Fixes incorrect spigot handling of the invulnerability damage
reduction applied when an already invulnerable entity is damaged with a
larger damage amount than the initial damage.
Vanilla still damages entities even if invulnerable if the damage to be
applied is larger than the previous damage taken. In that case, vanilla
applies the difference between the previous damage taken and the
proposed damage.
Spigot's damage modifier API takes over the computation of damage
reducing effects, however spigot invokes this handling with the initial
damage before computing the difference to the previous damage amount.
This leads to the reduction values to generally be larger than expected,
as they are computed on the not-yet-reduced value.
Spigot applies these reductions after calling the EntityDamageEvent and
*then* subtracts the previous damage point, leading to the final damage
amount being smaller than expected.
This patch cannot simply call the EntityDamageEvent with the reduced
damage, as that would lead to EntityDamageEvent#getDamage() returning
the already reduced damage, which breaks its method contract.
Instead, this patch makes use of the DamageModifier API, implementing
the last-damage-reduction as a DamageModifier.
* Add PlayerInsertLecternBookEvent
* Rebase
Additionally, moves the event call higher up and removes the lectern
block state clone from the event.
* jSpecify
* Shrink correctly
* style fixups
* move methods
* rename param to cancel
* fix javadocs
* more javadoc fixes
* fix co-author on patch from yesterday
* last fix
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Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com>
Co-authored-by: Bjarne Koll <lynxplay101@gmail.com>
This intends to give plugin developers more control over explosions created using the World#createExplosion method, specifically by adding the option for explosions to damage the explosion cause (not the default behavior, and previously impossible to do, as far as I know). This is done by overloading existing methods with an extra `excludeSourceFromDamage` parameter.
Co-authored-by: Bjarne Koll <lynxplay101@gmail.com>
