Misc staging fixes.

code/_onclick/click.dm

@@ -116,11 +116,6 @@
 	var/sdepth = A.storage_depth(src)
 	if((!isturf(A) && A == loc) || (sdepth != -1 && sdepth <= 1))
 		if(holding)
-
-			// AI driven mobs have a melee telegraph that needs to be handled here.
-			if(a_intent == I_HURT && istype(A) && (!do_attack_windup_checking(A) || holding != get_active_held_item()))
-				return TRUE
-
 			var/resolved = holding.resolve_attackby(A, src, params)
 			if(!resolved && A && holding)
 				holding.afterattack(A, src, 1, params) // 1 indicates adjacency
@@ -143,10 +138,6 @@
 		if(A.Adjacent(src)) // see adjacent.dm
 			if(holding)
 
-				// AI driven mobs have a melee telegraph that needs to be handled here.
-				if(a_intent == I_HURT && istype(A) && (!do_attack_windup_checking(A) || holding != get_active_held_item()))
-					return TRUE
-
 				// Return 1 in attackby() to prevent afterattack() effects (when safely moving items for example)
 				var/resolved = holding.resolve_attackby(A, src, params)
 				if(!resolved && A && holding)
@@ -217,18 +208,7 @@
 	if(istype(G) && G.Touch(A,1))
 		return TRUE
 
-	// Pick up items.
-	if(check_dexterity(DEXTERITY_HOLD_ITEM, silent = TRUE))
-		return A.attack_hand(src)
-
-	// TODO: some way to check if we SHOULD be doing an attack windup here;
-	// corgis attacking a tree, for example, will do the windup animation despite
-	// having no interaction or message shown at the end of it.
-	// AI driven mobs have a melee telegraph that needs to be handled here.
-	if(a_intent == I_HURT && istype(A) && !do_attack_windup_checking(A))
-		return TRUE
-
-	return FALSE
+	return A.attack_hand(src)
 
 /*
 	Ranged unarmed attack:

code/_onclick/other_mobs.dm

@@ -8,9 +8,15 @@
 /atom/proc/can_interact_with_storage(user, strict = FALSE)
 	return isliving(user)
 
+/atom/proc/get_required_interaction_dexterity()
+	return DEXTERITY_NONE
+
 /atom/proc/attack_hand(mob/user)
 	SHOULD_CALL_PARENT(TRUE)
 
+	if(!user.check_dexterity(get_required_interaction_dexterity(), silent = TRUE))
+		return FALSE
+
 	if(can_interact_with_storage(user, strict = TRUE) && storage && user.check_dexterity((DEXTERITY_HOLD_ITEM|DEXTERITY_EQUIP_ITEM), TRUE))
 		add_fingerprint(user)
 		storage.open(user)

code/datums/ai/aggressive.dm

@@ -92,10 +92,14 @@
 	return TRUE
 
 /datum/mob_controller/aggressive/proc/attack_target()
+
+	set waitfor = FALSE
+
 	var/atom/target = get_target()
 	if(!istype(target))
 		lose_target()
 		return
+
 	if(isliving(target) && body.buckled_mob == target && (!body.faction || body.buckled_mob.faction != body.faction))
 		body.visible_message(SPAN_DANGER("\The [body] attempts to unseat \the [body.buckled_mob]!"))
 		body.set_dir(pick(global.cardinal))
@@ -107,11 +111,21 @@
 				var/mob/living/victim = target
 				SET_STATUS_MAX(victim, STAT_WEAK, 3)
 		return target
-	if(body.Adjacent(target))
-		body.a_intent = I_HURT
-		body.ClickOn(target)
+
+	if(!body.Adjacent(target))
+		return target
+
+	// AI-driven mobs have a melee telegraph that needs to be handled here.
+	if(!body.do_attack_windup_checking(target))
+		return target
+
+	if(QDELETED(body) || body.incapacitated() || QDELETED(target))
 		return target
 
+	body.a_intent = I_HURT
+	body.ClickOn(target)
+	return target
+
 /datum/mob_controller/aggressive/destroy_surroundings()
 
