Refactor the main scene architecture

Allow usage of the full rect feature of the Background scene.

Main.tscn

@@ -1,8 +1,8 @@
 [gd_scene load_steps=9 format=2]
 
-[ext_resource path="res://Main.gd" type="Script" id=1]
-[ext_resource path="res://Enemy.tscn" type="PackedScene" id=2]
-[ext_resource path="res://Background.tscn" type="PackedScene" id=3]
+[ext_resource path="res://Background.tscn" type="PackedScene" id=1]
+[ext_resource path="res://Main.gd" type="Script" id=2]
+[ext_resource path="res://Enemy.tscn" type="PackedScene" id=3]
 [ext_resource path="res://Player.tscn" type="PackedScene" id=4]
 [ext_resource path="res://HUD.tscn" type="PackedScene" id=5]
 [ext_resource path="res://dodge_assets/art/House In a Forest Loop.ogg" type="AudioStream" id=6]
@@ -13,50 +13,50 @@ _data = {
 "points": PoolVector2Array( 0, 0, 0, 0, -1.05261, 2.78944, 0, 0, 0, 0, 477.895, 2.78944, 0, 0, 0, 0, 460.055, 715.427, 0, 0, 0, 0, 5.76184, 708.778, 0, 0, 0, 0, -1.05261, 2.78944 )
 }
 
-[node name="Main" type="Node2D"]
-script = ExtResource( 1 )
+[node name="Root" type="Node"]
+
+[node name="Background" parent="." instance=ExtResource( 1 )]
+rect_min_size = Vector2( 100, 100 )
+
+[node name="Main" type="Node2D" parent="."]
+script = ExtResource( 2 )
 __meta__ = {
 "_edit_group_": true
 }
-Mob = ExtResource( 2 )
-
-[node name="Background" parent="." instance=ExtResource( 3 )]
-margin_right = 504.0
-margin_bottom = 748.0
-rect_min_size = Vector2( 100, 100 )
+Mob = ExtResource( 3 )
 
-[node name="MobTimer" type="Timer" parent="."]
+[node name="MobTimer" type="Timer" parent="Main"]
 wait_time = 0.53
 
-[node name="ScoreTimer" type="Timer" parent="."]
+[node name="ScoreTimer" type="Timer" parent="Main"]
 
-[node name="StartTimer" type="Timer" parent="."]
+[node name="StartTimer" type="Timer" parent="Main"]
 wait_time = 2.41
 one_shot = true
 
-[node name="StartPositon" type="Position2D" parent="."]
+[node name="StartPositon" type="Position2D" parent="Main"]
 position = Vector2( 245.263, 375.79 )
 
-[node name="MobPath" type="Path2D" parent="."]
+[node name="MobPath" type="Path2D" parent="Main"]
 curve = SubResource( 1 )
 
-[node name="MobSpawnLocation" type="PathFollow2D" parent="MobPath"]
+[node name="MobSpawnLocation" type="PathFollow2D" parent="Main/MobPath"]
 position = Vector2( -1.05261, 2.78944 )
 rotation = -6.07153e-08
 
-[node name="Player" parent="." instance=ExtResource( 4 )]
+[node name="Player" parent="Main" instance=ExtResource( 4 )]
 position = Vector2( 245.983, 380.055 )
 
-[node name="HUD" parent="." instance=ExtResource( 5 )]
+[node name="HUD" parent="Main" instance=ExtResource( 5 )]
 
-[node name="Music" type="AudioStreamPlayer" parent="."]
+[node name="Music" type="AudioStreamPlayer" parent="Main"]
 stream = ExtResource( 6 )
 
-[node name="DeathSound" type="AudioStreamPlayer" parent="."]
+[node name="DeathSound" type="AudioStreamPlayer" parent="Main"]
 stream = ExtResource( 7 )
-[connection signal="timeout" from="MobTimer" to="." method="_on_MobTimer_timeout"]
-[connection signal="timeout" from="ScoreTimer" to="." method="_on_ScoreTimer_timeout"]
-[connection signal="timeout" from="StartTimer" to="Player" method="spawn"]
-[connection signal="timeout" from="StartTimer" to="." method="_on_StartTimer_timeout"]
-[connection signal="hit" from="Player" to="." method="game_over"]
-[connection signal="start_game" from="HUD" to="." method="new_game"]
+[connection signal="timeout" from="Main/MobTimer" to="Main" method="_on_MobTimer_timeout"]
+[connection signal="timeout" from="Main/ScoreTimer" to="Main" method="_on_ScoreTimer_timeout"]
+[connection signal="timeout" from="Main/StartTimer" to="Main/Player" method="spawn"]
+[connection signal="timeout" from="Main/StartTimer" to="Main" method="_on_StartTimer_timeout"]
+[connection signal="hit" from="Main/Player" to="Main" method="game_over"]
+[connection signal="start_game" from="Main/HUD" to="Main" method="new_game"]