[MIRROR] Reduce Lists Memory usage, update CI (#10929)

.github/actions/restore_or_install_byond/action.yml

@@ -0,0 +1,51 @@
+# This action attempts to restore BYOND from a cache, or to install it otherwise.
+name: Restore or Install BYOND
+description: Attempts to restore a specified BYOND version from cache; if it can't, it installs it.
+
+inputs:
+  major:
+    description: "The major BYOND version to install. Defaults to the BYOND_MAJOR specified in `dependencies.sh`."
+    required: false
+    type: string
+  minor:
+    description: "The minor BYOND version to install. Defaults to the BYOND_MINOR specified in `dependencies.sh`."
+    required: false
+    type: string
+
+runs:
+  using: composite
+  steps:
+    - name: Configure BYOND version from inputs
+      if: ${{ inputs.major }}
+      shell: bash
+      run: |
+        echo "BYOND_MAJOR=${{ inputs.major }}" >> $GITHUB_ENV
+        echo "BYOND_MINOR=${{ inputs.minor }}" >> $GITHUB_ENV
+    - name: Configure BYOND version from dependencies.sh
+      if: ${{ !inputs.major }}
+      shell: bash
+      run: |
+        source dependencies.sh
+        echo "BYOND_MAJOR=$BYOND_MAJOR" >> $GITHUB_ENV
+        echo "BYOND_MINOR=$BYOND_MINOR" >> $GITHUB_ENV
+
+    # The use of `actions/cache/restore` and `actions/cache/save` here is deliberate, as we want to
+    # save the BYOND install to a cache as early as possible. If we used just `actions/cache`, it
+    # would only attempt to save the cache at the end of a job. This ensures that if a workflow run
+    # is cancelled, we already have a cache to restore from.
+    - name: Restore BYOND cache
+      id: restore_byond_cache
+      uses: actions/cache/restore@v4
+      with:
+        path: ~/BYOND
+        key: ${{ runner.os }}-byond-${{ env.BYOND_MAJOR }}-${{ env.BYOND_MINOR }}
+    - name: Install BYOND
+      if: ${{ !steps.restore_byond_cache.outputs.cache-hit }}
+      shell: bash
+      run: bash tools/ci/install_byond.sh
+    - name: Save BYOND cache
+      if: ${{ !steps.restore_byond_cache.outputs.cache-hit }}
+      uses: actions/cache/save@v4
+      with:
+        path: ~/BYOND
+        key: ${{ steps.restore_byond_cache.outputs.cache-primary-key }}

.github/actions/setup_node/action.yml

@@ -0,0 +1,26 @@
+# This action is a wrapper around `actions/setup-node`, to use the version specified in
+# `dependencies.sh`.
+name: Setup Node
+description: Install Node using the version specified in `dependencies.sh`; additionally, restores the Yarn cache if one exists
+
+inputs:
+  restore-yarn-cache:
+    description: 'If `true`, restores the Yarn cache alongside installing node.'
+    required: false
+    type: boolean
+    default: false
+
+runs:
+  using: composite
+  steps:
+    - name: Configure Node version
+      shell: bash
+      run: |
+        source dependencies.sh
+        echo "NODE_VERSION_REQUIRED=$NODE_VERSION_LTS" >> $GITHUB_ENV
+    - name: Install Node
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ env.NODE_VERSION_REQUIRED }}
+        cache: ${{ fromJSON(inputs.restore-yarn-cache) && 'yarn' || '' }}
+        cache-dependency-path: ${{ fromJSON(inputs.restore-yarn-cache) && 'tgui/yarn.lock' || '' }}

