random_racer/src/VRSTerrainLoader.h

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#ifndef _RR_VRSTERRAINLOADER_H_
#define _RR_VRSTERRAINLOADER_H_

#include <vrs/container/dataiterator.h>
#include <vrs/color.h>

#include <random_utils/ThreadSafeObject.h>

#include "TerrainLoader.h"

namespace VRS
{
class PolygonSet;
class Translation;
class Mesh;
} // namespace VRS

struct SDL_cond;
struct SDL_mutex;
struct SDL_Thread;


namespace random_racer
{

class ControlPointContainer;
class MeshBeautifier;
class ODETerrainLoader;

class VRSTerrainLoader : public TerrainLoader,
                         private random_utils::ThreadSafeObject
{
    friend class ODETerrainLoader;

    // the thread related stuff
    SDL_Thread* m_worker;

    SDL_mutex*  m_controlMutex;
    SDL_mutex*  m_generateWakeMutex;
    SDL_mutex*  m_vertexMutex;

    SDL_cond*   m_replaceWakeCond;
    SDL_cond*   m_generateWakeCond;

    int         m_signalWhenDoneWith;
    bool        m_workerIsWaiting;

    bool        m_terminateWorker;

    VRS::SO<TerrainGenerator> m_generator;

    struct TerrainPart
    {
        double x, y;

        bool isDone;

        std::vector<VRS::Vector> points;
    };

    TerrainPart m_terrainCache[4];

    VRS::SO<VRS::Translation>                   m_translation;
    VRS::SO<VRS::Mesh>                          m_mesh;
    VRS::SO<VRS::DataIterator<VRS::Vector> >    m_vertexIter, m_textureIter;
    VRS::SO<VRS::DataIterator<VRS::Color> >     m_colorIter;

    VRS::SO<MeshBeautifier>                     m_beautifier;

    static int workerWrapper(void* self);

    int generate();

public:
    VRSTerrainLoader(
        VRS::SO<VRS::SceneThing> thing,
        VRS::SO<ControlPointContainer> container,
        double boxSize,
        double viewSize);

    virtual ~VRSTerrainLoader();

    virtual void replaceTerrain(
        const VRS::Vector& position, const VRS::Vector& center);

    void beautifyMesh();

    VRS::SO<VRS::Mesh> mesh();

    VRS::Vector heightAt(double, double);

    void terminate();
};

} // namespace random_racer


#endif // _RR_VRSTERRAINLOADER_H_

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