Detect mismatch in blockstate registries between server & client

[ByThePowerOfScience]

I keep getting people asking me to update my bandaid fix for a MissingPaletteException to newer versions, but I just don't have the disk space for a ton of MDKs. Would you consider adding it to ModernFix so people will stop crashing?

It's just a single Mixin: https://github.com/ByThePowerOfScience/MissingPaletteFix/blob/main/src/main/java/btpos/mcmods/missingpalettefix/mixin/MHashMapPalette.java

If you do integrate it, it would probably be better to use a missing texture block instead of a dragon egg, and to reimplement it with WrapOperation so it chains. MixinExtras wasn't bundled with Forge at the time, so I didn't want to bloat the mod size.

[embeddedt]

Thanks for bringing the mod to my attention, but I don't want to use a bandaid for that issue - it just hides the problem and could cause other bugs with a less obvious stacktrace. (Also, the fix is only applied to HashMapPalette, not the other palette types.)

Most people I have talked to with this bug have been able to fix it after ensuring their mods & configs are actually the same on both sides. So, a more robust way to prevent the problem would be to detect a mismatch in the blockstate registry between the client & server and throw an exception during the initial connection if there is a desync. If the registry is identical then a missing entry in the palette should be impossible. This is something I'd be willing to implement in ModernFix; I'd just need to find time for it.