From 2c9a9d90acadd0a0e88bf34eabec07c660b63208 Mon Sep 17 00:00:00 2001
From: Qustinnus <Floydje123@hotmail.com>
Date: Wed, 6 May 2020 14:03:10 +0200
Subject: [PATCH] Adds glass floors (That work with multi-z) (#50831)

---
 _maps/map_files/debug/multiz.dmm          |  16 ++---
 _maps/multiz_debug.json                   |   2 +-
 code/__DEFINES/is_helpers.dm              |   4 +-
 code/game/atoms.dm                        |   2 +-
 code/game/objects/structures/stairs.dm    |  14 ++---
 code/game/turfs/open/openspace.dm         |  68 ++++++--------------
 code/game/turfs/open/transparent.dm       |  73 ++++++++++++++++++++++
 code/modules/awaymissions/away_props.dm   |   2 +-
 code/modules/mob/living/living.dm         |   2 +-
 code/modules/photography/camera/camera.dm |   2 +-
 icons/turf/floors/glass.dmi               | Bin 0 -> 3463 bytes
 icons/turf/floors/reinf_glass.dmi         | Bin 0 -> 2961 bytes
 tgstation.dme                             |   1 +
 13 files changed, 115 insertions(+), 71 deletions(-)
 create mode 100644 code/game/turfs/open/transparent.dm
 create mode 100644 icons/turf/floors/glass.dmi
 create mode 100644 icons/turf/floors/reinf_glass.dmi

diff --git a/_maps/map_files/debug/multiz.dmm b/_maps/map_files/debug/multiz.dmm
index 5b51661c0e1..fcc49f6c7e0 100644
--- a/_maps/map_files/debug/multiz.dmm
+++ b/_maps/map_files/debug/multiz.dmm
@@ -103,7 +103,7 @@
 /turf/open/floor/plasteel,
 /area/engine/gravity_generator)
 "au" = (
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/space)
 "av" = (
 /obj/structure/stairs/north,
@@ -1023,7 +1023,7 @@
 	},
 /area/hallway/secondary/service)
 "eC" = (
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/maintenance/department/bridge)
 "eD" = (
 /obj/effect/turf_decal/stripes/asteroid/line{
@@ -1187,7 +1187,7 @@
 /turf/open/floor/plating,
 /area/construction)
 "iu" = (
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/hallway/secondary/service)
 "iH" = (
 /obj/effect/turf_decal/stripes/white/line,
@@ -1263,7 +1263,7 @@
 	},
 /area/hallway/secondary/service)
 "nx" = (
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/space/nearstation)
 "nz" = (
 /obj/machinery/light{
@@ -1307,7 +1307,7 @@
 /turf/open/floor/plating,
 /area/maintenance/department/bridge)
 "qo" = (
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/engine/storage)
 "qx" = (
 /obj/structure/railing/corner{
@@ -1330,7 +1330,7 @@
 /obj/machinery/light{
 	dir = 8
 	},
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/engine/storage)
 "rN" = (
 /obj/machinery/atmospherics/pipe/manifold/supply/hidden{
@@ -1498,7 +1498,7 @@
 /area/construction)
 "Bk" = (
 /obj/structure/grille,
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/space/nearstation)
 "Bm" = (
 /obj/machinery/light{
@@ -1687,7 +1687,7 @@
 "Ob" = (
 /obj/structure/lattice,
 /obj/structure/grille,
-/turf/open/openspace,
+/turf/open/transparent/openspace,
 /area/space/nearstation)
 "Og" = (
 /obj/machinery/airalarm/directional/north,
diff --git a/_maps/multiz_debug.json b/_maps/multiz_debug.json
index e8a474161e7..a1c35541087 100644
--- a/_maps/multiz_debug.json
+++ b/_maps/multiz_debug.json
@@ -2,5 +2,5 @@
     "map_name": "MultiZ Debug",
     "map_path": "map_files/debug",
     "map_file": "multiz.dmm",
-	"traits": [{"Up" : 1, "Linkage" : "Cross"}, {"Up" : 1, "Down" : -1, "Baseturf" : "/turf/open/openspace", "Linkage" : "Cross"}, {"Down" : -1, "Baseturf" : "/turf/open/openspace", "Linkage" : "Cross"}]
+	"traits": [{"Up" : 1, "Linkage" : "Cross"}, {"Up" : 1, "Down" : -1, "Baseturf" : "/turf/open/transparent/openspace", "Linkage" : "Cross"}, {"Down" : -1, "Baseturf" : "/turf/open/transparent/openspace", "Linkage" : "Cross"}]
 	}
diff --git a/code/__DEFINES/is_helpers.dm b/code/__DEFINES/is_helpers.dm
index 4f22467d07f..54cef8a2582 100644
--- a/code/__DEFINES/is_helpers.dm
+++ b/code/__DEFINES/is_helpers.dm
@@ -14,7 +14,7 @@ GLOBAL_LIST_INIT(turfs_without_ground, typecacheof(list(
 	/turf/open/chasm,
 	/turf/open/lava,
 	/turf/open/water,
-	/turf/open/openspace
+	/turf/open/transparent/openspace
 	)))
 
