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checkers_2player.c
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checkers_2player.c
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#include <stdio.h>
#include <stdlib.h>
#define SIZE 8
void initializeBoard(char board[SIZE][SIZE]);
void printBoard(char board[SIZE][SIZE]);
int isValidMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol);
int isCaptureMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol);
int performMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol);
int isGameOver(char board[SIZE][SIZE]);
int main() {
char board[SIZE][SIZE];
int player = 1;
initializeBoard(board);
while (!isGameOver(board)) {
printf("\nCurrent Board:\n");
printBoard(board);
int startRow, startCol, endRow, endCol;
printf("\nPlayer %d's turn:\n", player);
printf("Enter the starting position (row col): ");
scanf("%d %d", &startRow, &startCol);
printf("Enter the ending position (row col): ");
scanf("%d %d", &endRow, &endCol);
if (isValidMove(board, player, startRow, startCol, endRow, endCol)) {
performMove(board, player, startRow, startCol, endRow, endCol);
player = (player == 1) ? 2 : 1;
} else {
printf("Invalid move. Try again.\n");
}
}
printf("\nGame over!\n");
printBoard(board);
return 0;
}
void initializeBoard(char board[SIZE][SIZE]) {
for (int i = 0; i < SIZE; i++) {
for (int j = 0; j < SIZE; j++) {
if ((i + j) % 2 == 0) {
board[i][j] = ' ';
} else {
if (i < 3) {
board[i][j] = 'X';
} else if (i > 4) {
board[i][j] = 'O';
} else {
board[i][j] = ' ';
}
}
}
}
}
void printBoard(char board[SIZE][SIZE]) {
// Display the current state of the board
printf(" 0 1 2 3 4 5 6 7\n");
for (int i = 0; i < SIZE; i++) {
printf("%d ", i);
for (int j = 0; j < SIZE; j++) {
printf("%c ", board[i][j]);
}
printf("\n");
}
}
int isValidMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol) {
// Check if the move is valid
if (startRow < 0 || startRow >= SIZE || startCol < 0 || startCol >= SIZE ||
endRow < 0 || endRow >= SIZE || endCol < 0 || endCol >= SIZE) {
return 0; // Out of bounds
}
if (board[startRow][startCol] == ' ' || board[endRow][endCol] != ' ') {
return 0; // Invalid starting or ending positions
}
if (player == 1 && board[startRow][startCol] != 'X') {
return 0; // Invalid player 1 piece
}
if (player == 2 && board[startRow][startCol] != 'O') {
return 0; // Invalid player 2 piece
}
if (abs(endRow - startRow) != 1 || abs(endCol - startCol) != 1) {
if (!isCaptureMove(board, player, startRow, startCol, endRow, endCol)) {
return 0; // Not a valid non-capture move
}
}
return 1;
}
int isCaptureMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol) {
// Check if the move is a valid capture move
int midRow = (startRow + endRow) / 2;
int midCol = (startCol + endCol) / 2;
if (midRow < 0 || midRow >= SIZE || midCol < 0 || midCol >= SIZE) {
return 0; // Out of bounds
}
if (player == 1 && board[midRow][midCol] != 'O') {
return 0; // Invalid capture attempt for player 1
}
if (player == 2 && board[midRow][midCol] != 'X') {
return 0; // Invalid capture attempt for player 2
}
return 1;
}
int performMove(char board[SIZE][SIZE], int player, int startRow, int startCol, int endRow, int endCol) {
// Perform the move and update the board
board[endRow][endCol] = board[startRow][startCol];
board[startRow][startCol] = ' ';
if (abs(endRow - startRow) == 2) {
// Capture move, remove the captured piece
int midRow = (startRow + endRow) / 2;
int midCol = (startCol + endCol) / 2;
board[midRow][midCol] = ' ';
}
return 1;
}
int isGameOver(char board[SIZE][SIZE]) {
// Check if the game is over
int player1Pieces = 0;
int player2Pieces = 0;
for (int i = 0; i < SIZE; i++) {
for (int j = 0; j < SIZE; j++) {
if (board[i][j] == 'X') {
player1Pieces++;
} else if (board[i][j] == 'O') {
player2Pieces++;
}
}
}
return (player1Pieces == 0 || player2Pieces == 0);
}