let setup = fn() {
  return {
    .color: {
	  .r: random_u8(),
	  .g: random_u8(),
	  .b: random_u8(),
	},
	.rect: {
	  .dimensions: {
	    .x: 100,
		.y: 100,
		.w: 100,
		.h: 100,
	  },
	  .color: {
	    .r: random_u8(),
	    .g: random_u8(),
	    .b: random_u8(),
	  },
	},
  };
}

let update = fn(state, input) {
  let delta = get_frame_time();
  return state;
}

let draw = fn(state) {
  frame_clear(state.color.r, state.color.g, state.color.b);
  draw_rectangle(state.rect.dimensions, state.rect.color);
}