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Chunk's Add section stores the first block in the lowest nibble

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This commit is contained in:
Albert Pham 2013-02-23 22:39:59 -08:00
parent 02abf41b83
commit e17a35bb15
1 changed files with 6 additions and 3 deletions
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9
src/main/java/com/sk89q/worldedit/data/AnvilChunk.java
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@ -117,11 +117,14 @@ public class AnvilChunk implements Chunk {
try {
int addId = 0;
// 4 bits, so we have to divide by 2 and get the right 4 bits
// The block ID is the combination of the Blocks byte array with the
// Add byte array. 'Blocks' stores the lowest 8 bits of a block's ID, and
// 'Add' stores the highest 4 bits of the ID. The first block is stored
// in the lowest nibble in the Add byte array.
if (index % 2 == 0) {
addId = (blocksAdd[section][index / 2] & 0xF0) << 4;
addId = (blocksAdd[section][index >> 1] & 0x0F) << 8;
} else {
addId = (blocksAdd[section][index / 2] & 0x0F) << 8;
addId = (blocksAdd[section][index >> 1] & 0xF0) << 4;
}
return blocks[section][index] & 0xFF + addId;