Assume actor is stuck when it's not able to move in the destination
direction with maximum speed. Approach to check moved distance from the
previous point doesn't work good for slow and big actors. When they face
obstacle they're trying to move along with oscillation so check is
passing but they don't get any closer to the destination.
Make ExplodeSpell behavior closer to Cast behavior (#5242)
Nullify on-self absorb spells in a different way (#5241)
Allow casting permanent spells through Cast/ExplodeSpell
This needs some improvements, because:
1) Sometimes the cell authority sends the death animation too late and a different one gets played on the other clients
2) There is probably a simpler check that can be done for position changes during a death animation.
When determining actors siding with someone, also check the team members of DedicatedPlayers, not just those of the LocalPlayer.
Don't set players as each other's hitAttemptActor if they are team members.
Don't run startCombat() for DedicatedPlayers who get attacked.
Revert 9502d84a9cb99028f76f7fd2e05f9193ca66561 because the creature graveyard solves more problems than it causes. Only have the authority of a cell send deletion packets when a summon despawns.
Summoning is one of the least multiplayer-friendly systems in OpenMW and really needs to be redone serverside.
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.
