extends Node

@export var grid: Resource

@onready var _Map: Node = $Map
@onready var _Camera = $CameraController

# Units
var _UnitScene = preload("res://Scenes/Unit/unit.tscn")
var _Units: Array[Unit] = []

# MovingMarker
var _MovingMarkerScene = preload("res://Scenes/Unit/marker.tscn")
var _MovingMarker: Node2D = _MovingMarkerScene.instantiate()
#@export var mapSize: int = 15

@onready var UnitCamera: SmartCamera2D = $SmartCamera2D

@onready var GroundLayer: TileMapLayer = $Map/Ground

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
#	add_child(_MovingMarker)
#	_MovingMarker.hide()
#	
	# create unit at local position (50, 50) => eg mouse position
	_createUnit(GroundLayer.local_to_map(Vector2i(50, 50)))
	# create unit at map position (50, 50) => tile x = 50, y = 50 in the map
	_createUnit(GroundLayer.map_to_local(Vector2i(50,50)))
	
	for unit in _Units:
		add_child(unit)

#	$CameraController.position = get_viewport().get_camera_2d().get_screen_center_position()
	var firstUnit: Node2D = _Units[0]
#	if firstUnit.is_node_ready():
#		UnitCamera.target = _Units[0].get_path_to(get_parent())
#	UnitCamera.target_node = _Units[0]
	
	pass
	

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	pass

func _createUnit(pos: Vector2i):
	var newUnit = _UnitScene.instantiate()
	newUnit.set("_spawnPosition", pos)
	_Units.append(newUnit as Unit)

func _input(event: InputEvent) -> void:
	if event.is_action_pressed("SetMarker"):
		print("Action is SetMarker")
#		_MovingMarker.global_position = _getMousePosition(event).position
		_MovingMarker.position = GroundLayer.local_to_map(event.position)
		_MovingMarker.show()


func _getScreenCenter():
	return get_viewport().get_camera_2d().get_screen_center_position()

	
func _getMousePosition(event: InputEvent):
	return get_viewport().get_camera_2d().make_input_local(event)