On Multi-Z compatible maps, if a tile is missing a ceiling (IE there is an open space above it), it will display an overlay to show this. This makes it easier to know where the hole in the ceiling is without having to go to the ceiling. Overlay sprite by Mechoid.
Also fixes space tiles appearing when meteors/explosions/other fun things occur on the Southern Cross map instead of open space.
* Polaris initial plane upstream merge
* POLARIS: Fix RIG visors with new plane system, and material scanner VIS_FULLBRIGHT
* POLARIS: Fix GetFlatIcon so that cameras and id pictures don't show the HUD overlays.
* POLARIS: Adds a 'alter values' proc for plane master ease of tweaking
Setting stuff like colorblindness variety and things.
* Remove NIF reference, fix lighting layer define
* Handle effects above lighting plane
* Moved all layer defines to planes+layers.dm
* Fixed overlays that are supposed to be above lighting to use the PLANE_LIGHTING_ABOVE
* Merge: 3000% human/update_icons() speed improvement
* Merge: Avoid ghosts pointing at things
Ports an item stack that can be used to mark trails, useful for explorers, miners, and anyone else who doesn't want to get lost or wants to make the room more colorful.
* These aren't supposed to be here!!
* Adds new Security pistol and large capacity magazines
* Removes new pistol from Security spawns
* Removed references of Beretta because it's not one
* to_chat() replacement.
* Revert calling target.init_dir() before connecting.
* This change was added in https://github.com/PolarisSS13/Polaris/pull/3775 to counteract `dir` not being set prior to New() for dynamically loaded maps. The root cause was /atom/New() not calling _preloader.load(). Undoing the change now that /atom/New() is fixed.
* The addition of the init_dir() proc itself however, is useful, because there ARE other times some atmos machinery will want to re-initialize its dir, specifically whenever it is rotated.
* init_dir() must be called in the constructor of all atmospherics machines capable of connecting to another. Since it has to happen for ALL machines, lets move that call to /obj/machinery/atmospherics/New()
* Rename /obj/machinery/atmospherics initialize() to atmos_init()
* These days `initialize()` is used to handle general object initialization that is moved outside of New(). The node connection discovery of atmos machinery needs to happen after all that, and so needs to be in a separate proc.
* Make sure to actually call atmos_init during system startup.
