I have to create an undo and redo function in a connect four game utilizing doub
ID: 645004 • Letter: I
Question
I have to create an undo and redo function in a connect four game utilizing doubly linked lists. Right now I'm working on storing the board into my struct and doing a previous function. This is what I have but keep getting the error (Array type 'char **[6][7]' is not assignable) at tail->move=board;
This is my code:
typedef struct cell *LIST;
struct cell {
char **move[6][7];
LIST prev;
LIST next;
};
bool NewMove (char board)
{
LIST tail;
tail->move=board;
LIST temp=new cell;
tail->next=temp;
temp->prev=tail;
tail=tail->next;
temp->next=NULL;
return true;
}
Explanation / Answer
Program:
import javax.swing.JOptionPane;
public class ConnectFourGame {
private int[][] board;
//private GameStatus status;;
private int player, bSize;
public ConnectFourGame () {
//status = GameStatus.InProgress;
Object[] possibilities = {"4", "5", "6", "7", "8", "9", "10",
"11", "12", "13", "14", "15", "16", "17", "18", "19"};
String s = (String)JOptionPane.showInputDialog(null,
"Choose Board Size:", "Sizes", JOptionPane.PLAIN_MESSAGE,
null, possibilities, "10");
if(s == null || (s != null && ("".equals(s)))){
s = "10";
}
bSize = Integer.parseInt(s);
Object[] playerSelect = {"1", "2"};
String s2 = (String)JOptionPane.showInputDialog(null,
"Choose Player to Start", "Start", JOptionPane.PLAIN_MESSAGE,
null, playerSelect, "1");
if(s2 == null || (s2 != null && ("".equals(s)))){
s2 = "1";
}
player = Integer.parseInt(s2);
board = new int[bSize][bSize];
reset();
}
public int getSize(){
return bSize;
}
public void reset(){
for (int r = 0; r < bSize; r++)
for (int c = 0; c < bSize; c++)
board[r][c] = -1;
}
public int selectCol (int pCol) {
for (int r = bSize - 1; r >= 0; r--)
if (board[r][pCol] == -1){
board[r][pCol] = player;
return r;
}
return -1;
}
public int nextPlayer() {
if (player == 1)
player = 2;
else
player = 1;
return player;
}
public int getCurrentPlayer () {
return player;
}
public GameStatus isWinner() {
int count = 0;
for (int r = 0; r < bSize; r++)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 1) && (board[r][c + 1] == 1) &&
(board[r][c + 2] == 1) && (board[r][c + 3] == 1)){
return GameStatus.Player1WON;
}
for (int r = 0; r < bSize; r++)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 2) && (board[r][c + 1] == 2) &&
(board[r][c + 2] == 2) && (board[r][c + 3] == 2)){
return GameStatus.Player2WON;
}
for (int c = 0; c < bSize; c++)
for (int r = 0; r < (bSize - 3); r++)
if ((board[r][c] == 1) && (board[r + 1][c] == 1) &&
(board[r + 2][c] == 1) && (board[r + 3][c] == 1)){
return GameStatus.Player1WON;
}
for (int c = 0; c < bSize; c++)
for (int r = 0; r < (bSize - 3); r++)
if ((board[r][c] == 2) && (board[r + 1][c] == 2) &&
(board[r + 2][c] == 2) && (board[r + 3][c] == 2)){
return GameStatus.Player2WON;
}
for (int r = 0; r < bSize - 3; r++)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 1) && (board[r+1][c + 1] == 1) &&
(board[r+2][c + 2] == 1) && (board[r+3][c + 3] == 1)){
return GameStatus.Player1WON;
}
for (int r = bSize - 1; r >= 3; r--)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 1) && (board[r-1][c + 1] == 1) &&
(board[r-2][c + 2] == 1) && (board[r-3][c + 3] == 1)){
return GameStatus.Player1WON;
}
for (int r = 0; r < bSize - 3; r++)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 2) && (board[r+1][c + 1] == 2) &&
(board[r+2][c + 2] == 2) && (board[r+3][c + 3] == 2)){
return GameStatus.Player2WON;
}
for (int r = bSize - 1; r >= 3; r--)
for (int c = 0; c < bSize - 3; c++)
if ((board[r][c] == 2) && (board[r-1][c + 1] == 2) &&
(board[r-2][c + 2] == 2) && (board[r-3][c + 3] == 2)){
return GameStatus.Player2WON;
}
for (int r = 0; r < bSize; r++)
for (int c = 0; c < bSize; c++)
if(board[r][c] != -1)
count ++;
if(count == (bSize)*(bSize))
return GameStatus.Cats;
return GameStatus.InProgress;
}
public int [][] getBoard() {
return board;
}
public void undo(){
}
}