Basic Godot KinematicBody movement

player.gd

extends KinematicBody

export(float) var walkSpeed = 1
export(float) var rotationSpeed = 1

func _physics_process(delta):
	if (Input.is_action_pressed("ui_up")):
		var movement = getMovement()
		move_and_slide(movement)
	elif (Input.is_action_pressed("ui_down")):
		var movement = getMovement() * -1
		move_and_slide(movement)
	if (Input.is_action_pressed("ui_right")):
		global_rotate(Vector3(0,1,0), deg2rad(-rotationSpeed))
	elif (Input.is_action_pressed("ui_left")):
		global_rotate(Vector3(0,1,0), deg2rad(rotationSpeed))

func getMovement():
	var direction = global_transform.basis.z
	var movement = walkSpeed * direction
	return movement