import java.util.*;
   /**
     * This class generates all legal moves.
     * There are two fields, moves and jumps.
     * moves is a LinkedList of elements of type aMove.
     * jumps is a LinkedList of elements of type LinkedLists of Integers
     * (the representation for jump).
     * If there is at least one jump, then the jump must be taken.
     * Therefore, if there is at least one jump, then move = null.
     * If there are no legal jumps, then jump = null.
     */

public class Mover{
 
    public LinkedList moves;
    public LinkedList jumps;

    /**
     * Both moves and jumps are set to null.
     */
    Mover(){
	moves = new LinkedList();
	jumps = new LinkedList();
	moves = null;
	jumps = null;
    }
    /**
     * Returns moves.
     */
      
	public LinkedList Moves(){
	    return moves;
	}
    /**
     * Returns jumps
     */
	public LinkedList Jumps(){
	    return jumps;
	}
    /**
     * Given a CheckerBoard and a player 
     *(indicated by either 'p'. 'P', 'o', or 'O'), 
     * sets moves to be all legal moves and 
     * jumps to be all legal jumps.
     * Note the comment at the beginning of this classes documentation.
     */

	public void GetMoves(CheckerBoard b, char player){
	    jumps = Jump.GetJumps(b,player);
	    //  if (jumps.size()==0){
	if(jumps==null){
	    //jumps = null;
	    
		moves = aMove.GetMoves(b,player);
	    }
	    else{ 
		if(jumps.size()!=0) {moves = null;}
		else {jumps =null;
		moves = aMove.GetMoves(b,player);}}

	}
    /**
     * Given a CheckerBoard and a position on the board,
     * sets moves to be all legal moves and 
     * jumps to be all legal jumps.
     * Note the comment at the beginning of this classes documentation.
     */
	public void GetMoves(CheckerBoard b, int pos){
	    jumps = Jump.GetJumps(b,pos);
	    if (jumps == null){
		moves = aMove.GetMoves(b,pos);
	    }
	    else{
		if(jumps.size()!=0){ 
		   	moves  = null;
		
	    }
	    else{moves = aMove.GetMoves(b,pos);}
	    }
	}


}