Improved 3D Navigation Experiment Latest Attempt (UNFINISHED)

extends Node3D

@onready var camera_pivot: Node3D = $CameraPivot
@onready var scene_camera: Camera3D = $CameraPivot/Camera3D
@onready var camera_up_vector: Vector3 = scene_camera.global_basis.y
@onready var camera_right_vector: Vector3 = scene_camera.global_basis.x

var base_value := 1.0
var rotation_speed := 0.05
var input_vector: Vector2 = Vector2.ZERO


func _unhandled_input(event: InputEvent) -> void:

    if event is InputEventMouseButton:
        if Input.is_mouse_button_pressed(MOUSE_BUTTON_WHEEL_LEFT):
            if event.shift_pressed:
                input_vector.x = -base_value
                pan_camera()
            if event.ctrl_pressed:
                zoom_camera(base_value)
            else:
                camera_pivot.rotation.y -= rotation_speed

        elif Input.is_mouse_button_pressed(MOUSE_BUTTON_WHEEL_UP):
            if event.ctrl_pressed:
                zoom_camera(-base_value)
            else:
                camera_pivot.rotation.x -= rotation_speed

        elif Input.is_mouse_button_pressed(MOUSE_BUTTON_WHEEL_DOWN):
            if event.ctrl_pressed:
                zoom_camera(base_value)
            else:
                camera_pivot.rotation.x += rotation_speed

        elif Input.is_mouse_button_pressed(MOUSE_BUTTON_WHEEL_RIGHT):
            if event.shift_pressed:
                pan_camera()
            if event.ctrl_pressed:
                zoom_camera(-base_value)
            else:
                camera_pivot.rotation.y += rotation_speed


func zoom_camera(input_value: float):
    var max_dist := 10.0
    scene_camera.position.z += (input_value * 0.25)
    scene_camera.position.z = clampf(scene_camera.position.z, 1.0, max_dist)


func pan_camera():
    var move_dir = (camera_right_vector * input_vector.x) + (camera_up_vector * input_vector.y)
    print("panning camera")
    return move_dir