Revert "Revert "Adds glass floors" (#16524)"

This reverts commit 517f5e8304.

code/modules/atmospherics/machinery/atmospherics.dm

@@ -71,10 +71,13 @@ Pipelines + Other Objects -> Pipe network
 // Icons/overlays/underlays
 /obj/machinery/atmospherics/update_icon()
 	var/turf/T = get_turf(loc)
-	if(!T || level == 2 || !T.intact)
-		plane = GAME_PLANE
-	else
+	if(T.transparent_floor)
 		plane = FLOOR_PLANE
+	else
+		if(!T || level == 2 || !T.intact)
+			plane = GAME_PLANE
+		else
+			plane = FLOOR_PLANE
 
 /obj/machinery/atmospherics/proc/update_pipe_image()
 	pipe_image = image(src, loc, layer = ABOVE_HUD_LAYER, dir = dir) //the 20 puts it above Byond's darkness (not its opacity view)
@@ -95,15 +98,18 @@ Pipelines + Other Objects -> Pipe network
 
 /obj/machinery/atmospherics/proc/add_underlay(turf/T, obj/machinery/atmospherics/node, direction, icon_connect_type)
 	if(node)
-		if(T.intact && node.level == 1 && istype(node, /obj/machinery/atmospherics/pipe))
+		if(T.intact && node.level == 1 && istype(node, /obj/machinery/atmospherics/pipe) && !T.transparent_floor)
 			//underlays += SSair.icon_manager.get_atmos_icon("underlay_down", direction, color_cache_name(node))
 			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "down" + icon_connect_type)
 		else
 			//underlays += SSair.icon_manager.get_atmos_icon("underlay_intact", direction, color_cache_name(node))
 			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "intact" + icon_connect_type)
 	else
-		//underlays += SSair.icon_manager.get_atmos_icon("underlay_exposed", direction, pipe_color)
-		underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "exposed" + icon_connect_type)
+		if(T.transparent_floor) //we want to keep pipes under transparent floors connected normally
+			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "intact" + icon_connect_type)
+		else
+			//underlays += SSair.icon_manager.get_atmos_icon("underlay_exposed", direction, pipe_color)
+			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "exposed" + icon_connect_type)
 
 /obj/machinery/atmospherics/proc/update_underlays()
 	if(check_icon_cache())
@@ -166,11 +172,14 @@ Pipelines + Other Objects -> Pipe network
 
 //(De)construction
 /obj/machinery/atmospherics/attackby(obj/item/W, mob/user)
+	var/turf/T = get_turf(src)
 	if(can_unwrench && istype(W, /obj/item/wrench))
-		var/turf/T = get_turf(src)
+		if(T.transparent_floor && istype(src, /obj/machinery/atmospherics/pipe) && layer != GAS_PIPE_VISIBLE_LAYER) //pipes on GAS_PIPE_VISIBLE_LAYER are above the transparent floor and should be interactable
+			to_chat(user, "<span class='danger'>You can't interact with something that's under the floor!</span>")
+			return
 		if(level == 1 && isturf(T) && T.intact)
 			to_chat(user, "<span class='danger'>You must remove the plating first.</span>")
-			return 1
+			return
 		var/datum/gas_mixture/int_air = return_air()
 		var/datum/gas_mixture/env_air = loc.return_air()
 		add_fingerprint(user)
@@ -184,14 +193,14 @@ Pipelines + Other Objects -> Pipe network
 		playsound(src.loc, W.usesound, 50, 1)
 		to_chat(user, "<span class='notice'>You begin to unfasten \the [src]...</span>")
 		if(internal_pressure > 2*ONE_ATMOSPHERE)
-			to_chat(user, "<span class='warning'>As you begin unwrenching \the [src] a gush of air blows in your face... maybe you should reconsider?</span>")
+			to_chat(user, "<span class='warning'>As you begin unwrenching \the [src] a gust of air blows in your face... maybe you should reconsider?</span>")
 			unsafe_wrenching = TRUE //Oh dear oh dear
 
 		if(do_after(user, 40 * W.toolspeed, target = src) && !QDELETED(src))
 			user.visible_message( \
 				"[user] unfastens \the [src].", \
 				"<span class='notice'>You have unfastened \the [src].</span>", \
-				"<span class='italics'>You hear ratchet.</span>")
+				"<span class='italics'>You hear ratcheting.</span>")
 			investigate_log("was <span class='warning'>REMOVED</span> by [key_name(usr)]", "atmos")
 
 			for(var/obj/item/clothing/shoes/magboots/usermagboots in user.get_equipped_items())
@@ -206,6 +215,9 @@ Pipelines + Other Objects -> Pipe network
 					unsafe_pressure_release(user,internal_pressure)
 			deconstruct(TRUE)
 	else
+		if(T.transparent_floor)
+			to_chat(user, "<span class='danger'>You can't interact with something that's under the floor!</span>")
+			return
 		return ..()
 
