Ability Cooldown Timers

code/__DEFINES/action.dm

@@ -20,8 +20,6 @@
 // /datum/action/ability/xeno_action. Additional references
 /// A mutable appearance to add the "empowered" frame around the edges
 #define VREF_MUTABLE_EMPOWERED_FRAME "VREF_EMPOWERED_FRAME"
-/// A image to show the clock delay ticking.
-#define VREF_IMAGE_XENO_CLOCK "VREF_ACTION_CLOCK"
 /// A reference for the build counter of a xeno
 #define VREF_MUTABLE_BUILDING_COUNTER "VREF_BUILD_COUNTER"
 // extra reference for the amount of landslide charges we have

code/datums/actions/ability_actions.dm

@@ -17,15 +17,14 @@
 	var/target_flags = NONE
 	/// flags to restrict an ability to certain gamemode
 	var/gamemode_flags = ABILITY_ALL_GAMEMODE
+	///Cooldown map text holder
+	var/obj/effect/countdown/action_cooldown/countdown
 
 /datum/action/ability/New(Target)
 	. = ..()
 	if(ability_cost)
 		name = "[name] ([ability_cost])"
-	var/image/cooldown_image = image('icons/effects/progressicons.dmi', null, "busy_clock", ACTION_LAYER_CLOCK)
-	cooldown_image.pixel_y = 7
-	cooldown_image.appearance_flags = RESET_COLOR|RESET_ALPHA
-	visual_references[VREF_IMAGE_XENO_CLOCK] = cooldown_image
+	countdown = new(button, src)
 
 /datum/action/ability/give_action(mob/living/L)
 	. = ..()
@@ -136,7 +135,8 @@
 	if(cooldown_timer || !cooldown_length) // stop doubling up or waiting on zero
 		return
 	cooldown_timer = addtimer(CALLBACK(src, PROC_REF(on_cooldown_finish)), cooldown_length, TIMER_STOPPABLE)
-	button.add_overlay(visual_references[VREF_IMAGE_XENO_CLOCK])
+	countdown.start()
+	update_button_icon()
 
 ///Time remaining on cooldown
 /datum/action/ability/proc/cooldown_remaining()
@@ -147,7 +147,8 @@
 	cooldown_timer = null
 	if(!button)
 		CRASH("no button object on finishing ability action cooldown")
-	button.cut_overlay(visual_references[VREF_IMAGE_XENO_CLOCK])
+	countdown.stop()
+	update_button_icon()
 
 ///Any changes when a xeno with this ability evolves
 /datum/action/ability/proc/on_xeno_upgrade()

code/game/objects/effects/countdown.dm

@@ -85,3 +85,50 @@
 		return
 	var/obj/structure/campaign_objective/capture_objective/objective = attached_to
 	return objective.get_time_left()
+
+/obj/effect/countdown/action_cooldown
+	name = "cooldown"
+	color = "#d1d1d1"
+	invisibility = SEE_INVISIBLE_LIVING
+	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
+	layer = ABOVE_HUD_LAYER
+	plane = HUD_PLANE
+	pixel_x = 5
+	pixel_y = 8
+	appearance_flags = KEEP_APART|RESET_COLOR
+	///The action this countdown is associated with
+	var/datum/action/ability/attached_action
+
+/obj/effect/countdown/action_cooldown/Destroy()
+	attached_action = null
+	return ..()
+
+/obj/effect/countdown/action_cooldown/attach(atom/A)
+	var/atom/movable/screen/action_button/button = A
+	if(!istype(button))
+		qdel(src)
+		return
+	attached_to = button
+	button.vis_contents += src
+	attached_action = button.source_action
+
+/obj/effect/countdown/action_cooldown/start()
+	if(!started)
+		START_PROCESSING(SSfastprocess, src)
+		started = TRUE
+
+/obj/effect/countdown/action_cooldown/process()
+	if(QDELETED(attached_to))
+		qdel(src)
+		return
+	var/new_val = round(attached_action.cooldown_remaining(), 0.1)
+	if(new_val == displayed_text)
+		return
+	if(new_val >= 10) //avoid cropping, and deciseconds don't really matter if you're 10+ seconds away
+		new_val = floor(new_val)
+	displayed_text = new_val
+
+	if(displayed_text)
+		maptext = "<font size = [text_size]>[displayed_text]</font>"
+	else
+		maptext = null