.github/workflows/ci.yml

@@ -20,23 +20,10 @@ jobs:
         with:
             fetch-depth: 0
       # Caches
-      - name: Ensure +x on CI directory
+      - name: Setup Node
-        run: |
+        uses: ./.github/actions/setup_node
-          chmod -R +x ./tools/ci
-      - name: Restore Yarn cache
-        uses: actions/cache@v4
         with:
-          path: tgui/.yarn/cache
+          restore-yarn-cache: true
-          key: ${{ runner.os }}-yarn-${{ hashFiles('tgui/yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
-      - name: Restore Node cache
-        uses: actions/cache@v4
-        with:
-          path: ~/.nvm
-          key: ${{ runner.os }}-node-${{ hashFiles('dependencies.sh') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
       - name: Restore Bootstrap cache
         uses: actions/cache@v4
         with:
@@ -60,7 +47,6 @@ jobs:
       - name: Install Tools
         run: |
           pip3 install setuptools
-          bash tools/ci/install_build_deps.sh
           bash tools/ci/install_ripgrep.sh
           bash tools/ci/install_spaceman_dmm.sh dmm-tools
           tools/bootstrap/python -c ''
@@ -139,24 +125,21 @@ jobs:
       - name: Ensure +x on CI directory
         run: |
           chmod -R +x ./tools/ci
-      - name: Restore BYOND Cache
+      - name: Restore BYOND from Cache
-        uses: actions/cache@v4
+        uses: ./.github/actions/restore_or_install_byond
         with:
-          path: $HOME/byond
+          major: ${{ inputs.major }}
-          key: ${{ runner.os }}-byond
+          minor: ${{ inputs.minor }}
       - name: Install RUST_G Dependencies
         run: |
           sudo dpkg --add-architecture i386
           sudo apt update || true
-          sudo apt install gcc-multilib
           sudo apt install zlib1g-dev:i386
           ldd librust_g.so
           ldd libbapi_dmm_reader.so
           ldd libverdigris.so
       - name: Unit Tests
-        run: |
+        run: tools/ci/compile_and_run.sh
-          tools/ci/install_byond.sh
-          tools/ci/compile_and_run.sh
         env:
           EXTRA_ARGS: "-DUNIT_TEST -D${{ matrix.map }}"
           RUN: "1"

code/_onclick/hud/alert.dm

@@ -18,7 +18,7 @@
 		return
 
 	var/obj/screen/alert/alert
-	if(alerts[category])
+	if(LAZYACCESS(alerts, category))
 		alert = alerts[category]
 		if(new_master && new_master != alert.master)
 			WARNING("[src] threw alert [category] with new_master [new_master] while already having that alert with master [alert.master]")
@@ -47,7 +47,7 @@
 		alert.icon_state = "[initial(alert.icon_state)][severity]"
 		alert.severity = severity
 
-	alerts[category] = alert
+	LAZYSET(alerts, category, alert)
 	if(client && hud_used)
 		hud_used.reorganize_alerts()
 	alert.transform = matrix(32, 6, MATRIX_TRANSLATE)
@@ -59,16 +59,16 @@
 	return alert
 
 /mob/proc/alert_timeout(obj/screen/alert/alert, category)
-	if(alert.timeout && alerts[category] == alert && world.time >= alert.timeout)
+	if(alert.timeout && LAZYACCESS(alerts, category) == alert && world.time >= alert.timeout)
 		clear_alert(category)
 
 // Proc to clear an existing alert.
 /mob/proc/clear_alert(category)
-	var/obj/screen/alert/alert = alerts[category]
+	var/obj/screen/alert/alert = LAZYACCESS(alerts, category)
 	if(!alert)
 		return 0
 
-	alerts -= category
+	LAZYREMOVE(alerts, category)
 	if(client && hud_used)
 		hud_used.reorganize_alerts()
 		client.screen -= alert
@@ -434,10 +434,10 @@ so as to remain in compliance with the most up-to-date laws."
 /datum/hud/proc/reorganize_alerts()
 	var/list/alerts = mymob.alerts
 	if(!hud_shown)
-		for(var/i = 1, i <= alerts.len, i++)
+		for(var/i in 1 to length(alerts))
-			mymob.client.screen -= alerts[alerts[i]]
+			mymob?.client?.screen -= alerts[alerts[i]]
-		return 1
+		return TRUE
-	for(var/i = 1, i <= alerts.len, i++)
+	for(var/i in 1 to length(alerts))
 		var/obj/screen/alert/alert = alerts[alerts[i]]
 
 		if(alert.icon_state in cached_icon_states(ui_style))
@@ -467,7 +467,7 @@ so as to remain in compliance with the most up-to-date laws."
 	return 1
 
