Light floor added

For non-coders:
- Added floor lights
- To build: Use wire on glass, use metal on the assembly you get, use it on a plating. To fix flickering or broken tiles, use a lightbulb on them.
- To deconstruct: Crowbar on floor to remove it, crowbar on light tile to remove metal, wirecutters to separate the wire from the glass.
- Click on tile with an empty hand to turn it on/off

For coders:
- The turf system has been rewritten to contain a tile variable which defines what kind of turf it is. The 'intact' var can no longer be used to determine if the turf is a steel floor. Intact only tells if wires and pipes are to be hidden (for hide() procs)
- Use is_plating(), is_steel_floor() and is_light_floor() to determine the floor type.
- Use make_plating(), make_steel_floor() and make_light_floor() to do this. They take the floor tile by default as a parameter, if none is given they will make one themselves.

Credits for the sprites go to Hempuli, used with permission.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@1513 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/items/clothing.dm

@@ -960,7 +960,7 @@ NINJA MASK
 	var/mob/living/carbon/human/U = usr
 	if(candrain&&!draining)
 		var/turf/T = U.loc
-		if(isturf(T) && !T.intact)
+		if(isturf(T) && T.is_plating())
 			attached = locate() in T
 			if(!attached)
 				U << "\red Warning: no exposed cable available."

code/game/objects/stacks/glass.dm

@@ -78,7 +78,21 @@ SHARDS
 
 /obj/item/stack/sheet/glass/attackby(obj/item/W, mob/user)
 	..()
-	if( istype(W, /obj/item/stack/rods) )
+	if(istype(W,/obj/item/weapon/cable_coil))
+		var/obj/item/weapon/cable_coil/CC = W
+		if(CC.amount < 5)
+			user << "\b There is not enough wire in this coil. You need 5 lengths."
+		CC.amount -= 5
+		amount -= 1
+		user << "\blue You attack wire to the [name]."
+		new/obj/item/stack/light_w(user.loc)
+		if(CC.amount <= 0)
+			user.u_equip(CC)
+			del(CC)
+		if(src.amount <= 0)
+			user.u_equip(src)
+			del(src)
+	else if( istype(W, /obj/item/stack/rods) )
 		var/obj/item/stack/rods/V  = W
 		var/obj/item/stack/sheet/rglass/RG = new (user.loc)
 		RG.add_fingerprint(user)

code/game/objects/stacks/metal.dm

@@ -66,7 +66,7 @@ var/global/list/datum/stack_recipe/metal_recipes = list ( \
 	null, \
 	new/datum/stack_recipe("canister", /obj/machinery/portable_atmospherics/canister, 2, one_per_turf = 1), \
 	null, \
-	new/datum/stack_recipe("floor tile", /obj/item/stack/tile, 1, 4, 10), \
+	new/datum/stack_recipe("floor tile", /obj/item/stack/tile/steel, 1, 4, 10), \
 	new/datum/stack_recipe("metal rod", /obj/item/stack/rods, 1, 2, 60), \
 	new/datum/stack_recipe("reinforced sheet", /obj/item/stack/sheet/r_metal, 2, 1, 50), \
 	null, \
@@ -102,13 +102,13 @@ var/global/list/datum/stack_recipe/r_metal_recipes = list ( \
 
 // TILES
 
-/obj/item/stack/tile/New(var/loc, var/amount=null)
+/obj/item/stack/tile/steel/New(var/loc, var/amount=null)
 	..()
 	src.pixel_x = rand(1, 14)
 	src.pixel_y = rand(1, 14)
 	return
 
-/obj/item/stack/tile/attack_self(mob/user as mob)
+/obj/item/stack/tile/steel/attack_self(mob/user as mob)
 	if (usr.stat)
 		return
 	var/T = user.loc
@@ -123,7 +123,7 @@ var/global/list/datum/stack_recipe/r_metal_recipes = list ( \
 	use(1)
 	return
 
-/obj/item/stack/tile/proc/build(turf/S as turf)
+/obj/item/stack/tile/steel/proc/build(turf/S as turf)
 	var/turf/simulated/floor/W = S.ReplaceWithFloor()
-	W.to_plating()
+	W.make_plating()
 	return