Show Treasure Chests as Open

[dhmoeller]

If you open a chest and get the item (not "Can't Hold") then show a different tile for that treasure chest to indicate that it has already been opened.

[Entroper]

At the end of LoadSMTilesetData in Bank0F (1F in the expanded ROM) is where we can scan the tileset properties/attributes for treasures, and set them to open.

All of the CHR data that gets loaded has 6 unused characters at the end, we can swap two (or four) of these for characters that look like opened chests.

[Kronoan]

I too would appreciate this as I have a bad memory sometimes and having to check the same chest multiple times because I can't tell that I already opened it eats up a lot of time for me when I do randomizer.

[blackknight36]

Would love this as well. It's not easy to remember what you've already opened.