 #define isgroundlessturf(A) (is_type_in_typecache(A, GLOB.turfs_without_ground))
@@ -41,7 +41,7 @@ GLOBAL_LIST_INIT(turfs_without_ground, typecacheof(list(
 
 #define isplatingturf(A) (istype(A, /turf/open/floor/plating))
 
-#define isopenspace(A) (istype(A, /turf/open/openspace))
+#define istransparentturf(A) (istype(A, /turf/open/transparent))
 
 //Mobs
 #define isliving(A) (istype(A, /mob/living))
diff --git a/code/game/atoms.dm b/code/game/atoms.dm
index 99a742fde4a..df1931cc805 100644
--- a/code/game/atoms.dm
+++ b/code/game/atoms.dm
@@ -1318,7 +1318,7 @@
 
 	if(isspaceturf(T)) // Turf never has gravity
 		return FALSE
-	if(istype(T, /turf/open/openspace)) //openspace in a space area doesn't get gravity
+	if(istype(T, /turf/open/transparent/openspace)) //openspace in a space area doesn't get gravity
 		if(istype(get_area(T), /area/space))
 			return FALSE
 
diff --git a/code/game/objects/structures/stairs.dm b/code/game/objects/structures/stairs.dm
index f3bd1a18303..fb3bf90ac75 100644
--- a/code/game/objects/structures/stairs.dm
+++ b/code/game/objects/structures/stairs.dm
@@ -3,7 +3,7 @@
 #define STAIR_TERMINATOR_YES 2
 
 // dir determines the direction of travel to go upwards
-// stairs require /turf/open/openspace as the tile above them to work, unless your stairs have 'force_open_above' set to TRUE
+// stairs require /turf/open/transparent/openspace as the tile above them to work, unless your stairs have 'force_open_above' set to TRUE
 // multiple stair objects can be chained together; the Z level transition will happen on the final stair object in the chain
 
 /obj/structure/stairs
@@ -12,7 +12,7 @@
 	icon_state = "stairs"
 	anchored = TRUE
 
-	var/force_open_above = FALSE // replaces the turf above this stair obj with /turf/open/openspace
+	var/force_open_above = FALSE // replaces the turf above this stair obj with /turf/open/transparent/openspace
 	var/terminator_mode = STAIR_TERMINATOR_AUTOMATIC
 	var/turf/listeningTo
 
@@ -107,20 +107,20 @@
 /obj/structure/stairs/proc/build_signal_listener()
 	if(listeningTo)
 		UnregisterSignal(listeningTo, COMSIG_TURF_MULTIZ_NEW)
-	var/turf/open/openspace/T = get_step_multiz(get_turf(src), UP)
+	var/turf/open/transparent/openspace/T = get_step_multiz(get_turf(src), UP)
 	RegisterSignal(T, COMSIG_TURF_MULTIZ_NEW, .proc/on_multiz_new)
 	listeningTo = T
 
 /obj/structure/stairs/proc/force_open_above()
-	var/turf/open/openspace/T = get_step_multiz(get_turf(src), UP)
+	var/turf/open/transparent/openspace/T = get_step_multiz(get_turf(src), UP)
 	if(T && !istype(T))
-		T.ChangeTurf(/turf/open/openspace, flags = CHANGETURF_INHERIT_AIR)
+		T.ChangeTurf(/turf/open/transparent/openspace, flags = CHANGETURF_INHERIT_AIR)
 