 /mob
-	var/list/alerts = list() // contains /obj/screen/alert only // On /mob so clientless mobs will throw alerts properly
+	var/list/alerts = null // contains /obj/screen/alert only // On /mob so clientless mobs will throw alerts properly
 
 /obj/screen/alert/Click(location, control, params)
 	if(!usr || !usr.client)

code/_onclick/hud/fullscreen.dm

@@ -1,15 +1,16 @@
 /mob
-	var/list/screens = list()
+	var/list/screens = null
 
 /mob/proc/set_fullscreen(condition, screen_name, screen_type, arg)
 	condition ? overlay_fullscreen(screen_name, screen_type, arg) : clear_fullscreen(screen_name)
 
 /mob/proc/overlay_fullscreen(category, type, severity)
-	var/obj/screen/fullscreen/screen = screens[category]
+	var/obj/screen/fullscreen/screen = LAZYACCESS(screens, category)
 	if (!screen || screen.type != type)
 		// needs to be recreated
 		clear_fullscreen(category, FALSE)
-		screens[category] = screen = new type()
+		screen = new type()
+		LAZYSET(screens, category, screen)
 	else if ((!severity || severity == screen.severity) && (!client || screen.screen_loc != "CENTER-7,CENTER-7" || screen.view == client.view))
 		// doesn't need to be updated
 		return screen
@@ -23,11 +24,11 @@
 	return screen
 
 /mob/proc/clear_fullscreen(category, animated = 10)
-	var/obj/screen/fullscreen/screen = screens[category]
+	var/obj/screen/fullscreen/screen = LAZYACCESS(screens, category)
 	if(!screen)
 		return
 
-	screens -= category
+	LAZYREMOVE(screens, category)
 
 	if(animated)
 		spawn(0)

code/game/machinery/camera/camera.dm

@@ -38,15 +38,13 @@
 
 	var/affected_by_emp_until = 0
 
-	var/client_huds = list()
+	var/client_huds = null
-
-	var/list/camera_computers_using_this = list()
 
 /obj/machinery/camera/Initialize(mapload)
 	wires = new(src)
 	assembly = new(src)
 	assembly.state = 4
-	client_huds |= GLOB.global_hud.whitense
+	LAZYOR(client_huds, GLOB.global_hud.whitense)
 
 	/* // Use this to look for cameras that have the same c_tag.
 	for(var/obj/machinery/camera/C in cameranet.cameras)

code/game/machinery/camera/motion.dm

@@ -1,5 +1,5 @@
 /obj/machinery/camera
-	var/list/motionTargets = list()
+	var/list/motionTargets = null
 	var/detectTime = 0
 	var/area/ai_monitored/area_motion = null
 	var/alarm_delay = 100 // Don't forget, there's another 10 seconds in queueAlarm()
@@ -29,13 +29,13 @@
 	if (detectTime == 0)
 		detectTime = world.time // start the clock
 	if (!(target in motionTargets))
-		motionTargets += target
+		LAZYADD(motionTargets, target)
 	return 1
 
 /obj/machinery/camera/proc/lostTarget(var/mob/target)
 	if (target in motionTargets)
-		motionTargets -= target
+		LAZYREMOVE(motionTargets, target)
-	if (motionTargets.len == 0)
+	if (LAZYLEN(motionTargets) == 0)
 		cancelAlarm()
 
 /obj/machinery/camera/proc/cancelAlarm()

code/game/objects/items.dm

@@ -112,7 +112,7 @@
 	var/climbing_delay = 1 //If rock_climbing, lower better.
 	var/digestable = TRUE
 	var/item_tf_spawn_allowed = FALSE
-	var/list/ckeys_allowed_itemspawn = list()
+	var/list/ckeys_allowed_itemspawn = null
 
 /obj/item/Initialize(mapload)
 	. = ..()

code/game/objects/items/devices/ai_detector.dm

@@ -49,16 +49,6 @@
 	if(!T)
 		return PROXIMITY_OFF_CAMERANET
 
-	// Security is also a concern, so we need to see if any cameras are in use.
-	// Note that this will trigger upon the security console being used, regardless if someone is actually watching,
-	// because there isn't a nice way to test if someone is actually looking.  Probably better that way too.
-	var/list/our_local_area = range(range_alert, T)
-	for(var/obj/machinery/camera/C in our_local_area)
-		if(C.camera_computers_using_this.len) // Only check cameras actively being used.
-			var/list/their_local_area = C.can_see(range_alert)
-			if(T in their_local_area)
-				return PROXIMITY_ON_SCREEN
-
 	// Now for the somewhat harder AI cameranet checks.
 
