

        //! this function is used internally
        void addConvexRay(const OgreNewt::ConvexCollisionPtr& col, const Ogre::Vector3 &startpt, const Ogre::Quaternion &colori, const Ogre::Vector3 &endpt);

        //! this function is used internally
        void addDiscardedBody(const OgreNewt::Body* body);

        //! this function is used internally
        void addHitBody(const OgreNewt::Body* body);

		// utility function to build a visual wire from shape for a collision
		void buildDebugObjectFromCollision(Ogre::ManualObject* object, Ogre::ColourValue colour, const OgreNewt::Collision& shape) const;

    protected:
        friend class OgreNewt::World;
        //! this function must only be used by an instance of the OgreNewt::World class
        Debugger(const OgreNewt::World* world);

        const OgreNewt::World*        m_world;
		Ogre::SceneManager*     m_sceneManager;
        Ogre::SceneNode*        m_debugnode;
        typedef std::map<int, Ogre::ColourValue> MaterialIdColorMap;
        MaterialIdColorMap      m_materialcolors;
        Ogre::ColourValue       m_defaultcolor;

        // raycast-debugging
        Ogre::SceneNode*        m_raycastsnode;
        bool                    m_recordraycasts;
        Ogre::ColourValue       m_raycol, m_convexcol, m_hitbodycol, m_prefilterdiscardedcol;
        bool                    m_markhitbodies;

        struct BodyDebugData
        {
            BodyDebugData() :
#ifdef OGRENEWT_NO_COLLISION_SHAREDPTR
                m_lastcol(NULL),
#endif
                m_node(NULL), m_lines(NULL), m_text(NULL), m_updated(false) {}
            CollisionPtr m_lastcol;
            Ogre::SceneNode* m_node;
            Ogre::ManualObject* m_lines;
            OgreNewt::OgreAddons::MovableText* m_text;
            int m_updated;
        };            
        typedef std::map<OgreNewt::Body*, BodyDebugData> BodyDebugDataMap;
        BodyDebugDataMap m_cachemap;

        //! create debug information for one body
        void processBody(Body* body);

		//! call the function to show debug information for this joint
		void processJoint(Joint* joint);

        //! clear debug data cache for bodies (m_cachemap)
        void clearBodyDebugDataCache();

        typedef std::list<Ogre::ManualObject*> ManualObjectList;
        ManualObjectList mRecordedRaycastObjects;


    private:
        //! this function is declared private, so nobody can use it!
        Debugger() {}

        //! this function is declared private, so nobody can use it!
        Debugger(const Debugger&) {}

        //! this function is declared private, so nobody can use it!
        const Debugger& operator=(const Debugger& d) { return d; } // actually this implementation must *never* be used!

        static void _CDECL newtonPerPoly( void* userData, int vertexCount, const float* faceVertec, int id );

	static void _CDECL newtonprocessJoints (const NewtonJoint* joint, void* userData);
    };

}   // end namespace OgreNewt


#endif  // _INCLUDE_OGRENEWT_DEBUGGER