 //Called when an atmospherics object is unwrenched while having a large pressure difference
@@ -240,7 +252,12 @@ Pipelines + Other Objects -> Pipe network
 	dir = D
 	initialize_directions = P
 	var/turf/T = loc
-	level = T.intact ? 2 : 1
+	if(!T.transparent_floor)
+		level = T.intact ? 2 : 1
+	else
+		level = 2
+		plane = GAME_PLANE
+		layer = GAS_PIPE_VISIBLE_LAYER
 	add_fingerprint(usr)
 	if(!SSair.initialized) //If there's no atmos subsystem, we can't really initialize pipenets
 		SSair.machinery_to_construct.Add(src)
@@ -337,12 +354,15 @@ Pipelines + Other Objects -> Pipe network
 
 /obj/machinery/atmospherics/proc/add_underlay_adapter(turf/T, obj/machinery/atmospherics/node, direction, icon_connect_type) //modified from add_underlay, does not make exposed underlays
 	if(node)
-		if(T.intact && node.level == 1 && istype(node, /obj/machinery/atmospherics/pipe))
+		if(T.intact && node.level == 1 && istype(node, /obj/machinery/atmospherics/pipe) && !T.transparent_floor)
 			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "down" + icon_connect_type)
 		else
 			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "intact" + icon_connect_type)
 	else
-		underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "retracted" + icon_connect_type)
+		if(T.transparent_floor) //we want to keep pipes under transparent floors connected normally
+			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "intact" + icon_connect_type)
+		else
+			underlays += SSair.icon_manager.get_atmos_icon("underlay", direction, color_cache_name(node), "retracted" + icon_connect_type)
 
 /obj/machinery/atmospherics/singularity_pull(S, current_size)
 	if(current_size >= STAGE_FIVE)

code/modules/atmospherics/machinery/datum_icon_manager.dm

@@ -159,9 +159,9 @@
 		var/cache_name = state
 
 		for(var/D in GLOB.cardinal)
-			var/image/I = image(icon('icons/atmos/pipe_underlays.dmi', icon_state = state, dir = D))
+			var/image/I = image(icon('icons/atmos/pipe_underlays.dmi', icon_state = state, dir = D), layer = GAS_PIPE_HIDDEN_LAYER)
 			underlays[cache_name + "[D]"] = I
 			for(var/pipe_color in GLOB.pipe_colors)
-				I = image(icon('icons/atmos/pipe_underlays.dmi', icon_state = state, dir = D))
+				I = image(icon('icons/atmos/pipe_underlays.dmi', icon_state = state, dir = D), layer = GAS_PIPE_HIDDEN_LAYER)
 				I.color = GLOB.pipe_colors[pipe_color]
 				underlays[state + "[D]" + "[GLOB.pipe_colors[pipe_color]]"] = I

code/modules/atmospherics/machinery/pipes/cap.dm

@@ -79,7 +79,8 @@
 				break
 
 	var/turf/T = get_turf(src)			// hide if turf is not intact
-	if(!istype(T)) return
+	if(!istype(T) || T.transparent_floor)
+		return
 	hide(T.intact)
 	update_icon()
 

code/modules/atmospherics/machinery/pipes/manifold.dm

@@ -57,6 +57,8 @@
 					node3 = target
 				break
 	var/turf/T = src.loc			// hide if turf is not intact
+	if(T.transparent_floor)
+		return
 	hide(T.intact)
 	update_icon()
 

code/modules/atmospherics/machinery/pipes/manifold4w.dm

@@ -165,7 +165,8 @@
 				break
 
 	var/turf/T = src.loc			// hide if turf is not intact
-	hide(T.intact)
+	if(!T.transparent_floor)
+		hide(T.intact)
 	update_icon()
 
 /obj/machinery/atmospherics/pipe/manifold4w/visible

code/modules/atmospherics/machinery/pipes/simple/pipe_simple.dm

@@ -68,7 +68,8 @@
 							break
 
 		var/turf/T = loc			// hide if turf is not intact
-		hide(T.intact)
+		if(!T.transparent_floor)
+			hide(T.intact)
 		update_icon()
 
 /obj/machinery/atmospherics/pipe/simple/check_pressure(pressure)