movementBasedTerrainPreloadController.h

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/*******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/



#pragma once

#include "vrfmodel/vrfmodelDefines.h"
#include "vrfobjcore/controllerComponent.h"
#include "vrfobjcore/vrfObjectTerrainPreloadManager.h"

#include "features/featureSet.h"
#include "features/areaFeature.h"

class DtMovementBasedTerrainPreloadControllerDescriptor;

class DT_DLL_vrfmodel DtMovementBasedTerrainPreloadController : 
   public DtControllerComponent
{

private:

   DtMovementBasedTerrainPreloadController();
   DtMovementBasedTerrainPreloadController(
      const DtMovementBasedTerrainPreloadController& orig);
   DtMovementBasedTerrainPreloadController& operator=(
      const DtMovementBasedTerrainPreloadController& orig);

public:

   DtMovementBasedTerrainPreloadController(const DtString& name, 
      DtVrfObject* owner, 
      DtSimManager* simManager, 
      DtComponentDescriptor* desc = 0,
      DtReaderWriterRegistry* parentRegistry = 0);

   virtual ~DtMovementBasedTerrainPreloadController();

   virtual bool init();

   virtual const char* type() const;

   static void calculateTerrainPreLoadCallback(
      DtVrfObjectTerrainPreloadArgs& args, void* usr);
   
   virtual void calculateTerrainPreLoad(DtVrfObjectTerrainPreloadArgs& args);

   static DtSimComponent * creator(const DtString& name, 
      DtVrfObject* owner,
      DtSimManager* simManager, 
      DtComponentDescriptor* desc = 0,
      DtReaderWriterRegistry* parentRegistry = 0);

protected:
   const DtMovementBasedTerrainPreloadControllerDescriptor* myDescriptor;

   std::auto_ptr<MAKVRinTerra::DtAreaFeatureSet> myLOSFeatures;

   DtPoint myLastPosition;
   double myLastSpeed;
   double myLastLookaheadRadius;
};