1px wide shared borders?

[Cuber01]

I'm making a pixel perfect game and trying to use the minimap addon My rooms (center texture etc) are 8x8 and my borders 1x8. This setup works for the most part, but I experience bad scaling issues:

I assume that the plugin puts room textures on a grid and with the shared border setting tries to place a border in between the grid cells. And here it runs into an issue, since it positions it at an offset of "left room's right border" +0.5px which in pixel perfect makes it spawn the border either on a 0px or 1px offset but not in the 0.5px since it's impossible. The way to fix this would probably be to add a forced 1px border between every cell instead of trying to positions borders inside of, or on the middle of cells next to each other.

I'll probably try to look at the source code and attempt to implement it if possible, but I doubt it will be a fun ride. If any of you know of a simpler solution, or if such a feature is something the developer is willing to add, I'd greatly appreciate if you could help me.

[KoBeWi]

The way to fix this would probably be to add a forced 1px border between every cell

The problem with that approach is that you'll have visible gaps between center textures

Quick mock-up:

Though I guess it's solvable if you make the centers bigger, and thus overlap each other. Although in some room configurations, the overlaps will just end up as

The corners don't draw on straight walls (it wouldn't really make sense), so probably some new piece is needed for that.

It reminds me how some time ago I experimented with adding more built-in themes and it made me realize the limitations of the current system. Some map layouts are impossible to replicate and makes me wonder how to make map drawing more flexible. Some examples:

• Kenney's minimap pack. The borders are the same size as centers, so the map is basically made of tiles:

I managed to add a Kenney-based theme with some modifications.

• Rogue Legacy 2. It puts a gap between each room. It's somewhat similar to your idea.

Impossible for the reasons stated above.

• Nine Sols. Similar to the above, but connections are more complex.

The main problem is that the current system of using universal corners is a rather naive and only works with simple layouts (although that covers most games). I might try to come up with some solution, but no ETA.

[Cuber01]

Thank you for the answer. I was able to modify the source code to fit my needs. 99% of the work was including a Vector2.ONE offset in various cell size calculations. The corner / gap between cells issue was fixed by adding a transparent separator with Full Double separator mode. As you can see below, due to the extra offset cells are drawn in such a way so that they cover one another.

View in game

I didn't read your code thoroughly and my changes are rather dirty. which is why I sadly can't offer much more. If you want to see my changes you can go to Cuber01/TerraEngineer folder addons/MetroidvaniaSystem. I use a custom theme and it is the only one that works with my changes. Do note that I didn't update MetSys since I downloaded it so it might be an older version.

[Cuber01]

And yes, it is indeed true that the current map system is limited, but well, the upside is that it's generic and rather easy to use.