function log_state()
	log(3, {name='state', Ballp=Ballp, Ballv=Ballv, A=A, B=B})

function log_state(stack_frame_index)
	if stack_frame_index == nil then
    stack_frame_index = 3
  end
	log(stack_frame_index, {name='state', Ballp=Ballp, Ballv=Ballv, A=A, B=B})

function log_start(name)
	log(3, '\u{250c} ' .. name)

function log_start(name, stack_frame_index)
	if stack_frame_index == nil then
    stack_frame_index = 3
  end
	log(stack_frame_index, '\u{250c} ' .. name)

function log_end(name)
	log(3, '\u{2518} ' .. name)

function log_end(name, stack_frame_index)
	if stack_frame_index == nil then
    stack_frame_index = 3
  end
	log(stack_frame_index, '\u{2518} ' .. name)

function log_new(name)
	log_end(name)
	log_start(name)

function log_new(name, stack_frame_index)
	if stack_frame_index == nil then
    stack_frame_index = 4
  end
	log_end(name, stack_frame_index)
	log_start(name, stack_frame_index)