[ALMOST MODULAR] Custom HUD icons (#2635)

* huds merge

* codestyle

* comment edit

code/modules/mob/mob.dm

@@ -181,7 +181,7 @@
 			hud_list[hud] = list()
 
 		else
-			var/image/I = image('modular_nova/master_files/icons/mob/huds/hud.dmi', src, "")	//NOVA EDIT: original filepath 'icons/mob/huds/hud.dmi'
+			var/image/I = image(GLOB.merged_huds, src, "") // FF EDIT. NOVA EDITED ICON: 'modular_nova/master_files/icons/mob/huds/hud.dmi'; TG ORIGINAL ICON: 'icons/mob/huds/hud.dmi'
 			I.appearance_flags = RESET_COLOR|RESET_TRANSFORM
 			hud_list[hud] = I
 		set_hud_image_active(hud, update_huds = FALSE) //by default everything is active. but dont add it to huds to keep control.

tff_modular/modules/custom_huds/code/huds.dm

@@ -0,0 +1,9 @@
+GLOBAL_VAR_INIT(merged_huds, merge_huds())
+
+/proc/merge_huds()
+	var/icon/huds = new('modular_nova/master_files/icons/mob/huds/hud.dmi')
+	var/icon/ff_huds = new('tff_modular/modules/custom_huds/icons/hud.dmi')
+
+	for(var/state in icon_states(ff_huds))
+		huds.Insert(icon(ff_huds, state), state)
+	return huds

tgstation.dme

@@ -8271,6 +8271,7 @@
 #include "tff_modular\modules\cqd_holsters\code\holster_injections.dm"
 #include "tff_modular\modules\cqd_holsters\code\holster_storage.dm"
 #include "tff_modular\modules\cqd_holsters\code\utility.dm"
+#include "tff_modular\modules\custom_huds\code\huds.dm"
 #include "tff_modular\modules\custom_revolution\code\rev_convert_item.dm"
 #include "tff_modular\modules\custom_revolution\code\rev_custom_hud.dm"
 #include "tff_modular\modules\custom_revolution\code\rev_deconvert_machine.dm"