Programming Forums > Application Development > Java

cwl157 · Jul 11th, 2008, 12:43 AM

I want to make a 2 player checkers game. I am starting in text but i want to add graphics later. I have 3 classes so far piece board and player. I represent the board with a 2d int array and i was thinking then that a red piece is a 3 and a black piece is a 4 and the empty spots that are movable are 1's and the other ones are 2. So then to add graphics i just go through the game board and draw whatever needs to be drawn based on if its a 1, 2, 3, or 4. I have the board set up and the pieces on the board. I am having trouble moving them around though. My player class gets an array of pieces. The color of these pieces depends on if the person is black or red. I need a move function that looks 1 diagnol from the current x and y and detects a collision or not. If no collision it would move the index in the piece array from the old position to the new one. I get an array index out of bounds. Basically i think i don't know which index of the pieces array i would pass it. Here is how i initially set the red pieces on the board.

 java Syntax (Toggle Plain Text) 
 
   // check for collision, if no collision set the piece
   static void setRedPieces(int xPos, int yPos, Board b)
   {
    // loop through row
    for (int row = 0; row < 3; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
         // loop through red pieces
         for (int i = 0; i < 12; i++)
         {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3;
         } // end for
      } // end for
    } // end for
   } // end setPiece
   // check for collision, if no collision set the piece
   static void setRedPieces(int xPos, int yPos, Board b)
   {
    // loop through row
    for (int row = 0; row < 3; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
         // loop through red pieces
         for (int i = 0; i < 12; i++)
         {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3;
         } // end for
      } // end for
    } // end for
   } // end setPiece

So can i assume that from 0,0 in the game board array is 0 in the pieces array and so on like that? If so i have my move method:

 java Syntax (Toggle Plain Text) 
 // move a red piece
   void moveRed(int pieceToMove, Board b)  
   {
       if (!checkCollision(pieces[pieceToMove].getXPos()+1, pieces[pieceToMove].getYPos()+1, b))
       {
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1;
        // gameBoard[yPos][xPos] = 3;
          b.getBoard()[pieces[pieceToMove].getYPos()+1][pieces[pieceToMove].getXPos()+1] = 3;
       } // end if
   } // end moveRed
 // move a red piece
   void moveRed(int pieceToMove, Board b)  
   {
       if (!checkCollision(pieces[pieceToMove].getXPos()+1, pieces[pieceToMove].getYPos()+1, b))
       {
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1;
        // gameBoard[yPos][xPos] = 3;
          b.getBoard()[pieces[pieceToMove].getYPos()+1][pieces[pieceToMove].getXPos()+1] = 3;
       } // end if
   } // end moveRed

I get an array index out of bounds exception around the check collision part. I pass it in 1 which should not be allowed to move because it should be the 2nd piece on the board if i am thinking through this correctly but i should not get the arrayIndexOutOfBounds exception. If i need to post more code i can. Thanks.

cwl157 · Jul 11th, 2008, 1:06 AM

it is saying the x and y positions of the pieces[pieceToMove] is 7 for some reason. It appears this gets added right in that method. I changed it to just place 1 red piece on the board at 0,0 and that works fine. But then the x and y values get changed to 7 and 7 also if i have a get method that gets the xPos and i say

(Toggle Plain Text)

pieces[pieceToMove].getXPos()+1 to take the current x position and see if the next 1 is available it sets it to 71 it just concatinates the 1 onto the end of the 7 and does not check for 1 + 7 which would be 8 but it should not even be 7 it should be 1 because the pieces[pieceToMove] x and y pos should be 0.  It should be the first piece.  I am just going to post my whole Player class where all this happens so you can see the whole thing.
[code = "java"]
import java.awt.*;
import javax.swing.*;

