That's appreciated. As it stood, it was VERY easy to miss them in the 2nd instruction block.
For clarity, it might be helpful to list a common example - both where to find the tileset file(i.e. Dwarf Fortress's /data/art subdirectory, say, curses_800x600.bmp) and how to determine the tile dimensions.
...now, though, I'm having a problem trying to get the mapmaker to work. It seems to be treating the tile width inconsistently, with the result that pixels start showing up in the template that are actually from the next tile over(or down). It's not EVERY tile, which makes it all the more puzzling. About 7 chars in, I notice that it's shaving one pixel off(of course, this is much easier to tell since that's where the next tile is inverted, thus the whole vertical line shows up on the tile before), and by the end of the line, it's getting two extra filled pixels in. Should I not actually be putting in the coords that the calibration shows as the top-left magenta pixel? It seems even the first tile on each line is off-center on both x and y(the graphic is too high and too far left, i.e. it's starting too low and too far right).
If there's any way to hand the tileset file directly to the program, that'd simplify things greatly; the file path, the BG color(though I'm pretty sure that due to the engine that should always be FF00FF), and the number of tiles in each dimension(again, is this not always 16 x 16?) would be enough to crunch on. But I imagine there are constraints in the language used, so I'll keep poking at it...
Addendum: This seems to have been a fault with the GIMP, which wants to put a select box around the edge of the image and in so doing seems to actually put it ON the image. Tried again with MS Paint, and while some of the tiles still look off-center, the results appear sane, making me think that maybe the tileset itself IS slightly off-center in some places. Other tiles, even at the edge of the image, look spot on.
[ May 16, 2008: Message edited by: Shurhaian ]