extends TextureRect
var station_array:Array[String]=["测试站点1","测试站点2","测试站点3","测试站点4","测试站点5","测试站点6"]

@export var scroll_text_tscn:PackedScene

@export var StationIndicatorIcon:Texture2D

var StationInsicatorScale:Array[float]=[1,0.85,0.65,0.45]

@export var StationIndicatorNode:Array[Control]=[]

@export var StationIndicatorText:Array[Control]=[]
var indicator_node:Array=[null,null,null,null]

#当前下一站指向的station_index
var now_index:int=0


var animation_time:float=0.5
#通过给的station arr完成初始化
func init():
	for i  in indicator_node.size():
		if indicator_node[i]!=null:
			indicator_node[i][0].queue_free()
			indicator_node[i][1].queue_free()
			indicator_node[i]=null
		
	if station_array.size()>=4:
		for i in 4:
			
			var new_sprite=Sprite2D.new()
			new_sprite.scale=Vector2(1,1)*StationInsicatorScale[i]
			new_sprite.global_position=StationIndicatorNode[i].global_position
			var new_text=scroll_text_tscn.instantiate()
			new_text.global_position=StationIndicatorText[i].global_position
			new_text.size=StationIndicatorText[i].size
			new_text.text=station_array[i]
			if i==0:
				new_text.font_size=60
			else:
				new_text.font_size=50
			new_sprite.texture=StationIndicatorIcon
			add_child(new_sprite)
			add_child(new_text)
			indicator_node[i]=[new_sprite,new_text]
	now_index=0

func _ready() -> void:
	init()

func next():
	var now_next_station_index:int=now_index+1
	if now_next_station_index>=station_array.size():
		return
	if indicator_node[3]!=null:
		var sprite=indicator_node[3][0]
		var text=indicator_node[3][1]
		var tween=create_tween()
		tween.set_parallel().tween_property(sprite,"global_position",StationIndicatorNode[2].global_position,animation_time)
		tween.set_parallel().tween_property(sprite,"scale",Vector2(1,1)*StationInsicatorScale[2],animation_time)
		tween.set_parallel().tween_property(text,"global_position",StationIndicatorText[2].global_position,animation_time)
		tween.set_parallel().tween_property(text,"size",StationIndicatorText[2].size,animation_time)
	if indicator_node[2]!=null:
		var sprite=indicator_node[2][0]
		var text=indicator_node[2][1]
		var tween=create_tween()
		tween.set_parallel().tween_property(sprite,"global_position",StationIndicatorNode[1].global_position,animation_time)
		tween.set_parallel().tween_property(sprite,"scale",Vector2(1,1)*StationInsicatorScale[1],animation_time)
		tween.set_parallel().tween_property(text,"global_position",StationIndicatorText[1].global_position,animation_time)
		tween.set_parallel().tween_property(text,"size",StationIndicatorText[1].size,animation_time)
	if indicator_node[1]!=null:
		var sprite=indicator_node[1][0]
		var text=indicator_node[1][1]
		var tween=create_tween()
		
		tween.set_parallel().tween_property(sprite,"global_position",StationIndicatorNode[0].global_position,animation_time)
		tween.set_parallel().tween_property(sprite,"scale",Vector2(1,1)*StationInsicatorScale[0],animation_time)
		tween.set_parallel().tween_property(text,"global_position",StationIndicatorText[0].global_position,animation_time)
		tween.set_parallel().tween_property(text,"font_size",60,animation_time)
		tween.set_parallel().tween_property(text,"size",StationIndicatorText[0].size,animation_time)
	if indicator_node[0]!=null:
		var sprite=indicator_node[0][0]
		var text=indicator_node[0][1]
		var tween=create_tween()
		tween.set_parallel().tween_property(sprite,"global_position",%mark_bottom.global_position,animation_time)
		tween.set_parallel().tween_property(text,"global_position",%text_mark_bottom.global_position,animation_time)
		tween.set_parallel().tween_property(text,"size",%text_mark_bottom.size,animation_time)
		tween.set_parallel(false).tween_callback(sprite.queue_free)
		tween.set_parallel(false).tween_callback(text.queue_free)
	var need_new_station_index:int=now_index+4
	if need_new_station_index<station_array.size():
		var new_sprite=Sprite2D.new()
		add_child(new_sprite)
		new_sprite.scale=0.01*Vector2(1,1)
		new_sprite.global_position=%mark_top.global_position
		new_sprite.modulate.a=0
		var new_text=scroll_text_tscn.instantiate()
		add_child(new_text)
		new_text.global_position=%text_mark_top.global_position
		new_text.size=%text_mark_top.size
		new_text.font_size=40
		new_text.modulate.a=0
		new_text.text=station_array[need_new_station_index]
		new_sprite.texture=StationIndicatorIcon
		var tween=create_tween()
		tween.set_parallel().tween_property(new_sprite,"global_position",StationIndicatorNode[3].global_position,animation_time)
		tween.set_parallel().tween_property(new_sprite,"scale",Vector2(1,1)*StationInsicatorScale[3],animation_time)
		tween.set_parallel().tween_property(new_sprite,"modulate:a",1,animation_time)
		tween.set_parallel().tween_property(new_text,"global_position",StationIndicatorText[3].global_position,animation_time)
		tween.set_parallel().tween_property(new_text,"size",StationIndicatorText[3].size,animation_time)
		tween.set_parallel().tween_property(new_text,"modulate:a",1,animation_time)
		tween.set_parallel().tween_property(new_text,"font_size",50,animation_time)
		indicator_node.append([new_sprite,new_text])
	else:
		indicator_node.append(null)
	indicator_node.pop_front()
	now_index+=1


func _on_button_pressed() -> void:
	next()
	pass # Replace with function body.