public class Player
{
   static Piece[] pieces = new Piece[12];
  // static Board b = new Board();
   String name;
   boolean isRed;
   // constructor,
   // tell if the person is black or red and make the correct array for them
   // put pieces on board
   public Player(String newName, String color, Board b)
   {
      name = newName;
      if (color.equalsIgnoreCase("red"))
      {
          // initialize the RedPiece array
          for (int i = 0; i < 12; i++)
          {
              pieces[i] = new Piece(Color.RED);
          } // end for
          //setRedPieces(0,0, b);
          System.out.println("inside constructor pieces[0].getXPos is " + pieces[0].getXPos());
          System.out.println("inside constructor pieces[0].getYPos is " + pieces[0].getYPos());
          setOneRedPiece(pieces[0].getXPos(),pieces[0].getYPos(), b);
      } // end if
      else if (color.equalsIgnoreCase("black"))
      {
          // initialize a black piece array
          for (int i = 0; i < 12; i++)
          {
              pieces[i] = new Piece(Color.BLACK);
          } // end for
          setBlackPieces(5, 0, b);
      } // end else if
   } // end PlayGame constructor
   
   // return true if there is a collision
   static boolean checkCollision(int xPos, int yPos, Board b)
   {
      // check if you are on an even row
      if (yPos %2 == 0)
      {
          // this means you are not on a gray square
          if (b.getBoard()[yPos][xPos] != 1)
             return true;
      } // end if
      // check if you are on an odd row
      else if (yPos %2 == 1)
      {
         // this means you are not on a gray square
         if (b.getBoard()[yPos][xPos] != 1)
            return true;
      } // end else if
       return false;
   } // end checkCollision
   /*
   // check for collision, if no collision set the piece
   static void setRedPieces(int xPos, int yPos, Board b)
   {
    // loop through red pieces
    for (int i = 0; i < 12; i++)
    {
    // loop through row
    for (int row = 0; row < 3; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3;
         } // end for
      } // end for
    } // end for
   } // end setPiece
    */
   // set one piece
   static void setOneRedPiece(int xPos, int yPos, Board b)
   {
        b.getBoard()[pieces[0].getYPos()][pieces[0].getXPos()] = 3;
   } // end setOneRedPiece
   
   // check for collision, if no collision set the piece
   static void setBlackPieces(int xPos, int yPos, Board b)
   {
    // loop through red pieces
    for (int i = 0; i < 12; i++)
    {
    // loop through row
    for (int row = 5; row < 8; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 4;
         } // end for
      } // end for
    } // end for
   } // end setPiece
   /*
   // try to move, move back if you can't
   boolean tryToMove(int pieceToMove, Board b)
   {
      pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1);
      pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1);
      if (checkCollision(pieces[pieceToMove].getXPos(), pieces[pieceToMove].getYPos(), b))
      {
         pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()-1);
         pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()-1);
         return false;
      } // end if
      return true;
   } // end tryToMove
    **/

   // move a red piece
   void moveRed(int pieceToMove, Board b)  
   {
       System.out.println("the piece to move is " + pieceToMove);
       System.out.println("the x pos of pieces[pieceToMove] is " + pieces[pieceToMove].xPos+1);
       System.out.println("the Y pos of pieces[pieceToMove] is " + pieces[pieceToMove].yPos+1);
       if (!checkCollision(pieces[pieceToMove].xPos+1, pieces[pieceToMove].getYPos()+1, b))
       {
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1;
        // gameBoard[yPos][xPos] = 3;
          pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1);
          pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1);
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 3;
       } // end if
   } // end moveRed

   // move a black piece
   void moveBlack(int pieceToMove, Board b) 
   {
       b.getBoard()[pieces[pieceToMove].getYPos()-1][pieces[pieceToMove].getXPos()-1] = 1;
      // gameBoard[yPos][xPos] = 3;
        b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 4;
   } // end moveBlack
   
