[FEATURE] Decal painter (#27036)

* Add_Decal_Painter

* Seperate TGUI file

* Decal painter DmIcon

* Fix some merge errors

* I don't know why this merge is so incredibly fucked

* Update TGUI bundle

* I swear to god

* Fixes DmIcon

* TGUI bundle build

* Remove implicit var

* Final cleanup

* Add decal_painter sprite

* Update code/game/objects/items/devices/painter/decal_painter.dm

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>
Signed-off-by: Chap <erwin@lombok.demon.nl>

* Add helper proc for deleting all components of a type from a datum

* Added comments to cycle_style

* Elementized decal fixes

* Use the new decal system

* TGUI bundle

---------

Signed-off-by: Chap <erwin@lombok.demon.nl>
Co-authored-by: Adrer <adrermail@gmail.com>
Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>
Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

code/game/objects/effects/decals/turf_decal.dm

@@ -3,11 +3,11 @@
 	icon_state = "warningline"
 	layer = TURF_DECAL_LAYER
 
-/obj/effect/turf_decal/Initialize(mapload)
+/obj/effect/turf_decal/Initialize(mapload, _dir)
 	..()
 	. = INITIALIZE_HINT_QDEL
 	var/turf/T = loc
 	if(!istype(T)) //you know this will happen somehow
 		CRASH("Turf decal initialized in an object/nullspace")
 
-	T.AddElement(/datum/element/decal, icon, icon_state, dir, layer, alpha, color, FALSE, null)
+	T.AddElement(/datum/element/decal, icon, icon_state, _dir || dir, layer, alpha, color, FALSE, null)

code/game/objects/effects/decals/turfdecals/markings.dm

@@ -199,9 +199,6 @@
 /obj/effect/turf_decal/siding/box
 	icon_state = "siding_box"
 
-/obj/effect/turf_decal/raven_ship_sign
-	icon_state = "RAVEN2"
-
 /obj/effect/turf_decal/raven/one
 	icon_state = "RAVEN1"
 

code/game/objects/effects/decals/turfdecals/weather_decals.dm

@@ -2,6 +2,11 @@
 	name = "sandy floor"
 	icon_state = "sandyfloor"
 
+/obj/effect/turf_decal/weather/snow
+	name = "snowy floor"
+	icon = 'icons/turf/snow.dmi'
+	icon_state = "snow"
+
 /obj/effect/turf_decal/weather/snow/corner
 	name = "snow corner piece"
 	icon = 'icons/turf/snow.dmi'

