[giancarlostoro]

Depending on what you're trying to accomplish if you make an entire game engine from scratch that can open up the files from StarCraft (and you DON'T distribute them), I think you should be fine. Although this would raise the complexity of your project. One such project exists:

http://www.stratagus.org/ - A cross-platform RTS open source game engine. http://stargus.stratagus.com/index.html - A project built on top of the same engine that opens up all StarCraft original files.

Not sure how active this project is or how far it's gone, but it seems to me from what I've seen: If your project recreates the engine and you require the original files and don't redistribute them yourself, you shouldn't get in much trouble? IANAL

[ctoshok]

that's exactly how I did it when working on scsharp (https://github.com/toshok/scsharp). you gave it the paths to directories holding assets for starcraft + broodwars. 10 years on github without a dmca knocks on wood