bulletholes (#16411)

adds atom/proc/ to create/clear bulletholes
makes walls use this proc

code/game/atoms.dm

@@ -675,3 +675,29 @@
 
 /atom/proc/handle_pointed_at(var/mob/pointer)
 	return
+
+/atom/proc/create_bullethole(obj/item/projectile/Proj)
+	var/p_x = Proj.p_x + rand(-6, 6)
+	var/p_y = Proj.p_y + rand(-6, 6)
+	var/obj/effect/overlay/bmark/bullet_mark = new(src)
+
+	bullet_mark.pixel_x = p_x
+	bullet_mark.pixel_y = p_y
+
+	//Offset correction
+	bullet_mark.pixel_x--
+	bullet_mark.pixel_y--
+
+	if(Proj.damage_flags & DAMAGE_FLAG_BULLET)
+		bullet_mark.icon_state = "dent"
+	else if(Proj.damage_flags & DAMAGE_FLAG_LASER)
+		bullet_mark.name = "scorch mark"
+		if(Proj.damage >= 20)
+			bullet_mark.icon_state = "scorch"
+			bullet_mark.set_dir(pick(NORTH,SOUTH,EAST,WEST)) // Pick random scorch design
+		else
+			bullet_mark.icon_state = "light_scorch"
+	
+/atom/proc/clear_bulletholes()
+	for(var/obj/effect/overlay/bmark/bullet_mark in src)
+		qdel(bullet_mark)

code/game/objects/effects/decals/bullet_holes.dm

@@ -0,0 +1,6 @@
+/obj/effect/overlay/bmark
+    name = "bullet hole"
+    desc = "Somebody's been shooting."
+    icon = 'icons/effects/effects.dmi'
+    layer = ABOVE_OBJ_LAYER
+    icon_state = "dent"

code/game/turfs/simulated/wall_attacks.dm

@@ -179,6 +179,7 @@
 			if(WT.use_tool(src, user, max(5, damage / 5), volume = 50) && WT && WT.isOn())
 				to_chat(user, SPAN_NOTICE("You finish repairing the damage to [src]."))
 				take_damage(-damage)
+				clear_bulletholes()
 		else
 			to_chat(user, SPAN_NOTICE("You need more welding fuel to complete this task."))
 			return

code/game/turfs/simulated/walls.dm

@@ -86,6 +86,7 @@
 		burn(500)
 	
 	bullet_ping(Proj)
+	create_bullethole(Proj)
 
 	var/proj_damage = Proj.get_structure_damage()
 	var/damage = proj_damage
@@ -123,6 +124,7 @@
 
 /turf/simulated/wall/ChangeTurf(var/newtype)
 	clear_plants()
+	clear_bulletholes()
 	..(newtype)
 
 //Appearance
@@ -205,6 +207,7 @@
 			O.forceMove(src)
 
 	clear_plants()
+	clear_bulletholes()
 	material = SSmaterials.get_material_by_name("placeholder")
 	reinf_material = null