 	// Check if we are even on the cameranet.

code/game/objects/items/devices/communicator/communicator.dm

@@ -451,8 +451,8 @@ var/global/list/obj/item/communicator/all_communicators = list() //Don't change
 
 /obj/machinery/camera/communicator/Initialize(mapload)
 	. = ..()
-	client_huds |= GLOB.global_hud.whitense
+	LAZYOR(client_huds, GLOB.global_hud.whitense)
-	client_huds |= GLOB.global_hud.darkMask
+	LAZYOR(client_huds, GLOB.global_hud.darkMask)
 
 //It's the 26th century. We should have smart watches by now.
 /obj/item/communicator/watch

code/game/turfs/flooring/flooring.dm

@@ -44,10 +44,8 @@ var/list/flooring_types
 	var/flags
 	var/can_paint
 	var/can_engrave = FALSE
-	var/list/footstep_sounds = list() // key=species name, value = list of sounds,
-									  // For instance, footstep_sounds = list("key" = list(sound.ogg))
 	var/is_plating = FALSE
-	var/list/flooring_cache = list() // Cached overlays for our edges and corners and junk
+	var/list/flooring_cache = null // Cached overlays for our edges and corners and junk
 
 	//Plating types, can be overridden
 	var/plating_type = null
@@ -73,8 +71,8 @@ var/list/flooring_types
 
 	//How we smooth with other flooring
 	var/floor_smooth = SMOOTH_NONE
-	var/list/flooring_whitelist = list() //Smooth with nothing except the contents of this list
+	var/list/flooring_whitelist = null //Smooth with nothing except the contents of this list
-	var/list/flooring_blacklist = list() //Smooth with everything except the contents of this list
+	var/list/flooring_blacklist = null //Smooth with everything except the contents of this list
 
 	//How we smooth with walls
 	var/wall_smooth = SMOOTH_NONE
@@ -112,8 +110,8 @@ var/list/flooring_types
 
 	*/
 	var/smooth_movable_atom = SMOOTH_NONE
-	var/list/movable_atom_whitelist = list()
+	var/list/movable_atom_whitelist = null
-	var/list/movable_atom_blacklist = list()
+	var/list/movable_atom_blacklist = null
 
 	var/check_season = FALSE	//VOREStation Addition
 
@@ -121,11 +119,11 @@ var/list/flooring_types
 	return plating_type
 
 /decl/flooring/proc/get_flooring_overlay(var/cache_key, var/icon_base, var/icon_dir = 0, var/layer = BUILTIN_DECAL_LAYER)
-	if(!flooring_cache[cache_key])
+	if(!LAZYACCESS(flooring_cache, cache_key))
 		var/image/I = image(icon = icon, icon_state = icon_base, dir = icon_dir)
 		I.layer = layer
-		flooring_cache[cache_key] = I
+		LAZYSET(flooring_cache, cache_key, I)
-	return flooring_cache[cache_key]
+	return LAZYACCESS(flooring_cache, cache_key)
 
 /decl/flooring/grass
 	name = "grass"
@@ -136,11 +134,6 @@ var/list/flooring_types
 	damage_temperature = T0C+80
 	flags = TURF_HAS_EDGES | TURF_HAS_CORNERS | TURF_REMOVE_SHOVEL
 	build_type = /obj/item/stack/tile/grass
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/grass1.ogg',
-		'sound/effects/footstep/grass2.ogg',
-		'sound/effects/footstep/grass3.ogg',
-		'sound/effects/footstep/grass4.ogg'))
 
