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PreCreatureSpawnEvent

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Adds an event to fire before an Entity is created, so that plugins that need to cancel
CreatureSpawnEvent can do so from this event instead.

Cancelling CreatureSpawnEvent rapidly causes a lot of garbage collection and CPU waste
as it's done after the Entity object has been fully created.

Mob Limiting plugins and blanket "ban this type of monster" plugins should use this event
instead and save a lot of server resources.

See: https://github.com/PaperMC/Paper/issues/917
This commit is contained in:
Aikar
2018-01-14 17:01:31 -05:00
parent 3620489699
commit cad0c129c8
5 changed files with 115 additions and 17 deletions
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2
paper-server/patches/sources/net/minecraft/world/entity/npc/Villager.java.patch
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@@ -145,7 +145,7 @@
if (list1.size() >= requiredCount) {
- if (!SpawnUtil.trySpawnMob(EntityType.IRON_GOLEM, EntitySpawnReason.MOB_SUMMONED, world, this.blockPosition(), 10, 8, 6, SpawnUtil.Strategy.LEGACY_IRON_GOLEM, false).isEmpty()) {
+ if (!SpawnUtil.trySpawnMob(EntityType.IRON_GOLEM, EntitySpawnReason.MOB_SUMMONED, world, this.blockPosition(), 10, 8, 6, SpawnUtil.Strategy.LEGACY_IRON_GOLEM, false, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.VILLAGE_DEFENSE).isEmpty()) { // CraftBukkit
+ if (SpawnUtil.trySpawnMob(EntityType.IRON_GOLEM, EntitySpawnReason.MOB_SUMMONED, world, this.blockPosition(), 10, 8, 6, SpawnUtil.Strategy.LEGACY_IRON_GOLEM, false, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.VILLAGE_DEFENSE, () -> {GolemSensor.golemDetected(this);}).isPresent()) { // CraftBukkit // Paper - Set Golem Last Seen to stop it from spawning another one
list.forEach(GolemSensor::golemDetected);
}
}