diff options
Diffstat (limited to 'src/mapgen/mapgen.cpp')
| -rw-r--r-- | src/mapgen/mapgen.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mapgen/mapgen.cpp b/src/mapgen/mapgen.cpp index d767bd264..1f2ac491e 100644 --- a/src/mapgen/mapgen.cpp +++ b/src/mapgen/mapgen.cpp @@ -238,7 +238,8 @@ u32 Mapgen::getBlockSeed(v3s16 p, s32 seed) u32 Mapgen::getBlockSeed2(v3s16 p, s32 seed) { - u32 n = 1619 * p.X + 31337 * p.Y + 52591 * p.Z + 1013 * seed; + // Multiply by unsigned number to avoid signed overflow (UB) + u32 n = 1619U * p.X + 31337U * p.Y + 52591U * p.Z + 1013U * seed; n = (n >> 13) ^ n; return (n * (n * n * 60493 + 19990303) + 1376312589); } |