Recoded the switches to work in a more coherent way.

scenes/Main.tscn

@@ -14,3 +14,5 @@ script = ExtResource("1_wd8h7")
 [node name="Curtains" type="CanvasLayer" parent="."]
 
 [node name="Post" type="CanvasLayer" parent="."]
+
+[node name="Timer" type="Timer" parent="."]

scenes/Player.tscn

@@ -159,6 +159,8 @@ scale = Vector2(8, 8)
 mesh = SubResource("PrismMesh_43iim")
 
 [node name="Camera2D" type="Camera2D" parent="."]
+limit_top = -700
+limit_bottom = 700
 limit_smoothed = true
 position_smoothing_enabled = true
 rotation_smoothing_enabled = true