More progress on the editor

Added colors (diffuse and emissive) to the editor, which improves the gamut of choices…

There’s still some bugs… rebuilding the mesh when I paint voxels sometimes does a bad job, but I think that has to do with the update of the mesh itself, because when I force a refresh (which deletes the meshes, instead of reusing them) it works fine… There’s also a bug with the colors (the purple stone shouldn’t be purple, but all the tiles of that color get set to that color).

Finally there’s an issue with the way I built the voxel system… If two adjacent voxels of different material have alpha, they won’t have the wall between them, which should be present.

All in all, small issues but it really triggers the creativity having an editor. The map above was done by just playing around for the screenshot, and it already looks neat!