footstep_planner_environment.h

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//=================================================================================================
// Copyright (c) 2017, Alexander Stumpf, TU Darmstadt
// Based on http://wiki.ros.org/footstep_planner by Johannes Garimort and Armin Hornung
// All rights reserved.

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#ifndef VIGIR_FOOTSTEP_PLANNING_FOOTSTEP_PLANNER_ENVIRONMENT_H__
#define VIGIR_FOOTSTEP_PLANNING_FOOTSTEP_PLANNER_ENVIRONMENT_H__

#include <math.h>

#include <vector>

#include <boost/function.hpp>

#include <sbpl/headers.h>

#include <vigir_pluginlib/plugin_manager.h>

#include <vigir_foot_pose_transformer/foot_pose_transformer.h>

#include <vigir_footstep_planning_lib/helper.h>

#include <vigir_footstep_planning_plugins/plugin_aggregators/world_model.h>
#include <vigir_footstep_planning_plugins/plugin_aggregators/step_cost_estimator.h>
#include <vigir_footstep_planning_plugins/plugin_aggregators/heuristic.h>

#include <vigir_footstep_planner/environment_parameters.h>
#include <vigir_footstep_planner/state_space/state_space.h>



namespace vigir_footstep_planning
{
class FootstepPlannerEnvironment
  : public DiscreteSpaceInformation
{
public:
  FootstepPlannerEnvironment(const EnvironmentParameters& params, const FootPoseTransformer& foot_pose_transformer, boost::function<void (msgs::PlanningFeedback)>& feedback_cb);

  virtual ~FootstepPlannerEnvironment();

  void setFrameId(const std::string& frame_id);

  const StateSpace::Ptr& getStateSpace() { return state_space; }

  int getNumExpandedStates() { return ivNumExpandedStates; }

  void reset();

  void stateExpanded(const PlanningState& s);
  void stateVisited(const PlanningState& s);

  exp_states_2d_iter_t getExpandedStatesStart()
  {
    return ivExpandedStates.begin();
  }

  exp_states_2d_iter_t getExpandedStatesEnd()
  {
    return ivExpandedStates.end();
  }

  int GetFromToHeuristic(int FromStateID, int ToStateID);

  int GetGoalHeuristic(int stateID);

  int GetStartHeuristic(int stateID);

  void GetSuccs(int SourceStateID, std::vector<int> *SuccIDV, std::vector<int> *CostV);

  void GetPreds(int TargetStateID, std::vector<int> *PredIDV, std::vector<int> *CostV);

  virtual void GetRandomSuccsatDistance(int SourceStateID,
                                        std::vector<int>* SuccIDV,
                                        std::vector<int>* CLowV);

  virtual void GetRandomPredsatDistance(int TargetStateID,
                                        std::vector<int>* PredIDV,
                                        std::vector<int>* CLowV);

  bool AreEquivalent(int StateID1, int StateID2);

  bool InitializeEnv(const char *sEnvFile);

  bool InitializeMDPCfg(MDPConfig *MDPCfg);

  void PrintEnv_Config(FILE *fOut);

  void PrintState(int stateID, bool bVerbose, FILE *fOut);

  void SetAllActionsandAllOutcomes(CMDPSTATE *state);

  void SetAllPreds(CMDPSTATE *state);

  int SizeofCreatedEnv();

  void updateHeuristicValues();

protected:
  int GetFromToHeuristic(const PlanningState& from, const PlanningState& to, const PlanningState& start, const PlanningState& goal);

  struct less
  {
    bool operator()(const PlanningState* a, const PlanningState* b) const;
  };

  StateSpace::Ptr state_space;

  // local instance of foot pose transformer
  const FootPoseTransformer& foot_pose_transformer;

  // feedback callback
  boost::function<void (msgs::PlanningFeedback)>& feedback_cb;

  const EnvironmentParameters& params;

  exp_states_2d_t ivExpandedStates;
  size_t ivNumExpandedStates;

  std::string frame_id;
  std::vector<msgs::Step> visited_steps;
  ros::Time last_feedback_flush;
};
}

#endif