From 0976b24cad90547fec8a1252f7e962b13d711501 Mon Sep 17 00:00:00 2001
From: "Adam T. Carpenter" <Commodore@chunkybluegiant>
Date: Sat, 26 Apr 2025 23:57:07 -0400
Subject: solver and prompter

---
 src/main.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/main.c

(limited to 'src/main.c')

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..ebccfd4
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,92 @@
+#include <conio.h>
+#include <stdio.h>
+
+#include "consts.h"
+#include "protos.h"
+
+char is_board_solved(BOARD board) {
+    char cases[8] = {EMPTY};
+    char i;
+
+    // rows and cols
+    for (i = 0; i < 3; i++) {
+        cases[i] = board[i][0] * board[i][1] * board[i][2];
+        cases[i + 3] = board[0][i] * board[1][i] * board[2][i];
+    }
+
+    // diagonals
+    cases[6] = board[0][0] * board[1][1] * board[2][2];
+    cases[7] = board[0][2] * board[1][1] * board[2][0];
+
+    // check cases for winner
+    for (i = 0; i < 8; i++) {
+        if (cases[i] == 1) {
+            // X won
+            return X;
+        } else if (cases[i] == 8) {
+            // O won
+            return O;
+        }
+    }
+
+    // check cases for remaining moves
+    for (i = 0; i < 9; i++) {
+        if (cases[i] == EMPTY) {
+            // more spaces left; game continues
+            return EMPTY;
+        }
+    }
+
+    // stalemate
+    return TIE;
+}
+
+void print_board(BOARD board) {
+    char i, j;
+
+    for (i = 0; i < 3; i++) {
+        for (j = 0; j < 3; j++) {
+            printf("%d ", board[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+int main() {
+    char solution = EMPTY;
+    char move = EMPTY;
+    char move_x = EMPTY;
+    char move_y = EMPTY;
+    BOARD board = {{EMPTY}, {EMPTY}, {EMPTY}};
+
+    while (1) {
+        print_board(board);
+
+        solution = is_board_solved(board);
+        switch (solution) {
+            case X:
+                printf("X won");
+                break;
+            case O:
+                printf("O won");
+                break;
+            case TIE:
+                printf("Stalemate");
+                break;
+            default:
+                printf("Enter a move...");
+        }
+        printf("\n");
+
+        cursor(1);
+        move = cgetc() - '0' - 1;
+        // if move is not a number then bail
+        // if (move < 1 || move > 8) { invalid! }
+        move_x = move % 3;
+        move_y = move / 3;
+        // if move not already taken
+        board[move_y][move_x] = X;
+    }
+
+    return 0;
+}
\ No newline at end of file
-- 
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