 	if(!body.can_act())
@@ -174,27 +188,25 @@
 	if(!(. = ..()))
 		return
 
-	if(!only_attack_enemies)
-		if(source)
-			set_target(source)
-			move_to_target(move_only = TRUE)
-		return
-
-	var/list/allies
-	var/list/around = view(body, 7)
-	for(var/atom/movable/A in around)
-		if(A == body || !isliving(A))
-			continue
-		var/mob/living/M = A
-		if(attack_same_faction || M.faction != body.faction)
-			add_enemy(M)
-		else if(istype(M.ai))
-			LAZYADD(allies, M.ai)
-
-	var/list/enemies = get_enemies()
-	if(LAZYLEN(enemies) && LAZYLEN(allies))
-		for(var/datum/mob_controller/ally as anything in allies)
-			ally.add_enemies(enemies)
+	if(only_attack_enemies)
+		var/list/allies
+		var/list/around = view(body, 7)
+		for(var/atom/movable/A in around)
+			if(A == body || !isliving(A))
+				continue
+			var/mob/living/M = A
+			if(attack_same_faction || M.faction != body.faction)
+				add_enemy(M)
+			else if(istype(M.ai))
+				LAZYADD(allies, M.ai)
+		var/list/enemies = get_enemies()
+		if(LAZYLEN(enemies) && LAZYLEN(allies))
+			for(var/datum/mob_controller/ally as anything in allies)
+				ally.add_enemies(enemies)
+
+	if(source)
+		set_target(source)
+		move_to_target(move_only = TRUE)
 
 /datum/mob_controller/aggressive/move_to_target(var/move_only = FALSE)
 	if(!body.can_act())

code/game/objects/items/__item.dm

@@ -96,7 +96,8 @@
 	var/paint_verb
 
 	/// What dexterity is required to attack with this item?
-	var/needs_attack_dexterity = DEXTERITY_WIELD_ITEM
+	var/needs_attack_dexterity      = DEXTERITY_WIELD_ITEM
+	var/needs_interaction_dexterity = DEXTERITY_HOLD_ITEM
 
 	/// Vars relating to wielding the item with two or more hands.
 	var/can_be_twohanded        = FALSE

code/game/objects/items/_item_melting.dm

@@ -16,16 +16,22 @@
 		try_burn_wearer(holder, holder.get_equipped_slot_for_item(src))
 
 	// Temp gate until generalized temperature-based melting works properly.
-	if(istype(loc, /obj/item/chems/crucible))
-		// Check if this is meltable at all.
-		var/list/meltable_materials
-		for(var/mat in matter)
-			var/decl/material/melt_material = GET_DECL(mat)
-			if(!isnull(melt_material.melting_point) && temperature >= melt_material.melting_point)
-				LAZYDISTINCTADD(meltable_materials, melt_material)
-		if(length(meltable_materials))
-			. = null // Don't return PROCESS_KILL here.
-			handle_melting(meltable_materials)
+	var/static/list/_melting_containers = list(
+		/obj/item/chems/crucible,
+		/obj/item/organ/internal/stomach
+	)
+	if(!is_type_in_list(loc, _melting_containers))
+		return
+
+	// Check if this is meltable at all.
+	var/list/meltable_materials
+	for(var/mat in matter)
+		var/decl/material/melt_material = GET_DECL(mat)
+		if(!isnull(melt_material.melting_point) && temperature >= melt_material.melting_point)
+			LAZYDISTINCTADD(meltable_materials, melt_material)
+	if(length(meltable_materials))
+		. = null // Don't return PROCESS_KILL here.
+		handle_melting(meltable_materials)
 
 /obj/item/place_melted_product(list/meltable_materials)
 

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

@@ -283,12 +283,12 @@
 /mob/living/bot/proc/lookForTargets()
 	return
 
-/mob/living/bot/proc/confirmTarget(var/atom/A)
-	if(A.invisibility >= INVISIBILITY_LEVEL_ONE)
+/mob/living/bot/proc/confirmTarget(atom/target)
+	if(target.invisibility >= INVISIBILITY_LEVEL_ONE)
 		return 0
-	if(A in ignore_list)
+	if(target in ignore_list)
 		return 0
-	if(!A.loc)
+	if(!target.loc)
 		return 0
 	return 1
 

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

@@ -1,5 +1,5 @@
 /mob/living/bot/cleanbot
-	name = "Cleanbot"
+	name = "cleanbot"
 	desc = "A little cleaning robot, he looks so excited!"
 	icon = 'icons/mob/bot/cleanbot.dmi'
 	icon_state = "cleanbot0"
@@ -35,44 +35,47 @@
 			ignore_list -= g
 
 /mob/living/bot/cleanbot/lookForTargets()
-	for(var/obj/effect/decal/cleanable/D in view(world.view + 1, src))
-		if(confirmTarget(D))
-			target = D
+	for(var/obj/effect/decal/cleanable/decal in view(world.view + 1, src))
+		if(confirmTarget(decal))
+			target = decal
 			playsound(src, 'sound/machines/boop1.ogg', 30)
 			return
 