} // end class Player

pieces[pieceToMove].getXPos()+1 to take the current x position and see if the next 1 is available it sets it to 71 it just concatinates the 1 onto the end of the 7 and does not check for 1 + 7 which would be 8 but it should not even be 7 it should be 1 because the pieces[pieceToMove] x and y pos should be 0.  It should be the first piece.  I am just going to post my whole Player class where all this happens so you can see the whole thing.
[code = "java"]
import java.awt.*;
import javax.swing.*;

public class Player
{
   static Piece[] pieces = new Piece[12];
  // static Board b = new Board();
   String name;
   boolean isRed;
   // constructor,
   // tell if the person is black or red and make the correct array for them
   // put pieces on board
   public Player(String newName, String color, Board b)
   {
      name = newName;
      if (color.equalsIgnoreCase("red"))
      {
          // initialize the RedPiece array
          for (int i = 0; i < 12; i++)
          {
              pieces[i] = new Piece(Color.RED);
          } // end for
          //setRedPieces(0,0, b);
          System.out.println("inside constructor pieces[0].getXPos is " + pieces[0].getXPos());
          System.out.println("inside constructor pieces[0].getYPos is " + pieces[0].getYPos());
          setOneRedPiece(pieces[0].getXPos(),pieces[0].getYPos(), b);
      } // end if
      else if (color.equalsIgnoreCase("black"))
      {
          // initialize a black piece array
          for (int i = 0; i < 12; i++)
          {
              pieces[i] = new Piece(Color.BLACK);
          } // end for
          setBlackPieces(5, 0, b);
      } // end else if
   } // end PlayGame constructor
   
   // return true if there is a collision
   static boolean checkCollision(int xPos, int yPos, Board b)
   {
      // check if you are on an even row
      if (yPos %2 == 0)
      {
          // this means you are not on a gray square
          if (b.getBoard()[yPos][xPos] != 1)
             return true;
      } // end if
      // check if you are on an odd row
      else if (yPos %2 == 1)
      {
         // this means you are not on a gray square
         if (b.getBoard()[yPos][xPos] != 1)
            return true;
      } // end else if
       return false;
   } // end checkCollision
   /*
   // check for collision, if no collision set the piece
   static void setRedPieces(int xPos, int yPos, Board b)
   {
    // loop through red pieces
    for (int i = 0; i < 12; i++)
    {
    // loop through row
    for (int row = 0; row < 3; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3;
         } // end for
      } // end for
    } // end for
   } // end setPiece
    */
   // set one piece
   static void setOneRedPiece(int xPos, int yPos, Board b)
   {
        b.getBoard()[pieces[0].getYPos()][pieces[0].getXPos()] = 3;
   } // end setOneRedPiece
   
   // check for collision, if no collision set the piece
   static void setBlackPieces(int xPos, int yPos, Board b)
   {
    // loop through red pieces
    for (int i = 0; i < 12; i++)
    {
    // loop through row
    for (int row = 5; row < 8; row++)
    {
      // loop through col
      for (int col = 0; col < 8; col++)
      {
            pieces[i].setXPos(col);
            pieces[i].setYPos(row);
            if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b))
               b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 4;
         } // end for
      } // end for
    } // end for
   } // end setPiece
   /*
   // try to move, move back if you can't
   boolean tryToMove(int pieceToMove, Board b)
   {
      pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1);
      pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1);
      if (checkCollision(pieces[pieceToMove].getXPos(), pieces[pieceToMove].getYPos(), b))
      {
         pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()-1);
         pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()-1);
         return false;
      } // end if
      return true;
   } // end tryToMove
    **/

   // move a red piece
   void moveRed(int pieceToMove, Board b)  
   {
       System.out.println("the piece to move is " + pieceToMove);
       System.out.println("the x pos of pieces[pieceToMove] is " + pieces[pieceToMove].xPos+1);
       System.out.println("the Y pos of pieces[pieceToMove] is " + pieces[pieceToMove].yPos+1);
       if (!checkCollision(pieces[pieceToMove].xPos+1, pieces[pieceToMove].getYPos()+1, b))
       {
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1;
        // gameBoard[yPos][xPos] = 3;
          pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1);
          pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1);
          b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 3;
       } // end if
   } // end moveRed

