ep3_adventurer_ai_war_travel_effect

ep3_adventurer_ai_war_travel_effect = {
	$ADVENTURER$.domicile.domicile_location = { save_scope_as = current_location } # Since passed scopes can't be used in square_distance
	$WAR_TARGET$ = { # Find closest neighboring realm, and its closest county, to you, and go there
		ordered_neighboring_and_across_water_top_liege_realm_owner = {
			limit = {
				# Always prefer not across water, but allow it in edge cases
				save_temporary_scope_as = war_neighbour_temp
				$WAR_TARGET$ = {
					any_neighboring_top_liege_realm_owner = { this = scope:war_neighbour_temp }
				}
			}
			alternative_limit = { always = yes }
			order_by = {
				value = 0
				subtract = "capital_county.squared_distance(scope:current_location)"
			}
			save_scope_as = war_neighbour
			ordered_sub_realm_county = {
				limit = {
					any_neighboring_county = {
						holder ?= {
							OR = {
								this = $WAR_TARGET$
								target_is_liege_or_above = $WAR_TARGET$
							}
						}
					}
				}
				order_by = {
					value = 0
					subtract = "title_province.squared_distance(scope:current_location)"
				}
				save_scope_as = war_stage
			}
		}
	}
	save_scope_value_as = { # Approx provisions for journey
		name = lammp_travel_provisions
		value = {
			value = "scope:current_location.squared_distance(scope:war_stage.title_province)"
			divide = 300
		}
	}
	$ADVENTURER$ = {
		domicile = { # the AI doesn't have to know how to use provisions efficiently, so just add a couple so that they don't suicide
			if = {
				limit = { provisions < scope:lammp_travel_provisions }
				change_provisions = scope:lammp_travel_provisions
			}
		}
		start_travel_plan = {
			destination = scope:war_stage.title_province
			travel_with_domicile = yes
			players_use_planner = no
			return_trip = no
			on_arrival_destinations = all
			on_arrival_on_action = on_adventurer_ai_war_target_arrival
		}
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_story_cycle_adventurer_ai_scripted_effects.txt.