Port Atlas's implementation of -tg-'s canvas art.

code/game/objects/items/stacks/sheets/sheet_types.dm

@@ -155,6 +155,7 @@ var/global/list/datum/stack_recipe/wood_recipes = list ( \
 	new/datum/stack_recipe("wooden door", /obj/structure/mineral_door/wood, 10, time = 20, one_per_turf = 1, on_floor = 1), \
 	new/datum/stack_recipe("coffin", /obj/structure/closet/coffin, 5, time = 15, one_per_turf = 1, on_floor = 1), \
 	new/datum/stack_recipe("apiary", /obj/item/apiary, 10, time = 25, one_per_turf = 0, on_floor = 0), \
+	new/datum/stack_recipe("easel", /obj/structure/easel, 3, one_per_turf = 1, on_floor = 1), \
 	)
 
 /obj/item/stack/sheet/wood

code/game/objects/structures/artstuff.dm

@@ -0,0 +1,151 @@
+/////////////////
+// NEW DEFINES //
+/////////////////
+
+/client
+	var/viewingCanvas = 0 //If this is 1, as soon as client /TRIES/ to move the view resets.
+
+///////////
+// EASEL //
+///////////
+
+/obj/structure/easel
+	name = "easel"
+	desc = "only for the finest of art!"
+	icon = 'icons/obj/artstuff.dmi'
+	icon_state = "easel"
+	density = 1
+	var/obj/item/weapon/canvas/painting = null
+
+
+//Adding canvases
+/obj/structure/easel/attackby(var/obj/item/I, var/mob/user, params)
+	if(istype(I, /obj/item/weapon/canvas))
+		var/obj/item/weapon/canvas/C = I
+		user.unEquip(C)
+		painting = C
+		C.loc = get_turf(src)
+		C.layer = layer+0.1
+		user.visible_message("<span class='notice'>[user] puts \the [C] on \the [src].</span>","<span class='notice'>You place \the [C] on \the [src].</span>")
+		return
+
+	..()
+
+
+//Stick to the easel like glue
+/obj/structure/easel/Move()
+	var/turf/T = get_turf(src)
+	..()
+	if(painting && painting.loc == T) //Only move if it's near us.
+		painting.loc = get_turf(src)
+	else
+		painting = null
+
+
+//////////////
+// CANVASES //
+//////////////
+
+#define AMT_OF_CANVASES	4 //Keep this up to date or shit will break.
+
+//To safe memory on making /icons we cache the blanks..
+var/global/list/globalBlankCanvases[AMT_OF_CANVASES]
+
+/obj/item/weapon/canvas
+	name = "11px by 11px canvas"
+	desc = "Draw out your soul on this canvas! Only crayons can draw on it. Examine it to focus on the canvas."
+	icon = 'icons/obj/artstuff.dmi'
+	icon_state = "11x11"
+	var/whichGlobalBackup = 1 //List index
+
+/obj/item/weapon/canvas/nineteenXnineteen
+	name = "19px by 19px canvas"
+	icon_state = "19x19"
+	whichGlobalBackup = 2
+
+/obj/item/weapon/canvas/twentythreeXnineteen
+	name = "23px by 19px canvas"
+	icon_state = "23x19"
+	whichGlobalBackup = 3
+
+/obj/item/weapon/canvas/twentythreeXtwentythree
+	name = "23px by 23px canvas"
+	icon_state = "23x23"
+	whichGlobalBackup = 4
+
+
+//Find the right size blank canvas
+/obj/item/weapon/canvas/proc/getGlobalBackup()
+	. = null
+	if(globalBlankCanvases[whichGlobalBackup])
+		. = globalBlankCanvases[whichGlobalBackup]
+	else
+		var/icon/I = icon(initial(icon),initial(icon_state))
+		globalBlankCanvases[whichGlobalBackup] = I
+		. = I
+
+
+
+//One pixel increments
+/obj/item/weapon/canvas/attackby(var/obj/item/I, var/mob/user, params)
+	//Click info
+	var/list/click_params = params2list(params)
+	var/pixX = text2num(click_params["icon-x"])
+	var/pixY = text2num(click_params["icon-y"])
+
+	//Should always be true, otherwise you didn't click the object, but let's check because SS13~
+	if(!click_params || !click_params["icon-x"] || !click_params["icon-y"])
+		return
+
+	var/icon/masterpiece = icon(icon,icon_state)
+	//Cleaning one pixel with a soap or rag
+	if(istype(I, /obj/item/weapon/soap) || istype(I, /obj/item/weapon/reagent_containers/glass/rag))
+		//Pixel info created only when needed
+		var/thePix = masterpiece.GetPixel(pixX,pixY)
+		var/icon/Ico = getGlobalBackup()
+		if(!Ico)
+			qdel(masterpiece)
+			return
+
+		var/theOriginalPix = Ico.GetPixel(pixX,pixY)
+		if(thePix != theOriginalPix) //colour changed
+			DrawPixelOn(theOriginalPix,pixX,pixY)
+		qdel(masterpiece)
+		return
+
+	//Drawing one pixel with a crayon
+	if(istype(I, /obj/item/toy/crayon))
+		var/obj/item/toy/crayon/C = I
+		if(masterpiece.GetPixel(pixX, pixY)) // if the located pixel isn't blank (null))
+			DrawPixelOn(C.colour, pixX, pixY)
+		return
+
+	..()
+
+//Clean the whole canvas
+/obj/item/weapon/canvas/attack_self(var/mob/user)
+	if(!user)
+		return
+	var/icon/blank = getGlobalBackup()
+	if(blank)
+		//it's basically a giant etch-a-sketch
+		icon = blank
+		user.visible_message("<span class='notice'>[user] cleans the canvas.</span>","<span class='notice'>You clean the canvas.</span>")
+
+//Examine to enlarge
+/obj/item/weapon/canvas/examine(var/mob/user = usr)
+	..()
+	if(in_range(user, src) && get_turf(src) && user.client && ishuman(user)) //Let only humans be the robust zoominators. I'm too spooked other mobs trying to use it may get broken huds.
+		if(src.loc == user || get_turf(src) == get_turf(user))
+			user << "<span class='notice'>[src] has to be on the ground to focus on it!</span>"
+			return
+		user << "<span class='notice'>You focus on \the [src].</span>"
+		user.client.screen = list() //This is because screen objects go way past the view bounds we set, therefore not allowing stretch to fit to zoom in properly.
+		user.client.reset_stretch = winget(user.client, "mapwindow.map", "icon-size") //Remember previous icon-size
+		user.client.view = 3 //Decrease view
+		winset(user.client, "mapwindow.map", "icon-size=0") //Enable stretch-to-fit
+		user.client.viewingCanvas = 1 //Reset everything we just changed as soon as client tries to move
+	else
+		user << "<span class='notice'>It is too far away.</span>"
+
+#undef AMT_OF_CANVASES