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added the routine _makeChunk for internal use

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This commit is contained in:
David Vierra 2010-11-29 21:40:47 -10:00
parent bbb37dbca8
commit c9fe2afff1
1 changed files with 14 additions and 10 deletions
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24
mclevel.py
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@ -2283,22 +2283,26 @@ class MCInfdevOldLevel(MCLevel):
if chunks is None: chunks = self.allChunks;
return [self.getChunk(cx,cz) for (cx,cz) in chunks if self.containsChunk(cx,cz)]
def _makeChunk(self, cx,cz):
"""return the chunk object at the given position, creating it if necessary.
because loading the chunk is done later, accesses to chunk attributes may
raise ChunkMalformed"""
if not self.containsChunk(cx,cz):
raise ChunkNotPresent, (cx,cz);
if not (cx,cz) in self._loadedChunks:
self._loadedChunks[cx,cz] = InfdevChunk(self, (cx, cz));
return self._loadedChunks[cx,cz]
def getChunk(self, cx, cz):
""" read the chunk from disk, load it, and return it.
decompression and unpacking is done lazily."""
if self._allChunks is not None:
if not (cx,cz) in self._allChunks:
raise ChunkNotPresent, (cx,cz);
if not (cx,cz) in self._loadedChunks:
self._loadedChunks[cx,cz] = InfdevChunk(self, (cx, cz));
#raise ChunkNotPresent, "Chunk {0} not present".format((cx,cz))
c = self._loadedChunks[cx,cz]
c = self._makeChunk(cx,cz)
c.load();
if not (cx,cz) in self._loadedChunks:
raise ChunkMalformed, "Chunk {0} malformed".format((cx,cz))