Raycity.exe Client DLL file injection source
Database
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The dll file compilation version to be injected must be VS2017 or later and must be injected into the 1.590 client version.
When injected into the client, the features that change are the beginner's helper and the racing-related UI.
Support for the database was provided by "YimMieji" Thai.
Some of the things implemented in that database
Quests, Party missions, Auctions, Guilds, etc. are buggy but work.
For PartyMission, I can't remember if it's the DestList part of the database or not, but if it's "0", it's solo play, and if it's "1", it's party play. You can use "1" to share destinations, satisfaction, etc.