New map tool or reading image files directly

[ahockersten]

There needs to be a way to generate maps. There are a few old and perfectly ok options for this, but they are quickly becoming outdated.

I see a few alternatives:

1. Find an existing tool and recommend that (Liero Hellhole has several)
2. Create or port something that can convert existing bitmaps to Liero levels
3. Enable Liero to read image files of the correct size/format directly

To complicate option 3 there needs to be a way to get an image of the map as it is displayed inside Liero, which is not the same as the source image (since it applies textures and whatnot).

I would really like to have something like option 3 for ease of use and for easy testing of new maps.

While doing this, it's worth considering expanding the scope of maps to include stuff like using all available colors and adding new types of terrain (for example, while there is terrain that can be shot through but not moved through, I believe there's no terrain that can be moved through but not shot through).