extends Node3D

##车
class_name  Train
@onready var train_animation_player: AnimationPlayer = $"../trainAnimationPlayer"

## 车的类型枚举
enum TrainType{
	four = 2,# 4编组
	six = 4,#6编组
}

@export var trainType:TrainType = TrainType.four

## 车的状态枚举
enum Train_STATE{
	come,# 进站
	comeAndStop,# 进站且停稳
	leave,# 出站
}

##车的状态
@onready var trainState : Train_STATE = Train_STATE.leave :
	set(value):
		if trainState != value:
			trainState = value
			if trainState == Train_STATE.come :
				train_animation_player.play("trainCome")
			elif trainState == Train_STATE.leave :
				train_animation_player.play("trainLeave")


##进站停车
func trainCome ()-> void:
	trainState=Train_STATE.come


##出站
func trainLeave ()-> void:
	trainState=Train_STATE.leave
	

func _on_train_animation_player_animation_finished(anim_name: StringName) -> void:
	if anim_name == 'trainCome' :
		trainState = Train_STATE.comeAndStop


var leftTrainDoorALL = []

##开左侧车门
func openLeftTrainDoorALL ()-> void:
	for child in leftTrainDoorALL:
			child.openTrainDoor()

##关左侧车门
func closeLeftTrainDoorALL ()-> void:
	for child in leftTrainDoorALL:
			child.closeTrainDoor()

func _ready() -> void:
	var trainDoor_scene = preload("res://sceen/train/trainDoor.tscn")
	var lasttrainDoorPosX = -4.385
	for i in range(1, (trainType+2)*4+1):
		##左侧有动画的车门
		var trainDoorInstance = trainDoor_scene.instantiate()
		add_child(trainDoorInstance)
		leftTrainDoorALL.append(trainDoorInstance)
		trainDoorInstance.connect("trainDoorOpenSignal",Callable($"..","emitTrainDoorOpenSignal"))
		trainDoorInstance.connect("trainDoorCloseSignal",Callable($"..","emitTrainDoorCloseSignal"))
		if i % 4 ==1 and i != 1:
			trainDoorInstance.position.x=lasttrainDoorPosX+6.104
		else:
			trainDoorInstance.position.x=lasttrainDoorPosX+4.385
		##右侧无动画的车门
		if i>1:
			var copyNoMoveDoor = $NoMoveDoor.duplicate()
			add_child(copyNoMoveDoor)
			copyNoMoveDoor.position.x = lasttrainDoorPosX
		lasttrainDoorPosX = trainDoorInstance.position.x
		trainDoorInstance.name = 'trainDoor{0}'.format([i])
	for i in range(1, trainType):
		var copyTrainBody = $TrainBody.duplicate()
		$".".add_child(copyTrainBody)
		copyTrainBody.position.x=19.259*(i+1)
	$TrainHeadH.position.x += 19.259*(trainType-1)