Previously, creatures with fast attack animations would have their attack updated right after being started, which happened so quickly that it prevented the attack start from actually being sent by the client.
Previously, each client chose its own attack animations for DedicatedPlayers and DedicatedActors based on the direction they were walking in, which however led to desyncs for players with "Always Use Best Attack" enabled and for creatures which pick their attack animations randomly.
When Koncord implemented spellcasting, he made it so only the act of initiating a spellcast was synchronized, leaving it to other clients to actually cast a spell for a dedicated player or actor once their spellcasting animation was over. This had led to a lot of desyncs and has always been inconsistent with the handling of attacks, so I've belatedly gone ahead and prevented the end of a spellcasting animation from having any effect for dedicated players and actors, making them cast a spell when an appropriate Cast packet is received from them instead.
Additionally, the logged messages in MechanicsHelper's handling of attacking and casting have been moved around slightly.
This means the server scripts are now required to send a WorldKillCount packet as a reply to ActorDeath packets sent by clients. This gives the server full control over which kills are counted, while also solving the previous problem of kills being counted only for actors that had finished their death animations.
Rename the old WorldKillCount that was a Player packet into PlayerPlaceholder. Rename the unused CellCreate that was a Worldstate packet into WorldKillCount. On the server, move kill count-related script functions from QuestFunctions to WorldstateFunctions.
Previously, using CellController::getCellStore() to get an unloaded CellStore would make its references get loaded in the process, with the CellStore's loadRefs() then running updateMergedRefs(), which in turn – before getting as far as setting the CellStore's state to State_Loaded – would call CellController::hasLocalAuthority() on its accompanying ESM::Cell, which would then run CellController::isActiveWorldCell(), which would then run CellController::getCellStore() to get the CellStore again, which – still being marked as unloaded – would run the whole loop again... and again.
For starters, the new packet can set which client scripts have all of their variables synchronized between players. The previous hardcoded list of IDs for synchronized scripts has been removed.