-/mob/living/bot/cleanbot/confirmTarget(var/obj/effect/decal/cleanable/D)
-	if(!..())
-		return 0
-	for(var/T in target_types)
-		if(istype(D, T))
-			return 1
-	return 0
+/mob/living/bot/cleanbot/confirmTarget(atom/target)
+	. = ..()
+	if(.)
+		var/turf/decal_turf = get_turf(target)
+		if(!istype(decal_turf) || decal_turf.contains_dense_objects())
+			return FALSE // Stop trying to clean under full-tile windows.
+		if(istype(target, /obj/effect/decal/cleanable/dirt))
+			var/obj/effect/decal/cleanable/dirt/dirt = target
+			return dirt.dirt_amount >= 50 // Stop trying to clean invisible dirt.
+		return is_type_in_list(target, target_types)
 
 /mob/living/bot/cleanbot/handleAdjacentTarget()
 	if(get_turf(target) == src.loc)
 		UnarmedAttack(target, TRUE)
 
-/mob/living/bot/cleanbot/UnarmedAttack(var/obj/effect/decal/cleanable/D, var/proximity)
+/mob/living/bot/cleanbot/UnarmedAttack(var/obj/effect/decal/cleanable/decal, var/proximity)
 
 	. = ..()
 	if(.)
 		return
 
-	if(!istype(D))
+	if(!istype(decal))
 		return TRUE
 
-	if(D.loc != loc)
+	if(decal.loc != loc)
 		return FALSE
 
 	busy = 1
-	visible_message("\The [src] begins to clean up \the [D].")
+	visible_message("\The [src] begins to clean up \the [decal].")
 	update_icon()
-	var/cleantime = istype(D, /obj/effect/decal/cleanable/dirt) ? 10 : 50
-	if(do_after(src, cleantime, progress = 0) && !QDELETED(D))
-		if(D == target)
+	var/cleantime = istype(decal, /obj/effect/decal/cleanable/dirt) ? 10 : 50
+	if(do_after(src, cleantime, progress = 0) && !QDELETED(decal))
+		if(decal == target)
 			target = null
-		qdel(D)
+		qdel(decal)
 	playsound(src, 'sound/machines/boop2.ogg', 30)
 	busy = 0
 	update_icon()

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

@@ -240,21 +240,21 @@
 		if(prob(50))
 			new /obj/item/robot_parts/l_arm(my_turf)
 
-/mob/living/bot/farmbot/confirmTarget(var/atom/targ)
+/mob/living/bot/farmbot/confirmTarget(atom/target)
 	if(!..())
 		return 0
 
-	if(emagged && ishuman(targ))
-		if(targ in view(world.view, src))
+	if(emagged && ishuman(target))
+		if(target in view(world.view, src))
 			return 1
 		return 0
 
-	if(istype(targ, /obj/structure/hygiene/sink))
+	if(istype(target, /obj/structure/hygiene/sink))
 		if(!tank || tank.reagents.total_volume >= tank.reagents.maximum_volume)
 			return 0
 		return 1
 
-	var/obj/machinery/portable_atmospherics/hydroponics/tray = targ
+	var/obj/machinery/portable_atmospherics/hydroponics/tray = target
 	if(!istype(tray))
 		return 0
 

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

@@ -109,28 +109,24 @@
 				target = S
 				return
 
-/mob/living/bot/floorbot/confirmTarget(var/atom/A) // The fact that we do some checks twice may seem confusing but remember that the bot's settings may be toggled while it's moving and we want them to stop in that case
+/mob/living/bot/floorbot/confirmTarget(atom/target) // The fact that we do some checks twice may seem confusing but remember that the bot's settings may be toggled while it's moving and we want them to stop in that case
 	anchored = FALSE
 	if(!..())
 		return 0
 
-	if(istype(A, /obj/item/stack/tile/floor))
+	if(istype(target, /obj/item/stack/tile/floor))
 		return (amount < maxAmount && eattiles)
 
-	if(istype(A, /obj/item/stack/material))
-		var/obj/item/stack/material/S = A
+	if(istype(target, /obj/item/stack/material))
+		var/obj/item/stack/material/S = target
 		if(S.material?.type == /decl/material/solid/metal/steel)
 			return (amount < maxAmount && maketiles)
 
-	if(A.loc.name == "Space")
-		return 0
+	var/turf/floor/my_turf = target
+	if(!istype(my_turf) || (isturf(my_turf) && my_turf.is_open()))
+		return FALSE
 
-	var/turf/floor/T = A
-	if(istype(T))
-		if(emagged)
-			return 1
-		else
-			return (amount && (T.is_floor_damaged() || (improvefloors && !T.has_flooring())))
+	return emagged || (amount && (my_turf.is_floor_damaged() || (improvefloors && !my_turf.has_flooring())))
 
 /mob/living/bot/floorbot/UnarmedAttack(var/atom/A, var/proximity)