Method update

game/ui/tileview/citytileview.cpp:1002–1095

}

void CityTileView::update()
{
	TileView::update();
	counter = (counter + 1) % COUNTER_MAX;

	// Pulsate palette colors
	colorCurrent += colorForward;
	if (colorCurrent <= 0 || colorCurrent >= 15)
	{
		colorCurrent = clamp(colorCurrent, 0, 15);
		colorForward = -colorForward;
	}

	// The palette fades from pal_03 at 3am to pal_02 at 6am then pal_01 at 9am
	// The reverse for 3pm, 6pm & 9pm

	auto hour = state.gameTime.getHours();
	// Always noon in alien dimension
	if (state.current_city.id == "CITYMAP_ALIEN")
	{
		hour = 12;
	}

	if (hour < 3 || hour >= 21)
	{
		this->pal = this->mod_night_palette[colorCurrent];
	}
	else if (hour >= 9 && hour < 15)
	{
		this->pal = this->mod_day_palette[colorCurrent];
	}
	else
	{
		this->pal = this->mod_interpolated_palette[colorCurrent];

		int minute = hour * 60 + state.gameTime.getMinutes();
		if (std::abs(minute - interpolated_palette_minute[colorCurrent]) < 2)
		{
			return;
		}

		// recalc interpolated_palette every 2 minute
		interpolated_palette_minute[colorCurrent] = minute;
		mod_interpolated_palette[colorCurrent]->rendererPrivateData = nullptr;

		sp<Palette> palette1;
		sp<Palette> palette2;
		float factor = 0;
		// TODO: use integer calculation instead
		float hours_float = (float)minute / 60.0f;

		if (hour >= 3 && hour < 6)
		{
			palette1 = this->mod_night_palette[colorCurrent];
			palette2 = this->mod_twilight_palette[colorCurrent];
			factor = clamp((hours_float - 3.0f) / 3.0f, 0.0f, 1.0f);
		}
		else if (hour >= 6 && hour < 9)