SCUMM/TG16

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, but no graphics will be shown.

Things To Do

Figure out Graphics Format

• Some work has been done on this by Tomaitheo of Efnet #utopiasoft
• The tiles are compressed using RLE
  • Format:
    • Single compressed tile
    • Discussion of the compression
  • Decoding:
    • 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

• The game makes use of sound effects as well as CD audio
• Currently the sound effect resources are not extracted by extract_loom_tg16.

Research needs to be undertaken into the location and format of these sound resources.

A good place to start is Efnet's #utopiasoft.

Also wikipedia has some information on the TG16 hardware here.

David Shadoff also has an interesting page with some sound related documents here.

Useful Tools

• Mednafen is a fairly well equipped emulator with PC Engine support it also has a fairly fully featured debugger built in.

• How to rip a compatible ISO from your original Loom TG16 disc. This guide will show you how to rip an iso that you will be able to extract with the extract_loom_tg16 tool.

• 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.

• Precompiled 'Loom TG16/PCEngine Resource dumper' for Win32 A precompiled Win32 version of ScummVM using the patch from Kirben below, This version of ScummVM only has the Scumm engine compiled in. and will dump Loom TG16/PCEngine graphics resources into the 'dumps' folder.

• ScummVM 'Loom TG16/PCEngine Resource dumper patch for ScummVM' A patch file from Kirben for ScummVM which will dump resources as the game is loaded. It will isolate and dump OI(object images) and BM(background images) these resources are the graphics resources.