Mohawk/TODO

TODO List
Name	Mohawk Engine TODO
Technical Contact(s)	Mohawk Engine Team
Subsystem	Engine

Main Mohawk TODO

Video

• Backwards playback/seeking
  • Myst ME:
    • Myst Card 4113: Retracting weight in the clock tower
  • Myst Original:
    • Stoneship Card 2138: Chest key animation with no chest present
    • Stoneship Card 2132: Chest valve animation when chest is empty
    • Channelwood Card 3385: Closing stairs upper door animation
• Playback at custom framerates - Needed for Myst Cabin Boiler videos.
• The Cyan logo repeats some frames at the end. I call it "Cyan logo syndrome." This is caused by the lack of handling of multiple edit lists. FFmpeg doesn't handle this yet either.
• Some Cinepak frames have corruption.
  • The Myst linking book video on D'ni has a corrupted Cinepak frame (data-wise). Right now, we just skip that frame (and throw a warning). It looks like QuickTime does this too.
  • The CD (but not the DVD) version of Riven has at least two videos with a corrupt frame: the wood chipper (when power is directed elsewhere) and using the trap book before talking with Gehn (when not on Tay).
• Unify the 8bpp to 16/32bpp code snippets. This is mostly done already. I have a patch to add it to graphics/conversion.h, but still waiting on that one.

Myst TODO

The game is playable and should be completable to all four endings, though many issues still need to be fixed.

Main TODO

• Myst ME support is missing these codecs: QDesign Music 2 (partially working) and Sorenson Video 1.
• Myst ME 10th Anniversary Edition requires the Myst ME codecs plus Sorenson Video 3.
• JPEG optimization for Myst ME
• Add transitions
• Add fading (Myst demo only)
• Add Help System (Myst ME only)
• Add support for Myst ME Mac external sounds in AIFF format

Stack TODO/Known Bugs

Myst Island

• Cabin boiler movie playback logic - card 4097, 4098
  • This also requires QT movie playback at custom rates - See above
• Myst ME lacks the weight going back up - Card 4113
  • See above

Channelwood

• Animation of closing stairs upper door incorrect - card 3385
  • See above

Mechanical

• Fortress rotation not working - complete opcode 205
  • See above
• Fortress rotation holo-simulator not working - complete opcode 206
  • See above

Stoneship

• Chest key animation with no chest and opening chest valve when empty in the Stoneship lighthouse incorrect
  • See above

Riven TODO

Status

The game first became completable with r52735. As of r55299, the game is completable with no prior knowledge.

Main TODO

(In Order of Priority):

• Finish External Commands (Many are done, most are self-explanatory)
• Transitions
• Finish ambient sound handling: Only fading is left
• Cleanup video handling
  • We should emulate the QuickTime overlay, without doing so causes a couple glitches:
    • Rarely before a video, the screen that should be shown after the video flashes before the video starts (for example: opening the linking book in the Rebel tunnel puzzle).
    • Rarely after a video, the engine does not update with the correct screen. As far as I can tell, this only affects the easter egg videos on gspit and ospit under normal conditions. However, it can be noticed when skipping a video on occasion.
      • We should also be showing the last frame when skipping
    • In one instance, the lower staircase with the sunners, the water effect can overwrite the video.
  • Honor the MLST volume field
• Cleanup hotspot debugging mode. The water effect and videos write over it.

Stack TODO/Known Bugs

gspit (Survey Island - internally Garden)

• The underwater viewer is partially implemented.
  • xgwharksnd needs to be implemented.
  • Has hardcoded background sounds.

tspit (Temple Island)

• Marbles not drawn on grid when standing one step back from the marble puzzle
  • xt7600_setupmarbles needs to be completed.

Living Books TODO

• Take another look at how rewinding is meant to work.
• Implement fading between palettes.
• Add fading between pages - do full preloading (including sound) and use the relevant cursors.
• Implement the hardcoded mini-games in Green Eggs and Ham and Arthur's Reading Race.
• Implement the rest of the scripting used in the later LB games, including variable saving/loading.
• Handle the proxies and compiled scripts used in v4 (The Rugrats Adventure Game, Arthur's Computer Adventure). fuzzie has preliminary code for this.

CSTime TODO

• Implement the intro/transition videos (HQ/time tunnel).
• Draw the text on Carmen's notes.
• Fix feature priorities.
• Implement music, environmental sounds, the rest of the animation code.
• Implement the Chronopedia.
• Render the torch mask for case 1.
• Support the other sound sync cues.
• Implement cases 3-20.
• A host of other things, no doubt.

Other Games TODO

• They (mostly) all use QuickTime video.
  • The re-release of Zoombinis uses Bink Video!
  • Some Kid Pix games use Smacker (in tSMK resources)
• Some educational games (e.g. Treehouse, Zoombini) use some TrueType fonts.