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improve coordinate conversion documentation, since our division was incorrect.

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Quinn
2025-07-13 12:05:27 +02:00
parent 8861e591f6
commit bcf7c9be60
1 changed files with 2 additions and 7 deletions
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9
docs/mc-data-spec.md
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@@ -39,13 +39,8 @@ Where \*.mca files are the newer variant.
### coordinate conversions
```c
// block->chunk:
return (x / 16) - sgn(x);
return (x >> 4) - (x & 0x80000000);
// chunk->region:
return (x / 32) - sgn(x);
return (x >> 5) - (x & 0x80000000);
return (x >> 4); // block->chunk
return (x >> 5); // chunk->region
```