* Online states are now re-evaluated before victim update instead of continuously. Closes#22226. Tagging #21501.
* Victim update now happens every 1s as opposed to every server tick unless current target goes away.
* Suppressed threat is no longer re-established until the victim gains additional threat (by hitting the target, for instance).
* Assistance threat is now split between non-controlled units threatened by target, as opposed to all units threatened by target.
# Conflicts:
# src/server/game/Combat/ThreatManager.cpp
- PvE combat is now always mutual. UNIT_FLAG_IN_COMBAT is backed by actual references to the units we're in combat with.
- PvP combat is now also tracked, and almost always mutual; spells like Vanish and Feign Death can break this rule. That means we can easily determine a list of players we're fighting.
- By extension, IsInCombatWith now has sensible behavior when invoked on nonplayers.
- Threat and combat systems are no longer the same.
- They still have an enforced relationship (threat implies combat - clearing combat clears threat)...
- ...but we can have combat without threat. A creature (with threat list) isn't considered to be engaged until it has an entry on its threat list...
- ...which means we can now faithfully replicate retail engage behavior. Combat on projectile launch - engagement start on projectile impact. Yay for progress!
- AI method refactor, as already ported in 6113b9d - `JustEngagedWith`, `JustEnteredCombat` and `JustExitedCombat`.
- Vehicle threat is now properly pooled on the main vehicle body (fixes#16542).
- Various edge case bug fixes for threat redirects (Misdirection "cancelling" Vigilance and similar).
- Target re-selection is now significantly faster.
- Fixed a ton of other smaller edge case bugs, probably.
Closes#7951 and #19998.
* Combat/Threat rewrite (PR #19930) prep work. Mostly refactors, and a compatibility layer on ThreatManager/HostileReference that allows scripts to be changed already.
* Core/Spells: Implementation of DoT clipping.
* Core/Utilities: Backport "EnumFlags v3.0" from master.
* Core/Spells: Switch AURA_REMOVE_MODE to a flag set.
* players and creatures now share the same power regeneration regeneration function
* UpdatePowerRegeneration is now virtual and handles creature and player specific formulas individually
* handle update field flag UF_FLAG_UNIT_ALL to handle UNIT_FIELD_POWER_REGEN_FLAT_MODIFIER and UNIT_FIELD_POWER_REGEN_INTERRUPTED_FLAT_MODIFIER for creatures as well
* all stats and values will now be set before summons are getting added to map
* cleaned up summon spell effect handler to reduce duplicade code
* summoner guids will no longer be set for every minion and correctly handle assigning creator guids instead. These values will serve as fallback guid if there is no summoner guid
* friendly tempsummons will now inherit the guild data of their player and pass them on to further allied summons. This fixes guild specific visuals for creatures such as Guild Battle Standards and Guild Heralds.
Todo: check for regressions
* use a reversed client function to get the power regeneration rate for all types of powers
* unified all player based regeneration updates into a single statsystem helper
* cleaned up unnecessary regeneration timers
* implement power regeneration for alternative powers
* corrected rage gain numbers based on simulationcraft formulas
* fixed position update logic that was responsible for interrupting channeled spells because of a missing movement generator update call that was kicking in after the interrupt already happened
* improved Baron Ashburys timer layout
* the haste regeneration modifier will now act multiplicative on the base regeneration rate rather than modifying it directly
* renamed some functions for clarification
* weapon effect values can now be manipulated via spell scripts
* moved Kill Shot attack power bonus to spell_bonus_data
* converted Warrior's Devastate effect handler hack to spell script
*merged 3.3.5 renaming of GetObjectSize() to GetCombatReach()
*made GetBoundaryRadius virtual and use it to determine the actual spell radius distance with it instead of using CombatReach