First Drop Protections: Gas and Static Turrets (#6363)

# About the pull request

This PR is a more fleshed out implementation of #6296 that can likely be
expanded more into Zonespace's plans for generators powering turrets and
more (additional help for low pop).

Smoke takes 6 seconds from its spawn before it will deal burn damage and
smoke in vehicles takes up to 7 seconds to dissipate.

The sequence of events are as follows:
1. After ~~two~~ three minutes from round start, a "fake" OB will be
launched to each landing zone that then causes a miasma (loosely
considered CN20-X miasma since it affects xenos too) in all landing zone
areas.
2. When the first dropship departs, the smoke will clear
3. When the first dropship lands, four ~~10~~ 20 minute gauss sentries
are automatically deployed randomly in the NW, NE, SW, and SE regions of
the LZ immediately around the dropship:

![dropship](https://github.com/cmss13-devs/cmss13/assets/76988376/b87de40a-a718-43ca-9776-f6e47118bc8f)
4. As the sentry runs out of power it warns the battery is running low
(battery still depletes if undeployed & cannot be moved or manipulated
any other than deployment/undeployment)
5. When unpowered, it can only be undeployed so it is no longer blocking
movement.

Since I am primarily using the `is_landing_zone` area var to determine
where to make inhospitable, all maps need to be verified:
- [X] LV-624
- [X] Shivas Snowball
- [X] Solaris Ridge
- [X] Fiorina Science Annex
- [X] Trijent Dam
- [ ] Sorokyne Strata (Would need mapping fixes to expand LZs, but would
conflict with #6071)
- [X] Kutjevo Refinery
- [X] Chances Claim
- [X] New Varadero
- [X] Corsat* (Current Corsat is fine,
#6217 would need some changes)
- [X] Fiorina Cellblocks*
- [X] LV-759 Hybrisa Prospera*

# Explain why it's good for the game

Ultimately this came about because of problems where marines are not
able to get a foothold quickly enough first drop before being
overwhelmed. This especially affects low pop.

The goals of this change are to make survivors holding LZs basically
impossible, to deter xenos from wanting to go near LZs, and to give
marines at least ~~10~~20 minutes after first drop time to create a FOB.

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

https://youtu.be/o8kE13Oua6o


![image](https://github.com/cmss13-devs/cmss13/assets/76988376/fdf2bc5e-44b6-4c7f-a01b-defbd5630bf0)

![vehicle
smoke](https://github.com/cmss13-devs/cmss13/assets/76988376/b62b020f-5988-4a6a-9646-8eacd9c168ca)

</details>

# Changelog
:cl: Drathek cuberound
balance: After three minutes from round start, landing zones will be
covered in a deadly gas
balance: First dropship deployment will clear gas, and first dropship
arrival will deploy 4 sentries that last 20 minutes
refactor: Refactored smoke code
maptweak: Expanded LZ areas on Trijent Dam and Kutjevo Refinery
maptweak: Shrunk LZ1 on Shivas Snowball and LZ2 on LV624 slightly
maptweak: Removed fog on Chances Claim since it will be replaced by
smoke and tweaked southern tunnel area to not be considered a LZ
fix: Fixed weird LZ lighting on some maps
spellcheck: Replaced/removed synth coughing emotes in smoke
/:cl:

---------

Co-authored-by: Vero <[email protected]>

code/__DEFINES/defenses.dm

@@ -22,6 +22,12 @@
 #define DEFENSE_BELL_TOWER 4
 #define DEFENSE_TESLA_COIL 5
 
+// Defines for /obj/structure/machinery/defenses/sentry/premade/deployable/colony/landing_zone
+#define TURRET_BATTERY_STATE_OK 0
+#define TURRET_BATTERY_STATE_LOW 1
+#define TURRET_BATTERY_STATE_CRITICAL 2
+#define TURRET_BATTERY_STATE_DEAD 3
+
 // What range the generator has to be in or defenses has to be in.
 #define GEN_SEARCH_RANGE 5
 #define GEN_PLASTEEL_COST 10

code/__DEFINES/misc.dm

@@ -25,6 +25,7 @@
 #define SMOKE_RANK_MED 3
 #define SMOKE_RANK_HIGH 4
 #define SMOKE_RANK_BOILER 5
+#define SMOKE_RANK_MAX 6
 
 // What kind of function to use for Explosions falling off.
 