   // move a black piece
   void moveBlack(int pieceToMove, Board b) 
   {
       b.getBoard()[pieces[pieceToMove].getYPos()-1][pieces[pieceToMove].getXPos()-1] = 1;
      // gameBoard[yPos][xPos] = 3;
        b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 4;
   } // end moveBlack
   
} // end class Player

Jul 11th, 2008, 12:43 AM	#1
cwl157 Professional Programmer Join Date: Feb 2005 Posts: 333 Rep Power: 4	checkers game I want to make a 2 player checkers game. I am starting in text but i want to add graphics later. I have 3 classes so far piece board and player. I represent the board with a 2d int array and i was thinking then that a red piece is a 3 and a black piece is a 4 and the empty spots that are movable are 1's and the other ones are 2. So then to add graphics i just go through the game board and draw whatever needs to be drawn based on if its a 1, 2, 3, or 4. I have the board set up and the pieces on the board. I am having trouble moving them around though. My player class gets an array of pieces. The color of these pieces depends on if the person is black or red. I need a move function that looks 1 diagnol from the current x and y and detects a collision or not. If no collision it would move the index in the piece array from the old position to the new one. I get an array index out of bounds. Basically i think i don't know which index of the pieces array i would pass it. Here is how i initially set the red pieces on the board. java Syntax (Toggle Plain Text) // check for collision, if no collision set the piece static void setRedPieces(int xPos, int yPos, Board b) { // loop through row for (int row = 0; row < 3; row++) { // loop through col for (int col = 0; col < 8; col++) { // loop through red pieces for (int i = 0; i < 12; i++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3; } // end for } // end for } // end for } // end setPiece // check for collision, if no collision set the piece static void setRedPieces(int xPos, int yPos, Board b) { // loop through row for (int row = 0; row < 3; row++) { // loop through col for (int col = 0; col < 8; col++) { // loop through red pieces for (int i = 0; i < 12; i++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3; } // end for } // end for } // end for } // end setPiece So can i assume that from 0,0 in the game board array is 0 in the pieces array and so on like that? If so i have my move method: java Syntax (Toggle Plain Text) // move a red piece void moveRed(int pieceToMove, Board b) { if (!checkCollision(pieces[pieceToMove].getXPos()+1, pieces[pieceToMove].getYPos()+1, b)) { b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1; // gameBoard[yPos][xPos] = 3; b.getBoard()[pieces[pieceToMove].getYPos()+1][pieces[pieceToMove].getXPos()+1] = 3; } // end if } // end moveRed // move a red piece void moveRed(int pieceToMove, Board b) { if (!checkCollision(pieces[pieceToMove].getXPos()+1, pieces[pieceToMove].getYPos()+1, b)) { b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1; // gameBoard[yPos][xPos] = 3; b.getBoard()[pieces[pieceToMove].getYPos()+1][pieces[pieceToMove].getXPos()+1] = 3; } // end if } // end moveRed I get an array index out of bounds exception around the check collision part. I pass it in 1 which should not be allowed to move because it should be the 2nd piece on the board if i am thinking through this correctly but i should not get the arrayIndexOutOfBounds exception. If i need to post more code i can. Thanks.