 /decl/flooring/grass/sif // Subtype for Sif's grass.
 	name = "growth"
@@ -148,16 +141,7 @@ var/list/flooring_types
 	flags = 0
 	icon = 'icons/turf/outdoors.dmi'
 	icon_base = "grass_sif"
-	build_type = /obj/item/stack/tile/grass/sif
+	build_type = null
-	has_base_range = 1
-
-/decl/flooring/grass/sif/forest
-	name = "thick growth"
-	desc = "A natural moss that has adapted to the sheer cold climate."
-	flags = TURF_REMOVE_SHOVEL
-	icon = 'icons/turf/outdoors.dmi'
-	icon_base = "grass_sif_dark"
-	build_type = /obj/item/stack/tile/grass/sif/forest
 	has_base_range = 1
 
 //CHOMPedit: sif/forest decl. If this ends up upstream just accept the upstream version.
@@ -176,22 +160,12 @@ var/list/flooring_types
 	desc = "Water is wet, gosh, who knew!"
 	icon = 'icons/turf/outdoors.dmi'
 	icon_base = "seashallow"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/water1.ogg',
-		'sound/effects/footstep/water2.ogg',
-		'sound/effects/footstep/water3.ogg',
-		'sound/effects/footstep/water4.ogg'))
 
 /decl/flooring/sand
 	name = "sand"
 	desc = "I don't like sand. It's coarse and rough and irritating and it gets everywhere."
 	icon = 'icons/misc/beach.dmi'
 	icon_base = "sand"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/HeavySand1.ogg',
-		'sound/effects/footstep/HeavySand2.ogg',
-		'sound/effects/footstep/HeavySand3.ogg',
-		'sound/effects/footstep/HeavySand4.ogg'))
 
 /decl/flooring/sand/desert // Subtype of sand, desert.
 	name = "desert"
@@ -204,22 +178,12 @@ var/list/flooring_types
 	desc = "Wet and fragrant mud, bane of the freshly mopped floor."
 	icon = 'icons/turf/outdoors.dmi'
 	icon_base = "mud_dark"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/mud1.ogg',
-		'sound/effects/footstep/mud2.ogg',
-		'sound/effects/footstep/mud3.ogg',
-		'sound/effects/footstep/mud4.ogg'))
 
 /decl/flooring/rock
 	name = "rocks"
 	desc = "Hard as a rock."
 	icon = 'icons/turf/outdoors.dmi'
 	icon_base = "rock"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/LightStone1.ogg',
-		'sound/effects/footstep/LightStone2.ogg',
-		'sound/effects/footstep/LightStone3.ogg',
-		'sound/effects/footstep/LightStone4.ogg'))
 
 /decl/flooring/asteroid
 	name = "coarse sand"
@@ -228,12 +192,6 @@ var/list/flooring_types
 	icon_base = "asteroid"
 	flags = TURF_REMOVE_SHOVEL | TURF_ACID_IMMUNE
 	build_type = null
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/asteroid1.ogg',
-		'sound/effects/footstep/asteroid2.ogg',
-		'sound/effects/footstep/asteroid3.ogg',
-		'sound/effects/footstep/asteroid4.ogg',
-		'sound/effects/footstep/asteroid5.ogg'))
 
 /decl/flooring/dirt
 	name = "soil"
@@ -242,28 +200,12 @@ var/list/flooring_types
 	icon_base = "dirt-dark"
 	flags = TURF_REMOVE_SHOVEL
 	build_type = null
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/asteroid1.ogg',
-		'sound/effects/footstep/asteroid2.ogg',
-		'sound/effects/footstep/asteroid3.ogg',
-		'sound/effects/footstep/asteroid4.ogg',
-		'sound/effects/footstep/asteroid5.ogg',
-		'sound/effects/footstep/MedDirt1.ogg',
-		'sound/effects/footstep/MedDirt2.ogg',
-		'sound/effects/footstep/MedDirt3.ogg',
-		'sound/effects/footstep/MedDirt4.ogg',))
 
 /decl/flooring/snow
 	name = "snow"
 	desc = "A layer of many tiny bits of frozen water. It's hard to tell how deep it is."
 	icon = 'icons/turf/outdoors.dmi'
 	icon_base = "snow"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/snow1.ogg',
-		'sound/effects/footstep/snow2.ogg',
-		'sound/effects/footstep/snow3.ogg',
-		'sound/effects/footstep/snow4.ogg',
-		'sound/effects/footstep/snow5.ogg'))
 
