Difference between revisions of "SCUMM/TG16"

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Currently it is possible to extract a number of resources from both the USA and JPN version of Loom TG16/PC Engine, The resources built by this tool are based on the structure of the EGA version of Loom.
Currently it is possible to extract a number of resources from both the USA and JPN version of Loom TG16/PC Engine, The resources built by this tool are based on the structure of the EGA version of Loom.
It is also possible to play up until the difficulty selection screen in ScummVM, however the game will play further because the scripts are partially supported, but no graphics will be shown.
It is also possible to play up until the difficulty selection screen in ScummVM, however the game will play further because the scripts are partially supported, The graphics format is understood and documented.


== Things To Do ==
== Things To Do ==
=== Figure out Graphics Format ===
*Some work has been done on this by Tomaitheo of [irc://irc.efnet.org/utopiasoft Efnet #utopiasoft]
*The tiles are compressed using RLE
**Format:
***[http://gracesdisposal.bpweb.net/LOOM/TILE%20COMPRESSION/tile_compression.txt Single compressed tile]
***[http://gracesdisposal.bpweb.net/LOOM/TILE%20COMPRESSION/%23utopiasoft.EFNet.log Discussion of the compression]
**Decoding:
***[http://gracesdisposal.bpweb.net/LOOM/TILE%20COMPRESSION/loom-decode.cpp Some code for decoding tiles from hennymcc]
Currently the graphics resources are extracted by extract_loom_tg16 however the resource format is unknown.


=== Figure out Sound Format ===
=== Figure out Sound Format ===
*The game makes use of sound effects as well as CD audio
*The game makes use of sound effects as well as CD audio
*Currently the sound effect resources are not extracted by extract_loom_tg16.
*The Turbografx processor provides six channels for producing sound.
 
Research needs to be undertaken into the location and format of these sound resources.
 
A good place to start is [irc://irc.efnet.org/utopiasoft Efnet's #utopiasoft].
 
Also wikipedia has some information on the TG16 hardware [http://en.wikipedia.org/wiki/TurboGrafx-16#Technical%20specifications here].
 
David Shadoff also has an interesting page with some sound related documents [http://pages.interlog.com/~daves/pce_info/info.html here].


== Useful Tools ==
== Useful Tools ==

Revision as of 20:42, 9 October 2009

Status

Currently it is possible to extract a number of resources from both the USA and JPN version of Loom TG16/PC Engine, The resources built by this tool are based on the structure of the EGA version of Loom. It is also possible to play up until the difficulty selection screen in ScummVM, however the game will play further because the scripts are partially supported, The graphics format is understood and documented.

Things To Do

Figure out Sound Format

  • The game makes use of sound effects as well as CD audio
  • The Turbografx processor provides six channels for producing sound.

Useful Tools

  • Mednafen is a fairly well equipped emulator with PC Engine support it also has a fairly fully featured debugger built in.
  • SVN Tools This enables you to extract your resources from the games code ISO, You will want to use 'extract_loom_tg16'.
  • If you are not using Win32, the source code for the extract tool is here.