code/game/area/BigRed.dm

@@ -515,27 +515,35 @@
 	is_resin_allowed = FALSE
 	ceiling_muffle = FALSE
 	base_muffle = MUFFLE_LOW
+	is_landing_zone = TRUE
 
 /area/bigredv2/outside/telecomm/lz2_cave
 	name = "\improper Central Grounds Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/n_cave
 	name = "\improper North Cave Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/warehouse
 	name = "\improper Warehouse Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/security
 	name = "\improper Security Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/store
 	name = "\improper General Store Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/admin
 	name = "\improper Administrative Communications Relay"
+	is_landing_zone = FALSE
 
 /area/bigredv2/outside/telecomm/engi
 	name = "\improper Engineering Communications Relay"
+	is_landing_zone = FALSE
 
 
 /area/bigredv2/outside/engineering

code/game/area/Corsat.dm

@@ -523,7 +523,6 @@
 /area/corsat/omega/hangar
 	name = "\improper Landing Bay Omega"
 	icon_state = "omega_hangar"
-	is_landing_zone = TRUE
 
 /area/corsat/omega/hangar/office
 	name = "\improper Omega Hangar Office"

code/game/area/DesertDam.dm

@@ -216,6 +216,7 @@
 /area/desert_dam/building/substation/northwest
 	name = "Command Substation"
 	icon_state = "northewestern_ss"
+	is_landing_zone = TRUE
 /area/desert_dam/building/substation/northeast
 	name = "Command Substation"
 	icon_state = "northeastern_ss"

code/game/area/LV522_Chances_Claim.dm

@@ -48,6 +48,11 @@
 	name = "Chance's Claim - Landing Zone One Tunnels"
 	ceiling = CEILING_METAL
 
+/area/lv522/landing_zone_1/tunnel/far
+	name = "Chance's Claim - Landing Zone One Tunnels"
+	ceiling = CEILING_METAL
+	is_landing_zone = FALSE
+
 /area/shuttle/drop1/lv522
 	name = "Chance's Claim - Dropship Alamo Landing Zone"
 	icon_state = "shuttle"

code/game/area/Prison_Station_FOP.dm

@@ -90,6 +90,7 @@
 /area/prison/security/checkpoint/hangar
 	name = "\improper Main Hangar Traffic Control"
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/prison/storage
 	icon_state = "engine_storage"
@@ -211,6 +212,7 @@
 	name = "\improper Hangar-Barracks Maintenance"
 	icon_state = "maint_e_shuttle"
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/prison/canteen
 	name = "\improper Canteen"
@@ -457,6 +459,7 @@
 /area/prison/monorail/east
 	name = "\improper East Monorail Station"
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/prison/monorail/west
 	name = "\improper West Monorail Station"
@@ -467,10 +470,12 @@
 /area/prison/hanger/main
 	name = "\improper Main Hanger"
 	icon_state = "hangar_alpha"
+	is_landing_zone = TRUE
 
 /area/prison/hanger/research
 	name = "\improper Research Hanger"
 	icon_state = "hangar_beta"
+	is_landing_zone = TRUE
 
 /area/prison/hangar_storage/main
 	name = "\improper Main Hangar Storage"
@@ -480,9 +485,11 @@
 	name = "\improper Research Hangar Storage"
 	icon_state = "toxstorage"
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/prison/hangar_storage/research/shuttle
 	name = "Corporate Shuttle"
+	is_landing_zone = FALSE
 
 /area/prison/telecomms
 	name = "\improper Telecommunications"

code/game/area/Sulaco.dm

@@ -14,6 +14,7 @@
 	flags_area = AREA_NOTUNNEL
 	is_landing_zone = TRUE
 	ceiling = CEILING_REINFORCED_METAL
+	base_lighting_alpha = 0
 
 /area/shuttle/drop1/Enter(atom/movable/O, atom/oldloc)
 	if(istype(O, /obj/structure/barricade))
@@ -24,6 +25,7 @@
 	name = "\improper Dropship Alamo"
 	icon_state = "shuttlered"
 	base_muffle = MUFFLE_HIGH
+	base_lighting_alpha = 255
 
 /area/shuttle/drop1/LV624
 	name = "\improper Dropship Alamo"
@@ -71,11 +73,13 @@
 	flags_area = AREA_NOTUNNEL
 	is_landing_zone = TRUE
 	ceiling = CEILING_REINFORCED_METAL
+	base_lighting_alpha = 0
 
