function createCircularBuffer(limit)
	local buffer = {}
	local size = 0
	local head = 1
	return
	{
	push = function(val)
	buffer[head] = val
	head = head % limit + 1
	if size < limit then
	size = size + 1
	end
	end,
	getValues = function()
	local result = {}
	for i = 1, size do
	local pos = (head - size + i - 1) % limit + 1
	table.insert(result, buffer[pos])
	end
	return result
	end,
	count = function() return size end
	}
	end