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Document core.MAP_BLOCKSIZE constant in lua_api.md (#15911)

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Xiaochuan Ye 2025-03-17 03:02:42 +08:00 • committed by GitHub
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@ -1681,7 +1681,9 @@ roughly 1x1x1 meters in size.
A 'mapblock' (often abbreviated to 'block') is 16x16x16 nodes and is the A 'mapblock' (often abbreviated to 'block') is 16x16x16 nodes and is the
fundamental region of a world that is stored in the world database, sent to fundamental region of a world that is stored in the world database, sent to
clients and handled by many parts of the engine. clients and handled by many parts of the engine. This size is defined by the constant
`core.MAP_BLOCKSIZE` (=16).
'mapblock' is preferred terminology to 'block' to help avoid confusion with 'mapblock' is preferred terminology to 'block' to help avoid confusion with
'node', however 'block' often appears in the API. 'node', however 'block' often appears in the API.
@ -1713,7 +1715,7 @@ node position (0,0,0) to node position (15,15,15).
To calculate the blockpos of the mapblock that contains the node at 'nodepos', To calculate the blockpos of the mapblock that contains the node at 'nodepos',
for each axis: for each axis:
* blockpos = math.floor(nodepos / 16) * blockpos = math.floor(nodepos / core.MAP_BLOCKSIZE)
#### Converting blockpos to min/max node positions #### Converting blockpos to min/max node positions
@ -1721,9 +1723,9 @@ To calculate the min/max node positions contained in the mapblock at 'blockpos',
for each axis: for each axis:
* Minimum: * Minimum:
nodepos = blockpos * 16 nodepos = blockpos * core.MAP_BLOCKSIZE
* Maximum: * Maximum:
nodepos = blockpos * 16 + 15 nodepos = (blockpos + 1) * core.MAP_BLOCKSIZE - 1