Attempts to fix phantom bot path overlays (#19360)

* a

* more things

* two more cheeky spots

code/modules/mob/living/simple_animal/bot/bot.dm

@@ -184,6 +184,7 @@
 /mob/living/simple_animal/bot/Destroy()
 	if(paicard)
 		ejectpai()
+	set_path(null)
 	if(path_hud)
 		QDEL_NULL(path_hud)
 		path_hud = null
@@ -593,6 +594,7 @@ Pass a positive integer as an argument to override a bot's default speed.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 /mob/living/simple_animal/bot/proc/bot_patrol()
+	set_path(null)
 	patrol_step()
 	addtimer(CALLBACK(src, .proc/do_patrol), 5)
 
@@ -601,7 +603,7 @@ Pass a positive integer as an argument to override a bot's default speed.
 		patrol_step()
 
 /mob/living/simple_animal/bot/proc/start_patrol()
-
+	set_path(null)
 	if(tries >= BOT_STEP_MAX_RETRIES) //Bot is trapped, so stop trying to patrol.
 		auto_patrol = FALSE
 		tries = 0
@@ -1035,6 +1037,7 @@ Pass a positive integer as an argument to override a bot's default speed.
 	for(var/V in path_huds_watching_me)
 		var/datum/atom_hud/H = V
 		H.remove_from_hud(src)
+	clear_path_image()
 
 	var/list/path_images = hud_list[DIAG_PATH_HUD]
 	QDEL_LIST(path_images)
@@ -1088,5 +1091,13 @@ Pass a positive integer as an argument to override a bot's default speed.
 		I.icon_state = null
 	path.Cut(1, 2)
 
+/mob/living/simple_animal/bot/proc/clear_path_image()
+	if(!path || !length(path))
+		return
+	for(var/P in path)
+		var/image/I = path[P]
+		if(I?.icon_state)
+			I.icon_state = null
+
 /mob/living/simple_animal/bot/proc/drop_part(obj/item/drop_item, dropzone)
 	new drop_item(dropzone)

code/modules/mob/living/simple_animal/bot/ed209bot.dm

@@ -91,6 +91,7 @@
 	oldtarget_name = null
 	anchored = FALSE
 	walk_to(src,0)
+	set_path(null)
 	last_found = world.time
 	set_weapon()
 
@@ -245,6 +246,7 @@
 
 		if(BOT_IDLE)		// idle
 			walk_to(src,0)
+			set_path(null)
 			if(!lasercolor) //lasertag bots don't want to arrest anyone
 				look_for_perp()	// see if any criminals are in range
 			if(!mode && auto_patrol)	// still idle, and set to patrol
@@ -254,6 +256,7 @@
 			// if can't reach perp for long enough, go idle
 			if(frustration >= 8)
 				walk_to(src,0)
+				set_path(null)
 				back_to_idle()
 
 			if(target)		// make sure target exists

code/modules/mob/living/simple_animal/bot/griefsky.dm

@@ -109,6 +109,7 @@
 		if(BOT_IDLE)		// idle
 			icon_state = "griefsky1"
 			walk_to(src,0)
+			set_path(null)
 			look_for_perp()	// see if any criminals are in range
 			if(!mode && auto_patrol)	// still idle, and set to patrol
 				mode = BOT_START_PATROL	// switch to patrol mode
@@ -117,6 +118,7 @@
 			playsound(loc,'sound/effects/spinsabre.ogg',50,1,-1)
 			if(frustration >= frustration_number) // general beepsky doesn't give up so easily, jedi scum
 				walk_to(src,0)
+				set_path(null)
 				back_to_idle()
 				return
 			if(target)		// make sure target exists

code/modules/mob/living/simple_animal/bot/secbot.dm

@@ -107,6 +107,7 @@
 	oldtarget_name = null
 	anchored = FALSE
 	walk_to(src,0)
+	set_path(null)
 	last_found = world.time
 
 /mob/living/simple_animal/bot/secbot/set_custom_texts()
@@ -306,6 +307,7 @@
 	switch(mode)
 		if(BOT_IDLE)		// idle
 			walk_to(src,0)
+			set_path(null)
 			look_for_perp()	// see if any criminals are in range
 			if(!mode && auto_patrol)	// still idle, and set to patrol
 				mode = BOT_START_PATROL	// switch to patrol mode
@@ -314,6 +316,7 @@
 			// if can't reach perp for long enough, go idle
 			if(frustration >= 8)
 				walk_to(src,0)
+				set_path(null)
 				back_to_idle()
 				return
 

code/modules/mob/living/simple_animal/bot/syndicate.dm

@@ -82,12 +82,14 @@
 	switch(mode)
 		if(BOT_IDLE)
 			walk_to(src,0)
+			set_path(null)
 			look_for_perp()
 			if(!mode && auto_patrol)
 				mode = BOT_START_PATROL
 		if(BOT_HUNT)
 			if(frustration >= 8)
 				walk_to(src,0)
+				set_path(null)
 				back_to_idle()
 			if(target)
 				if(isliving(target))