ZVision

Z-engine
Engine developer	RichieSams
Companies that used it	Activision
Games that use it	Zork Nemesis, Zork: Grand Inquisitor
Date added to ScummVM
First release containing it	N/A

The Z-engine was the engine used by Activision in Zork Nemesis and Zork: Grand Inquisitor.

This engine is being added by the GSoC student RichieSams to ScummVM as part of the GSoC 2013. The ScummVM engine uses Marisa Chan's Z-engine re-implementation, which is available from http://github.com/Marisa-Chan/Zengine, as a reference.

List of TODO's for Z-Engine to be playable

• Fix audio problems in videos
  • This is a problem with Video::VideoDecoder
  • Essentially, Zork videos require the sound chunks to be read as one continuous stream
  • The current model puts each chunk into a separate AudioStream and then queues the streams
  • This is being worked on by clone2727
• Finish implementing the rest of the ResultActions. (See actions.h)
  • ActionDebug
  • ActionDisableVenus
  • ActionDisplayMessage
  • ActionDissolve
  • ActionDistort
  • ActionFlushMouseEvents
  • ActionInventory
  • ActionKill
  • ActionEnableMenuBar
  • ActionPanTrack
  • ActionPreferences
  • ActionRegion
  • ActionRestoreGame
  • ActionRotateTo
  • ActionSaveGame
  • ActionSetVenus
  • ActionStop
  • ActionSyncSound
  • ActionTTYText
  • ActionUniverseMusic
• Finish implementing the rest of the Controls
  • InputControl
  • SaveControl
  • SlotControl
  • SafeControl
  • FistControl
  • HotMovieControl
  • PaintControl
  • TilterControl
• Implement inventory support
• Implement subtitles

ZGI specific TODO's

• Determine why gary.scr doesn't load properly
  • This is the first "room". It loads up the environment variables, the opening movie, and then the main menu
• Implement spellbook support

Current Progress

• Current WIP for Z-engine, on a git fork from ScummVM