Give space dragon ability to make it's sprite small (#65311)

About The Pull Request

Allows space dragon to replace it's sprite with a carp sprite like the xeno queen can turn it's sprite into a drone.

This means only the dragon sees itself as small. Others still see it as giant.
Why It's Good For The Game

The space dragon sprite is pretty big, so you can't attack stuff directly north of you. This solves that.
Changelog

cl
qol: space dragon can now make it's sprite smaller
/cl

code/datums/action.dm

@@ -867,7 +867,7 @@
 //Small sprites
 /datum/action/small_sprite
 	name = "Toggle Giant Sprite"
-	desc = "Others will always see you as giant"
+	desc = "Others will always see you as giant."
 	icon_icon = 'icons/mob/actions/actions_xeno.dmi'
 	button_icon_state = "smallqueen"
 	background_icon_state = "bg_alien"
@@ -881,8 +881,6 @@
 
 /datum/action/small_sprite/megafauna
 	icon_icon = 'icons/mob/actions/actions_xeno.dmi'
-	button_icon_state = "smallqueen"
-	background_icon_state = "bg_alien"
 	small_icon = 'icons/mob/lavaland/lavaland_monsters.dmi'
 
 /datum/action/small_sprite/megafauna/drake
@@ -902,6 +900,12 @@
 	small_icon_state = "arachnid_mini"
 	background_icon_state = "bg_demon"
 
+/datum/action/small_sprite/space_dragon
+	small_icon = 'icons/mob/carp.dmi'
+	small_icon_state = "carp"
+	icon_icon = 'icons/mob/carp.dmi'
+	button_icon_state = "carp"
+
 /datum/action/small_sprite/Trigger(trigger_flags)
 	..()
 	if(!small)

code/modules/mob/living/simple_animal/hostile/space_dragon.dm

@@ -91,6 +91,8 @@
 	var/objective_complete = FALSE
 	/// The innate ability to summon rifts
 	var/datum/action/innate/summon_rift/rift
+	/// The ability to make your sprite smaller
+	var/datum/action/small_sprite/space_dragon/small_sprite
 	/// The color of the space dragon.
 	var/chosen_color
 	/// Minimum devastation damage dealt coefficient based on max health
@@ -106,6 +108,9 @@
 	ADD_TRAIT(src, TRAIT_HEALS_FROM_CARP_RIFTS, INNATE_TRAIT)
 	rift = new
 	rift.Grant(src)
+	small_sprite = new
+	small_sprite.Grant(src)
+	RegisterSignal(small_sprite, COMSIG_ACTION_TRIGGER, .proc/add_dragon_overlay)
 
 /mob/living/simple_animal/hostile/space_dragon/Login()
 	. = ..()
@@ -201,10 +206,12 @@
 		destroy_rifts()
 	..()
 	add_dragon_overlay()
+	UnregisterSignal(small_sprite, COMSIG_ACTION_TRIGGER)
 
 /mob/living/simple_animal/hostile/space_dragon/revive(full_heal, admin_revive)
 	. = ..()
 	add_dragon_overlay()
+	RegisterSignal(small_sprite, COMSIG_ACTION_TRIGGER, .proc/add_dragon_overlay)
 
 /mob/living/simple_animal/hostile/space_dragon/wabbajack_act(mob/living/new_mob)
 	empty_contents()
@@ -252,6 +259,8 @@
  */
 /mob/living/simple_animal/hostile/space_dragon/proc/add_dragon_overlay()
 	cut_overlays()
+	if(!small_sprite.small)
+		return
 	if(stat == DEAD)
 		var/mutable_appearance/overlay = mutable_appearance(icon, "overlay_dead")
 		overlay.appearance_flags = RESET_COLOR