undar-lang/docs/project-example-v2/src/common.ztl

type :Vec {
   f32 :x,
   f32 :y,
   f32 :z,
};

type :Color {
   i8 :r,
   i8 :g,
   i8 :b,
};

type :Player {
   str   :username,
   Vec   :pos,
   Color :color,
};

set :purple to immutable Color {255 255 0};