 /obj/structure/stairs/proc/on_multiz_new(turf/source, dir)
 	if(dir == UP)
-		var/turf/open/openspace/T = get_step_multiz(get_turf(src), UP)
+		var/turf/open/transparent/openspace/T = get_step_multiz(get_turf(src), UP)
 		if(T && !istype(T))
-			T.ChangeTurf(/turf/open/openspace, flags = CHANGETURF_INHERIT_AIR)
+			T.ChangeTurf(/turf/open/transparent/openspace, flags = CHANGETURF_INHERIT_AIR)
 
 /obj/structure/stairs/intercept_zImpact(atom/movable/AM, levels = 1)
 	. = ..()
diff --git a/code/game/turfs/open/openspace.dm b/code/game/turfs/open/openspace.dm
index 6d2a5c37211..12fbc97785a 100644
--- a/code/game/turfs/open/openspace.dm
+++ b/code/game/turfs/open/openspace.dm
@@ -11,77 +11,47 @@ GLOBAL_DATUM_INIT(openspace_backdrop_one_for_all, /atom/movable/openspace_backdr
 	mouse_opacity 	= MOUSE_OPACITY_TRANSPARENT
 	layer           = SPLASHSCREEN_LAYER
 
-/turf/open/openspace
+/turf/open/transparent/openspace
 	name = "open space"
 	desc = "Watch your step!"
 	icon_state = "transparent"
-	baseturfs = /turf/open/openspace
+	baseturfs = /turf/open/transparent/openspace
 	CanAtmosPassVertical = ATMOS_PASS_YES
 	//mouse_opacity = MOUSE_OPACITY_TRANSPARENT
 	var/can_cover_up = TRUE
 	var/can_build_on = TRUE
 
-	intact = 0
-/turf/open/openspace/airless
+/turf/open/transparent/openspace/airless
 	initial_gas_mix = AIRLESS_ATMOS
 
-/turf/open/openspace/debug/update_multiz()
+/turf/open/transparent/openspace/debug/update_multiz()
 	..()
 	return TRUE
 
-/turf/open/openspace/Initialize() // handle plane and layer here so that they don't cover other obs/turfs in Dream Maker
+///No bottom level for openspace.
+/turf/open/transparent/openspace/show_bottom_level()
+	return FALSE
+
+/turf/open/transparent/openspace/Initialize() // handle plane and layer here so that they don't cover other obs/turfs in Dream Maker
 	. = ..()
-	plane = OPENSPACE_PLANE
-	layer = OPENSPACE_LAYER
 
 	vis_contents += GLOB.openspace_backdrop_one_for_all //Special grey square for projecting backdrop darkness filter on it.
 
-	return INITIALIZE_HINT_LATELOAD
-
-/turf/open/openspace/LateInitialize()
-	update_multiz(TRUE, TRUE)
-
-/turf/open/openspace/Destroy()
-	vis_contents.len = 0
-	return ..()
-
-/turf/open/openspace/can_have_cabling()
+/turf/open/transparent/openspace/can_have_cabling()
 	if(locate(/obj/structure/lattice/catwalk, src))
 		return TRUE
 	return FALSE
 
-/turf/open/openspace/update_multiz(prune_on_fail = FALSE, init = FALSE)
-	. = ..()
-	var/turf/T = below()
-	if(!T)
-		vis_contents.len = 0
-		if(prune_on_fail)
-			ChangeTurf(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
-		return FALSE
-	if(init)
-		vis_contents += T
+/turf/open/transparent/openspace/zAirIn()
 	return TRUE
 
-/turf/open/openspace/multiz_turf_del(turf/T, dir)
-	if(dir != DOWN)
-		return
-	update_multiz()
-
-/turf/open/openspace/multiz_turf_new(turf/T, dir)
-	if(dir != DOWN)
-		return
-	update_multiz()
-
-/turf/open/openspace/zAirIn()
+/turf/open/transparent/openspace/zAirOut()
 	return TRUE
 
-/turf/open/openspace/zAirOut()
+/turf/open/transparent/openspace/zPassIn(atom/movable/A, direction, turf/source)
 	return TRUE
 
