D:/Development/Projects/X-Clone/X-Clone/trunk/Unit.h

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#ifndef XCLONE_UNIT_H
#define XCLONE_UNIT_H

#include "includes.h"

class Unit;
typedef boost::shared_ptr<Unit> spUnit;
typedef boost::weak_ptr<Unit> wpUnit;

#include "GameEntity.h"
#include "MapTile.h"

class Unit : public GameEntity
{
   public:
      static spUnit makeUnit(int playerID);
      static spUnit makeUnit(int playerID, spMapTile);
      virtual ~Unit();

      int getPlayerID() const;
      int getX() const;
      int getY() const;

      void draw(Point offset, Point dimensions) const;

      bool isPassable() const;
 
      void wait();

      void move( Direction dir );
      void move( spMapTile tile );

      void moveAlongPath( bool teleport = false );

      map<spMapTile, int> getPossibleMoves();
      void updatePossibleMoves();
      bool canMoveInDirection(Direction dir);

      void computeMovePath(spMapTile dest);
      void drawMovePath(Point offset) const;
      bool hasMovePath() const;
      void clearMovePath();
      const spMapTile getDestination() const;

      bool hasMaxActionPoints() const;
      void regenActionPoints();

      bool hasTurnBefore(spUnit u) const;
     
      void markActive();
      static void clearActive();

      void markSelected();
      static void clearSelected();

      static spUnit getSelectedUnit();

   private:
      Unit(int playerID, spMapTile tile);

      bool canMoveInDirection(spMapTile tile, Direction dir, int points);
      pair<spMapTile, int> computeMovePathHelper(spMapTile current);

      wpUnit _weak;

      map<spMapTile, int> _possibleMoves;
      list<pair<spMapTile, int> > _movementPath;
      int _actionPoints;
      int _regenRate;
      int _playerID;
      spMapTile _tile;

      static spUnit _activeUnit;
      static spUnit _selectedUnit;

      static SDL_Surface* _image;
      static SDL_Surface* _pathImage;
      static SDL_Surface* _pathEndImage;
      static SDL_Surface* _selectedImage;
      static SDL_Surface* _activeImage;

      static int _maxActionPoints;
};

#endif

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