require 'honey.std'


local values = {}
local sum = 0
function integral(value)
	sum = sum + value
	table.insert(values, value)
	if #values > 20 then
		sum = sum - values[1]
		table.remove(values, 1)
	end
	return sum
end

local prev = 0
function derivative(value)
	local delta = value - prev
	prev = value
	return delta
end

return function(db, self, other, point)
	local tbl = ode.ContactGeomTable(point)
	local x = tbl.depth - 3.8
	local spring = db:getComponent(self, "spring")
	spring.F = math.abs(500 * x)
	print("depth", x)
end