Glulx Glk extensions ecosystem

This page will list out the various Glulx/Glk features needed by Inform authors, along with the extensions which provide them.

intfiction.org forum discussion

Glulx and Glk definitions

Definitions of the object and value kinds needed by other extensions

Provided by:

• Glulx Definitions by Dannii Willis

Testing interpreter features (gestalts)

Phrases to check whether the interpreter supports various features

Provided by:

• Glulx Definitions by Dannii Willis

Glk object recovery

When a game is restarted, restored, or a turn undone the game must ensure that it has correct references to the Glk objects which already exist. This is accomplished through providing a GGRecoverObjects() function.

Provided by:

• Glk Object Recovery by Dannii Willis

Events

A system is needed to access the Glk event loop. There could be different ways of handling this.

Provided by:

• Glk Events by Dannii Willis
• Glulx Entry Points by Emily Short (legacy system)

Input control

Many things should be possible:

• input from different windows
• cancelling and resuming line input
• converting types of input
• input echoing

Provided by:

• Unified Glulx Input by Andrew Plotkin

Text formatting

Provided by:

• Glulx Text Effects by Emily Short
• Glk Text Formatting by Dannii Willis

Hyperlinks

Provided by:

• Gavin Lambert's system:
  • Hyperlinks by Gavin Lambert
  • Inline Hyperlinks by Gavin Lambert
• Hyperlinks by Dannii Willis (extremely minimal and not really supported)

Windows

Provided by:

• Flexible Windows by Jon Ingold
• Simple Graphical Window by Emily Short

Graphics

Provided by:

• Simple Graphical Window by Emily Short