Dnc.db

he World\dnc.db file in misc.mpq specifies the day-night cycle. Fortunately, the folks at Blizzard were kind enough to label every data field in this file! :D

Header Offset Type Description 0x00 uint32 nFields - Number of fields 0x04 uint32 Number of fields (again)

Next, nFields * 8 bytes define the rest of the file structure: Offset Type Description 0x00 uint32 Always 0x53 0x04 uint32 Offset to field name (which is zero-terminated) [edit] Data

After the header come the actual records, each being nFields * 8 bytes in size. Every field value has this structure: Offset Type Description 0x00 uint32 Always 0x46 0x04 float Field value

Here is the list of field names:

  1. Hour
  2. Minute
  3. DayIntensity
  4. DayR
  5. DayG
  6. DayB
  7. DayX
  8. DayY
  9. DayZ
 10. NightIntensity
 11. NightR
 12. NightG
 13. NightB
 14. NightX
 15. NightY
 16. NightZ
 17. AmbientIntensity
 18. AmbientR
 19. AmbientG
 20. AmbientB
 21. FogDepth
 22. FogIntensity
 23. FogR
 24. FogG
 25. FogB 

The file contains 24 records, one for each whole hour (Hour = 0 to 23, Minute = 0)

This looks like info for outdoor lighting with respect to the day-night cycle. The colors for the differnt light types are self-explanatory. The XYZ coordinates specify a directional light source.