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fix: add out of bounds checks to tetris_intersect

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Quinn
2025-09-09 21:57:58 +02:00
parent 1d39bb1507
commit 2da740a5eb
1 changed files with 5 additions and 1 deletions
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6
src/tetris.c
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@@ -62,7 +62,11 @@ int tetris_intersect(const u8 *restrict const *restrict rows, u8 tetromino, uint
uint *pos = (uint[8]){x, y, x, y, x, y, x, y}; uint *pos = (uint[8]){x, y, x, y, x, y, x, y};
uint *end = pos + 8; uint *end = pos + 8;
tetris_get_blocks(tetromino, pos); tetris_get_blocks(tetromino, pos);
while (pos < end && !rows[*(pos + 1)][*pos]) pos += 2; for (; pos < end; pos += 2) {
if (*(pos + 0) >= TET_WIDTH) break;
if (*(pos + 1) >= TET_HEIGHT) break;
if (rows[*(pos + 1)][*pos]) break;
}
return pos < end; return pos < end;
} }