Adds glass tables, glass table frames

This commit adds glass tables (credit to WalterJe of -tg-'s fourms for
the sprites) to the game. These can be constructed with two metal
sheets, and two glass sheets. Flipping the table causes it to shatter
and deconstruct itself. You can deconstruct the table at any stage
with a wrench.

code/game/objects/structures/tables_racks.dm

@@ -237,6 +237,22 @@
 					icon_state = "wood_tabledir2"
 				if(6)
 					icon_state = "wood_tabledir3"
+		else if(istype(src,/obj/structure/table/glass))
+			switch(table_type)
+				if(0)
+					icon_state = "glass_table"
+				if(1)
+					icon_state = "glass_table_1tileendtable"
+				if(2)
+					icon_state = "glass_table_1tilethick"
+				if(3)
+					icon_state = "glass_table_dir"
+				if(4)
+					icon_state = "glass_table_middle"
+				if(5)
+					icon_state = "glass_tabledir2"
+				if(6)
+					icon_state = "glass_tabledir3"
 		else
 			switch(table_type)
 				if(0)
@@ -668,6 +684,109 @@
 
 	return 1
 
+/obj/structure/glasstable_frame
+	name = "glass table frame"
+	desc = "A metal frame for a glass table."
+	icon = 'icons/obj/structures.dmi'
+	icon_state = "glass_table_frame"
+	density = 1
+
+/obj/structure/glasstable_frame/attackby(obj/item/I as obj, mob/user as mob, params)
+	if(istype(I, /obj/item/stack/sheet/glass))
+		var/obj/item/stack/sheet/glass/G = I
+		if(G.amount >= 2)
+			user << "<span class='notice'>You start to add the glass to \the [src].</span>"
+			if(do_after(user, 10))
+				G.use(2)
+				user << "<span class='notice'>You add the glass to \the [src].</span>"
+				playsound(get_turf(src), 'sound/items/Deconstruct.ogg', 50, 1)
+				new /obj/structure/table/glass(loc)
+				del(src)
+		else
+			user << "<span class='notice'>You don't have enough glass! You need at least 2 sheets.</span>"
+			return
+
+	if(iswrench(I))
+		user << "<span class='notice'>You start to deconstruct \the [src].</span>"
+		playsound(src.loc, 'sound/items/Ratchet.ogg', 75, 1)
+		if(do_after(user, 10))
+			playsound(src.loc, 'sound/items/Deconstruct.ogg', 75, 1)
+			user << "<span class='notice'>You dismantle \the [src].</span>"
+			new /obj/item/stack/sheet/metal(loc)
+			new /obj/item/stack/sheet/metal(loc)
+			del(src)
+
+/obj/structure/table/glass
+	name = "glass table"
+	desc = "Looks fragile. You should totally flip it. It's begging you too."
+	icon_state = "glass_table"
+	parts = /obj/item/weapon/table_parts/glass
+	health = 10
+
+/obj/structure/table/glass/flip(var/direction)
+	src.visible_message("<span class='warning'>\The [src] shatters, and the frame collapses!</span>")
+	new /obj/item/weapon/table_parts/glass(loc)
+	getFromPool(/obj/item/weapon/shard, loc)
+	if(prob(50)) //50% chance to spawn two shards
+		getFromPool(/obj/item/weapon/shard, loc)
+	qdel(src)
+
+/obj/structure/table/glass/attackby(obj/item/I as obj, mob/user as mob, params)
+
+	if (istype(I, /obj/item/weapon/grab))
+		var/obj/item/weapon/grab/G = I
+		if(G.affecting.buckled)
+			user << "<span class='notice'>[G.affecting] is buckled to [G.affecting.buckled]!</span>"
+			return
+		if(G.state < GRAB_AGGRESSIVE)
+			user << "<span class='notice'>You need a better grip to do that!</span>"
+			return
+		if(!G.confirm())
+			return
+		G.affecting.loc = src.loc
+		G.affecting.Weaken(5)
+		visible_message("\red [G.assailant] puts [G.affecting] on the table.")
+		del(I)
+		return
+
+	if (istype(I, /obj/item/weapon/wrench))
+		user << "\blue Now disassembling the glass table"
+		playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
+		sleep(50)
+		new /obj/item/weapon/table_parts/glass( src.loc )
+		new /obj/item/stack/sheet/glass( src.loc )
+		playsound(src.loc, 'sound/items/Deconstruct.ogg', 50, 1)
+		del(src)
+		return
+
+	if(isrobot(user))
+		return
+	if(istype(I, /obj/item/weapon/melee/energy/blade))
+		var/datum/effect/effect/system/spark_spread/spark_system = new /datum/effect/effect/system/spark_spread()
+		spark_system.set_up(5, 0, src.loc)
+		spark_system.start()
+		playsound(src.loc, 'sound/weapons/blade1.ogg', 50, 1)
+		playsound(src.loc, "sparks", 50, 1)
+		for(var/mob/O in viewers(user, 4))
+			O.show_message("\blue The wooden table was sliced apart by [user]!", 1, "\red You hear glass being sliced apart.", 2)
+		new /obj/item/weapon/table_parts/glass( src.loc )
+		new /obj/item/stack/sheet/glass( src.loc )
+		del(src)
+		return
+
+	if(!(I.flags & ABSTRACT))
+		if(user.drop_item())
+			I.Move(loc)
+			var/list/click_params = params2list(params)
+			//Center the icon where the user clicked.
+			if(!click_params || !click_params["icon-x"] || !click_params["icon-y"])
+				return
+			//Clamp it so that the icon never moves more than 16 pixels in either direction (thus leaving the table turf)
+			I.pixel_x = Clamp(text2num(click_params["icon-x"]) - 16, -(world.icon_size/2), world.icon_size/2)
+			I.pixel_y = Clamp(text2num(click_params["icon-y"]) - 16, -(world.icon_size/2), world.icon_size/2)
+
+	return 1
+
 
 /*
  * Reinforced tables