camera as its own scene and not part of main

Scenes/Camera/camera_controller.gd

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+extends Node2D
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	if Input.is_action_pressed("MoveUp"):
+		global_position += Vector2.UP * 2
+	if Input.is_action_pressed("MoveDown"):
+		global_position += Vector2.DOWN * 2
+	if Input.is_action_pressed("MoveLeft"):
+		global_position += Vector2.LEFT * 2
+	if Input.is_action_pressed("MoveRight"):
+		global_position += Vector2.RIGHT * 2

Scenes/Camera/camera_controller.gd.uid

@@ -0,0 +1 @@
+uid://brublmhrsdc7l

Scenes/Camera/camera_controller.tscn

@@ -0,0 +1,17 @@
+[gd_scene load_steps=4 format=3 uid="uid://bfvijh611aggp"]
+
+[ext_resource type="Script" uid="uid://brublmhrsdc7l" path="res://Scenes/Camera/camera_controller.gd" id="1_ig7ij"]
+[ext_resource type="Script" uid="uid://xrddv2epi3ty" path="res://addons/smartcamera2D/SmartCamera2D.gd" id="2_du7i2"]
+[ext_resource type="Texture2D" uid="uid://bq6ud1dmn8fds" path="res://addons/smartcamera2D/Camera2D.svg" id="3_bg4ca"]
+
+[node name="CameraController" type="Node2D"]
+script = ExtResource("1_ig7ij")
+metadata/_edit_group_ = true
+
+[node name="SmartCamera2D" type="Camera2D" parent="."]
+script = ExtResource("2_du7i2")
+target = NodePath("..")
+metadata/_custom_type_script = "uid://xrddv2epi3ty"
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+texture = ExtResource("3_bg4ca")