extends CharacterBody3D
##玩家
class_name  Player

@onready var people: Node3D = $people

@onready var state_machine: StateMachine = $StateMachine
##导航
@onready var navigation_agent_3d: NavigationAgent3D = $NavigationAgent3D

var speed:float = 4
var stop_distance:float = 1

signal ArriveTargetPos
##设置目标位(寻路方式运动)
func setTargetPos(targetPos:Vector3,stopDistance = 1)-> void:
	stop_distance = stopDistance
	navigation_agent_3d.target_position = targetPos
	navigation_agent_3d.target_position =navigation_agent_3d.get_final_position()

##去目标位
func goToTarget()-> void:
	$NavigationTimer.start()

##停止移动
func stopToTarget()-> void:
	$NavigationTimer.stop()
	state_machine.change_state("Idle")

func _on_navigation_timer_timeout() -> void:
	var direction_3d = (navigation_agent_3d.get_next_path_position() - global_position).normalized()
	velocity = direction_3d*speed
	look_at_from_position(global_position, navigation_agent_3d.get_next_path_position())
	if navigation_agent_3d.distance_to_target() > stop_distance :
		move_and_slide()
		state_machine.change_state("Walk")
	else :
		stopToTarget()
		ArriveTargetPos.emit()


##区域碰撞检测相关
signal AreaEnter(area: Area3D)

signal AreaExit(area: Area3D)

func _on_area_3d_area_entered(area: Area3D) -> void:
	AreaEnter.emit(area)


func _on_area_3d_area_exited(area: Area3D) -> void:
	AreaExit.emit(area)