physics

func _physics_process(delta):
    current_animation = state_machine.get_current_node()
    fall(delta)
    walk()
    jump()
    if movement.y < 0:
        state_machine.travel("jump")
    elif movement.x != 0 and movement.y == 0 :
        state_machine.travel("walk")
    elif movement.y > 0:
        state_machine.travel("fall")
    elif movement.x == 0:
        state_machine.travel("idle")
    hit()

    move_and_slide(movement, UP)