cleaned up the code more.

scripts/player.gd

@@ -0,0 +1,30 @@
+extends CharacterBody3D
+
+@export var speed = 5.0
+@export var jump_velocity = 4.5
+
+var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")
+
+func _physics_process(delta):
+    # Add gravity
+    if not is_on_floor():
+        velocity.y -= gravity * delta
+
+    # Handle jump
+    if Input.is_action_just_pressed("ui_accept") and is_on_floor():
+        velocity.y = jump_velocity
+
+    # Get input direction
+    var input_dir = Input.get_vector("ui_left", "ui_right", "ui_up", "ui_down")
+    var direction = (transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
+
+    if direction:
+        # Rotate to face movement direction
+        look_at(position + direction, Vector3.UP)
+        velocity.x = direction.x * speed
+        velocity.z = direction.z * speed
+    else:
+        velocity.x = move_toward(velocity.x, 0, speed)
+        velocity.z = move_toward(velocity.z, 0, speed)
+
+    move_and_slide()