Graphical Window Sprites
version 1 by Erik Temple
Section: A Note on Interpreters
This extension has been tested with Zoom and Spatterlight on OS X, and with Windows Glulxe, Windows Git, and Gargoyle on Windows XP. Spatterlight renders graphics more slowly than the other interpreters, and hyperlinks require a double-click.
We can test at run-time whether the interpreter the player is using supports hyperlinks or graphics display with the phrases
if glulx graphic-window hyperlinks are supported...
if glulx graphics is supported...
This allows us to (for example) warn the player if the functionality will not work with the chosen interpreter. We can also use the "immediately quit the game rule" to end the game immediately.