 /decl/flooring/snow/fake
 		desc = "A coating of fake snow, looks surprisingly realistic, though not as cold as the real thing."
@@ -305,12 +247,6 @@ var/list/flooring_types
 	can_paint = TRUE //ChompEDIT, allow painting carpets
 	damage_temperature = T0C+200
 	flags = TURF_HAS_EDGES | TURF_HAS_CORNERS | TURF_REMOVE_CROWBAR | TURF_CAN_BURN
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/carpet1.ogg',
-		'sound/effects/footstep/carpet2.ogg',
-		'sound/effects/footstep/carpet3.ogg',
-		'sound/effects/footstep/carpet4.ogg',
-		'sound/effects/footstep/carpet5.ogg'))
 
 /decl/flooring/carpet/bcarpet
 	name = "black carpet"
@@ -407,12 +343,6 @@ var/list/flooring_types
 	build_type = /obj/item/stack/tile/floor
 	can_paint = 1
 	can_engrave = TRUE
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/floor1.ogg',
-		'sound/effects/footstep/floor2.ogg',
-		'sound/effects/footstep/floor3.ogg',
-		'sound/effects/footstep/floor4.ogg',
-		'sound/effects/footstep/floor5.ogg'))
 
 /decl/flooring/tiling/tech
 	desc = "Metal floor tiles with a corrugated anti-slip texture."
@@ -550,12 +480,6 @@ var/list/flooring_types
 	descriptor = "planks"
 	build_type = /obj/item/stack/tile/wood
 	flags = TURF_CAN_BREAK | TURF_REMOVE_CROWBAR | TURF_REMOVE_SCREWDRIVER
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/wood1.ogg',
-		'sound/effects/footstep/wood2.ogg',
-		'sound/effects/footstep/wood3.ogg',
-		'sound/effects/footstep/wood4.ogg',
-		'sound/effects/footstep/wood5.ogg'))
 
 /decl/flooring/wood/sif
 	desc = "Polished wood planks made from sivian wood."
@@ -600,12 +524,6 @@ var/list/flooring_types
 	apply_thermal_conductivity = 0.025
 	apply_heat_capacity = 325000
 	can_paint = 1
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/hull1.ogg',
-		'sound/effects/footstep/hull2.ogg',
-		'sound/effects/footstep/hull3.ogg',
-		'sound/effects/footstep/hull4.ogg',
-		'sound/effects/footstep/hull5.ogg'))
 
 /decl/flooring/reinforced/circuit
 	name = "processing strata"
@@ -636,10 +554,6 @@ var/list/flooring_types
 	icon_base = "lava"
 	is_plating = TRUE
 	flags = TURF_ACID_IMMUNE
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/lava1.ogg',
-		'sound/effects/footstep/lava2.ogg',
-		'sound/effects/footstep/lava3.ogg'))
 
 /decl/flooring/concrete
 	name = "concrete"

code/game/turfs/flooring/flooring_vr.dm

@@ -17,12 +17,6 @@
 	desc = "This slick flesh ripples and squishes under your touch"
 	icon = 'icons/turf/stomach_vr.dmi'
 	icon_base = "flesh_floor"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/mud1.ogg',
-		'sound/effects/footstep/mud2.ogg',
-		'sound/effects/footstep/mud3.ogg',
-		'sound/effects/footstep/mud4.ogg'
-		))
 
 /decl/flooring/grass/outdoors
 	flags = 0
@@ -80,12 +74,6 @@
 	plating_type = /decl/flooring/eris_plating/under
 	can_paint = 1
 	can_engrave = TRUE
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/floor1.ogg',
-		'sound/effects/footstep/floor2.ogg',
-		'sound/effects/footstep/floor3.ogg',
-		'sound/effects/footstep/floor4.ogg',
-		'sound/effects/footstep/floor5.ogg'))
 
 /turf/simulated/floor/tiled/milspec
 	name = "milspec floor"

code/game/turfs/simulated/floor_icon.dm

@@ -1,5 +1,3 @@
-var/list/flooring_cache = list()
-
 var/image/no_ceiling_image = null
 
