Vector class for wOOP 0.5

class "vector"
{
    x=0,
    y=0,

    magnitude=function()
        return math.sqrt(self.x^2+self.y^2)
    end,
    unit=function()
        return self/self:magnitude()
    end,

    coords=function()
        return self.x,self.y
    end,

    __settings=
    {
        new=function(x, y)
            return {x=x,y=y}
        end
    },

    __omt=
    {
        __tostring=
        function(a)
            return "Vector : "..a.x..", "..a.y
        end,

        __add=
        function(a,b)
            if tostring(b)=="Vector2" then
                return newObj("vector", a.x+b.x,a.y+b.y)
            else
                return newObj("vector", a.x+b,a.y+b)
            end
        end,

        __sub=
        function(a,b)
            if tostring(b)=="Vector" then
                return newObj("vector", a.x-b.x,a.y-b.y)
            else
                return newObj("vector", a.x-b,a.y-b)
            end
        end,

        __div=
        function(a,b)
            if tostring(b)=="Vector" then
                return newObj("vector", a.x/b.x,a.y/b.y)
            else
                return newObj("vector", a.x/b,a.y/b)
            end
        end,

        __mul=
        function(a,b)
            if tostring(b)=="Vector" then
                return newObj("vector", a.x*b.x,a.y*b.y)
            else
                return newObj("vector", a.x*b,a.y*b)
            end
        end
    }
}