This keeps the filenames the same, but adds a new "inside" double texture for the open chest. Use regular drawtype for closed chest and delete the "cube.obj" model. X-flip the right-side texture for the closed chest.
423 B
16x16px
423 B
16x16px
![](/Illuna-Minetest/minetest_game/raw/commit/cbb0529ace1d9ebfb01909478a005c71a034e6f2/mods/default/textures/default_chest_top.png)