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Author SHA1 Message Date
James Turner
9b900e9430 Implement a persistent cache for navigation data.
Cache the parsed navigation and airport data in a binary file to reduce
startup times and memory consumption (since only referenced FGPositioned
elements are held in memory).

Data will be reimported when the mod-time of any input file is changed.
If a global file is changed (nav.dat, awy.dat, apt.dat, etc), the cache
will be completely rebuilt, which takes approximately 30 seconds on
moderate hardware. (Future work may reduce this).
2012-09-19 11:38:19 +01:00
James Turner
ffbb0a0e5d Sink position-init code into its own file.
Separate other init functions from position init, since they are unrelated, and made fg_init.cxx very complex. Next step will be brining some sanity to the position init logic :)
2012-09-18 20:50:28 +01:00