godot-psd-training/sceen/people/peopleWalkFollow.gd

extends Node3D

##玩家
class_name  PlayerPathFollow

@onready var player: Player = $Player

@onready var path_3d: Path3D = $Path3D

##生成时候的全局位置坐标，用于之后player偏移量计算
var buildPos = Vector3()

var speed:float = 5

#生成时候的id
var id = 0

##设置路线点坐标
func setPathPoints(points : Array,angle :Vector3 = Vector3()) -> void:
	var curve = Curve3D.new()
	for index in range(points.size()):
		if angle != null and index ==0 :
			curve.add_point(points[index],Vector3(),angle)
		if  index > 0 :
			curve.add_point(points[index])
	path_3d.curve = curve
	$Path3D/PathFollow3D.progress = 0

##沿路线走
func peopleBeginWalk() -> void:
	player.currentExerciseType = player.Exercise_type.pathFollow
	if not $Path3D/PathFollowTimer.is_inside_tree() :
		return
	$Path3D/PathFollowTimer.start()
	$Player.state_machine.change_state("Walk")

##沿路线停
func peopleStopWalk()-> void:
	$Path3D/PathFollowTimer.stop()
	$Player.state_machine.change_state("Idle")

func _on_path_follow_timer_timeout() -> void:
	var lastProgress = $Path3D/PathFollow3D.progress
	$Path3D/PathFollow3D.progress += 0.068 * speed
	if lastProgress == $Path3D/PathFollow3D.progress and !$Path3D/PathFollow3D.loop :
		peopleStopWalk()
		player.ArriveTargetPos.emit()
		player.currentExerciseType = player.Exercise_type.no


func _on_player_area_enter(area: Area3D) -> void:
	if player.currentExerciseType == player.Exercise_type.pathFollow and (area.is_in_group('needStopWalk') or area.is_in_group('player')):
		peopleStopWalk()


func _on_player_area_exit(area: Area3D) -> void:
	if player.currentExerciseType == player.Exercise_type.pathFollow and (area.is_in_group('needStopWalk') or area.is_in_group('player')) :
		await get_tree().create_timer(0.5).timeout
		peopleBeginWalk()