 /area/shuttle/drop2/sulaco
 	name = "\improper Dropship Normandy"
 	icon_state = "shuttle"
 	base_muffle = MUFFLE_HIGH
+	base_lighting_alpha = 255
 
 /area/shuttle/drop2/LV624
 	name = "\improper Dropship Normandy"

code/game/area/kutjevo.dm

@@ -203,19 +203,22 @@
 	icon_state = "Colony_int"
 	ceiling = CEILING_METAL
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/kutjevo/interior/complex/Northwest_Flight_Control
 	name =  "Kutjevo Complex - Northwest Flight Control Room"
 	icon_state = "Colony_int"
 	ceiling = CEILING_METAL
 	is_resin_allowed = FALSE
+	is_landing_zone = TRUE
 
 /area/kutjevo/interior/complex/Northwest_Security_Checkpoint
 	name = "Kutjevo Complex - Northwest Security Checkpoint"
 	icon_state = "Colony_int"
 	ceiling = CEILING_METAL
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_SEC
+	is_landing_zone = TRUE
 
 //Out buildings + foremans
 /area/kutjevo/interior/power

code/game/area/prison.dm

@@ -57,6 +57,7 @@
 	name = "\improper control room"
 	icon_state = "bridge"
 	minimap_color = MINIMAP_AREA_COMMAND
+	is_landing_zone = TRUE
 
 /area/prison/hallway/central_ring
 	name = "\improper central ring"

code/game/area/prison_v3_fiorina.dm

@@ -183,6 +183,7 @@
 
 /area/fiorina/station/telecomm/lz1_tram
 	name = "Fiorina - LZ1 Aux Port Communications Relay"
+	is_landing_zone = TRUE
 
 /area/fiorina/station/telecomm/lz1_engineering
 	name = "Fiorina - Engineering Primary Communications Relay"

code/game/area/shiva.dm

@@ -239,6 +239,10 @@
 	name = "Shiva's Snowball - Blue Warehouse"
 	icon_state = "hangars1"
 
+/area/shiva/interior/warehouse/caves
+	name = "Shiva's Snowball - Blue Warehouse Ice Cave"
+	icon_state = "caves1"
+
 /area/shiva/interior/valley_huts
 	name = "Shiva's Snowball - Valley Bunker 1"
 	icon_state = "hangars1"
@@ -251,17 +255,14 @@
 	name = "Shiva's Snowball - Valley Disposals"
 	icon_state = "hangars3"
 
-/area/shiva/interior/warehouse/caves
-	name = "Shiva's Snowball - Blue Warehouse Ice Cave"
-	icon_state = "caves1"
-
 /area/shiva/interior/garage
 	name = "Shiva's Snowball - Cargo Tug Repair Station"
 	icon_state = "hangars2"
 
 /area/shiva/interior/lz2_habs
 	name = "Shiva's Snowball - Argentinian Research Headquarters"
 	icon_state = "bar1"
+	is_landing_zone = TRUE
 
 /area/shiva/interior/aux_power
 	name = "Shiva's Snowball - Auxiliary Generator Station"

code/game/area/varadero.dm

@@ -84,6 +84,7 @@
 	requires_power = FALSE
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_LZ
+	is_landing_zone = TRUE
 
 /area/varadero/exterior/lz1_console/two
 	name = "New Varadero - Palm Airfield"
@@ -98,19 +99,24 @@
 	icon_state = "lz1"
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_LZ
+	is_landing_zone = TRUE
 
 /area/varadero/exterior/lz2_near
 	name = "New Varadero - Palm Airfield"
 	icon_state = "lz2"
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_LZ
+	is_landing_zone = TRUE
 
 /area/varadero/exterior/pontoon_beach
 	name = "New Varadero - Rockabilly Beach"
 	icon_state = "varadero0"
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_JUNGLE
 
+/area/varadero/exterior/pontoon_beach/lz
+	is_landing_zone = TRUE
+
 /area/varadero/exterior/eastbeach
 	name = "New Varadero - East Beach"
 	is_resin_allowed = FALSE
@@ -157,6 +163,7 @@
 	is_resin_allowed = FALSE
 	minimap_color = MINIMAP_AREA_JUNGLE
 	sound_environment = SOUND_ENVIRONMENT_ROOM
+	is_landing_zone = TRUE
 
 /area/varadero/interior/cargo
 	name = "New Varadero - Cargo"