let setup = fn() {
  return {
    .color: {
	  .r: random_u8(),
	  .g: random_u8(),
	  .b: random_u8(),
	},
	.rect: {
      .speed: 100,
	  .dimensions: {
	    .x: 50,
		.y: 50,
		.w: 300 - 50,
		.h: 300 - 50,
	  },
	  .color: {
	    .r: random_u8(),
	    .g: random_u8(),
	    .b: random_u8(),
        .speed: 150,
	  },
	},
  };
}

let migrate = fn(state) {
    state
}

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

  let dpad_x = if input.gamepad1.dpad.right { 1 } else { 0 } + if input.gamepad1.dpad.left { -1 } else { 0 };
  let dpad_y = if input.gamepad1.dpad.down  { 1 } else { 0 } + if input.gamepad1.dpad.up   { -1 } else { 0 };

  # let movement = {
  #   .x: input.gamepad1.sticks.left.x + dpad_x,
  #   .y: input.gamepad1.sticks.left.y + dpad_y,
  # };
  let movement = {
    .x: dpad_x,
    .y: dpad_y,
  };

  state.rect.dimensions.x =
    state.rect.dimensions.x + (delta * state.rect.speed * movement.x);
  state.rect.dimensions.y =
    state.rect.dimensions.y + (delta * state.rect.speed * movement.y);

  let color = {
    .r: state.rect.color.r + (input.gamepad1.sticks.right.x * delta * state.rect.color.speed),
    .g: state.rect.color.g + ((0 - input.gamepad1.sticks.right.y) * delta * state.rect.color.speed),
    .b: state.rect.color.b + ((0 - input.gamepad1.sticks.left.y) * delta * state.rect.color.speed),
  };

  state.rect.color.r = if ((0 <= color.r) && (color.r <= 255)) { color.r } else { if color.r < 0 { 0 } else { 255 } };
  state.rect.color.g = if ((0 <= color.g) && (color.g <= 255)) { color.g } else { if color.g < 0 { 0 } else { 255 } };
  state.rect.color.b = if ((0 <= color.b) && (color.b <= 255)) { color.b } else { if color.b < 0 { 0 } else { 255 } };
  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);

  let mut count = 0;
  let r_diff = state.color.r - state.rect.color.r;
  let g_diff = state.color.g - state.rect.color.g;
  let b_diff = state.color.b - state.rect.color.b;
  let epsilon = 2;

  if ((0 - epsilon) < r_diff) && (r_diff < epsilon) { count = count + 1; };
  if ((0 - epsilon) < g_diff) && (g_diff < epsilon) { count = count + 1; };
  if ((0 - epsilon) < b_diff) && (b_diff < epsilon) { count = count + 1; };

  if count == 0 {
     draw_text("Match the colors", 200, 200, 50, { .r: 255, .g: 255, .b: 255 });
  };
  if count == 1 {
     draw_text("Close", 200, 200, 50, { .r: 255, .g: 255, .b: 255 });
  };
  if count == 2 {
     draw_text("Closer!!", 200, 200, 50, { .r: 255, .g: 255, .b: 255 });
  };
  if count == 3 {
     draw_text("Great Job!", 200, 200, 50, { .r: 255, .g: 255, .b: 255 });
  };
}