Programming
GUI
Loading and Splash Screens

Loading and Splash Screens

Boot Screen#

The default boot screens of UNIGINE SDK editions.

The Boot screen comes first early in the Engine initialization. It goes through several initialization steps, showing the loading progress.

NoticeFonts, textures, or any other resources used in the boot screen cannot be packed into an UNG archive.

The boot screen offers you a lot of flexibility in customization by editing the screen section of the default.boot configuration file:

Source code (XML)

<boot version="2.12" autosave="0">
	<!-- ... -->
	<screen>
		<width>570</width>
		<height>400</height>
		<background_color>0, 0, 0, 0</background_color>
		<transform>0.5, 0.33, 0.5, 0.5</transform>
		<threshold>16</threshold>
		<texture>textures/boot_screen.png</texture>
		<font>fonts/boot_screen_font.ttf</font>
		<text>
			<![CDATA[
				<p align="center">
					<font color="#606060" size="16">
						<xy y="%100" dy="-20"/>UNIGINE_COPYRIGHT
					</font>
				</p>
			]]>
		</text>
		<messages>
			<engine_init>Custom message for engine initialization.</engine_init>
			<file_system_init>Custom message for file system initialization.</file_system_init>
			<materials_init>Custom message for materials initialization.</materials_init>
			<properties_init>Custom message for properties initialization.</properties_init>
			<plugins_init>Custom message for plugins initialization.</plugins_init>
			<shaders_compilation>Custom message for shaders compilation.</shaders_compilation>
		</messages>
	</screen>
</boot>

The following parameters are available:

width	Width of the boot screen window, in pixels.
height	Height of the boot screen window, in pixels.
background_color	Background color defined by a vector of four numbers in the [0; 1] range.
texture	Path to the boot screen texture.
transform	Transformation of the boot screen texture defined by a vector of four numbers in the [0; 1] range: Texture size multiplier. Window size multiplier. Horizontal position in the [0.0, 1.0] range. Vertical position in the [0.0, 1.0] range.
threshold	Threshold for blending based on the alpha-channel.
font	Path to the font for text rendering.
text	Text of the boot screen. Can be either a plain or rich text. A number of aliases is provided: UNIGINE_COPYRIGHT — the UNIGINE copyright text. UNIGINE_VERSION — the current UNIGINE version. LOADING_PROGRESS — the loading progress going from 0 to 100. Notice Rich text should be enclosed in <![CDATA[]]> section.
messages	Custom names for the corresponding initialization stages. Can be either a plain or rich text, for example: Source code (XML) `<engine_init> <![CDATA[ <p> <font color="#c0c6cb" size="18"> <xy x="130" y="414"/>Initializing Engine... </font> </p> ]]> </engine_init>` engine_init — engine initialization. file_system_init — file system initialization. materials_init — materials initialization. properties_init — properties initialization. plugins_init — engine plugins initialization. shaders_compilation — shaders compilation.

Notice

Please note that if the application window is out of focus the further executon will stop, unless the background_update feature in the default.boot configuration file is enabled to engage the engine execute always regardless of whether the application window is focused or in the background.

Splash Screen#

The splash screen.

The Splash screen demonstrates UNIGINE logo animation. It is enabled only in Release engine binaries and omitted for Debug and Development binaries to make the development process more solid.

Notice

The Splash screen can be skipped in Community Pro, Engineering and Sim SDK editions. To do that, simply set the splash_screen parameter of the default.boot configuration file to 0.

Loading Screen#

The Loading screen.

Loading screens serve for other purposes, such as world loading, shaders compilation or custom loading logic. The look of loading screens is controlled by the LoadingScreen class.

Last update: 2021-12-13

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