[MIRROR] Metal Vore Solid (#9386)

Co-authored-by: SatinIsle <98125273+SatinIsle@users.noreply.github.com>
Co-authored-by: ShadowLarkens <shadowlarkens@gmail.com>

code/modules/ai/ai_holder_subtypes/simple_mob_ai.dm

@@ -98,6 +98,23 @@
 	step_rand(holder)
 	holder.face_atom(AM)
 
+// Only attacks you if you're in front of it.
+/datum/ai_holder/simple_mob/ranged/guard_limit
+	guard_limit = TRUE
+	returns_home = TRUE
+
+/datum/ai_holder/simple_mob/ranged/guard_limit/pointblank
+	pointblank = TRUE
+
+/datum/ai_holder/simple_mob/ranged/guard_limit/aggressive
+	pointblank = TRUE
+	var/closest_distance = 1
+
+/datum/ai_holder/simple_mob/ranged/guard_limit/kiting
+	pointblank = TRUE // So we don't need to copypaste post_melee_attack().
+	var/run_if_this_close = 4 // If anything gets within this range, it'll try to move away.
+	var/moonwalk = TRUE // If true, mob turns to face the target while kiting, otherwise they turn in the direction they moved towards.
+
 // Switches intents based on specific criteria.
 // Used for special mobs who do different things based on intents (and aren't slimes).
 // Intent switching is generally done in pre_[ranged/special]_attack(), so that the mob can use the right attack for the right time.
@@ -142,6 +159,14 @@
 		return TRUE // We're out in the open, uncloaked, and our target isn't stunned, so lets flee.
 	return FALSE
 
+// Can only target people in view range, will return home
+/datum/ai_holder/simple_mob/melee/guard_limit
+	guard_limit = TRUE
+	returns_home = TRUE
+
+/datum/ai_holder/simple_mob/melee/evasive/guard_limit
+	guard_limit = TRUE
+	returns_home = TRUE
 
 // Simple mobs that aren't hostile, but will fight back.
 /datum/ai_holder/simple_mob/retaliate
@@ -197,3 +222,7 @@
 
 /datum/ai_holder/simple_mob/passive/speedy
 	base_wander_delay = 1
+
+// For setting up possible stealth missions
+/datum/ai_holder/simple_mob/humanoid/hostile/guard_limit
+	guard_limit = TRUE

code/modules/ai/ai_holder_targeting.dm

@@ -10,6 +10,7 @@
 	var/micro_hunt = FALSE					// Will target mobs at or under the micro_hunt_size size, requires vore_hostile to be true
 	var/micro_hunt_size = 0.25
 	var/belly_attack = TRUE					//Mobs attack if they are in a belly!
+	var/guard_limit = FALSE					//Mobs will not acquire targets unless they are in front of them.
 
 	var/atom/movable/target = null			// The thing (mob or object) we're trying to kill.
 	var/atom/movable/preferred_target = null// If set, and if given the chance, we will always prefer to target this over other options.
@@ -52,7 +53,10 @@
 	. = list()
 	if(!has_targets_list)
 		possible_targets = list_targets()
-	for(var/possible_target in possible_targets)
+	for(var/atom/possible_target as anything in possible_targets)
+		if(guard_limit)
+			if((holder.dir == 1 && holder.y >= possible_target.y) || (holder.dir == 2 && holder.y <= possible_target.y) || (holder.dir == 4 && holder.x >= possible_target.x) || (holder.dir == 8 && holder.x <= possible_target.x)) //Ignore targets that are behind you
+				continue
 		if(can_attack(possible_target)) // Can we attack it?
 			. += possible_target
 

code/modules/mob/living/simple_mob/subtypes/humanoid/mercs/mercs.dm

@@ -90,14 +90,23 @@
 	threaten_delay = 30 SECONDS // Mercs will give you 30 seconds to leave or get shot.
 	use_astar = TRUE //CHOMPEdit
 
+/datum/ai_holder/simple_mob/merc/guard_limit
+	guard_limit = TRUE
+
 /datum/ai_holder/simple_mob/merc/ranged
 	pointblank = TRUE		// They get close? Just shoot 'em!
 	firing_lanes = TRUE		// But not your buddies!
 	conserve_ammo = TRUE	// And don't go wasting bullets!
 
+/datum/ai_holder/simple_mob/merc/ranged/guard_limit
+	guard_limit = TRUE
+
 /datum/ai_holder/simple_mob/merc/ranged/sniper
 	vision_range = 14	// We're a person with a long-ranged gun.
 
+/datum/ai_holder/simple_mob/merc/ranged/sniper/guard_limit
+	guard_limit = TRUE
+
 /datum/ai_holder/simple_mob/merc/ranged/sniper/max_range(atom/movable/AM)
 	return holder.ICheckRangedAttack(AM) ? 14 : 1
 
@@ -448,3 +457,42 @@
 		/obj/item/grenade/spawnergrenade/manhacks/mercenary = 50,
 		/obj/item/grenade/spawnergrenade/manhacks/mercenary = 30
 		)
+
+
+////////////////////////////////
+//		Stealth Mission Mercs
+////////////////////////////////
+
+// Most likely to drop a broken weapon matching them, if it's a gun.
+/mob/living/simple_mob/humanoid/merc/melee/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/melee/sword/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/smg/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/laser/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/ionrifle/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/grenadier/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/rifle/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/rifle/mag/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/technician/poi/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/guard_limit
+
+/mob/living/simple_mob/humanoid/merc/ranged/sniper/guard_limit
+	ai_holder_type = /datum/ai_holder/simple_mob/merc/ranged/sniper/guard_limit