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Fix multi block change

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This commit is contained in:
KennyTV 2021-02-11 09:45:06 +01:00
parent c75f497c79
commit 6738b2a16b
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GPG Key ID: 6BE3B555EBC5982B
1 changed files with 2 additions and 32 deletions
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34
core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_4to1_17/packets/BlockItemPackets1_17.java
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@ -4,7 +4,6 @@ import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
import nl.matsv.viabackwards.protocol.protocol1_16_4to1_17.Protocol1_16_4To1_17;
import us.myles.ViaVersion.api.PacketWrapper;
import us.myles.ViaVersion.api.data.UserConnection;
import us.myles.ViaVersion.api.minecraft.BlockChangeRecord;
import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
@ -162,18 +161,14 @@ public class BlockItemPackets1_17 extends nl.matsv.viabackwards.api.rewriters.It
map(Type.LONG); // Chunk pos
map(Type.BOOLEAN); // Suppress light updates
handler((wrapper) -> {
// Cancel if above the 256 block limit
// Remove sections below y 0 and above 255
long chunkPos = wrapper.get(Type.LONG, 0);
int chunkY = (int) (chunkPos << 44 >> 44);
int flattenedChunkY = getFlattenedYSection(wrapper.user(), chunkY);
if (flattenedChunkY < 0 || flattenedChunkY > 15) {
if (chunkY < 0 || chunkY > 15) {
wrapper.cancel();
return;
}
// Encode changed y pos
wrapper.set(Type.LONG, 0, encodeChunkPos(decodeChunkX(chunkPos), flattenedChunkY, decodeChunkZ(chunkPos)));
BlockChangeRecord[] records = wrapper.passthrough(Type.VAR_LONG_BLOCK_CHANGE_RECORD_ARRAY);
for (BlockChangeRecord record : records) {
record.setBlockId(protocol.getMappingData().getNewBlockStateId(record.getBlockId()));
@ -272,29 +267,4 @@ public class BlockItemPackets1_17 extends nl.matsv.viabackwards.api.rewriters.It
}
return cutMask;
}
private int getFlattenedYSection(UserConnection connection, int chunkSectionY) {
EntityTracker tracker = connection.get(EntityTracker.class);
return chunkSectionY + (tracker.getCurrentMinY() << 4);
}
private long encodeChunkPos(int chunkX, int chunkY, int chunkZ) {
long l = 0L;
l |= (chunkX & 0x3FFFFFL) << 42;
l |= (chunkY & 0xFFFFFL);
l |= (chunkZ & 0x3FFFFFL) << 20;
return l;
}
private int decodeChunkX(long chunkPos) {
return (int) (chunkPos >> 42);
}
private int decodeChunkY(long chunkPos) {
return (int) (chunkPos << 44 >> 44);
}
private int decodeChunkZ(long chunkPos) {
return (int) (chunkPos << 22 >> 42);
}
}