Am I punching trees or pounding sand?

character/character.gd

@@ -1,4 +1,4 @@
-extends CharacterBody2D
+class_name Character extends CharacterBody2D
 
 var _grid_pos: Vector2i = Vector2i.ZERO
 var _grid_tween: Tween = null
@@ -6,11 +6,10 @@ var _grid_tween: Tween = null
 var _cached_dir: Vector2i = Vector2i.ZERO #used for reversing the current input
 
 func _physics_process(delta: float) -> void:
-	#WARNING: this has the potential for getting stuck
 	if _grid_pos * 32 == Vector2i(position):
 		_check_grid_move(delta)
 
-func _check_grid_move(delta: float) -> void:
+func _check_grid_move(_delta: float) -> void:
 	if Input.is_action_pressed("input_north"):
 		_set_grid_move(Vector2i.UP)
 	elif Input.is_action_pressed("input_south"):

items/inventory.gd

@@ -0,0 +1,24 @@
+#Inventory Singleton
+extends Node
+
+#game items
+@abstract
+class Item:
+	var name: String
+	func _init(_name: String):
+		name = _name
+
+class Wood extends Item:
+	func _init():
+		super("Wood")
+
+class Stone extends Item:
+	func _init():
+		super("Stone")
+
+#inventory controls
+var _inventory_contents: Array[Item] = []
+
+func add_item(item: Item) -> void:
+	_inventory_contents.push_back(item)
+	print("Inventory: ", _inventory_contents.map(func (i: Item) -> String: return i.name))

items/inventory.gd.uid

@@ -0,0 +1 @@
+uid://cf0cv8j7r1qjm

project.godot

@@ -15,6 +15,10 @@ run/main_scene="uid://8o4ffx055dof"
 config/features=PackedStringArray("4.5", "GL Compatibility")
 config/icon="res://icon.svg"
 
+[autoload]
+
+Inventory="*res://items/inventory.gd"
+
 [input]
 
 input_north={
@@ -45,5 +49,4 @@ input_west={
 [rendering]
 
 textures/canvas_textures/default_texture_filter=0
-renderer/rendering_method="gl_compatibility"
-renderer/rendering_method.mobile="gl_compatibility"
+renderer/rendering_method="mobile"

tree/small_tree.gd

@@ -3,9 +3,9 @@ extends Area2D
 var _durability: int = 3
 
 func _on_body_entered(body: Node2D) -> void:
-	if body is CharacterBody2D:
+	if body is Character:
 		_durability -= 1
 		body.repel_collision(self)
 		if _durability <= 0:
-			print("tree dead")
+			Inventory.add_item(Inventory.Wood.new())
 			queue_free()