sd_DynamicAreaLighting

by Shadowdarke

The sd_DynamicAreaLighting library provides dynamic lighting with minimal cpu and bandwidth usage by shifting turfs between areas which represent varying shades of darkness.

Version 9: 1-29-07

• SetOpacity() no longer causes errors due to mob.sight settings.

Version 8: 4-6-05

• Added some optimizations by Lummox JR.


• Fixed a bug that caused outside areas to generate improperly. (Xooxer)

Version 7: 2-23-04

• Added global sd_top_luminosity to cut down on the size of internally used lists.


• Added the turf sd_LumReset() proc.


• Changed area.New() to allow zeroing an area's sd_lighting var in the same tick it is created without the need to strip the darkness overlay manually. If you set sd_lighting after the first tick, you should be sure to remove the sd_darkimage from the area's overlays.

Version 6: 3-6-03
Extended the mob procs slightly to compensate for mob.sight settings. The old versions would allow the light to shine through opaque walls if a mob's sight was set to SEE_TURFS.

Version 5: 2-25-03
Changed the turf.sd_lumcount var to a tmp var, so sd_DAL works properly with save files.

Version 4: 12-21-02
Fixed a bug that prevented outside areas from lighting properly if sd_outside was set in the map editor.

Version 3:
Added support for daylight spilling indoors.
Fixed an error involving atoms moving into and out of the contents of non-turfs.

Version 2:
A major rehash of the internal workings. sd_DAL now works with the areas already in your game!

Anyone already using version 1 will need to make some changes. Please read the comments in the library file.