 /hook/startup/proc/setup_no_ceiling_image()
@@ -182,7 +180,7 @@ var/image/no_ceiling_image = null
 							break
 				else if(floor_smooth == SMOOTH_BLACKLIST)
 					is_linked = TRUE //Default to true for the blacklist, then make it false if a match comes up
-					for (var/v in flooring_whitelist)
+					for (var/v in flooring_blacklist)
 						if (istype(t.flooring, v))
 							//Found a match on the list
 							is_linked = FALSE
@@ -278,10 +276,3 @@ var/image/no_ceiling_image = null
 							is_linked = FALSE
 
 	return is_linked
-
-/turf/simulated/floor/proc/get_flooring_overlay(var/cache_key, var/icon_base, var/icon_dir = 0)
-	if(!flooring_cache[cache_key])
-		var/image/I = image(icon = flooring.icon, icon_state = icon_base, dir = icon_dir)
-		I.layer = layer
-		flooring_cache[cache_key] = I
-	return flooring_cache[cache_key]

code/game/turfs/simulated/floor_types_eris.dm

@@ -1014,7 +1014,6 @@
 	health = 100
 
 	floor_smooth = SMOOTH_BLACKLIST
-	flooring_blacklist = list(/decl/flooring/reinforced/plating/under,/decl/flooring/reinforced/plating/hull) //Smooth with everything except the contents of this list
 	smooth_movable_atom = SMOOTH_GREYLIST
 	movable_atom_blacklist = list(list(/obj, list("density" = TRUE, "anchored" = TRUE), 1))
 	movable_atom_whitelist = list(list(/obj/machinery/door/airlock, list(), 2))

code/game/turfs/simulated/outdoors/ironsand_vr.dm

@@ -11,16 +11,6 @@
 	desc = "Red and gritty."
 	icon = 'icons/turf/flooring/ironsand_vr.dmi'
 	icon_base = "ironsand1"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/asteroid1.ogg',
-		'sound/effects/footstep/asteroid2.ogg',
-		'sound/effects/footstep/asteroid3.ogg',
-		'sound/effects/footstep/asteroid4.ogg',
-		'sound/effects/footstep/asteroid5.ogg',
-		'sound/effects/footstep/MedDirt1.ogg',
-		'sound/effects/footstep/MedDirt2.ogg',
-		'sound/effects/footstep/MedDirt3.ogg',
-		'sound/effects/footstep/MedDirt4.ogg'))
 
 /turf/simulated/floor/outdoors/ironsand/Initialize(mapload)
 	var/possiblesands = list(

code/game/turfs/unsimulated/beach.dm

@@ -66,7 +66,3 @@
 	desc = "Deep Ocean Water"
 	icon = 'icons/misc/beach.dmi'
 	icon_base = "seadeep"
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/bubbles3.ogg', // No I don't get why it's named 3/4/5 either. Whatever.
-		'sound/effects/footstep/bubbles4.ogg',
-		'sound/effects/footstep/bubbles5.ogg'))

code/modules/mob/living/carbon/human/life.dm

@@ -1427,7 +1427,8 @@
 
 	if(istype(client.eye,/obj/machinery/camera))
 		var/obj/machinery/camera/cam = client.eye
-		client.screen |= cam.client_huds
+		if(LAZYLEN(cam.client_huds))
+			client.screen |= cam.client_huds
 
 	if(stat == DEAD) //Dead
 		if(!druggy)		see_invisible = SEE_INVISIBLE_LEVEL_TWO

code/modules/mob/living/simple_mob/subtypes/animal/alien animals/stardog.dm

@@ -519,13 +519,6 @@
 
 	can_paint = TRUE
 
-	footstep_sounds = list("human" = list(
-		'sound/effects/footstep/carpet1.ogg',
-		'sound/effects/footstep/carpet2.ogg',
-		'sound/effects/footstep/carpet3.ogg',
-		'sound/effects/footstep/carpet4.ogg',
-		'sound/effects/footstep/carpet5.ogg'))
-
 /obj/structure/flora/tree/fur
 	name = "tall fur"
 	desc = "Tall stalks of fur block your path! Someone needs a trim!"