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BiomeArray: check lower bounds in ::idx() as well as upper bounds

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Dylan K. Taylor 2020-05-16 18:42:47 +01:00
parent ae6a7b7cc9
commit b3454b3488
1 changed files with 1 additions and 1 deletions
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2
src/world/format/BiomeArray.php
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@ -43,7 +43,7 @@ final class BiomeArray{
} }
private static function idx(int $x, int $z) : int{ private static function idx(int $x, int $z) : int{
if($x >= 16 or $z >= 16){ if($x < 0 or $x >= 16 or $z < 0 or $z >= 16){
throw new \InvalidArgumentException("x and z must be in the range 0-15"); throw new \InvalidArgumentException("x and z must be in the range 0-15");
} }
return ($z << 4) | $x; return ($z << 4) | $x;