extends CharacterBody3D

var movement_speed: float = 3.0

var target: CharacterBody3D
var movement_target_position: Vector3

var skip: bool = false

@onready var navigation_agent: NavigationAgent3D = $NavigationAgent3D

func _ready() -> void:
	first_frame.call_deferred()

func first_frame() -> void:
	actor_setup(999999999)

# determines the closest player and navigate.
func actor_setup(lowest_distance: float) -> void:
	if !skip:
		for child: Node in get_tree().root.get_node("/root/Testmap").get_children():
			if child is Node3D:
				if child.has_method("playerstub") and position.distance_to((child as Node3D).position) < lowest_distance:
					target = child
		skip = true
	
	var dist: float = target.position.distance_to(movement_target_position)
	if movement_target_position != target.position and (dist > 5 or position.distance_to(target.position) <= 5 or position.distance_to(movement_target_position) <= 5):
		movement_target_position = target.position
		navigation_agent.set_target_position(movement_target_position)

func _physics_process(_delta: float) -> void:
	actor_setup(position.distance_to(target.position))
	
	if navigation_agent.is_navigation_finished():
		return
		
	var current_agent_position: Vector3 = global_position
	var next_path_position: Vector3 = navigation_agent.get_next_path_position()
	
	velocity = current_agent_position.direction_to(next_path_position) * movement_speed
	
	if move_and_slide():
		pass