Initial

code/__DEFINES/xeno.dm

@@ -36,6 +36,7 @@
 #define XENO_HITS_TO_DESTROY_WINDOW_FRAME 3
 #define XENO_HITS_TO_DESTROY_R_WINDOW_FRAME 5
 #define XENO_HITS_TO_DESTROY_BOLTED_DOOR 10
+#define XENO_HITS_TO_DESTROY_DOOR 10
 #define XENO_HITS_TO_DESTROY_WELDED_DOOR 15
 #define XENO_HITS_TO_EXPOSE_WIRES_MIN 3
 #define XENO_HITS_TO_EXPOSE_WIRES_MAX 4

code/__DEFINES/xeno_ai.dm

@@ -5,6 +5,7 @@
 #define DISTANCE_PENALTY 1
 #define ASTAR_COST_FUNCTION(n) (abs(n.x - target.x)+abs(n.y - target.y))
 
+#define OPEN_TURF_PENALTY 1
 #define DOOR_PENALTY 3
 #define OBJECT_PENALTY 20
 #define HUMAN_PENALTY 4

code/modules/mob/living/carbon/xenomorph/ai/xeno_ai.dm

@@ -143,7 +143,8 @@ GLOBAL_LIST_INIT(ai_target_limbs, list(
 // Called whenever an obstacle is encountered but xeno_ai_obstacle returned something else than infinite
 // and now it is considered a valid path.
 /atom/proc/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	return
+	X.do_click(src, "", list())
+	return TRUE
 
 /mob/living/carbon/xenomorph/proc/can_move_and_apply_move_delay()
 	// Unable to move, try next time.

code/modules/mob/living/carbon/xenomorph/attack_alien.dm

@@ -517,46 +517,42 @@
 //Prying open doors
 /obj/structure/machinery/door/airlock/attack_alien(mob/living/carbon/xenomorph/M)
 	var/turf/cur_loc = M.loc
-	if(isElectrified())
-		if(shock(M, 100))
-			return XENO_NO_DELAY_ACTION
+
+	. = XENO_NO_DELAY_ACTION
+
+	if(M.claw_type >= CLAW_TYPE_SHARP)
+		M.animation_attack_on(src)
+		playsound(src, 'sound/effects/metalhit.ogg', 25, 1)
+		take_damage(damage_cap / XENO_HITS_TO_DESTROY_DOOR)
+		. = XENO_ATTACK_ACTION
+
+	if(isElectrified() && shock(M, 100))
+		return
 
 	if(!density)
 		to_chat(M, SPAN_WARNING("[src] is already open!"))
-		return XENO_NO_DELAY_ACTION
+		return
 
 	if(heavy)
 		to_chat(M, SPAN_WARNING("[src] is too heavy to open."))
-		return XENO_NO_DELAY_ACTION
+		return
 
 	if(welded)
-		if(M.claw_type >= CLAW_TYPE_SHARP)
-			M.animation_attack_on(src)
-			playsound(src, 'sound/effects/metalhit.ogg', 25, 1)
-			take_damage(damage_cap / XENO_HITS_TO_DESTROY_WELDED_DOOR)
-			return XENO_ATTACK_ACTION
-		else
-			to_chat(M, SPAN_WARNING("[src] is welded shut."))
-			return XENO_NO_DELAY_ACTION
+		to_chat(M, SPAN_WARNING("[src] is welded shut."))
+		return
 
 	if(locked)
-		if(M.claw_type >= CLAW_TYPE_SHARP)
-			M.animation_attack_on(src)
-			playsound(src, 'sound/effects/metalhit.ogg', 25, 1)
-			take_damage(HEALTH_DOOR / XENO_HITS_TO_DESTROY_BOLTED_DOOR)
-			return XENO_ATTACK_ACTION
-		else
-			to_chat(M, SPAN_WARNING("[src] is bolted down tight."))
-			return XENO_NO_DELAY_ACTION
+		to_chat(M, SPAN_WARNING("[src] is bolted down tight."))
+		return
 
 	if(!istype(cur_loc))
-		return XENO_NO_DELAY_ACTION //Some basic logic here
+		return //Some basic logic here
 
 	if(M.action_busy)
-		return XENO_NO_DELAY_ACTION
+		return
 
 	if(M.lying)
-		return XENO_NO_DELAY_ACTION
+		return
 
 	var/delay
 

code/modules/mob/living/carbon/xenomorph/xeno_ai_interaction.dm

@@ -15,24 +15,50 @@ At bare minimum, make sure the relevant checks from parent types gets copied in
 