Jul 11th, 2008, 1:06 AM	#2
cwl157 Professional Programmer Join Date: Feb 2005 Posts: 333 Rep Power: 4	Re: checkers game it is saying the x and y positions of the pieces[pieceToMove] is 7 for some reason. It appears this gets added right in that method. I changed it to just place 1 red piece on the board at 0,0 and that works fine. But then the x and y values get changed to 7 and 7 also if i have a get method that gets the xPos and i say (Toggle Plain Text) pieces[pieceToMove].getXPos()+1 to take the current x position and see if the next 1 is available it sets it to 71 it just concatinates the 1 onto the end of the 7 and does not check for 1 + 7 which would be 8 but it should not even be 7 it should be 1 because the pieces[pieceToMove] x and y pos should be 0. It should be the first piece. I am just going to post my whole Player class where all this happens so you can see the whole thing. [code = "java"] import java.awt.; import javax.swing.; public class Player { static Piece[] pieces = new Piece[12]; // static Board b = new Board(); String name; boolean isRed; // constructor, // tell if the person is black or red and make the correct array for them // put pieces on board public Player(String newName, String color, Board b) { name = newName; if (color.equalsIgnoreCase("red")) { // initialize the RedPiece array for (int i = 0; i < 12; i++) { pieces[i] = new Piece(Color.RED); } // end for //setRedPieces(0,0, b); System.out.println("inside constructor pieces[0].getXPos is " + pieces[0].getXPos()); System.out.println("inside constructor pieces[0].getYPos is " + pieces[0].getYPos()); setOneRedPiece(pieces[0].getXPos(),pieces[0].getYPos(), b); } // end if else if (color.equalsIgnoreCase("black")) { // initialize a black piece array for (int i = 0; i < 12; i++) { pieces[i] = new Piece(Color.BLACK); } // end for setBlackPieces(5, 0, b); } // end else if } // end PlayGame constructor // return true if there is a collision static boolean checkCollision(int xPos, int yPos, Board b) { // check if you are on an even row if (yPos %2 == 0) { // this means you are not on a gray square if (b.getBoard()[yPos][xPos] != 1) return true; } // end if // check if you are on an odd row else if (yPos %2 == 1) { // this means you are not on a gray square if (b.getBoard()[yPos][xPos] != 1) return true; } // end else if return false; } // end checkCollision /* // check for collision, if no collision set the piece static void setRedPieces(int xPos, int yPos, Board b) { // loop through red pieces for (int i = 0; i < 12; i++) { // loop through row for (int row = 0; row < 3; row++) { // loop through col for (int col = 0; col < 8; col++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3; } // end for } // end for } // end for } // end setPiece / // set one piece static void setOneRedPiece(int xPos, int yPos, Board b) { b.getBoard()[pieces[0].getYPos()][pieces[0].getXPos()] = 3; } // end setOneRedPiece // check for collision, if no collision set the piece static void setBlackPieces(int xPos, int yPos, Board b) { // loop through red pieces for (int i = 0; i < 12; i++) { // loop through row for (int row = 5; row < 8; row++) { // loop through col for (int col = 0; col < 8; col++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 4; } // end for } // end for } // end for } // end setPiece / // try to move, move back if you can't boolean tryToMove(int pieceToMove, Board b) { pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1); pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1); if (checkCollision(pieces[pieceToMove].getXPos(), pieces[pieceToMove].getYPos(), b)) { pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()-1); pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()-1); return false; } // end if return true; } // end tryToMove */ // move a red piece void moveRed(int pieceToMove, Board b) { System.out.println("the piece to move is " + pieceToMove); System.out.println("the x pos of pieces[pieceToMove] is " + pieces[pieceToMove].xPos+1); System.out.println("the Y pos of pieces[pieceToMove] is " + pieces[pieceToMove].yPos+1); if (!checkCollision(pieces[pieceToMove].xPos+1, pieces[pieceToMove].getYPos()+1, b)) { b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1; // gameBoard[yPos][xPos] = 3; pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1); pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1); b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 3; } // end if } // end moveRed // move a black piece void moveBlack(int pieceToMove, Board b) { b.getBoard()[pieces[pieceToMove].getYPos()-1][pieces[pieceToMove].getXPos()-1] = 