converting to bit instead of varibles

src/main.c

@@ -2,40 +2,100 @@
 #include <unistd.h>
 
 const char p1 = 'x', p2 = 'o';
-char temp = 'x';
+char temp = 0;
-char buf[9] = { ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
+// char buf[9] = { ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
 
-int check_line(const char id) {
+unsigned int
-    unsigned int player_mask = 0;
+encoder(unsigned int mask, int length, int point)
-    for (int i = 0; i < 9; i++) {
+{
-        if (buf[i] == id) {
+	int shift_amount = point * 2;
-            player_mask |= (1 << i); // This "turns on" the i-th bit
+	if (length > 3)
+	{
+		length = 3;
 	}
+	unsigned int clear_mask = ~(0x03 << shift_amount);
+	mask &= clear_mask;
+	mask |= length << shift_amount;
+	return mask;
 }
-    static const int win_patterns[8] = {
+
-        7, 56, 448,    // Rows: 0-1-2, 3-4-5, 6-7-8
+unsigned int
-        73, 146, 292,  // Cols: 0-3-6, 1-4-7, 2-5-8
+decoder(unsigned int buf, int point)
-        273, 84        // Diagonals: 0-4-8, 2-4-6
+{
-    };
+	return (buf >> (point * 2)) & 0x03;
-    for (int i = 0; i < 8; i++) {
-        if ((player_mask & win_patterns[i]) == win_patterns[i]) {
-            return 1; // Win found!
-        }
-    }
-    return 0;
 }
 
+// int
+// check_line(const char id)
+// {
+// 	unsigned int player_mask = 0;
+// 	for (int i = 0; i < 9; i++)
+// 	{
+// 		if (buf[i] == id)
+// 		{
+// 			player_mask |=
+// 			    (1 << i);  // This "turns on" the i-th bit
+// 		}
+// 	}
+// 	static const int win_patterns[8] = {
+// 		7,   56,  448,	// Rows: 0-1-2, 3-4-5, 6-7-8
+// 		73,  146, 292,	// Cols: 0-3-6, 1-4-7, 2-5-8
+// 		273, 84		// Diagonals: 0-4-8, 2-4-6
+// 	};
+// 	for (int i = 0; i < 8; i++)
+// 	{
+// 		if ((player_mask & win_patterns[i]) == win_patterns[i])
+// 		{
+// 			return 1;  // Win found!
+// 		}
+// 	}
+// 	return 0;
+// }
+
 void
-draw_board()
+draw_board(unsigned int buf)
 {
 	char divider[] = " - + - + -\n";
 	write(1, "\033[H\033[J", sizeof("\033[H\033[J") - 1);
 	for (int i = 0; i < 9; i += 3)
 	{
 		char row[] = " 0 | 0 | 0\n";
-		row[1] = buf[i];
+		if (decoder(buf, i) == 1)
-		row[5] = buf[i + 1];
+		{
-		row[9] = buf[i + 2];
+			row[1] = 'x';
+		}
+		else if (decoder(buf, i) == 2)
+		{
+			row[1] = 'o';
+		}
+		else
+		{
+			row[1] = ' ';
+		}
+		if (decoder(buf, i + 1) == 1)
+		{
+			row[5] = 'x';
+		}
+		else if (decoder(buf, i + 1) == 2)
+		{
+			row[5] = 'o';
+		}
+		else
+		{
+			row[5] = ' ';
+		}
+		if (decoder(buf, i + 2) == 1)
+		{
+			row[9] = 'x';
+		}
+		else if (decoder(buf, i + 2) == 2)
+		{
+			row[9] = 'o';
+		}
+		else
+		{
+			row[9] = ' ';
+		}
 		write(1, row, sizeof(row) - 1);
 		if (i < 6) write(1, divider, sizeof(divider) - 1);
 	}
@@ -44,9 +104,48 @@ draw_board()
 	write(1, "\n", 1);
 }
 
+void
+print_bits_int(unsigned int n)
+{
+	for (int i = 31; i >= 0; i--)
+	{
+		if (i == 7 || i == 15 || i == 23) write(1, " ", 1);
+		char bit = (n & (1 << i)) ? '1' : '0';
+		write(1, &bit, 1);
+	}
+	write(1, "\n", 1);
+}
+
 int
 main()
 {
+	unsigned player_mask = 0;
+	player_mask = encoder(player_mask, 1, 0);
+	draw_board(player_mask);
+	// player_mask = encoder(player_mask, 1, 1);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 2, 3);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 2, 4);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 1, 5);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 2, 6);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 1, 7);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 1, 8);
+	// print_bits_int(player_mask);
+	//
+	//
+	// print_bits_int(decoder(player_mask, 0));
+	// draw_board(player_mask);
+	// player_mask = decoder(player_mask, 7);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 1, 13);
+	// print_bits_int(player_mask);
+	// player_mask = encoder(player_mask, 2, 14);
+	// print_bits_int(player_mask);
 	static struct termios oldt, newt;
 	tcgetattr(STDIN_FILENO, &oldt);
 	newt = oldt;
@@ -55,35 +154,27 @@ main()
 	write(1, "\033[?25l", sizeof("\033[?25l") - 1);
 	while (1)
 	{
-		if (check_line(p1))
+		unsigned char filled = 0;
-		{
-			break;
-		}
-		if (check_line(p2))
-		{
-			write(1, "P2 wins!\n", sizeof("P2 wins!\n") - 1);
-			break;
-		}
-		int filled = 0;
 		while (filled < 9)
 		{
-			draw_board();
+			draw_board(player_mask);
-			char ch;
+			unsigned char ch;
 			read(0, &ch, 1);
 			if (ch == 'q') break;
-			int idx = ch - '1';
+			unsigned char idx = ch - '1';
-			if (ch >= '1' && ch <= '9' && buf[idx] == ' ')
+			if (ch >= '1' && ch <= '9' && decoder(player_mask, idx) != (1 | 2))
 			{
-				buf[idx] = temp;
+				// buf[idx] = temp;
-				if (check_line(temp))
+				player_mask = encoder(player_mask, 1, idx);
-				{
+				// if (check_line(temp))
-					draw_board();
+				// {
-					write(1, &temp, 1);
+				// 	draw_board(player_mask);
-					write(1, " wins!\n",
+				// 	write(1, &temp, 1);
-					      sizeof(" wins!\n") - 1);
+				// 	write(1, " wins!\n",
-					goto end;
+				// 	      sizeof(" wins!\n") - 1);
-				}
+				// 	goto end;
-				temp = (temp == p1) ? p2 : p1;
+				// }
+				// temp = (temp == 1) ? 2 : 1;
 				filled++;
 			}
 		}