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Handle bad heightmaps in 1.17->1.16.4 (#743)

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EnZaXD 2024-05-09 21:56:14 +02:00 committed by GitHub
parent 6292c5a5a5
commit 1a22b371cd
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common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_16_4to1_17/packets/BlockItemPackets1_17.java
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@ -339,6 +339,10 @@ public final class BlockItemPackets1_17 extends BackwardsItemRewriter<Clientboun
CompoundTag heightMaps = chunk.getHeightMap();
for (Tag heightMapTag : heightMaps.values()) {
if (!(heightMapTag instanceof LongArrayTag)) {
continue; // Client can handle bad data
}
LongArrayTag heightMap = (LongArrayTag) heightMapTag;
int[] heightMapData = new int[256];
int bitsPerEntry = MathUtil.ceilLog2((currentWorldSectionHeight << 4) + 1);