1; // gameBoard[yPos][xPos] = 3; b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 4; } // end moveBlack } // end class Player pieces[pieceToMove].getXPos()+1 to take the current x position and see if the next 1 is available it sets it to 71 it just concatinates the 1 onto the end of the 7 and does not check for 1 + 7 which would be 8 but it should not even be 7 it should be 1 because the pieces[pieceToMove] x and y pos should be 0. It should be the first piece. I am just going to post my whole Player class where all this happens so you can see the whole thing. [code = "java"] import java.awt.; import javax.swing.; public class Player { static Piece[] pieces = new Piece[12]; // static Board b = new Board(); String name; boolean isRed; // constructor, // tell if the person is black or red and make the correct array for them // put pieces on board public Player(String newName, String color, Board b) { name = newName; if (color.equalsIgnoreCase("red")) { // initialize the RedPiece array for (int i = 0; i < 12; i++) { pieces[i] = new Piece(Color.RED); } // end for //setRedPieces(0,0, b); System.out.println("inside constructor pieces[0].getXPos is " + pieces[0].getXPos()); System.out.println("inside constructor pieces[0].getYPos is " + pieces[0].getYPos()); setOneRedPiece(pieces[0].getXPos(),pieces[0].getYPos(), b); } // end if else if (color.equalsIgnoreCase("black")) { // initialize a black piece array for (int i = 0; i < 12; i++) { pieces[i] = new Piece(Color.BLACK); } // end for setBlackPieces(5, 0, b); } // end else if } // end PlayGame constructor // return true if there is a collision static boolean checkCollision(int xPos, int yPos, Board b) { // check if you are on an even row if (yPos %2 == 0) { // this means you are not on a gray square if (b.getBoard()[yPos][xPos] != 1) return true; } // end if // check if you are on an odd row else if (yPos %2 == 1) { // this means you are not on a gray square if (b.getBoard()[yPos][xPos] != 1) return true; } // end else if return false; } // end checkCollision / // check for collision, if no collision set the piece static void setRedPieces(int xPos, int yPos, Board b) { // loop through red pieces for (int i = 0; i < 12; i++) { // loop through row for (int row = 0; row < 3; row++) { // loop through col for (int col = 0; col < 8; col++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 3; } // end for } // end for } // end for } // end setPiece / // set one piece static void setOneRedPiece(int xPos, int yPos, Board b) { b.getBoard()[pieces[0].getYPos()][pieces[0].getXPos()] = 3; } // end setOneRedPiece // check for collision, if no collision set the piece static void setBlackPieces(int xPos, int yPos, Board b) { // loop through red pieces for (int i = 0; i < 12; i++) { // loop through row for (int row = 5; row < 8; row++) { // loop through col for (int col = 0; col < 8; col++) { pieces[i].setXPos(col); pieces[i].setYPos(row); if (!checkCollision(pieces[i].getXPos(), pieces[i].getYPos(), b)) b.getBoard()[pieces[i].getYPos()][pieces[i].getXPos()] = 4; } // end for } // end for } // end for } // end setPiece / // try to move, move back if you can't boolean tryToMove(int pieceToMove, Board b) { pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1); pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1); if (checkCollision(pieces[pieceToMove].getXPos(), pieces[pieceToMove].getYPos(), b)) { pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()-1); pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()-1); return false; } // end if return true; } // end tryToMove **/ // move a red piece void moveRed(int pieceToMove, Board b) { System.out.println("the piece to move is " + pieceToMove); System.out.println("the x pos of pieces[pieceToMove] is " + pieces[pieceToMove].xPos+1); System.out.println("the Y pos of pieces[pieceToMove] is " + pieces[pieceToMove].yPos+1); if (!checkCollision(pieces[pieceToMove].xPos+1, pieces[pieceToMove].getYPos()+1, b)) { b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 1; // gameBoard[yPos][xPos] = 3; pieces[pieceToMove].setYPos(pieces[pieceToMove].getYPos()+1); pieces[pieceToMove].setXPos(pieces[pieceToMove].getXPos()+1); b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 3; } // end if } // end moveRed // move a black piece void moveBlack(int pieceToMove, Board b) { b.getBoard()[pieces[pieceToMove].getYPos()-1][pieces[pieceToMove].getXPos()-1] = 1; // gameBoard[yPos][xPos] = 3; b.getBoard()[pieces[pieceToMove].getYPos()][pieces[pieceToMove].getXPos()] = 4; } // end moveBlack } // end class Player

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