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Support MTEMP.TMP map header file + related CA_LoadFile changes #63

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wants to merge 3 commits into from
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Support MTEMP.TMP map header file + related CA_LoadFile changes #63

wants to merge 3 commits into from

Commits on Sep 11, 2024

  1. id_ca: Fix a possible memory leak in CA_LoadFile. 

    The Catacomb 3-D sources and reconstructed Keen 4-6 v1.4-5 sources,
along with Blake Stone sources, show no use of the function, while
the known uses in the sources for the Catacomb Adventure Series
and Wolfenstein 3D ignore the returned value.
    @NY00123
    NY00123 committed Sep 11, 2024
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  2. id_ca: Split the function CA_LoadFile 

    By calling CAL_LoadFile_Int directly, it should be possible
to open a file without adjusting its file extension.
    @NY00123
    NY00123 committed Sep 11, 2024
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  3. id_ca: Support loading map header file from MTEMP.TMP 

    MTEMP.TMP was the file generated by TED5.EXE for Carmack-compressed files,
while MAPHEAD.EXT would be used for maps not going through that phase.
The situation possibly changed in Wolfenstein 3D shareware v1.1,
using MAPHEAD.EXT with Carmack compression altogether.
Due to the lack of awareness for years, MAPHEAD.EXT had been commonly used
for Keen 4-6 map editing with Carmack compression, and the open-source release
of Keen Dreams from 2014 similarly used MAPHEAD.KDR with Huffman compression.
For purposes of backwards compatibility, Omnispeak still accepts MAPHEAD.EXT.
    @NY00123
    NY00123 committed Sep 11, 2024
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