prone screen alert (#1151)

Author: Kapu1178

code/_onclick/hud/alert.dm

@@ -839,6 +839,19 @@ or shoot a gun to move around via Newton's 3rd Law of Motion."
 	desc = "You are in very bad shape. Max stamina reduced by 100 and stamina regen reduced by 5."
 	icon_state = ALERT_SOFTCRIT
 
+/atom/movable/screen/alert/lying_down
+	name = "Prone"
+	desc = "You are prone. Click to attempt to stand up."
+	icon_state = "paralysis"
+
+/atom/movable/screen/alert/lying_down/Click(location, control, params)
+	. = ..()
+	if(!.)
+		return
+
+	var/mob/living/living_owner = owner
+	living_owner.set_resting(FALSE)
+
 // PRIVATE = only edit, use, or override these if you're editing the system as a whole
 
 // Re-render all alerts - also called in /datum/hud/show_hud() because it's needed there

code/modules/mob/living/living.dm

@@ -528,25 +528,33 @@
 /mob/living/proc/on_lying_down(new_lying_angle)
 	if(layer == initial(layer)) //to avoid things like hiding larvas.
 		layer = LYING_MOB_LAYER //so mob lying always appear behind standing mobs
+
 	ADD_TRAIT(src, TRAIT_UI_BLOCKED, LYING_DOWN_TRAIT)
 	ADD_TRAIT(src, TRAIT_PULL_BLOCKED, LYING_DOWN_TRAIT)
+
 	set_density(FALSE) // We lose density and stop bumping passable dense things.
+
 	if(HAS_TRAIT(src, TRAIT_FLOORED) && !(dir & (NORTH|SOUTH)))
 		setDir(pick(NORTH, SOUTH)) // We are and look helpless.
+
 	body_position_pixel_y_offset = PIXEL_Y_OFFSET_LYING
-	playsound(loc, 'goon/sounds/body_thud.ogg', ishuman(src) ? 40 : 15, 1, 0.3)
 
+	playsound(loc, 'goon/sounds/body_thud.ogg', ishuman(src) ? 40 : 15, 1, 0.3)
+	throw_alert("lying_down", /atom/movable/screen/alert/lying_down)
 
 /// Proc to append behavior related to lying down.
 /mob/living/proc/on_standing_up()
 	if(layer == LYING_MOB_LAYER)
 		layer = initial(layer)
+
 	set_density(initial(density)) // We were prone before, so we become dense and things can bump into us again.
+
 	REMOVE_TRAIT(src, TRAIT_UI_BLOCKED, LYING_DOWN_TRAIT)
 	REMOVE_TRAIT(src, TRAIT_PULL_BLOCKED, LYING_DOWN_TRAIT)
-	body_position_pixel_y_offset = 0
 
+	body_position_pixel_y_offset = 0
 
+	clear_alert("lying_down")
 
 //Recursive function to find everything a mob is holding. Really shitty proc tbh.
 /mob/living/get_contents()