Tim can move now

godot/scenes/Boundary.gd

@@ -0,0 +1,18 @@
+class_name Boundary
+extends Node2D
+
+@export var width = 200
+
+# 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
+
+func get_most_left_position():
+	return global_position.x - width / 2
+	
+func get_most_right_position():
+	return global_position.x + width / 2

godot/scenes/Tim.gd

@@ -0,0 +1,20 @@
+extends Node2D
+
+@export var move_speed = 100
+@export var boundary: Boundary
+
+# 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):
+	if Input.is_action_pressed("move_right"):
+		position += Vector2.RIGHT * delta * move_speed
+		if position.x > boundary.get_most_right_position():
+			position = Vector2(boundary.get_most_right_position(), position.y)
+		
+	if Input.is_action_pressed("move_left"):
+		position += Vector2.LEFT * delta * move_speed
+		if position.x < boundary.get_most_left_position():
+			position = Vector2(boundary.get_most_left_position(), position.y)

godot/scenes/stage.tscn

@@ -1,6 +1,8 @@
-[gd_scene load_steps=3 format=3 uid="uid://dw8tbafwj1rgo"]
+[gd_scene load_steps=5 format=3 uid="uid://dw8tbafwj1rgo"]
 
+[ext_resource type="Script" path="res://scenes/Tim.gd" id="1_g3k2b"]
 [ext_resource type="Texture2D" uid="uid://kq63ictuirhc" path="res://sprites/tim_side.png" id="1_saxit"]
+[ext_resource type="Script" path="res://scenes/Boundary.gd" id="2_8p6ir"]
 
 [sub_resource type="PlaceholderTexture2D" id="PlaceholderTexture2D_3hx6l"]
 size = Vector2(600, 200)
@@ -11,8 +13,13 @@ size = Vector2(600, 200)
 texture = SubResource("PlaceholderTexture2D_3hx6l")
 offset = Vector2(0, -100)
 
-[node name="Tim" type="Node2D" parent="."]
+[node name="Tim" type="Node2D" parent="." node_paths=PackedStringArray("boundary")]
+script = ExtResource("1_g3k2b")
+boundary = NodePath("../Boundary")
 
 [node name="Sprite2D" type="Sprite2D" parent="Tim"]
 texture = ExtResource("1_saxit")
 offset = Vector2(0, -200)
+
+[node name="Boundary" type="Node2D" parent="."]
+script = ExtResource("2_8p6ir")