Removes swiftness, add speed potions back as oil slick potions (#20939)

* Removes swiftness, add speed potions back as oil potions

* no shorting, icon update on mob

* early and forgotten returns

* ramon oil colours

* Update code/modules/research/xenobiology/xenobiology.dm

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

* no more slipery vehicles, now slippery tables

* just because it compiled the first time doesn't mean the second list will compile idiot

* icons my hated

* bottle4

* cleaner up

* qwerty my man what you doin: s34n 2023

---------

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

code/game/objects/structures/tables_racks.dm

@@ -36,6 +36,8 @@
 	var/framestackamount = 2
 	var/deconstruction_ready = TRUE
 	var/flipped = FALSE
+	///If this is true, the table will have items slide off it when placed.
+	var/slippery = FALSE
 	/// The minimum level of environment_smash required for simple animals to be able to one-shot this.
 	var/minimum_env_smash = ENVIRONMENT_SMASH_WALLS
 
@@ -235,7 +237,12 @@
 			//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)
-			item_placed(I)
+			if(slippery)
+				step_away(I, user)
+				visible_message("<span class='warning'>[I] slips right off [src]!</span>")
+				playsound(loc, 'sound/misc/slip.ogg', 50, 1, -1)
+			else //Don't want slippery moving tables to have the item attached to them if it slides off.
+				item_placed(I)
 	else
 		return ..()
 
@@ -402,6 +409,14 @@
 	return 1
 
 
+/obj/structure/table/water_act(volume, temperature, source, method)
+	. = ..()
+	if(HAS_TRAIT(src, TRAIT_OIL_SLICKED))
+		slippery = initial(slippery)
+		remove_atom_colour(FIXED_COLOUR_PRIORITY)
+		REMOVE_TRAIT(src, TRAIT_OIL_SLICKED, "potion")
+
+
 /*
  * Glass Tables
  */