First attempt at making size change damage (doesn't work yet)

code/game/objects/items.dm

@@ -109,6 +109,9 @@ GLOBAL_VAR_INIT(rpg_loot_items, FALSE)
 	var/list/grind_results //A reagent list containing the reagents this item produces when ground up in a grinder - this can be an empty list to allow for reagent transferring only
 	var/list/juice_results //A reagent list containing blah blah... but when JUICED in a grinder!
 
+	//Compression kit vars
+	var/force_mult = 1
+
 /obj/item/Initialize()
 
 	materials =	typelist("materials", materials)

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

@@ -2,16 +2,35 @@
 	name = "bluespace compression kit"
 	desc = "An illegally modified BSRPED, capable of reducing the size of most items."
 	icon = 'icons/obj/tools.dmi'
-	icon_state = "compression"
+	icon_state = "compression_c"
 	item_state = "RPED"
 	lefthand_file = 'icons/mob/inhands/misc/devices_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/misc/devices_righthand.dmi'
 	w_class = WEIGHT_CLASS_NORMAL
 	var/charges = 5
+	var/damage_multiplier = 0.2 // Changing this effects how much more or less damage a resized item will do
+	var/mode = 0
 
 /obj/item/compressionkit/examine(mob/user)
 	..()
-	to_chat(user, "<span class='notice'>It has [charges] charges left.</span>")
+	to_chat(user, "<span class='notice'>It has [charges] charges left. Recharge with bluespace crystals.</span>")
+	to_chat(user, "<span class='notice'>Use in-hand to swap toggle compress/expand mode (expand mode not yet implemented).</span>")
+
+/obj/item/compressionkit/attack_self(mob/user)
+	if(mode == 0)
+		mode = 1
+		icon_state = "compression_e"
+		to_chat(user, "<span class='notice'>You switch the compressor to expand mode. This isn't implemented yet, so right now it wont do anything different!</span>")
+		return
+	if(mode == 1)
+		mode = 0
+		icon_state = "compression_c"
+		to_chat(user, "<span class='notice'>You switch the compressor to compress mode. Usage will now reduce the size of objects.</span>")
+		return
+	else
+		mode = 0
+		icon_state = "compression_c"
+		to_chat(user, "<span class='notice'>Some coder cocked up or an admin broke your compressor. It's been set back to compress mode..</span>")
 
 /obj/item/compressionkit/proc/sparks()
 	var/datum/effect_system/spark_spread/s = new /datum/effect_system/spark_spread
@@ -64,6 +83,7 @@
 				sparks()
 				flash_lighting_fx(3, 3, LIGHT_COLOR_CYAN)
 				O.w_class -= 1
+				O.force_mult -= damage_multiplier
 				charges -= 1
 				to_chat(user, "<span class='notice'>You successfully compress [target]! The compressor now has [charges] charges.</span>")
 		else