Angles = {}
Angles.__index = Angles

function Angles.new(x, z)
    return setmetatable({
        x = x or 0,
        z = z or 0
    }, Angles)
end

Angles.__add = function(a, b)
    return Angles.new(
        a.x + b.x,
        a.z + b.z
    )
end

Angles.__sub = function(a, b)
    return Angles.new(
        a.x - b.x,
        a.z - b.z
    )
end
gimbal = peripheral.wrap("left")
navigation = peripheral.wrap("right")

print(gimbal.getAngles())
print(navigation.getHeading())