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fix(chnk visibility) Use long to avoid int overflow

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Use long representation of the distance between tested chunk and center of tested limit to avoid int overflow while computing the distance compared to limit radius using square delta value
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gmfamily 2022-08-31 19:35:18 +02:00 committed by GitHub
parent 66fe5d4a8b
commit 61bfe66430
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1 changed files with 5 additions and 1 deletions
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DynmapCore/src/main/java/org/dynmap/utils/RoundVisibilityLimit.java
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@ -25,7 +25,11 @@ public class RoundVisibilityLimit implements VisibilityLimit {
else
chunk_corner_z = chunk_z * 16 + 15;
return (chunk_corner_x - x_center) * (chunk_corner_x - x_center) + (chunk_corner_z - z_center) * (chunk_corner_z - z_center) < radius * radius;
// By gmfamily - Use long representation of the distance between tested chunk and center of tested limit
// to avoid int overflow while computing the distance compared to limit radius using square delta value
long chunk_delta_x = chunk_corner_x - x_center;
long chunk_delta_z = chunk_corner_z - z_center;
return chunk_delta_x * chunk_delta_x + chunk_delta_z * chunk_delta_z < (long) radius * radius;
}
@Override