Update spring solver

test/mock.luau

@@ -256,6 +256,40 @@ local Vector2 = { __type = "Vector2" } :: any do
     end
 end
 
+local Vector3 = { __type = "Vector3" } :: any do
+    local function new(x, y, z)
+        return setmetatable({ X = x, Y = y, Z = z }, Vector3)
+    end
+
+    function Vector3.new(x, y, z)
+        return new(x or 0, y or 0, z or 0)
+    end
+
+    function Vector3.__add(a, b)
+        return new(a.X + b.X, a.Y + b.Y, a.Z + b.Z)
+    end
+
+    function Vector3.__sub(a, b)
+        return new(a.X - b.X, a.Y - b.Y, a.Z - b.Z)
+    end
+
+    function Vector3.__mul(a, b)
+        return new(a.X * b, a.Y * b, a.Z * b)
+    end
+
+    function Vector3.__unm(v)
+        return new(-v.X, -v.Y, -v.Z)
+    end
+
+    function Vector3.__eq(a, b)
+        return a.X == b.X and a.Y == b.Y
+    end
+
+    function Vector3.__index(v)
+        return (v.X^2 + v.Y^2 + v.Z^2)^0.5
+    end
+end
+
 local UDim2 = { __type = "UDim2" } :: any do
     function UDim2.new(sx, ox, sy, oy)
         return table_to_proxy(setmetatable({ x = { scale = sx, offset = ox }, y = { scale = sy, offset = oy } }, UDim2))
@@ -294,8 +328,8 @@ return {
     Signal = Signal,
     Instance = Instance :: typeof(Instance),
     Color3 = Color3 :: typeof(Color3),
-    Vector3 = Vector3 :: typeof(Vector3),
     Vector2 = Vector2 :: typeof(Vector2),
+    Vector3 = Vector3 :: typeof(Vector3),
     UDim2 = UDim2 :: typeof(UDim2),
     Enum = Enum :: typeof(Enum),
     typeof = typeof :: typeof(typeof)