Watcher nerf (#6237)

# About the pull request
Watcher facehugger strain now takes damage off weeds the same as the
base variant
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# Explain why it's good for the game
It's a straight up upgrade to the base variant + Metagaming afk marines
\ open cades from ghost is cancer
# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl:
balance: Watcher is now immobilized when zoomed out and loses health off
weeds when not zoomed out
/:cl:

---------

Co-authored-by: Drathek <[email protected]>

code/modules/mob/living/carbon/xenomorph/abilities/ability_helper_procs.dm

@@ -195,6 +195,10 @@
 			client.pixel_x = -viewoffset
 			client.pixel_y = 0
 
+	for (var/datum/action/xeno_action/onclick/toggle_long_range/action in actions)
+		action.on_zoom_in()
+		return
+
 /mob/living/carbon/xenomorph/proc/zoom_out()
 	if(!client)
 		return

code/modules/mob/living/carbon/xenomorph/abilities/facehugger/facehugger_abilities.dm

@@ -17,3 +17,8 @@
 	freeze_time = 5
 	freeze_play_sound = FALSE
 	can_be_shield_blocked = TRUE
+
+/datum/action/xeno_action/onclick/toggle_long_range/facehugger
+	handles_movement = FALSE
+	should_delay = FALSE
+	ability_primacy = XENO_PRIMARY_ACTION_3

code/modules/mob/living/carbon/xenomorph/abilities/facehugger/facehugger_powers.dm

@@ -25,4 +25,22 @@
 		if(current_airlock.density) //if its CLOSED YOU'RE SCUTTLING AND CANNOT POUNCE!!!
 			to_chat(owner, SPAN_WARNING("We cannot do that while squeezing and scuttling!"))
 			return FALSE
+
+	if(HAS_TRAIT(owner, TRAIT_IMMOBILIZED))
+		to_chat(owner, SPAN_WARNING("We cannot do that while immobilized!"))
+		return FALSE
+
 	return ..()
+
+/datum/action/xeno_action/onclick/toggle_long_range/facehugger/on_zoom_out()
+	. = ..()
+
+	var/mob/living/carbon/xenomorph/facehugger/facehugger = owner
+	REMOVE_TRAIT(facehugger, TRAIT_IMMOBILIZED, TRAIT_SOURCE_ABILITY("Long-Range Sight"))
+
+/datum/action/xeno_action/onclick/toggle_long_range/facehugger/on_zoom_in()
+	. = ..()
+
+	var/mob/living/carbon/xenomorph/facehugger/facehugger = owner
+	ADD_TRAIT(facehugger, TRAIT_IMMOBILIZED, TRAIT_SOURCE_ABILITY("Long-Range Sight"))
+

code/modules/mob/living/carbon/xenomorph/abilities/general_abilities.dm

@@ -329,6 +329,9 @@
 		xeno.recalculate_speed()
 	button.icon_state = "template"
 
+/datum/action/xeno_action/onclick/toggle_long_range/proc/on_zoom_in()
+	return
+
 /datum/action/xeno_action/onclick/toggle_long_range/proc/handle_mob_move_or_look(mob/living/carbon/xenomorph/xeno, actually_moving, direction, specific_direction)
 	SIGNAL_HANDLER
 	movement_buffer--

code/modules/mob/living/carbon/xenomorph/strains/castes/facehugger/watcher.dm

@@ -1,13 +1,13 @@
 /datum/xeno_strain/watcher
 	name = FACEHUGGER_WATCHER
-	description = "You lose your ability to hide in exchange to see further and the ability to no longer take damage outside of weeds. This enables you to stalk your host from a distance and wait for the perfect oppertunity to strike."
+	description = "You lose your ability to hide in exchange to see further. This enables you to stalk your host from a distance and wait for the perfect oppertunity to strike."
 	flavor_description = "No need to hide when you can see the danger."
 
 	actions_to_remove = list(
 		/datum/action/xeno_action/onclick/xenohide,
 	)
 	actions_to_add = list(
-		/datum/action/xeno_action/onclick/toggle_long_range/runner,
+		/datum/action/xeno_action/onclick/toggle_long_range/facehugger,
 	)
 
 	behavior_delegate_type = /datum/behavior_delegate/facehugger_watcher
@@ -19,3 +19,13 @@
 // This has no special effects, it's just here to skip `/datum/behavior_delegate/facehugger_base/on_life()`.
 /datum/behavior_delegate/facehugger_watcher
 	name = "Watcher Facehugger Behavior Delegate"
+
+/datum/behavior_delegate/facehugger_watcher/on_life()
+	// Sap health if we're standing, not on weeds, and not zoomed out
+	if(bound_xeno.body_position != STANDING_UP)
+		return
+	if(bound_xeno.is_zoomed)
+		return
+	if(locate(/obj/effect/alien/weeds) in get_turf(bound_xeno))
+		return
+	bound_xeno.adjustBruteLoss(1)