-/turf/open/openspace/zPassIn(atom/movable/A, direction, turf/source)
-	return TRUE
-
-/turf/open/openspace/zPassOut(atom/movable/A, direction, turf/destination)
+/turf/open/transparent/openspace/zPassOut(atom/movable/A, direction, turf/destination)
 	if(A.anchored)
 		return FALSE
 	for(var/obj/O in contents)
@@ -89,13 +59,13 @@ GLOBAL_DATUM_INIT(openspace_backdrop_one_for_all, /atom/movable/openspace_backdr
 			return FALSE
 	return TRUE
 
-/turf/open/openspace/proc/CanCoverUp()
+/turf/open/transparent/openspace/proc/CanCoverUp()
 	return can_cover_up
 
-/turf/open/openspace/proc/CanBuildHere()
+/turf/open/transparent/openspace/proc/CanBuildHere()
 	return can_build_on
 
-/turf/open/openspace/attackby(obj/item/C, mob/user, params)
+/turf/open/transparent/openspace/attackby(obj/item/C, mob/user, params)
 	..()
 	if(!CanBuildHere())
 		return
@@ -137,7 +107,7 @@ GLOBAL_DATUM_INIT(openspace_backdrop_one_for_all, /atom/movable/openspace_backdr
 		else
 			to_chat(user, "<span class='warning'>The plating is going to need some support! Place metal rods first.</span>")
 
-/turf/open/openspace/rcd_vals(mob/user, obj/item/construction/rcd/the_rcd)
+/turf/open/transparent/openspace/rcd_vals(mob/user, obj/item/construction/rcd/the_rcd)
 	if(!CanBuildHere())
 		return FALSE
 
@@ -150,7 +120,7 @@ GLOBAL_DATUM_INIT(openspace_backdrop_one_for_all, /atom/movable/openspace_backdr
 				return list("mode" = RCD_FLOORWALL, "delay" = 0, "cost" = 3)
 	return FALSE
 
-/turf/open/openspace/rcd_act(mob/user, obj/item/construction/rcd/the_rcd, passed_mode)
+/turf/open/transparent/openspace/rcd_act(mob/user, obj/item/construction/rcd/the_rcd, passed_mode)
 	switch(passed_mode)
 		if(RCD_FLOORWALL)
 			to_chat(user, "<span class='notice'>You build a floor.</span>")
diff --git a/code/game/turfs/open/transparent.dm b/code/game/turfs/open/transparent.dm
new file mode 100644
index 00000000000..334b42e9354
--- /dev/null
+++ b/code/game/turfs/open/transparent.dm
@@ -0,0 +1,73 @@
+/turf/open/transparent
+	baseturfs = /turf/open/transparent/openspace
+	intact = FALSE //this means wires go on top
+
+/turf/open/transparent/Initialize() // handle plane and layer here so that they don't cover other obs/turfs in Dream Maker
+	. = ..()
+	plane = OPENSPACE_PLANE
+	layer = OPENSPACE_LAYER
+
+	return INITIALIZE_HINT_LATELOAD
+
+/turf/open/transparent/LateInitialize()
+	update_multiz(TRUE, TRUE)
+
+/turf/open/transparent/Destroy()
+	vis_contents.len = 0
+	return ..()
+
+/turf/open/transparent/update_multiz(prune_on_fail = FALSE, init = FALSE)
+	. = ..()
+	var/turf/T = below()
+	if(!T)
+		vis_contents.len = 0
+		if(!show_bottom_level() && prune_on_fail) //If we cant show whats below, and we prune on fail, change the turf to plating as a fallback
+			ChangeTurf(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
+		return FALSE
+	if(init)
+		vis_contents += T
+	return TRUE
+
+/turf/open/transparent/multiz_turf_del(turf/T, dir)
+	if(dir != DOWN)
+		return
+	update_multiz()
+
+/turf/open/transparent/multiz_turf_new(turf/T, dir)
+	if(dir != DOWN)
+		return
+	update_multiz()
+
+///Called when there is no real turf below this turf
+/turf/open/transparent/proc/show_bottom_level()
+	var/turf/path = SSmapping.level_trait(z, ZTRAIT_BASETURF) || /turf/open/space
+	if(!ispath(path))
+		path = text2path(path)
+		if(!ispath(path))
+			warning("Z-level [z] has invalid baseturf '[SSmapping.level_trait(z, ZTRAIT_BASETURF)]'")
+			path = /turf/open/space
+	var/mutable_appearance/underlay_appearance = mutable_appearance(initial(path.icon), initial(path.icon_state), layer = TURF_LAYER, plane = PLANE_SPACE)
+	underlays += underlay_appearance
+	return TRUE
+
+
+/turf/open/transparent/glass
+	name = "Glass floor"
+	desc = "Dont jump on it, or do, I'm not your mom."
+	icon = 'icons/turf/floors/glass.dmi'
+	icon_state = "floor_glass"
+	smooth = SMOOTH_MORE
+	canSmoothWith = list(/turf/open/transparent/glass, /turf/open/transparent/glass/reinforced)
+	footstep = FOOTSTEP_PLATING
+	barefootstep = FOOTSTEP_HARD_BAREFOOT
+	clawfootstep = FOOTSTEP_HARD_CLAW
+	heavyfootstep = FOOTSTEP_GENERIC_HEAVY
+
+/turf/open/transparent/glass/Initialize()
+	icon_state = "" //Prevent the normal icon from appearing behind the smooth overlays
+	return ..()
+
+/turf/open/transparent/glass/reinforced
+	name = "Reinforced glass floor"
+	desc = "Do jump on it, it can take it."
+	icon = 'icons/turf/floors/reinf_glass.dmi'
diff --git a/code/modules/awaymissions/away_props.dm b/code/modules/awaymissions/away_props.dm
index fecc17c711a..9a12d14ff2a 100644
--- a/code/modules/awaymissions/away_props.dm
+++ b/code/modules/awaymissions/away_props.dm
@@ -76,7 +76,7 @@
 		toggle()
 
