Minor improvements

player/Player.gd

@@ -1,2 +1,7 @@
 class_name Player
 extends Character
+
+func _ready():
+	var controller := PlayerController.new()
+	controller.character = self
+	add_child(controller)

player/PlayerController.gd

@@ -1,7 +1,9 @@
 class_name PlayerController
 extends Node
 
+## The character that we're controlling.
 @export var character: Character
+
 var move: Vector2
 
 func _input(_event):