 */// - Morrow
 
+// OBJECTS
+/obj/structure/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	if(!density)
+		return 0
+
+	if(unslashable && !climbable)
+		return
+
+	return OBJECT_PENALTY
+
+/obj/structure/xeno_ai_act(mob/living/carbon/xenomorph/X)
+	if(unslashable)
+		if(!X.action_busy)
+			do_climb(X)
+		return
+
+	return ..()
 
 // MINERAL DOOR
 /obj/structure/mineral_door/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
 	return DOOR_PENALTY
 
-/obj/structure/mineral_door/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	X.do_click(src, "", list())
-	return TRUE
-
 /obj/structure/mineral_door/resin/xeno_ai_obstacle(mob/living/carbon/xenomorph/xeno, direction, turf/target)
 	if(xeno.hivenumber != hivenumber)
 		return ..()
 	return 0
 
 /obj/structure/mineral_door/resin/xeno_ai_act(mob/living/carbon/xenomorph/acting_xeno)
-	acting_xeno.a_intent = INTENT_HELP
+	if(xeno.hivenumber == hivenumber)
+		acting_xeno.a_intent = INTENT_HELP
 	. = ..()
 
+/// Platforms
+/obj/structure/platform/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	return DOOR_PENALTY
+
 // Poddoors/shutters
 /obj/structure/machinery/door/poddoor/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
 	. = ..()
@@ -61,60 +87,34 @@ At bare minimum, make sure the relevant checks from parent types gets copied in
 
 	return DOOR_PENALTY
 
-/obj/structure/machinery/door/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	X.do_click(src, "", list())
-	return TRUE
-
-// OBJECTS
-/obj/structure/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
-	. = ..()
-	if(!.)
-		return
-
-	if(!density)
-		return 0
-
-	if(unslashable && !climbable)
-		return
-
-	return OBJECT_PENALTY
-
-/obj/structure/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	if(unslashable)
-		if(!X.action_busy)
-			do_climb(X)
-		return
-	X.do_click(src, "", list())
-	return TRUE
-
-
 // HUMANS
 /mob/living/carbon/human/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
 	if(status_flags & GODMODE)
 		return ..()
+
 	return HUMAN_PENALTY
 
 /mob/living/carbon/human/xeno_ai_act(mob/living/carbon/xenomorph/X)
 	if(status_flags & GODMODE)
-		return ..()
-	X.do_click(src, "", list())
-	return TRUE
+		return
+
+	. = ..()
 
 // VEHICLES
 /obj/vehicle/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
-	return VEHICLE_PENALTY
+	. = ..()
+	if(!.)
+		return
 
-/obj/vehicle/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	X.do_click(src, "", list())
-	return TRUE
+	return VEHICLE_PENALTY
 
 // SENTRY
 /obj/structure/machinery/defenses/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
-	return VEHICLE_PENALTY
+	. = ..()
+	if(!.)
+		return
 
-/obj/structure/machinery/defenses/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	X.do_click(src, "", list())
-	return TRUE
+	return VEHICLE_PENALTY
 
 // WINDOW FRAME
 /obj/structure/window_frame/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
@@ -127,8 +127,19 @@ At bare minimum, make sure the relevant checks from parent types gets copied in
 	if(!X.action_busy)
 		do_climb(X)
 
+/obj/structure/barricade/handrail/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	return DOOR_PENALTY
+
 // Avoid barricades if possible.
 /obj/structure/barricade/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
 	return BARRICADE_PENALTY
 
 // FIRE
@@ -138,7 +149,18 @@ At bare minimum, make sure the relevant checks from parent types gets copied in
 
 	return FIRE_PENALTY
 
-// HOLES
-/obj/effect/acid_hole/xeno_ai_act(mob/living/carbon/xenomorph/X)
-	X.do_click(src, "", list())
-	return TRUE
+/// Open turfs, sometimes open turfs are passed back as obstacles due to platforms and such, generally it's fast so very slight penalty mainly for handling subtypes properly
+/turf/open/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	return OPEN_TURF_PENALTY
+
+/// Space, do NOT path into space.
+/turf/open/space/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	return INFINITY