There is a fairly significant bug with clue scrolls. The only npcs that drops clue scrolls right now are hellhonds (that is because their ids are hard-coded in TreasureTrailPlugin.createDrop()). All other npcs do not drop clues due to a bug in `NPCDropTables`.
`NPCDropTables` has two separate ways to access the actual table: one is though `List<WeightedChanceItem> defaultTable`, ` List<WeightedChanceItem> charmTable`, and `List<WeightedChanceItem> mainTable`; And the other is though a combined table `NPCDropTable table`. The problem is that only `NPCDropTable table` is set properly--the other 3 tables are always empty.
The reason clues were bugged was because `TreasureTrailPlugin.createDrop()` has a check for `npc.getDefinition().getDropTables().getMainTable().size() < 3`, which always fails. I really do not see the point in this check to begin with, so i am going to remove it. The hard-coded check for hellounds is pointless as well and should be removed.
I am also going to remove the 3 empty tables from `NPCDropTables` to avoid and similar bugs in the future.
Alternatively, it is possible to make changes to `DropTableParser` and keep those tables, then add post-parsing step to populate `NPCDropTable table` from them. However that would just duplicate all the data in all drops table, and since nothing else was using these individual tables, i just opted for removing them.
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