package PrintGame;

/**
 * class representing an action
 */

public class Action
{
  public final static int MOVE_AHEAD = 1;
  public final static int MOVE_BACK  = 2;
  public final static int MOVE_LEFT  = 3;
  public final static int MOVE_RIGHT = 4;
  
  protected int cell_mark_;
  protected int state_;
  protected int moving_direction_;

//-----------------------------------------------------------------------------  
/**
 * Standard constructor
 * @param moving_direction relative direction
 * @param cell_mark 
 * @param new_area true if the robot explores area he hasn't seen before
 */  
  public Action(int state, int cell_mark, int moving_direction)
    throws IllegalArgumentException
  {
    if(moving_direction<1 || moving_direction>4)
     throw(new IllegalArgumentException(
       "invalid moving_direction. possible directions MOVE_AHEAD, " +
       "MOVE_BACK, MOVE_LEFT, MOVE_RIGHT "));
    
    if(cell_mark<-1 || cell_mark>3)
     throw(new IllegalArgumentException(
       "cell_mark must be >= -1 and <= 3"));
    
    moving_direction_= moving_direction;
    cell_mark_= cell_mark;
    state_= state;
  }
  
//-----------------------------------------------------------------------------   
/**
 * method sets the value of cell mark
 * @param cell_mark 0 if the cell is not marked
 * 1 if the cell is marked for the first time
 * 2 if the cell was marked before
 */  
  public void setCellMark(int cell_mark)
    throws IllegalArgumentException
  {
    if(cell_mark<-1 || cell_mark>3)
     throw(new IllegalArgumentException(
       "cell_mark must be >= -1 and <= 3"));
    
    cell_mark_= cell_mark;
  }
  
/**-----------------------------------------------------------------------------
 *
 */  
  public void setState(int state)
    throws IllegalArgumentException
  {
    if(state<0 || state>100)
     throw(new IllegalArgumentException(
       "state must be >= 0 and <= 100"));  
    state_ = state;
  }
  
//-----------------------------------------------------------------------------  
/**
 * method sets a relative direction used to move the robot.
 * @param moving_direction possible directions are ahead, back, left and rigth. 
 */
  public void setMovingDirection(int moving_direction)
    throws IllegalArgumentException
  {
    if(moving_direction<1 || moving_direction>4)
     throw(new IllegalArgumentException(
       "invalid moving_direction. possible directions MOVE_AHEAD, " +
       "MOVE_BACK, MOVE_LEFT, MOVE_RIGHT "));
    
    moving_direction_= moving_direction;
  }
  
//-----------------------------------------------------------------------------
/**
 * method returns a relative direction.
 */  
  public int getMovingDirection()
  {
    return moving_direction_;
  }
  
//-----------------------------------------------------------------------------
/**
 * method returns the value of the cell mark
 */  
  public int getCellMark()
  {
    return cell_mark_;
  }
  
//-----------------------------------------------------------------------------  
/**
 *
 */    
  public int GetState()
  {
    return state_;
  } 
  
}