first iteration with authorative movement

scripts/runner_input.gd

@@ -0,0 +1,16 @@
+extends MultiplayerSynchronizer
+
+var move_direction: Vector2
+
+func _ready() -> void:
+	move_direction = Vector2.ZERO
+
+	if multiplayer.is_server() or get_multiplayer_authority() != multiplayer.get_unique_id():
+		set_process(false)
+		set_physics_process(false)
+		return
+
+func _physics_process(_delta: float) -> void:
+	var directional_input := Input.get_vector("move_right", "move_left", "move_forward", "move_back")
+	var camera_adjusted: Vector3 = (directional_input.x * %RunnerCameraTarget.global_basis.z) + (directional_input.y * %RunnerCameraTarget.global_basis.x)
+	move_direction = Vector2(camera_adjusted.x, camera_adjusted.z).rotated(PI / 2.0)