Restocking object containers via trading now requires the server to send back an ObjectRestock packet before it can happen.
The unused packet ID ID_SCRIPT_GLOBAL_FLOAT has been replaced with ID_OBJECT_RESTOCK.
ClientScriptGlobal is a new Worldstate packet that handles short, long and float values for global variables in clientside scripts.
Previously, short values were handled by the ScriptGlobalShort packet, while a partially implemented ScriptGlobalFloat packet also existed, but both of those packets were Object packets because they were added near the end of 2016 when only Player and Object packets existed (with the latter actually being called WorldEvent packets at the time). Both ScriptGlobalShort and ScriptGlobalFloat have now been removed.
The serverside script functions previously used to interact with ScriptGlobalShort have, however, been kept so they can be adjusted to work with local variables in clientside scripts instead in a future commit.
Include damage, block states and knockdown states in ObjectHit packets about successful hits. Add serverside script functions for reading that information.
ObjectHit is now also sent when local actors succeed or fail in hitting other actors with melee attacks, with the packet including the success state of their attack.
It is also sent when creatures hit a non-actor object.
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.
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.
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.
According to some legal advice I've received, the "TES3MP Team" is too ambiguous of a legal entity, so – with Koncord's agreement – the copyright is now assigned specifically to us, the project's developers.
Previously, the player's currently selected weapon was being used in ranged attacks as in the original melee-oriented attack sync, which meant that shooting one type of projectile and then equipping another while the old projectile was still in the air turned the old projectile into the new projectile upon impact.
Additionally, avoid running most of the code in MechanicsHelper::assignAttackTarget() for non-hitting melee and ranged attacks.
This is done by including the final attackStrength used for ranged attacks in packets and then applying it in WeaponAnimation::releaseArrow() on other clients.
Projectile hits now send Attack packets with RANGED attacks, and their success or failure is now synchronized.
Strike enchantments no longer require a valid victim to be synchronized.
Additional debug messages have been added for attacks.
Whenever an item is added to or removed from the player's ContainerStore, that player sends a PlayerInventory packet with just that addition or removal.
This eliminates all the unnecessary packet spam related to oversized PlayerInventory packets that had existed in one form or another since the initial implementation of inventory sync in 1b259e2d33
Additionally, move booleans from BasePlayer to LocalPlayer when they are only needed on the client, and make the usage of the isReceivingQuickKeys boolean consistent with the new isReceivingInventory boolean by having them both in the processors of their associated packets.
Players can no longer unilaterally use items on themselves in their inventory. When they try to use an item, they send a PlayerItemUse packet to the server with the item's details. A serverside script can then check the item and either send the packet back to make the item use go through or drop it.
Spell, potion, enchantment, creature, NPC, armor, book, clothing, miscellaneous and weapon record data can now be sent in a RecordDynamic packet. Additionally, the packets include data related to associated magical effects (for spells, potions and enchantments), data related to default inventory contents (for creatures and NPCs) and data related to body parts affected (for armor and clothing).
The server now has associated script functions for setting most of the details of the above, with the main exception being individual creature and NPC stats.
Records can either be created entirely from scratch or can use an existing record (set via the baseId variable) as a starting point for their values. In the latter case, only the values that are specifically set override the starting values. Creature and NPC records also have an inventoryBaseId that can be used on top of the baseId to base their inventories on another existing record.
The client's RecordHelper class has been heavily expanded to allow for the above mentioned functionality.
When players create spells, potions and enchantments as part of regular gameplay, they send RecordDynamic packets that provide the server with the complete details of the records that should be created. When they create enchantments, they also provide the server with armor, book, clothing and weapon records corresponding to the items they've enchanted.
This functionality added by this packet was originally supposed to be exclusive to the rewrite, but I've gone ahead and tried to provide it for the pre-rewrite in a way that can mostly be reused for the rewrite.
I originally added rotation animation sync as part of commit 068a45be87. Unfortunately, it meant the PlayerPosition packets were now twice as large as they had been before, which was less than ideal for such a frequently sent packet, which is why Koncord switched to a more optimized approach in commits 5f30dfd5db and d67db1a9bd.
Recently, there have since been some rotation animation problems in OpenMW, which have broken the way Koncord's approach looks. My original approach still looks somewhat okay, so I'm switching back to it until we can figure out how to reuse it under the current circumstances.
Although weather sync was added by Koncord to the rewrite in fd721143e2 in a way that used surprisingly few lines of code, it relied on the server requesting weather states every second from authority players and sending them to non-authority players, while also allowing only very sudden weather transitions across regions, i.e. if there was one player in the Ascadian Isles who had stormy weather, and another player with clear weather in the Bitter Coast Region walked across to the Ascadian Isles, that player was instantly made to have stormy weather with no kind of transition at all.
My approach solves both of those problems. It solves the packet spam by only sending weather updates to the server when weather changes happen or when there are new arrivals to a weather authority's region, and it allows for both sudden weather transitions when players teleport to a region and for soft, gradual transitions when players walk across to a region. It is inspired by my previous actor sync, and uses a WorldRegionAuthority packet to set players as region authorities in a similar way to how ActorAuthority sets players as cell AI authorities. Weather changes are created only by the region authority for a given region, and weather packets are also only sent by that authority.
However, it should be noted that gradual weather transitions are used by default in this implementation. To use sudden weather transitions, the serverside Lua scripts need to forward WorldWeather packets with the forceWeather boolean set to true. That is, however, already handled by our default Lua scripts in situations where it makes sense.
David Cernat
Koncord
uramer