Files
Bubberstation/code/modules/mapping
LemonInTheDark e5a2b0f16e Micros the lighting subsystem (Saves a second of init) (#69838)
About The Pull Request

Micros lighting objects, and their creation

We save a good bit of time by not walking space turfs adjacent to new objects.
We also save some time with micros in the actual underlay update logic.

I swear dude we spend like 0.8 seconds of init applying the underlay. I want threaded maptick already

Micros lighting sources, and corner creation

A: Corners were being passed just A turf, and then expected to generatecorners based on that. This is pointless.
It is better to instead pass in the coords of the bottom left turf, and then build in a circle. This saves like 0.3 seconds

B: We use so many damn datum vars in corner application that we just do not need to.
This resolves that, since it pissed me off. It's pointless. Lets cache em instead

There's some misc datum var caching going on here too. Lemme see...
Oh and a bit of shortcutting for a for loop, since it was a tad expensive on its own.

Also I removed the turfs list, because it does fucking nothing. Why is this still here.

All my little optimizations save about 1 second of init I think
Not great, but not bad, and plus actual lighting work is faster now too
Why It's Good For The Game

Speed
2022-09-27 09:56:35 +13:00
..

The code in this module originally evolved from dmm_suite and has since been
specialized for SS13 and otherwise tweaked to fit /tg/station's needs.

dmm_suite version 1.0
	Released January 30th, 2011.

NOTE: Map saving functionality removed

defines the object /dmm_suite
	- Provides the proc load_map()
		- Loads the specified map file onto the specified z-level.
	- provides the proc write_map()
		- Returns a text string of the map in dmm format
			ready for output to a file.
	- provides the proc save_map()
		- Returns a .dmm file if map is saved
		- Returns FALSE if map fails to save

The dmm_suite provides saving and loading of map files in BYOND's native DMM map
format. It approximates the map saving and loading processes of the Dream Maker
and Dream Seeker programs so as to allow editing, saving, and loading of maps at
runtime.

------------------------

To save a map at runtime, create an instance of /dmm_suite, and then call
write_map(), which accepts three arguments:
	- A turf representing one corner of a three dimensional grid (Required).
	- Another turf representing the other corner of the same grid (Required).
	- Any, or a combination, of several bit flags (Optional, see documentation).

The order in which the turfs are supplied does not matter, the /dmm_writer will
determine the grid containing both, in much the same way as DM's block() function.
write_map() will then return a string representing the saved map in dmm format;
this string can then be saved to a file, or used for any other purose.

------------------------

To load a map at runtime, create an instance of /dmm_suite, and then call load_map(),
which accepts two arguments:
	- A .dmm file to load (Required).
	- A number representing the z-level on which to start loading the map (Optional).

The /dmm_suite will load the map file starting on the specified z-level. If no
z-level	was specified, world.maxz will be increased so as to fit the map. Note
that if you wish to load a map onto a z-level that already has objects on it,
you will have to handle the removal of those objects. Otherwise the new map will
simply load the new objects on top of the old ones.

Also note that all type paths specified in the .dmm file must exist in the world's
code, and that the /dmm_reader trusts that files to be loaded are in fact valid
.dmm files. Errors in the .dmm format will cause runtime errors.