Add player and main scene.

main.tscn

@@ -0,0 +1,7 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://player.tscn" type="PackedScene" id=1]
+
+[node name="Main" type="Node"]
+
+[node name="Player" parent="." instance=ExtResource( 1 )]

player.gd

@@ -0,0 +1,13 @@
+extends Area2D
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	pass

player.tscn

@@ -1,3 +1,7 @@
-[gd_scene format=2]
+[gd_scene load_steps=2 format=2]
 
-[node name="player" type="Area2D"]
+[ext_resource path="res://player.gd" type="Script" id=1]
+
+[node name="Player" type="Area2D"]
+position = Vector2( 2, 3 )
+script = ExtResource( 1 )

project.godot

@@ -15,7 +15,7 @@ _global_script_class_icons={
 
 [application]
 
-run/main_scene="res://player.tscn"
+run/main_scene="res://main.tscn"
 
 [autoload]