/*!
 * @file terrain.h
  *  Defines and handles the terrain of the World

    @todo implement it

    The terrain should either be build from a Model a OBJModel or from a HeightMap.
*/

#ifndef _TERRAIN_H
#define _TERRAIN_H

#include "world_entity.h"
#include  <ode/ode.h>

// FORWARD DECLARATION
class SpatialSeparation;
class HeightMap;
class Material;

//! A simple method to call a desired debug world.
enum DebugTerrain {TERRAIN_DAVE, TERRAIN_BENSCH};


//! A Class to handle Terrain of orxonox
class Terrain : public WorldEntity
{
  ObjectListDeclaration(Terrain);
 
 public:
  Terrain(const TiXmlElement* root = NULL);
  Terrain(const std::string& fileName);
  Terrain(DebugTerrain debugTerrain);
  virtual ~Terrain();

  void go();
  void checkCollisionTerrain(WorldEntity* worldEntity); /*!< WorldEntities use this function to check wheter they collided with the BspEntity.
                                                      If a collision has been detected, the collides-function of worldEntity will be called.*/

  void init();
  virtual void loadParams(const TiXmlElement* root);

  void loadVegetation(const std::string& vegetationFile);

  void loadHeightMap(const std::string& heightMapFile, const std::string& colorMap);
  void loadTexture(const std::string& textureName);
  void setScale(float x, float y, float z);

  void buildDebugTerrain(DebugTerrain debugTerrain);

  float getHeight(float x, float y);
  virtual void draw() const;

  public:
    SpatialSeparation* ssp;

 private:
   Model*              vegetation;
   int                 modelList;
   bool loaded;
   HeightMap*          heightMap;
   Material*           heightMapMaterial;
   Vector              terrainScale;
   unsigned int*       Ind;

   dTriMeshDataID   ODE_Geometry; //!< ODE Geometry Data of the static model
   dGeomID          ODE_Geom_ID; //!< ID of ODE Geometry Data
   dWorldID world;
   dSpaceID space;
   dJointGroupID contactgroup;
   dContact contact[300];
};

#endif /* _TERRAIN_H */