code/game/objects/items/devices/painter/decal_painter.dm

@@ -0,0 +1,117 @@
+/datum/painter/decal
+	module_name = "decal painter"
+	module_state = "decal_painter"
+	/// icon that contains the decal sprites
+	var/decal_icon = 'icons/turf/decals.dmi'
+	/// icon_state of the selected decal
+	var/decal_state = "warn_box"
+	var/decal_dir = SOUTH
+	/// When removal_mode is TRUE the decal painter will remove decals instead
+	var/removal_mode = FALSE
+	var/max_decals = 3
+	var/static/list/decal_blacklist = typecacheof(
+		list(
+			/obj/effect/turf_decal/raven,
+			/obj/effect/turf_decal/weather,
+			/obj/effect/turf_decal/stripes/asteroid,
+			/obj/effect/turf_decal/tile,
+			/obj/effect/turf_decal/sand
+		)
+	)
+	/// Assoc list with icon_state of the decal as the key, and decal path as the value.
+	var/static/list/lookup_cache_decals = list()
+
+/datum/painter/decal/New(obj/item/painter/parent_painter)
+	. = ..()
+	if(!length(lookup_cache_decals))
+		for(var/D in subtypesof(/obj/effect/turf_decal))
+			var/obj/effect/turf_decal/decal = D
+			if(decal in decal_blacklist)
+				continue
+			lookup_cache_decals[decal::icon_state] = decal
+
+/datum/painter/decal/paint_atom(atom/target, mob/user)
+	if(!istype(target, /turf/simulated/floor))
+		to_chat(user, "<span class='warning'>[holder] can only be used on flooring.</span>")
+		return FALSE
+	var/turf/target_turf = get_turf(target)
+	var/list/datum/element/decal/decals = target_turf.get_decals()
+	if(removal_mode)
+		remove_decals(target)
+		return TRUE
+	if(length(decals) >= max_decals)
+		to_chat(user, "<span class='warning'>You can't fit more decals on [target].</span>")
+		return FALSE
+	var/typepath = lookup_cache_decals[decal_state]
+	new typepath(target_turf, decal_dir)
+	return TRUE
+
+/datum/painter/decal/pick_color(mob/user)
+	if(!user)
+		return
+	ui_interact(user)
+
+/datum/painter/decal/ui_state(mob/user)
+	return GLOB.inventory_state
+
+/datum/painter/decal/ui_interact(mob/user, datum/tgui/ui = null)
+	ui = SStgui.try_update_ui(user, src, ui)
+	if(!ui)
+		ui = new(user, src, "DecalPainter", module_name)
+		ui.set_autoupdate(FALSE)
+		ui.open()
+
+/datum/painter/decal/ui_data(mob/user)
+	var/list/data = list()
+	data["selectedStyle"] = decal_state
+	data["selectedDir"] = decal_dir
+	data["removalMode"] = removal_mode
+
+	return data
+
+
+/datum/painter/decal/ui_static_data(mob/user)
+	var/list/data = list()
+	data["icon"] = decal_icon
+	data["availableStyles"] = list()
+	for(var/decal in lookup_cache_decals)
+		data["availableStyles"] += decal
+
+	return data
+
+/datum/painter/decal/ui_act(action, params)
+	if(..())
+		return
+
+	if(action == "select_style")
+		var/new_style = params["style"]
+		if(lookup_cache_decals.Find(new_style) != 0)
+			decal_state = new_style
+			removal_mode = FALSE
+
+	if(action == "cycle_style") // Cycles through the available styles one at a time
+		var/index = lookup_cache_decals.Find(decal_state) // Find the index of the currently selected style in the lookup cache
+		index += params["offset"] // Offset is either -1 or 1. Add this to the index to get the style before or after the current style.
+		if(index < 1) // If the index is below 1, loop back to the last item in the cache.
+			index = length(lookup_cache_decals)
+		if(index > length(lookup_cache_decals)) // If the index is above the length of the cache, loop back to the first item in the cache.
+			index = 1
+		decal_state = lookup_cache_decals[index] // Then set our state to the index
+		removal_mode = FALSE
+
+	if(action == "select_direction")
+		var/dir = params["direction"]
+		removal_mode = FALSE
+		if(dir != 0)
+			decal_dir = dir
+
+	if(action == "removal_mode")
+		removal_mode = !removal_mode
+	return TRUE
+
+/datum/painter/decal/proc/remove_decals(atom/target)
+	var/turf/target_turf = get_turf(target)
+	var/list/datum/element/decal/decals = target_turf.get_decals()
+	for(var/datum/element/decal/dcl in decals)
+		dcl.Detach(target)
+	target_turf.RemoveElement(/datum/element/decal)

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

@@ -12,14 +12,16 @@
 		"Floor Painter" = /datum/painter/floor,
 		"Pipe Painter" = /datum/painter/pipe,
 		"Window Painter" = /datum/painter/pipe/window,
-		"Airlock Painter" = /datum/painter/airlock)
+		"Airlock Painter" = /datum/painter/airlock,
+		"Decal Painter" = /datum/painter/decal)
 
 	/// Associative list of painter types, with the value being the icon. (For use in the radial menu)
 	var/static/list/painter_icon_list = list(
 		"Floor Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "floor_painter"),
 		"Pipe Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "pipe_painter"),
 		"Window Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "window_painter"),
-		"Airlock Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "airlock_painter"))
+		"Airlock Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "airlock_painter"),
+		"Decal Painter" = image(icon = 'icons/obj/painting.dmi', icon_state = "decal_painter"))
 
 	/// The [/datum/painter] which is currently active.
 	var/datum/painter/selected_module = null