[1.21.3] Allow mods to add custom FeatureFlags #1619
+1,343
−1
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This PR makes it possible for mods to add custom
FeatureFlag
s to the vanilla feature flag system. Since theFeatureFlagRegistry
holding the flags is set in stone long before mods start loading, the flags are specified in a JSON file instead of being collected by an event or similar system. To allow adding more than the 64 flags allowed by vanilla (a limitation that is not unlikely to be hit with 100s of mods in a pack), the flag masks are extended by along[]
in theFeatureFlagSet
and an offset field inFeatureFlag
for indexing into the array.Closes #1106.
This PR is the 1.21.3 port of #1538.