 /obj/structure/pitgrate/proc/update_openspace()
-	var/turf/open/openspace/T = get_turf(src)
+	var/turf/open/transparent/openspace/T = get_turf(src)
 	if(!istype(T))
 		return
 	//Simple way to keep plane conflicts away, could probably be upgraded to something less nuclear with 513
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index 7df2061208e..28ff220fb27 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -1517,7 +1517,7 @@
 	if(!ceiling) //We are at the highest z-level.
 		to_chat(src, "<span class='warning'>You can't see through the ceiling above you.</span>")
 		return
-	else if(!isopenspace(ceiling)) //There is no openspace turf above us.
+	else if(!istransparentturf(ceiling)) //There is no turf we can look through above us
 		to_chat(src, "<span class='warning'>You can't see through the floor above you.</span>")
 		return
 
diff --git a/code/modules/photography/camera/camera.dm b/code/modules/photography/camera/camera.dm
index be8005cfc6a..22cefcd56f3 100644
--- a/code/modules/photography/camera/camera.dm
+++ b/code/modules/photography/camera/camera.dm
@@ -182,7 +182,7 @@
 	var/clone_area = SSmapping.RequestBlockReservation(size_x * 2 + 1, size_y * 2 + 1)
 	for(var/turf/placeholder in block(locate(target_turf.x - size_x, target_turf.y - size_y, target_turf.z), locate(target_turf.x + size_x, target_turf.y + size_y, target_turf.z)))
 		var/turf/T = placeholder
-		while(istype(T, /turf/open/openspace)) //Multi-z photography
+		while(istype(T, /turf/open/transparent/openspace)) //Multi-z photography
 			T = SSmapping.get_turf_below(T)
 			if(!T)
 				break
diff --git a/icons/turf/floors/glass.dmi b/icons/turf/floors/glass.dmi
new file mode 100644
index 0000000000000000000000000000000000000000..adf6f57aaa3428df4c551214d41da17d798d1fa0
GIT binary patch
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diff --git a/icons/turf/floors/reinf_glass.dmi b/icons/turf/floors/reinf_glass.dmi
new file mode 100644
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diff --git a/tgstation.dme b/tgstation.dme
index c558060582e..64fedf0ba99 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -1248,6 +1248,7 @@
 #include "code\game\turfs\open\lava.dm"
 #include "code\game\turfs\open\openspace.dm"
 #include "code\game\turfs\open\river.dm"
+#include "code\game\turfs\open\transparent.dm"
 #include "code\game\turfs\open\water.dm"
 #include "code\game\turfs\open\floor\fancy_floor.dm"
 #include "code\game\turfs\open\floor\hull.dm"