Fixes the pool's overlay making impossible to click spessmen inside water (#4004)

code/game/turfs/simulated/water.dm

@@ -22,6 +22,7 @@
 	footstep_sound = "waterstep"
 	movement_cost = 2
 	var/watertype = "water5"
+	var/obj/effect/water_effect/water_overlay
 
 /turf/simulated/floor/beach/water/pool
 	name = "pool"
@@ -38,12 +39,29 @@
 	icon_state = "abyss"
 	watertype = "seadeep"
 
+/obj/effect/water_effect
+	name = "water"
+	icon = 'icons/misc/beach.dmi'
+	layer = MOB_LAYER+0.1
+	opacity = FALSE
+	anchored = TRUE
+	mouse_opacity = FALSE
+	unacidable = TRUE
+
 /turf/simulated/floor/beach/water/update_dirt()
 	return	// Water doesn't become dirty
 
 /turf/simulated/floor/beach/water/Initialize()
 	. = ..()
-	add_overlay(image("icon"='icons/misc/beach.dmi',"icon_state"="[watertype]","layer"=MOB_LAYER+0.1))
+	var/obj/effect/water_effect/W = new /obj/effect/water_effect(src)
+	W.icon_state = watertype
+	water_overlay = W
+
+/turf/simulated/floor/beach/water/Destroy()
+	if(water_overlay)
+		qdel(water_overlay)
+		water_overlay = null
+	return ..()
 
 /turf/simulated/floor/beach/water/return_air_for_internal_lifeform(var/mob/living/carbon/L)
 	if(L && L.lying)

html/changelogs/alberyk_pool.yml

@@ -0,0 +1,6 @@
+author: Alberyk
+
+delete-after: True
+
+changes: 
+  - bugfix: "You can now properly click on people and objects that are on water titles, such as the pool."