Adjust modsuit helmets for monitor heads. (#31663)

* Add modsuit helmets for monitor heads.

* Monitor head compatibility code

* Tweak modsuit helmet icons, update some module icons.

* Update welding screen module.

---------

Co-authored-by: PollardTheDragon <144391971+PollardTheDragon@users.noreply.github.com>

code/modules/mod/mod_clothes.dm

@@ -2,6 +2,7 @@
 	name = "MOD helmet"
 	desc = "A helmet for a MODsuit."
 	icon = 'icons/obj/clothing/modsuit/mod_clothing.dmi'
+	icon_monitor = 'icons/mob/clothing/modsuit/species/monitor_helmets.dmi'
 	icon_state = "standard-helmet"
 	base_icon_state = "helmet"
 	worn_icon = 'icons/mob/clothing/modsuit/mod_clothing.dmi'

code/modules/mod/modules/_modules.dm

@@ -50,6 +50,8 @@
 	COOLDOWN_DECLARE(cooldown_timer) //sohtgdoiuduhnfipguhndshnfigdnghd
 	///The UID of the module. Don't ask.
 	var/module_UID = null
+	/// Replaces the sprite for monitor heads
+	var/icon_monitor = null
 	sprite_sheets = list(
 		"Grey" = 'icons/mob/clothing/modsuit/species/grey_mod_modules.dmi',
 		"Vulpkanin" = 'icons/mob/clothing/modsuit/species/modules_vulp.dmi',
@@ -304,7 +306,11 @@
 	else
 		return
 	var/image/final_overlay
-	if(sprite_sheets && sprite_sheets[user.dna.species.sprite_sheet_name])
+	var/obj/item/organ/external/head/head_organ = user.get_organ("head")
+	var/datum/robolimb/robohead = head_organ.is_robotic() ? GLOB.all_robolimbs[head_organ.model] : null
+	if(robohead && robohead.is_monitor && icon_monitor)
+		final_overlay = image(icon = icon_monitor, icon_state = used_overlay, layer = -HEAD_LAYER + 0.1)
+	else if(sprite_sheets && sprite_sheets[user.dna.species.sprite_sheet_name])
 		final_overlay = image(icon = sprite_sheets[user.dna.species.sprite_sheet_name], icon_state = used_overlay, layer = -HEAD_LAYER + 0.1)
 	else
 		final_overlay = image(icon = overlay_icon_file, icon_state = used_overlay, layer = -HEAD_LAYER + 0.1)

code/modules/mod/modules/modules_antag.dm

@@ -16,6 +16,7 @@
 	overlay_state_inactive = "module_armorbooster_off"
 	overlay_state_active = "module_armorbooster_on"
 	use_mod_colors = TRUE
+	icon_monitor = 'icons/mob/clothing/modsuit/species/modules_monitor.dmi'
 	/// Whether or not this module removes pressure protection.
 	var/remove_pressure_protection = TRUE
 	/// Speed added to the control unit.
@@ -100,6 +101,7 @@
 	removable = FALSE
 	incompatible_modules = list(/obj/item/mod/module/insignia)
 	overlay_state_inactive = "module_insignia"
+	icon_monitor = 'icons/mob/clothing/modsuit/species/modules_monitor.dmi'
 
 /obj/item/mod/module/insignia/generate_worn_overlay(user, mutable_appearance/standing)
 	overlay_state_inactive = "[initial(overlay_state_inactive)]-[mod.skin]"

code/modules/mod/modules/modules_engineering.dm

@@ -10,6 +10,7 @@
 	complexity = 1
 	incompatible_modules = list(/obj/item/mod/module/welding, /obj/item/mod/module/armor_booster)
 	overlay_state_inactive = "module_welding"
+	icon_monitor = 'icons/mob/clothing/modsuit/species/modules_monitor.dmi'
 
 /obj/item/mod/module/welding/on_suit_activation()
 	mod.helmet.flash_protect = FLASH_PROTECTION_WELDER

code/modules/mod/modules/modules_general.dm

@@ -221,6 +221,7 @@
 	overlay_state_active = "module_light_on"
 	light_color = COLOR_WHITE
 	materials = list(MAT_METAL = 2500, MAT_GLASS = 5000)
+	icon_monitor = 'icons/mob/clothing/modsuit/species/modules_monitor.dmi'
 	///The light power for the mod
 	var/mod_light_range = 4
 	///The light range for the mod
@@ -457,6 +458,7 @@
 	idle_power_cost = DEFAULT_CHARGE_DRAIN * 0.3
 	incompatible_modules = list(/obj/item/mod/module/plasma_stabilizer)
 	overlay_state_inactive = "module_plasma"
+	icon_monitor = 'icons/mob/clothing/modsuit/species/modules_monitor.dmi'
 	materials = list(MAT_METAL = 10000, MAT_GLASS = 4000, MAT_SILVER = 2000)
 
 /obj/item/mod/module/plasma_stabilizer/on_equip()