Glulx Image Centering adds the ability to display an image that is centered (left/right) on the screen.
Glulx Image Centering adds the ability to display an image that is centered (left/right) on the screen. To do this, it uses up the first of the two available custom user text styles, defining it to be center-justified. To invoke Glulx Image Centering, we say display figure foo centered. To display cover art in our game, we might include something like this: Include Glulx Image Centering by Emily Short. Include Basic Screen Effects by Emily Short. When play begins: display figure of small cover centered; pause the game. This would display a picture in the middle of the screen, then wait for a keypress, then clear the screen before going on with the game. A word of warning: not all Glulx interpreters will necessarily handle this operation correctly. Authors are advised to check the performance of their game on a variety of interpreters, or have their beta-testers do so.