bedohswe/bootsector_tictactoe
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make the code ever so slightly less stupid.

Browse Source
This commit is contained in:
bʰedoh₂ swé 2025-05-01 20:11:16 +05:00
parent 3a02a0ee8a
commit 60d8f9bc31
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
boot.c
View File

@ -2,14 +2,14 @@
#include <stdbool.h>
#include "hedley.h"
#define BOARD ((Cell*)0x7F00)
typedef enum : char {
NONE = ' ',
CROSS = 'X',
NOT = 'O'
} Cell;
Cell* board = ((Cell*)0x7F00);
HEDLEY_ALWAYS_INLINE char readchar(void);
HEDLEY_ALWAYS_INLINE bool checkwin(Cell c);
HEDLEY_NEVER_INLINE void putchar(char);
@ -26,7 +26,7 @@ void _start(void) {
Cell cur = CROSS;
for (char i = 0; i < 3; i++)
for (char j = 0; j < 3; j++)
BOARD[i * 3 + j] = NONE;
board[i * 3 + j] = NONE;
while (1) {
printboard();
char k = readchar();
@ -40,9 +40,9 @@ void _start(void) {
else
o = (0x2C - 8);
size_t c = numpadkeys[k - o];
if (BOARD[c] != NONE)
if (board[c] != NONE)
continue;
BOARD[c] = cur;
board[c] = cur;
if (checkwin(cur))
break;
if (cur == CROSS)
@ -73,7 +73,7 @@ void printboard(void) {
);
for (char i = 0; i < 3; i++) {
for (char j = 0; j < 3; j++) {
putchar(BOARD[i * 3 + j]);
putchar(board[i * 3 + j]);
}
putchar('\n');
putchar('\r');
@ -83,14 +83,14 @@ void printboard(void) {
HEDLEY_ALWAYS_INLINE
bool checkwin(Cell c) {
for (size_t i = 0; i <= 2; i++)
if ((BOARD[i] == c) && (BOARD[i + 3] == c) && (BOARD[i + 6] == c))
if ((board[i] == c) && (board[i + 3] == c) && (board[i + 6] == c))
return true;
for (size_t i = 0; i <= 2; i++)
if ((BOARD[3*i] == c) && (BOARD[3*i + 1] == c) && (BOARD[3*i + 2] == c))
if ((board[3*i] == c) && (board[3*i + 1] == c) && (board[3*i + 2] == c))
return true;
if (BOARD[0] == c && BOARD[4] == c && BOARD[8] == c)
if (board[0] == c && board[4] == c && board[8] == c)
return true;
if (BOARD[2] == c && BOARD[4] == c && BOARD[6] == c)
if (board[2] == c && board[4] == c && board[6] == c)
return true;
return false;
}