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OBD:SNDD: Difference between revisions
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→PS2 implementation
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(Yes, the PS2 retail level0_Final.dat only has those five sounds. All the other sounds (weapons, particles, impacts, footsteps, etc) are stored per-chapter, which causes a lot of duplicates but supposedly lightens the memory usage for a given level.) | (Yes, the PS2 retail level0_Final.dat only has those five sounds. All the other sounds (weapons, particles, impacts, footsteps, etc) are stored per-chapter, which causes a lot of duplicates but supposedly lightens the memory usage for a given level.) | ||
The layout is similar to the PC demo and Mac SNDDs described above - and indeed the SNDD template checksum is | The layout is similar to the PC demo and Mac SNDDs described above - and indeed the SNDD template checksum is the same for PC demo, Mac and PS2, implying that the data structure in the .dat is the same. However, there are two major novelties/anomalies (apart from the all the music being mono), emphasized above with '''''bold italic'''''. First, the five .raw offsets at the end of each SNDD are obviously not pointers into level0_Final.raw or level0_Final.sep (the .raw's size is 4 MB, the .sep's 6MB, and the pointers are in the 311 MB range, possibly pointing into a memory region where the sounds will be stored at runtime). Second, the 2-byte padding field between the duration and the .raw storage size is obviously not blank here; rather, it is an index into a file called SOUNDS\LEVEL0\SOUND.DAT, which looks like this: | ||
0x00: '''''00 00 20 F7 00 00 00 00 00 00''''' 01 00 A0 F6 00 00 | 0x00: '''''00 00 20 F7 00 00 00 00 00 00''''' 01 00 A0 F6 00 00 | ||
0x10: 20 F7 00 00 '''''02 00 40 86 01 00 C0 ED 01 00''''' 03 00 | 0x10: 20 F7 00 00 '''''02 00 40 86 01 00 C0 ED 01 00''''' 03 00 | ||